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AIR COOLED WATER CHILLERS (COOLING ONLY AND HEAT

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2. For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter All the field wiring equipment must comply with local codes SMGB0003 rev 0 01 2007 2 Electrical Wiring Diagrams pag 35 lt 198 gt 941 29833 ores 198 949
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14. For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter All the field wiring equipment must comply with local codes SMGBO0003 0 01 2007 2 iring Electrical W Diagrams lt 798 gt 94L lt 198 DAINO ADV 19g 582 X668 Q4INO lt 98 gt gt 9 y 8NO LINO i 2 SN Od P z980d SN 90 Y e S3X081 EN 65 Gi fh SHOEI dirppa IPIN 32 22 X08 3 N X08 Tiiiivong TIETEEN p T 940 Pep E 14 9 Q 5 aya S S cowo 8 N X 800 NONO WIDE E Y NO EN el es i lt Le6 gt at 7 Se ta in i T gt 37 ES 9644 B 8 jJ dii VE de eco S SENE EB y 99 AM a rOSON oa o n N d82IN fie o lt 016 gt lt 017 gt SERES lt 606 gt SERA X802 765 lt 806 gt PEL 807 AN ASI As c E V avd Y3dd09 H3 LI3 19
15. 53 CE P ess PA 53 AA p esu iuamigesnismMe c ein ck 54 a Actuation of cumrent Mut ud Up bU Eb IU Mq on C EM 54 4 4 2 Standard setting value of unload 54 4 5 Reverse protection 55 4 6 Restart control after power failure ooocccccoccncconncoconnnocononoconnnononnnonannnononnnonnnononnnnonanononarnnonaninonas 56 4 6 1 Restart control after momentary power failure lt 2 56 4 6 2 Restart function after power failure Option gt 2 nnne 56 4 7 Operation error wrong setting prevention control 40 40 57 4 8 Forced 57 4 9 Second water temperature SettidQ oooocccconnncncoconnnnnononcnononononnnnnnnnnnnnnnnnnnnnnnnnnnnnnnrnnronnnrnnnnnnnninnnnanes 58 4 10 Heat storage operation by external 64 4 11 Operation by DC24V input Remote 65 4 12 Installation of switch for snow measure Fan manual operation 68 4 13 Switch for confirmation of high pres
16. lt lt 044 Electrical Wiring Diagrams lt p gt dd 41024 lt 66p gt dd 0 4 IS kkk V Mv tam 24ND d 000 eo gt i Fase 8 5 tano A l YYY Y Y 44d gt 21809 Nd OL Y Y olg Ol a gt OL lt 80 gt r 2959 ol Y rwW E3N ol H lt gt Y lt gt lt 705 gt Ale Lae SN 20 3X08 1 X08 3 All the field wiring equipment must comply with local codes avag 339305 Drawing Code XEKS1036 r1 For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter SMGBO0003 0 01 2007 pag 34 HITACHI Inspire the Next
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18. VOY LSE EL SET AL ALA AIA JA ug d Y sx msg aga BO pe t 213 V ov Vv MYM Vi VIV VIV z EB E 0000 ale E SS 4 4 lt U ZNO3 god 15 gt N lt E WEE VP LIP82d 194 4 LE eS y u ZN24 299d E U Lo m V o ePad cpHOd ved od eld Jo ns Crue c B IPBOd W014 lt u 104 Vesp 22894 104 Eb E gt spun se 5 y 12994 u044 104 IIVL3Q 1 o EE V a lt 248 gt Electrical Wiring For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter All the field wiring equipment must comply with local codes SMGB0003 rev 0 01 2007 7 nore 41 1046 r1 HITACHI Inspire the Next Electrical Wiring Diagrams
19. 0 1 No 2 59 ption A SIS Chilled Water Temperature Setting Warm Water Temp Setting E ET RSWA Wi E ex 0 0 0 07 2 E ZERE exse NE di Fe Des Sex Ser cag BE ees ES O CC ME po _ 0 0 0 0 VE SEX Ses E E Current Ime SW6 SWB LOC Defrost by Ambient Temp Current Limit Set SI N b Setting of operation PCB of unit body setting of air conditioning temperature Set chilled water outlet temperature as 7 C 0 1 2 2 SW9 SW10 SW T Option AUB Chilled Water Temperature Setting Worm Water Temp Setting LLL 20 RSWA Q 0 DIE ERE EO E d zr P Sex Ses BU OW Sess 0 0 0 0 c Sex 0 Seq E E Current lime SW6 Defrost by Ambient Temp Current Limit Set S N c Temperature setting by indication PCB Set chilled water outlet temperature as 10 C using switch on indication PCB d Wiring for the switch and external Thermo contact input Wire as follows Remove it
20. gt 9 _ aud HXH an Y Gauge Option 47 manifold du E E 54 gt il UM 16 z gt ae 5 0 i E 1 Pl 1 15 U2 m I iila H en an gt a X Option E Option 5 2 2 y EA i v e UU qq 7 7 Chilled Water Inlet gt gt y D H HH Charging Evacuation fip Chilled Water Outlet lt Flange Connection Flare Connection e cia 3 Solder Connection Unit side Refrigerant Cycle Se elm A E No Name No Name 1 Compressor 12 Sight Glass 2 Air Side Heat Exchanger 13 Compressor Safety Valve Option 3 Water Side Heat Exchanger 14 Stop Valve Option 4 Biflow drier 15 Stop Valve Option 5 Electronic Expansion Valve 16 Compressor Dual Safety Valve Option 6 Check Valve 17 Stop Valve 7 Stop Valve with check Joint A High Pressure Gauge 8 High Pressure Switch B Low Pressure Gauge 9 Pressure Sensor Low C Stop Valve 10 Pressure Sensor High D Charging Cylinder 11 Pressure Relief Valve E Vacuum Pump wore R407C shall be charged by LIQUID pag 168 SMGBO0003 0 11 2006 Maintenance HITACHI Inspire the Next P
21. 100 SA 05 Go dines RN tss 104 Eee oreet OOO 108 521 Outline of alle RIGHE esa 108 SPA A PP A 109 5 2 9 Failure diagnosis method 2 a A AA 111 5 3 Analysis and countermeasure of abnormal rUNNINQ ccoocccccccocccnncnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnrnnnnnnanennos 141 5 4 Thermistor characteristics dl iia A bc 145 5 4 1 Thermistor temperature characteristics All temperature except discharge 145 5 4 2 Thermistor temperature characteristics AMbient ooocccconncccccconncnnonoccnnnnoncnnnnnncnnnononnnnnnnnrennnnnncinnnnos 146 5 4 3 Thermistor temperature characteristics Discharge gas 147 pag 83 SMGB0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next 5 1 Initial check In case of abnormality in Chiller unit check the following items firstly N Check Item Check Method 1 Is power supply or fuse broken Measure secondary voltage of breaker and current carrying of fuse by tester Pull out the connection of secondary side in Transformer and measure the voltage by tester Confirm if the voltage corresponds to the indication in Transformer Transformer in unit Red 30 V Red Blue 220 240V 16 3V
22. 68 4 13 Switch for confirmation of high pressure Cut ooocoocinicocncccccccconccnccnnnnononnncnnncnononnnonancncnnncnnnnrrncnnrnnennninnnos 69 4 14 Antifreeze control in 69 4 15 Saving energy priority mode silence priority mode night shift only cooling 70 4 16 Defrost only air cooled heat pump 72 4 17 Thermo off selection function nenne nnne nnne nnn nnn nnn nnn 75 pag 5 SMGB00053 0 10 2006 Contents iH ITACHI Inspire the Next SS FO A 83 MEI ere TRENT T RO 84 s PEN 616 pole Li pe NN EN e 108 5 3 Analysis and countermeasure of abnormal running cccoocccccocnnconccncnncononncononncnnnnnnnnonnnnnnnnnnnonannnnnanos 141 5 4 Thermistor CNAlACISIISUCS E 145 Os VSI ANS RU T 149 6 1 Maintenance criteria cccccseccescseessenessesseccssecesceassesssouersensousesccousessenouseusescosseesensessessoueresssosersesess 150 6 2 Maintenance criteria of Screw COMPSeSSOM ccccccccccsecccceececceecceceececeeceseececsueessuseetsuseessuecesaneees 152 6 3 Maintenance of Water Quality ooocccconnnnccccnonnnccnnononncnnnnnnnonnnncnnononnnnnonnnrnnnonnnrnnnnnnnrnnnnnnrrnnnnnanennnns 153
23. 38 3 3 1 Model R C H UE 40 A00AGZ 38 3 3 2 Model R C H UE 280 400AG2 Secondary POBC oococooonccnccccccnnoconcncnonnnccnnnononancnnnnnnnonnrrnnnnnnnnnnrnnnnnnnnannnns 39 3 4 Input Output PCB nnn nnne 40 COP AO IU PLA UL COm H O 40 3 4 2 Model RGUE 28074008062 unbex ti tax ened tn E 41 3 4 3 Model 40 24 CA 42 3 5 Power Wiring Diagram MCB n nnne nnn nennen nnn nnns 43 3 5 1 Model R C H UE 40 80 iine trn tenete hk x hx en bb Qua hu th Eua US Fu XE RU Eb eu uA 43 3 5 7 Model R C H UE 100 160 2 tiran DUE 44 0 Model ISICIFDUE 180 240A 2 ai e 45 9 544 Model R O BHUE 2809 320 vU hito 46 3 55 Model TS C PDUE 39509400 A G2 dns 47 3 6 Diagram abbreviations descriptions 48 pag 31 SMGB0003 rev 0 01 2007 Electrical Wiring HITACHI Diagrams Inspire the Next 3 1 Power Wiring Diagram ES 4 _ i OPT CARI E 14 VIDE lt CGV gt lt gt p d L is Mi EFIREFREF
24. a m a i i E fm 13 F A a wh h j E gt i i el T ru A DN AZ Lg EN 4 P a on Heo WALL s 5 4 7 ey A m m Ur 516 m _ pag 165 SMGB0003 rev 0 11 2006 Maintenance HITACHI Inspire the Next 6 8 Refrigerant cycle diagrams Gauge manifold DS Option de G Chilled Water Inlet gt m Charging Evacuation Chilled Water Outlet Ps Unit side 4 __ __ Flange Connection Flare Connection Solder Connection Refrigerant Cycle No Name No Name 1 Compressor 12 Sight Glass 2 Air Cooled Condenser 13 Compressor Safety Valve Option 3 Water Cooler 14 Stop Valve Option 4 Filter Drier 15 Stop Valve Option 5 Electronic Expansion Valve 16 Compressor Dual Safety Valve Option 6 Check Valve 17 Stop Valve 7 Stop Valve with check Joint A High Pressure Gauge 8 High Pressure Switch B Low Pressure Gauge 9 Pressure Sensor Low C Stop Valve 10 Pressure Sensor High D Charging Cylinder 11 Pressure Relief Valve E Vacuum Pump wore R407C shall be charged by LIQUID pag 166 SMGBO0003 0 11 2006 Maintenance
25. Chilled Water Inlet q EM Chilled Water Outlet hs 9 E a No Name Compressor Air Cooled Condenser Water Cooler Filter Drier Electronic Expansion Valve Check Valve Stop Valve with check Joint High Pressure Switch Pressure Sensor Low Pressure Sensor High 11 Pressure Relief Valve 12 Sight Glass 13 Compressor Safety Valve Option 14 Stop Valve Option Y e wore R407C shall be charged by LIQUID pag 167 SMGB0003 rev 0 11 2006 HITACHI Inspire the Next manifold A Gauge 2 Charging Evacuation Flange Connection Flare Connection Solder Connection Refrigerant Cycle Name Stop Valve Option Compressor Dual Safety Valve Option Pressure Switch Solenoid Valve Capillary Tube Economizer Strainer Stop Valve High Pressure Gauge Low Pressure Gauge Stop Valve Charging Cylinder Vacuum Pump Maintenance HITACHI Inspire the Next S A 2 D 2
26. lt 1013604 01 SESS 1 as 1812 0252 90302 CAS scm ESPERA T i le as css LOOT 6 7 pm N NINN IN NIN IV LAC O V Viv v 6 Lc Le Los Le We e S 46 US oc 1Sy LZZNOd otza lav 8L2NOd LEA 91008 vizNod lt B 253 gm Suh 4 gt 16156 lt OOOO Qs o ilii isl 2 4 Pe eb SHAS SO SIR gt SENSE 9 OS reese Ey m ub ele el els lao Ss OS o gt gt gt m al a El NPN lt 102 gt C0C2 gt gt gt DS gt 1 lt 88l gt ANS A A m DS 2888208 2 e cU OMAH m OOOHOO GOOS OOS TER B 2 lt 961 gt E DB A as S S S S 5 12 2946 akz81 gt oo co la co J nuy IONI JJ _ Daag siu QUT JANA ES co Lo pens om N NINI CN N d vLv v Es gt CPBOd CE 18100409 J cl e ESSI uy 4 Un 15 ES S Eabb pgod P A M Il m kKiei gt J a d sis 2 16 ac spun saj9A9 lt 081 gt u Wiad lt 05 gt x K 8 g 59 IA FCN2 Is N YPRES ZZZNOd
27. amp Lo 5 O gt lt 705 gt C O cb 9077 HA oho Jr NE SAE 5 7 3 o o 2 5 5 T me a 3 C 34 1 Q a 099 m gt QN 515 OD Drawing Code 7 XEKS1038 r1 NOTE All the field wiring equipment must comply with local codes For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter pag 33 SMGB0003 rev 0 01 2007 HITACHI Inspire the Next 143 544 3 Cdd 133 111000 SN EN CN IN EIE INC CVE IL SIE ce CIC E TM CM 140 Hg Has LINO 2 91 Hat ME A DMA ae y 139 QS 9 SNE AUNT H 90 lt gt i135 lt 631 ii X 97795 90 53X08 1 09 EE lt yy9 T 9 gt 2115 Te 5 209 8 LINO mi 1989d ig OL OL oL 208 931 lt 78 T KW8 bns m p lt 8 TE v8 od 8 LINO NI C168 2980d
28. gt VO PCB CN25Ts PCB CN25Ts PCB CN25Ts PCB CN25Ts D4 os D5 Set Dip Switch correctly Replace printed circuit board for Relay PCB Troubleshooting HITACHI Inspire the Next rr SN rr SN Water flow Protection Switch Activation at 63W use Option PCB Monitoring Position PCB CPU PCB PCN10 Alarm Stop Reason Water flow protection switch is activated Is chilled water flowing Yes Is water shortage protection switch ON during pump running Yes Is 220 240V the voltage between connector PCN No LA No Check the pump Check water flow in the pump Clogging of water strainer Check the water shortage protection switch 10 PIN1 and connector No PCN 10 PIN3 on the Printed Circuit Board for ii CIU PCBC Check wiring Yes Check the Printed Circuit Board for CPU PCBC System Controller Connection Abnormality at CSC 5S connection Alarm code Dn 3 D3 PCB Monitoring Position PCB CPU PCB CN11 Alarm Stop Reason At remote setting by remote controller transmission is not performed for 3 minutes once it is started r1 No Is setting of Dip Switch Set Dip Switch correctly correct Yes Check the setting of CSC 5S side pag 136 SMGBO0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next Ons Alarm cod
29. 3 N L Lo ey L E JE e N V Le EN m gt gt 5 2 E 900 B 32 e E 2 gt lt 2 gt lt 9 BHE 2 9 E 1765 89 596 E com o m9 0 055 gt A lt page 9 oF Spe Ss 9 ex B 2 Li W Rv o Ll z O gt ANO O gt ix ago O SN VIG x Sa Via N M v N A442 a eae iE Ye 233 S 95 8 OND _ gt oof ALY v ER S OLM Ny 5 5 OZ v ze m ecd O a le ccc So MMEEE EE A MMC ccc 9 A Q i O O lt er 2m O O cO lt Lo oj Lo oy Le LL A n O LO MM gt 5 M ZT Fo o Fo of DA O O lt gt 9 STD O lt gt lt gt lt 51 gt o i ON Lo oJ Lo oJ O O 3 pm LL LO o bres LO gt a pups O O Lr EZ m 22 ES PY gt lt gt lt F c 9 2 5 a Tet lt r gt A s oco nod lt ores i lt 9 gt SOEs E 5 9 E cu a O SIL 5 ESB A Ee A N Ex CM ooo 5 2 cue e O oo oO cb cd
30. 7 O 2 3 a Y Gauge BEST manifold eV m 14 HSH V FAN des 25 SE _ E BJ 1 A a Lo 22 Option 3 Ga 1 83 L4 2 ae aes H lt LIA an SE 9 O a 2 2 A TENA H an lt Option 1 Y Option e E mE 13 5 14 US 9 2 19 Chilled Water Inlet gt 1 t T H Charging Evacuation 2 E 1 Chilled Water Outlet lt Pss No Name Compressor Air Side Heat Exchanger Water Side Heat Exchanger Biflow drier Electronic Expansion Valve Check Valve Stop Valve with check Joint High Pressure Switch Pressure Sensor Low 10 Pressure Sensor High 11 Pressure Relief Valve 12 Sight Glass 13 Compressor Safety Valve Option 14 Stop Valve Option 15 Stop Valve Option wore R407C shall be charged by LIQUID 169 SMGB0003 rev 0 11 2006 t Flange Connection Unit side Flare Connection Solder Connection Refrigerant
31. P N GAN m EC o o p SCC 174562 pm om m A aE HOE TRA TGF 444 79 pm cj jd lt Elo lt 66 gt fd 44043 934409 IN Drawing Code XEKS1050 r1 HITACHI Inspire the Next
32. Evaporator Inlet Air Temperature 6 C WB page 16 SMGB0003 rev 0 01 2007 Product range and H ITACHI specifications Inspire the Next MODEL RHUE80AG2 RHUE100AG2 RHUE120AG2 RHUE140AG2 Cooling Capacity kW 195 246 296 338 Heating Capacity kW 185 254 305 371 Total Power input in cooling kW 69 6 85 4 104 5 119 6 Total Power input in heating kW 67 7 89 0 108 6 135 5 Height mm 2 430 2 430 2 430 2 430 Outer Dimension Width mm 1 900 1 900 1 900 1 900 Depth mm 2 500 3 800 3 800 5 500 Cabinet colour Natural Grey Net weight Kg 1 950 3 050 3 250 3 670 Compressor type Semi Hermetic screw type Models 60ASC Z 40ASC Z 50ASC Z 60ASC Z Quantity 1 2 2 2 Oil heater W 150 150x2 Capacity control 2 Control Water side heat exchanger Brazing plate type Air side heat exchanger Multi Pass cross finned tube Fan Motor pole kW 0 38 8 Quantity 6 8 8 12 Refrigerant type R407C Factory charged Flow control Electronic expansion valve Number of independent circuits 1 2 2 2 Quantity of refrigerant 64 92 82 96 Oil type JAPAN ENERGY FREOL UX300 Ester Water pipe connection Inch 3 M EON Victaulic 2xInlet 2xOutlet Control system Micro processor control Chilled water outlet temperature 10 Option 5 15 Heated water outlet temperature C 35 55 Condenser air inlet temperature C 15 46 for cooling operation Evaporator air inlet temperature DB 9 5 21 WB 10 15 5 for heating operation Permissible water
33. lt F1 A F1 A 2 e 1 0140 XL y y y T 139 as L viel ove L gt VEA LOIN m c1 SEED ts ED tao EET Eso 20 lt 969 gt de 90 SW C SIG 39 lt 6ZE1 gt 939 X86 1 K199 S3X0g 12859 leds ods Izas 53 08 669 wio IN IAN IA IA Je M V ZNOd_ LINJ J 7 23 243 Sud 2 0 X91 JU DM NZ gt AEDS NEET OS LN Aas 946 11595 4445 gpg SCING gpg SCAN e IN von veci Y gt Y KZer A 888 5 5 N d ol See oo Hii cn Y Y 1 Yi UN ERRINA ARAN M LUNO iUo RANE EN PEERS VV V sees EEE 811 gt vici OLS L gt M lt 6 9 gt ZN Zi ZS Zip TN uisi ui YE LOTA AA 4 SA b Q 9 7 ERA lt lt 2 o Mcr M Qi ds pr ee WV FONO FOND LEONI LINO d dd 113 Bla jua o N 4 N 9244 6244 33 Ba v0 1 cogi V o m T9 T114N2 6 mn ido y ZHN aaz Y lo E lt gt C En En 4 MM M 1 t NN NN 0 T lt 955 gt ole lt 955 gt lt 018 gt
34. lt 88 gt poe Se SIDE C9 ME 9 9 qe P Geo Gesc ese s R E S 190 S NE or Be pr 1 5 5 81 gt lt gt Al 2 lt 981 gt uyy OND 661 ug 61 1 1 E TREO e SUE j lt gt 7 58 SASTAO p 1810 uv lt Z81 gt 40 IR I lt 081 gt Ut gk Uv 1 Y e TEAT S R if 1 INOS VLOZN d ZZZNOd tod somos 90004 4 5 SEL ET BEL EL El A N ATATATA N ALATA ALA A V A e 2 solos 5 995 A B M A 2 1 U ZNOJ 82d p Pu AW 900109 L U ZNO4 X ei EL 40 Ol T N upgod 1924 lt u 104 SE y ees 4 10 19 404 n 293 god E 5v 29v081 021 00109 08 0 3nd T lt gt jdeoxe syun y ___ ____ 19490 Y Drawing Code XEKS1044 r1 2 All the field wiring equipment must comply with local codes For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter pag 40 SMGBO0003 0 01 2007 ejoKo 151 ppubis ynding HITACHI Inspire the Next
35. CN3 correctly connected Yes Disconnect connector and No Replace Thermistor measure resistance Is the resistance correct Yes Replace printed circuit board for CPU Alarm code E Outlet Chilled Water Thermistor Abnormality PCB Monitoring Position PCB CPU PCB CNA for inlet CN6 for No 2 cycle Alarm Stop Reason Thermistor for outlet water temperature indicates abnormal value 42 12 1 cycle C1 12 C5 12 more than 2 cycle units Is Printed Circuit Board for No Plua Wirina Repair Control PCB connector 9 GENER CN3 correctly connected Stop by abnormality of chilled water outlet Themistor for No 1 cycle Yes iZ Stop by abnormality of chilled water outlet Themistor for No 2 cycle rn LL Disconnect connector and No Replace Thermistor measure resistance Is the resistance correct Yes Replace printed circuit board for CPU PCB The connector position differs from product model pag 126 SMGB0003 0 01 2007 Troubleshooting Product Model RCUE 40 80 AG2 RHUE 40 80AG2 RCUE 80 400 AG2 RHUE 80 240 AG2 Alarm code Abnormal Code E Alarm Stop Reason Thermistor for inlet refrigerant temperature at water side heat exchanger indicates abnormal value Is Printed Circuit Board for Relay PCB connector CN27correctly connected Disconnect connector and meas
36. utside and inner Rust Vibration 3 Refrigerant Circuit Refrigerant leakage General Capillary pipes Noise Cil leakage bleed Oil level Insulation Resistance Oil Heater Compressor Ageing of Vibration Insulation rubber Intermediate check 1 Intermediate check 2 Overhauling Condenser air cooled Fin clogging Water flow water temp Water quality Condenser water cooled Cleaning Drain water pag 150 Check Frequency A N A N A N A N A N once season once season A N A N A N once season once season once season once 3 000 hr once 6 000 hr once 24 000 hr water cooled 40 000 hr Air cooled once season A N once month A N once season SMGBO00083 0 11 2006 Criteria procedure Remarks Judge from aprox 1m Confirm if there is no abnormal noise from the control panel surface Confirm visually if there is no abnormal vibration Clean with cloths Perform repair painting with Anticorrosion paint Re tighten screws Confirm if there is no refrigerant leakage by using detecting device in each component and pipe connection parts As for checking for leakage in water cooler and condenser confirm it with the air discharged to water inlet and outlet and in this case water should be drained Perform visual check if there is no contact or resonance Confirm if there is no abnormal noise at starting o
37. 2 Capacity is controlled by bypassing the refrigerant moving the slide valve 7 a part of casing to a shaft direction by a hydraulic piston 9 The standard specification of motor 4 built in the casing is 200W bd A and start up Structure drawing of 40ASP H 40ASP Z Z o Name Material Main casing FC250 Discharge Screw rotor Roller bearing Motor Motor casing FC250 Ball bearing Slide valve Rod Piston D casing FC250 Suction E cover SM400B Terminal Gas strainer C amp Q QG C e e t C cover SM400B pag 163 SMGB0003 rev 0 11 2006 Maintenance HITACHI Inspire the Next Structure drawing of 50ASP H 50ASP Z 2 Name Material Main casing FC250 Screw rotor Roller bearing Motor Motor casing FC250 Ball bearing Slide valve Rod Piston D casing FC250 E cover SM400B Terminal Gas strainer GO C e e C cover SM400B Structure drawing of 60ASP H 60ASP Z Z o Name Material Main casing FC250 Screw rotor Roller bearing Motor Motor casing FC250 Ball bearing Slide valve a a econ Rod Piston D casing SM400B Terminal Gas strainer E C cover SMAOOB pag 164 SMGBO00083 rev 0 11 2006 Maintenance HITACHI Inspire the Next Start up method Normally more than 22kW compressor has Y
38. Auxiliary Relay Arn malfunction pag 115 SMGBO0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next Alarm code pet Activation of Discharge Gas Thermistor Td Alarm Stop Reason PCB Monitoring Position 1 Discharge gas temperature from the No 1 Cycle PCB I O PCB CN24Td compressor is increased to 130 C and No 2 Cycle PCB PCB CN24Td ne No 3 Cycle PCB I O PCB CN24Td 2 During the time counting in 1 minute No 4 Cycle I O PCB CN24Td temperature is increased over 140 C In case of n 2 alarm stop 3 retries during 90 minutes Compressor stop automatic restart in 3 minutes Retry Code No 1 Cycle C1 P5 No 2 Cycle C2 P5 No 3 Cycle C3 P5 No 4 Cycle C4 P5 No 5 Cycle C5 P5 Is connector CN24Td on No the Printed Circuit Board Plug correctly and for Relay PCB correctly repair wiring connected Yes Pull out connector and No measure thermistor gt Replace thermistor resistance Is resistance correct Yes Yes Shortage of refrigerant gas leakage Check valve malfunction Clogging of expansion valve Expansion valve opening check Expansion valve malfunction Check Printed Circuit Board for Relay PCB pag 116 SMGB0003 0 01 2007 Troubleshooting z Alarm code a Alarm Stop Reason The electrical motor of the compressor is overheated and internal Thermostat is acti
39. Blue Orange 19 6 V m Orange O qu gt a m O 2 Does secondary power of transformer supply correctly Red 26 7 V Red Blue 220 240V 17 6 V Rated Load O Blue Orange 17 6 V O Orange Circuit and voltage CPU PCB Confirm if wiring is not loose nor wiring is wrong referring to the electricity circuit EM nsertion of connector of Thermistor or Compressor Sensor iring loose Wrong wiring Insertion of connector of Flat Cable Insertion of connector of Transformer Connector Insertion of each connector in 200V circuit pag 84 SMGB0003 0 01 2007 Troubleshooting HITACHI Inspire the Next Configuration for standard version Standard values are the ones shown on PCB drawing and table below PCB RHUE40 400 AG2 PCBs SW5 RSW2 RSW1 s ES ETE ju Co E MODEL DSW3 DSW4 RSW5 RHUE40AG2 1 2 3 456 7 8 9 10 2 c RHUES50AG2 2 12345678 9 10 oy 3 RHUE60AG2 123 4 5 6 7 8 910 oy OFF Eu E 1 2 3 4 5 6 7 8 9 10 gy al 5 RHUE70AG2 0 12 3 45 6 7 8 9100 RHUE80AG2 47 OFF 12 RHUE100AG2 12345678 9 10 oy LO RHUE120AG2 1 2 3 4 5 6 7 8 9 10 o 5 RHUE140AG2 EB Boe OFF ini EE 6 7 12 RHUE160AG2 192 3 4 5 6 7 8 910 o 47 Y OFF LO 12345678 9 10 gy 5 12 12345 6 7 8 9 1004 OFF
40. Check the state of switch from cooling to heating and vice versa Result write the value or X Good NG Good NG Good NG Tightened No tightened Tightened No tightened Yes No Done No done Yes No Done No done Good NG Good NG Good NG Good NG Good NG Good NG Good NG Good NG Good NG Good NG Done no done Good NG Abnormal Normal Good NG Good NG Good NG Good NG Good NG Done No done 26 26 Me C m3 h MPa MPa The refrigerant is HFC type refrigerant whose ozone destruction coefficient is ZERO If other refrigerant is mixed the property of refrigerant is changed and may cause a problem The following points should be taken into account on its handling Refrigerant should be added in liquid state not in gas state R407C is nonazeotropic refrigerant mixture and compositions of boiling point are different Therefore if it is added in gas state refrigerant easy to evaporate is added and refrigerant hard to evaporate remains in a refrigerant tank Confirm if the tanks specialised for R407C The tank should be set so that refrigerant can be added in gas state The valves or hose for charge should be specialised for R407C pag 160 SMGBO00083 rev 0 11 2006 Maintenance HITACHI Inspire the Next Freol UX300 of Japan Energy is used as a refrigerant oil due to its high compatibility with R407C Other refrigerant
41. O zm EE Ta RE O zZ VIV Y a D V AA n st 28 ex T TIS E gt lt Co Sp Uo sb E z O EI E ce PE 8 4 ye NA je M Pr lt gt M VO Lo o dde in Z gt N fo el lt gt d 2N ON 977 9 9 9 li Bd a lt ES CO gt lt C2 O gt pi d Li C C 3 Drawing Code 7 XEKS1042 r0 NOTE J All the field wiring equipment must comply with local codes For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter pag 37 SMGB0003 rev 0 01 2007 HITACHI Inspire the Next 3 3 Control PCB PCBc Electrical Wiring Diagrams
42. WH Y goo ES RES Ls Ss HS UA mo mo Shing QNO PERIS BLEL gt vigi KOLEL gt pere zPB5d a EAE SIS 6021 zo 12 99 907 te i ul EDSON uoo 5 D Tan uhi d Q ese eee lt 611 res ves Z FA 5 ACASO NO ED LID NO IONO 9299 ep 919 o SEE 9 DAD oo H G v 924 4 8244 LS ES Es LS Le LS o eV FQOWOPOWS FOND KONO LINO BS 1147 944 5 o lt 60 1 gt lt 70 1 gt lt 0 1 gt lt 20 1 gt ZE MW E m mi Wo Y A A la NP m j 7 SER 4 lh 492615 E AN VV S124 Jd Sleludd i 11353443123 143 UTC lt 016 gt Ly ETS lt gt lt 609 gt Scc A ILA ILA lt gt lt 805 gt lt gt ES 5 IS Y Y o o p 71 m E M ix 1 101 5 s 55 lt 705 gt 939 lt 2 id lt lt 1 gt lt lt 1 gt LTH ava M3ddOO For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter All the field wiring equipment must comply with local codes SMGB0003 0 01 2007 2 36 Drawing Code XEKS1041
43. Xeno X mA I p ATA AT OgON ae ae o de lt L gt 3 00 PAER oT 50122 6 10009 SNE AUNH 4 ied o1 5 N E 145 5v 049 lt 099 gt O gt f E a lA Es gt i VEN ILGAN SIN 21 9 gt 945 I vas zas E 2099402533 SCAN 20 5099 gt T 223 For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter All the field wiring equipment must comply with local codes SMGB0003 rev 0 01 2007 2
44. at the first compressor stop after 24 hours since the last zero point adjustment to modify the error between control pulse number and real pulse number If compressore has not stopped for over 200 hours compressor is to be stopped forcedly forced Thermo OFF and zero point is adjusted Then unit is re started after 3 minutes guards It is possible to cancel this forced zero point adjustment by Dip Switch selection on expansi n valve PCB 4 During normal operation Temperature of compressor suction gas superheat is calculated from the temperature detected by Thermistor of compressor suction refrigerant gas and the pressure detected by the sensor for suction pressure and the opening is determined by calculation value to reach target superheat Control cycle 28 seconds 5 Prevention control for discharge refrigerant gas overheat When discharge gas refrigerant temperature is over 100 C expansion valve is opened forcedly and excess increase of discharge gas refrigerant temperature is prevented Td control pag 79 SMGBO0003 rev 0 01 2007 Control System H ITACH Inspire the Next 6 Prevention control for freezing If it is detected that refrigerant inlet temperature of water side heat exchanger is decreased expansion valve shall be open so that decrease of refrigerant temperature is prevented which leads to anti freeze in the water side heat exchanger a Normal Control At finishing starting unload 9 C
45. i gt DOA FON2 Los y S FCN1 WLOZNOd ZZZNOd 0004 0cNOd 02N0d 900004 D 2 O y S S eR sg Lj o A AI Al Al AL a Al Al ATA AJA ATA ug iz v as gs Bes ve Eo ZP 5d PBOd vivivivl 5 uii Su lt 2900 1 a ud sun sejofo g 8 u O V X 1 1 u ZN94 2 pm p 103 Sito 5 L 4 ZNO4 gt gt 7 Z o 7 90704 LPgOd 4 lt u 104 Og 5 12894 u044 104 N el el dV V Ne y ob 1019 oos 1IN9JID JOYS y y ass noumqous VA x 001 001 09 06 07 4 3 idaoxe syun e go yun ajo 1019 NW130 1 Y Drawing Code XEKS1047_r1 For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter SMGBO0003 0 01 2007 pag 42 Electrical Wiring Diagrams 3 5 Power Wiring Diagram MCB Option HITACHI Inspire the Next F O Tu
46. 153 Water to USC P 153 Gas Re Wal T 153 6 3 3 Maintenance method of Water 155 Cleaning of water side heat 157 641 I MOMO RE 158 Check items in daily 160 Caution on handling of 407 160 RON A AA 160 6 6 2 Refrigerant ON rr 161 6 6 3 Refrigeration cycle complete parts 162 6 6 4 Reference materials REIR 162 Manual at compressor overall check and parts 162 6 7 1 Collection or Temor inr Reda exp Rees usur tea ias nee Edad nds 162 6 7 2 Structure and Start up method of 163 Refrigerant cycle 166 6 8 1 Refrigerant cycle diagram of Hitachi Air Cooled Water Chiller RCUE 40 50 60 70 100 120 140 180 210 280 350 2 166 6 8 2 Refrigerant Cycle Diagram of Hitachi Air Cooled Wate
47. Fan single retry H z rH Abnormal code during retry control in Fn 4m Fn 5m Z worzs Cycle N n 1 5 m Fan N m 1 4 In case of fan abnormal operation retry is performed in every case and in case that the same abnormal operation occurs in specified times within specified period unit is stopped by alarm Retry 1 Retry in fan by itself compressor keeps operating Re start in 10 seconds 2 Retry in cycle by itself compressor also stops Re start in 3 minutes In case of retry in cycle by itself retry is indicated like above list of state at inverter retry In case of retry in fan by itself it is possible to confirm which fan is being retried in check mode pag 99 SMGB0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next Every Chiller is delivered with the correct priority configuration Master PCB and slave PCB In case of a Control PCB delivered as a spare part it will be necessary to set the correct priority configuration because it is not known where it will be applied Chiller model In case that this priority configuration is not correct the Chiller cannot operate See next point Problem detection When the priority configuration is not correct on the 7 segment it is displayed rrt LL LU Lt 7 segments on PCB shows the above message and no alarm message is shown Configuration To establish the right priority configuration in each PCB it is necessary
48. Location OFF Band degree 3 0 Set by DSW5 5 pj pin Set by DSW5 3 amp 4 pin Water Oultet Temperature Set by Inlet Water Temp RSW6 Neutral zone when system is stopped with Thermo Setting OFF MODE Temperature Set by DSWS Load Down Mode 1 amp 2 pin Y Standard setting pag 89 SMGB0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next DSW5 6 Pulse width in Seconds for Load Up Slide Valve in compressor in LOAD UP1 Mode SVn UP Coil energizing Figure 6 Location OFF Time minute 24 DSW5 7 8 Pulse width in Seconds for Load Up Slide Valve in compressor in LOAD UP2 Mode SVn UP Coil energizing Figure 7 8 7 8 7 8 7 8 Location ON ON ON OFF OFF ON OFF OFF Time minute 2 4 6 8 DSW5 9 10 Frequency of Load Up Slide Valve in compressor SVn UP Coil energizing Pulse width DSW5 6 A 4 gt Pulse width DSW5 9 10 PCB DSW6 Optional Function B PCB DSW6 No function Keep DSW6 4 in OFF DSW6 2 ON Pump freeze protection activated T 2 C OFF Pump freeze protection disabled DSW6 1 3 4 OFF Not available Pulse width DSW5 6 4 5 LOAD UP2 HA gt Frequency Pulse width DSW5 9 10 PCB DSWT Optional Function C PCB DSW7 No function DSWT 1 2 Temperature Range for Brine Opt DSW7 1 2 Both in ON this function is not available Figure 1 2 1 2 1 2 Location OFF OFF ON OFF OFF ON Time R
49. start up partly waiting start up as well as normal start up due to its high start up current All Hitachi self sealed screw compressors of rated output more than 22kW adapt A start up system due to its high performance from the view of start up current Like shown in the figure 9 18 at start up coil of the stator is connected as a star and 1 root3 of power voltage is added to each phase When motor is accelerated and compressor starts to run normally the connection is changed to a delta AA to add the power voltage to all phase fully Start up method 7 1 x Line voltage 1 Th M m AA L 5 PETITTITTDPES 4 MA cy E K gt e or 95 Y 2 yo a UL gt mE _ l ee ib o cc E G gt At start up Y connection At operation connection The real wiring is shown in the below figure 1 The connection of U X V Y and W Z is a motor which is inside of screw compressor 2 At start T connection 52C 6C ON 42C OFF 3 Atoperation AA connection 52C 42C ON 6C OFF Real Wiring A AA H A F cad 820 fo mA y s a Fi A d 1 7 a i DA dica he pe 4 hn F p Y ay A ri o A po EJ E F zil 5 4 Fi E ms A E UD d E Db WT A E m e i i
50. Current Ti SW6 3 efrost by Ambient Temp UNE Limit m ewe su 099908099 DSWS Continuous copocity control DSWS Set DSW4 anual Set B Compressor Delay Time MENO Mio Option B Option JP 19998 185581 T Io E o pics DSW7 E A CAUTION It is recommended that His 3 After confirmation alarm should be released by unit stop operation When alarm be performed at load f up state operation for is released high pressure cut confirmation test is also released a few minutes after start up Low pressure is decreased by closing the stop valve Then low pressure cut device is activated Alarm stop Activation conditions for low pressure cut control gt Activated in 3 seconds at low pressure sensor detection pressure of below 0 049MPa It is difficult to check the temperature controller accurately in an installation place however the following method helps to grasp the setting state roughly 1 Temperature controller is set in high temperature side for chilled water and in low temperature side for warm water 2 Measure the set temperature at compressor stop and compare it with actual inlet water temperature is possible for screws to be loosened at delivery Take 10 15 seconds at least in one position to check the leakage pag 26 SMGB0003 rev 0 01 2007 Test run H ITACHI Inspire the Next 2
51. Fan Speed control PCB PCB Monitoring Position PCB CPU PCB CN11 PCB Fan control PCB CN8 PCB Fan control PCB CN8 on Printed Circuit Board ae EE CE Set Dip Switch correctly PCBH PCBJ is correct Yes Is connector CN11 on the No Printed Circuit Board for sto CPU PCBC correctly repair wiring connected Yes Is connector CN 8 on No the Printed Circuit Board Replace printed circuit for Fan Speed Control board for Relay PCBH PCBJ correctly connected Yes Does fuse EER EFS1 No on the Printed Circuit Board for Fan Speed Replace the fuse Control PCBH PCBJ have electricity Yes Is 23V in the connector PCN11 on the Printed No Circuit Board for Fan Speed Control PCBH PCBJ have electricity Yes Is the voltage in the test Yes Is wiring of transformer Replace the transformer breaking No ae Wiring check connector check Power circuit failure pattern on the Printed No Circuit Board for Fan Speed Control PCBH PCBJ Ircuit Board to VCC05 GND 5V pag 134 Speed Control PCBH PCBJ SMGBO0003 0 01 2007 Troubleshooting J L7 Flicker pt Alarm code Alarm Stop Reason HITACHI Inspire the Next During Activation of Pump Stop Control by Excess Increase of Water Temperature PCB Monitoring Position Water temperature is increased to 65 C
52. Sees LY vy lt CVe gt ae O lt gt occ 9 v9c EF oj lt gt C X pua L 2 IIT 2 D z Ts LL C O O 7 Fo LO Qoo Za C N O gt i C C ada o O C a O gt oo olo Ol O OHO E O O O LL gt O MI O o R L1 3N 380 415V 50Hz Drawing Code 7 XEKS1037 r1 NOTE All the field wiring equipment must comply with local codes For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter pag 32 SMGBO0003 0 01 2007 Electrical Wiring HITACHI Diagrams Inspire the Next 4 mE Ha
53. forced Thermo OFF forced capacity control is performed by external signal attending to special needs of load Control is performed externally by a no voltage contact for each compressor It is possible to adjust 2 setting temperatures 1st temperature is set by rotary switch and 2nd temperature is set by key operation on the 7 segment According to the usage state of loading side setting temperature can be switched by external signal no voltage contact input Control system Item Ice Heat storage operation by external order Fan forced operation function High pressure cut confirmation test only cooling Pump automatic operation function in winter Saving energy priority mode option only cooling Silence priority mode option only cooling Night shift mode option only cooling Thermo OFF selection function pag 51 SMGBO0003 rev 0 01 2007 HITACHI Inspire the Next Contents Full load operation is performed by external order no voltage contact input Chiller unit stops when the water temperature reaches the setting value no capacity control Dip Switch setting is necessary It is possible to operate only fans by an external order as a countermeasure against snow while units are stopped Run or Stop operation is performed by a no voltage contact While the actuation of high pressure interrupt device is confirmed unit is operated with fan forcedly stopped Push bu
54. 1980 zPB5d zP85d 60 1 lt lt Z0 M ibt 5 sg WO Xo S oa lt eel 611 lt sisi lt ne yor Z h T 7 Newer AS S a o H 8c y 5244 FOND OW FOND E be ge POST lt 051 gt PORT lt 20 51 gt E DT lt gt e Saal Wo lt lt y UNO AA ZINO ERE Wy wn E T SEE 4 dd j IPEE Y AN 289 3 e a 2480 o 989W 13533363533 133 lt 016 gt lt 955 gt lt gt lt 609 gt Y SCC lt 805 gt eve N 0n A O o o s Lo s Cu Y d gyics Ww 9d lt 2 a as O 044 e i 18g 1 All 39 2934 796615 IN L1H ava M3ddOO Electrical Wiring For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter All the field wiring equipment must comply with local codes SMGB0003 rev 0 01 2007 2 47 Drawing Code XEKS1037 r1 Electrical Wiring Diagrams 3 6 Diagram abbreviations descriptions HITACHI Inspire the Next Mark MCn MF11 N6 MI CMC1 CMCsn CMCDn CMF11 N2 EFCn ORCn EFF11 N4 ITC1 n ITFn5 n6 CHn ARn H R PSHn Pdn Psn THMi THMWO1n THMr2 n THM
55. 4 Instruction at delivery When delivering the unit after test run give an appropriate explanation to customers about operation method and periodical maintenance method etc as well as the following items 1 Apply the electricity to oil heater Do not turn off the power source of unit during normal use in order that electricity is applied to oil heater In case of re starting the unit after a long time turn on the power 12 hours before operation start Oil heater avoids the damage of shaft and rotor preventing the foaming of lubrication oil in compressor at start up Heats oil to approx 40 C 2 If chiller unit is not used for a long time drain the water out of pipes using water drawing or air drawing plug 3 Anti freeze in winter To avoid freezing which might damage devices or pipes it is needed to be installed some insulation in pump and water pipes This chiller has a function to operate chilled warm water circulation pump automatically in case of decreasing outside temperature during unit stop therefore do not turn off the power source during season In case of turning off draw the water out of chiller unit 4 n case of fire Turn all power OFF 5 The unit will not display failure in spite of the following cases During operation and after unit stop if there is water flowing noise However this is a refrigerant flowing noise and it is not a failure Compressor is not operated fuses are out
56. 5d gt gt s Wl 12 9 92 Sl oe ir A ao lt 104 lb TEMAS 222 000 T lt ca gt e s a8 A GC mom A cz lt gt ema 9 z e 1 y b lt 68 gt Qo g ET 95 DIM Zeus 95 E lt 99 gt 08 EUN G E oS a E xi Oe 95 syun 05760069 peel T 139 Kiddns ur 5 63 6 gt Z08 gt OL lt gt 7 QO 45 evzi xL lt 81 gt x 09 NASA 9 gt 90 UE US chs SE SESS lt gt 10004 oksz aaa o IT 22 BEER eG Xp 88 55 GL MSC SMSC t Ee NI d D 2 0 Sn Qo H H di 15 Si OL ENS gt 5 5 x dy 935 935 0 doo cad ca Ela Se BROMO 8 EAS lt jees 0 ii Y L 56 boll 36 156 156 5 lt gt b26 91556 lu As Edo lt gt EL SO E ER N sia 877 DD MSY a A lt z gt SS E SES S LMSC E 0 Pe ES Ae syun sajo o Z lt 104 7 EJ 91 Q gt c ve CON RE lt OL gt MNO Sta Bs 2200 21 9 X 3 Edu 2 561265 M iid Yd SLS gt WONT VCN20 mon 55 371 65432
57. 6 4 Cleaning of water side heat 157 05 Check items in daily OperalilOn ccccncnicicdteccdescsnnecadmcnssenceeerellesassecednesseacsndensdedacheomsdesethsarankseueaseaenodeadeess 160 6 6 Caution on handling Of 407 160 6 7 Manual compressor overall check and parts 162 6 8 Refrigerant cycle sd esie an Ea 166 O nn O 170 6 10 Vacuuming FOC SON B ia a ea 170 6 11 Additional refrigerant InSertiON c oooonnccncoconcnnccnonnncnonononnnonnncnnnnnnnnnnnnnnnnnnonnnrnnnonnnrnnnonnnnnnnrnnrrnnnnnnnnnnns 172 pag 6 SMGBO0003 rev 0 10 2006 Contents iH ITACH Inspire the Next Units Code List wore MODELS Please check according to the model name which is your air conditioner type and how it is abbreviated and referred CODIFICATION to in this service manual AIR COOLED WATER CHILLERS SCREW TYPE Indication Indication Indication MS Model BE Model code Model E Model Indication code RCUE40AG2 8E041072 RCUE100AG2 8E101072 RCUE180AG2 8E181072 RCUE280AG2 8E281072 RCUES50AG2 8E051072 RCUE120AG2 8E121072 RCUE210AG2 8E211072 RCUE320AG2 8E321072 RCUE60AG2 8E061072 RCUE140AG2 8E141072 RCUE240AG2 8E241072 RCUES350AG2 8E351072 RCUE70AG2 8E071072 RCUE160AG2 8E161072 RCUE400AG2 8E401072 R
58. 6075 lal TERES lt 505 gt zu 7 lt gt 805 Pd Eo HOS lo ASLY 08 rab cvizs s G PE Ex 9 15 lt gt 2 tele lt 2 1 o ello He N3ddOo IN pag 46 Drawing Code XEKS1051 r1 8N9 09715
59. 69 SMGB0003 rev 0 01 2007 4 Control System 2 Automatic release of antifreeze control HITACHI Inspire the Next This operation is released only when ambient temperature is over 4 C Pump continuous C operation Pump intermittent operation operation 5min stop 55 min X Pump stop Change course of chilled water temperature Water temp tw C Water temp tw C Ambient Temp ta C arren TION Ambient Temp ta C In case that ambient temperature of chilled warm water circulation system is lower than that of the Unit installation place Thermostat for ambient temperature shall be introduced in the place with the lowest temperature and shall be connected to pump operation order circuit in parallel 4 15 Saving energy priority mode silence priority mode night shift only cooling Saving energy priority mode silence priority mode night shift only cooling applications 1 Standard mode control revolution number control suitable to ambient temperature Good balance from the view of saving energy and silence 2 Saving energy priority mode control revolution number control tries to keep discharge pressure as low as possible at night or during midterm period Saving energy has the priority to silence 3 Silence priority mode night shift Smaller revolution number for silence purpose at night or during mi
60. 8 9 10 gy Y RCUE60AG2 1 2 3 45 6 7 8 9 100 Bii 12345678 910 7 OFF RCUE70AG2 OFF 0 123456738 910 2 Y OFF 12345678 910o Y OFF RCUE120AG2 12 3 45 6 7 8 9 10 on RSW5 RSW5 ale ala Slee 1 2 3 45 6 7 8 9 10 gy RCUE140AG2 mil lalalala FF OFF 12 345 6 7 8 9 10 gy RCUE160AG2 2 OFF m RCUE180AG2 1 2 3 45 6 7 8 9 10 04 RCUE210AG2 1 2 3 45 6 78 9 10 gy OFF lalalala m a t 12345678 9 10 on Y RCUE240AG2 2 RCUE280AG2 2 123 45 6 78 9 10 gy 1 2 3 45 6 7 8 10 on RCUE320AG2 i RCUES350AG2 123456789 10 gy 1 2 3 45 6 7 8 910 o a o RCUE400AG2 9m E c pag 87 SMGB0003 0 01 2007 Troubleshooting HITACHI Inspire the Next DESCRIPTION PCB DSW1 Setting of Low Voltage for Remote Control PCB DSW1 No function Dip Switch Setting MODE DSW1 of DSW1 NORMAL 12345 MODE On Now low voltage control OFF DSW1 S u 12 3 45 gy LO ON Hi Lo v DSW1 min 100ms 1 2 3 4 5 MODE 2 Pulse lon m PCB DSW2 Starting Delay DSW2 No function DSW2 1 2 Setting for Starting Delay of Compressor min Figure 1 2 1 2 1 2 Location ON ON ON OFF OFF ON OFF OFF Time minute 0 5 6 10 3 DSW2 3 ON Low noise and night shift Opt DSW2 4 ON High Efficiency Opt PCB DSW3 Mode Swit
61. ADO 89d 859 nup A 3l lt gt Q 1 F Ooo 97 SPO Goya 7 2 9944 Der E id 33 p 33 I NI SA 19 Y lV NO S x i LIND SELES Ly k 4 ZeJN 4 sogon ues 4 Caon mi ogon ors t 20155 y 016 6011 d 2292 606 lt 01Z gt 8011 06 806 607 PEL 807 T A AS AS ZN AS wi H3ddOO PRG A noan Sik lt H al a LL LL 1 11 rn Le 130 lt Qiu H3 ZH ca zm L 9ce1 25 LENO RD ao a MORAN X869 lt gt gt 2899 01 NW4 90 vtl iei 50 m 27992 lt gt Offi 735 6781 339 LED niin SKOFT gt 699 Y Vi LIN 0145 845 lods zas o3x0g8 mda N AR N AR MN EN ae v995 lt 599 gt 1 1 j E X08 3 SHJ Sua 9 T T X08 4 E NY 24 Meds dices Mesas feas dias S pre peur Y a Shes 901244 c JA frisii a 5 deb m n l 1 Y 1 ia Y ia D d FENO po NAE NUS y y gigi cb chc cb chc
62. AQ ry gt Lo ix Odo I oN Y T V rs e Y Y NAA 4 das 5 le ae VV olo o st M 8 INO o PL y VIVIV ALY Y D Ny AN M 00 9 d z e N N a O P umm Z e ao An NCC 6 24 0 Puy E a EE O D 24r oT ug N gt s O OL lt Q 1 lt VEO li E O 0 m rat Lo lt Lo lt Li OC Le um LO m o 5 lt Zl fo O e 5 ZA Es ral m SED lt LC lt Cal gt SS A lt gt ps N 235 M 2 Lo oJ O 0 WW E m gt O LL N O O 24 A gt lt gt lt a Xr O lt gt S SUE F ze TEE 9 lt gt ve M lt 055 gt lt 95 gt 5 LL iL E 2 cM cy 2 penne zi 5 E m Ee NAJA EE CNF ojo o S lt oo ala 0 ele O gt oo 99 c c C 1 L O N 5 O 10e CERO e al EN olo N Fool lt 905 gt X lt 24 4A 7X CM lt 505 gt O opo Foo N z fo fo fo 5 S L gt T gt LO 545 ON Drawing Code 7 XEKS1046 r1 NOTE All the field wiring equipment
63. Cycle lt Name Compressor Dual Safety Valve Option 4 Way Valve Accumulator Liquid Tank Solenoid Valve Capillary Tube Economizer Strainer Pressure Switch High Pressure Gauge Low Pressure Gauge Stop Valve Charging Cylinder Vacuum Pump Maintenance HITACHI Inspire the Next 6 9 Overhaul work Perform the work according to Dissolution and Composition Manual of Hitachi Half Sealed Screw Compressor When compressor is removed from refrigeration cycle high pressure part should be separated between projecting part flange of compressor and upper cover of oil separator Do not be separated between check valve and projecting part flange of compressor or collected refrigerant is ejected Projecting part flange of compressor Do not remove these bolts or refrigerant Is ejected Check valve Separate from this part d Check valve U pper cover of Remove these oil separator bolts firsly NH Projecting part flange of compressor E Upper cover of oil separator 6 10 Vacuuming Procedure Although refrigerant is collected to airside heat exchanger by the above collection operation itis necessary to be vacuumed due to that refrigerant cycle of low pressure side pipe and of water side heat exchanger are open Vacuum should be performed in the following 2 positions Stop valve for refrigerant insertion D part Check joint of compressor suction side E part Capil
64. Outlet water temperature of Chiller Unit is detected by Thermistor and based on this value compressor ON OFF and the most suitable capacity is determined Possible range of water temperature setting C Cooling 10 option 15 Heating 35 55 outlet water temperature control Capacity control 100 1595 stop The minimum range of temperature adjustment C 0 5 Restarting of unit after thermo OFF is done depending on inlet water temperature Outlet temperature 10 C A AT4 Tsc Inlet temperature A AT3 Y Tsc setting temp AT1 v Tsc AT1 T1 Stop temp 0 5 2 0 C PONE lt 4 B3 l Load up status Load up II Load up status Stop Start Thermo OFF re start Neutral zone 0 5 5 0 C Method of outlet temp detection In case of standard setting outlet setting temp 7 C neutral zone AT3 2 C change of outlet water temp 7 9 Range of stop temp AT1 1 C stop temp 6 C range of restart temp 2 C 1 Load up control at over 10 C The capacity is changed a lot in order to approximate the target temp quickly 2 Load up Il control at 9 10 C The capacity is changed moderately 3 In neutral zone 9 7 C load is balanced and performance is not changed 4 Under neutral zone below 7 C load down cont
65. Prevention Control for Suction Pressure Block Decrease Activation of Thermal Relay for Compressor 51C Activation of Discharge Gas Thermistor Td Activation of Compressor Thermostat 49C Activation of Evaporating Temperature Thermistor Tr Activation of Suction Gas Thermistor Ts Phase Abnormality Reverse Phase Phase Failure Individual power source spec Option Outlet Chilled Water Thermistor Abnormality in some cycles Activation of Freeze Protection Control Abnormality in some cycles Activation of Water Overheating Protection Control Abnormality in some cycles Evaporating Temperature Thermistor Abnormality Abnormality of discharge gas temperature Thermistor Liquid Temperature Thermistor Abnormality Abnormality of Outlet Water Temperature Thermistor for Protection Suction Gas Temperature Thermistor Abnormality Discharge Pressure Sensor Abnormality Suction Pressure Sensor Abnormality Abnormality of Setting Fan Number Phase Abnormality Reverse Phase Phase Failure Inlet Chilled Water Thermistor Abnormality Outlet Chilled Water Thermistor Abnormality in 1 cycle Activation of Freeze Protection Control Abnormality in 1 cycle Activation of Water Overheating Protection Control Abnormality in 1 cycle Ambient Temperature Thermistor Abnormality 52P Pump Interlock Signal Abnormality Operation Error Setting Error Error Communication between Ctrl PCB and Ex Valve PCB Error Communication between Ctrl PCB
66. RHUE210AG2 mimm 6 BIEIBINIBININ OFF 1 2 3 45 6 7 8 9 10 gy Y LO a RHUE240AG2 d 47 pag 85 SMGB0003 0 01 2007 Troubleshooting HITACHI Inspire the Next PCB RCUE40 400 AG2 RSW9 x lt RSW7 o 2 2 gt Cc MODEL DSW3 DSW4 12345678 9 10 on RCUE40AG2 2 z OFF e RCUE50AG2 1 23 45 6 7 8 9 10 gy Y RCUE60AG2 12345678 910 o 12345678 9 10 oy 7 OFF RCUE70AG2 OFF 0 12 345 6 7 8 9 10 04 2 Y OFF 1 23 45 6 7 8 9 10 gy Y OFF RCUE120AG2 12 3 45 6 7 8 9 10 gy RSW5 RSW5 ele 1 2 3 4 5 6 7 8 9 10 on RCUE140AG2 E RE Enn FF OFF 12 3 45 6 7 8 9 10 gy RCUE160AG2 2 RCUE180AC2 1 2 3 4 5 6 7 8 9 10 gy RCUE210AG2 1 2 3 45 6 78 9 10 gy OFF 151 den 1 2 3 45 6 7 8 9 10 0 Y RCUE240AG2 ql Y RCUE280AG2 123456789 10 gy 123456789 10g am m uuum RCUE320AG2 S on RCUE350AG2 12345678 9 10 1 2 3 45 6 78 9 10 gy E a Hu RCUE400AG2 SE SE 86 SMGBO0003 0 01 2007 Troubleshooting HITACHI Inspire the Next PCB RCUE280 400 AG2 2 2 gt Cc MODEL DSW3 DSW4 12345678 9 10 gy RCUE40AG2 L 4 RCUE50AG2 12345 6 7
67. Roughness Lock Status M easure insulation resistance Measure current of gt compressor motor Check freezing of water clogging of foreign particle Check the RC value and pump running current Push reset button Check the running current Check the difference of temperature between inlet and outlet of chilled water Water Strainer Clogging 3 Check rotative direction Open Air Vent Valve Check inlet temperature of chilled water HITACHI Inspire the Next Replace check valve Remove Clogging Replace or clean the strainer Replace discharge gas thermistor Replace fan motor Replace magnetic switch Replace fan motor Set voltage within working range during operation Measure the voltage in each interphase and ask Power Company for the advice Analyze the cause Replace power fuse Retighten the screw Replace contact points Replace compressor Replace over current Relay Remove them Change the RC value or replace magnetic contactor Replace magnetic contactor Increase water flow Clean the strainer Repair to correct direction Evacuate Air Replace Thermistor Troubleshooting The heat load is bigger than cooling capacity gt Gas leakage or shortage E 3 of refrigerant Expansion Valve p Clogging Strainer Clogging Low pressure is excessively low Low pressure Pipin p ping p Clogging Low pressure control is activated Ch
68. Semi Hermetic screw type 40ASC Z 2 150x2 SOASC Z 2 150x2 Continuous Capacity Control 15 100 Brazing Plate Type Multi Pass cross finned tube 8 0 38 8 8 R407C Factory charged Electronic expansion valve 2 92 JAPAN ENERGY FREOL UX300 Ester 2 82 Victaulic 2xInlet 2xOutlet Micro processor control 10 Option 5 15 15 46 1 0 High Pressure Switch Low Pressure Control High Pressure Relief Valve Discharge Gas Temperature Control Suction Gas Temperature Control Freeze Protection Control and Compressor Operation Hour Meter 3 N 380 415V 50Hz The nominal cooling capacities are based on the European Standard EN12055 Chilled Water Inlet Outlet Temperature 12 7 C Condenser Inlet Air Temperature 35 C page 13 SMGB0003 rev 0 01 2007 HITACHI Inspire the Next RCUE140AG2 356 119 6 2 98 2 430 1 900 5 250 3 420 60ASC Z 150x2 12 96 Product range and specifications MODEL Cooling Capacity Total Power input COP Height Outer Dimension Width Depth Cabinet colour Net weight Compressor type Models Quantity Oil heater Capacity control Water cooler type Condenser type Fan Motor pole Quantity Refrigerant type Flow control Number of independent circuits Quantity of refrigerant Cil type Water pipe connection Control system Chilled water outlet temperature Condenser air inlet temperat
69. Switch nen eus Setting water Operation mode CORTO setting conditioning temp Operation signal heat storage 1 Air conditioning Capacity control Air conditioning Rotary Switch Local remote Air conditioning Capacity control heat storage Segment Local remote 2 Air conditioning Capacity control External Thermo Air conditioning Rotary Switch Local remote Heat storage 100 0 External Thermo heat storage Segment External Thermo 3 Heat storage 100 0 External Thermo Air conditioning Rotary Switch External Thermo Heat storage 100 0 External Thermo heat storage Segment External Thermo pag 58 SMGB0003 rev 0 01 2007 Control system H ITACH Inspire the Next 1 Air conditioning operation 1 capacity control Air conditioning operation 2 capacity control The below example chilled water outlet temperature 7 C and chilled water outlet temperature 10 C in cooling Running operation Run Stop signal is received from local or remote a Dip Switch Setting It is not necessary Set it as factory default b Setting of air conditioning temperature 1 Set chilled water outlet temperature as 7 C Set chilled water outlet temperature as 7 C r RSW4 0 0 0 0 iE SN Sn Sex Sex A BE Sed BEC Ses ea O LO a 0 0 0 0 S sae RR s nU E MESE cas Oem ES 4E Current
70. by quality and quantity of dissolved chlorine and generally water with a greater value of electrical conductivity is not suitable since it has a lot of substance causing corrosion and lime Chloride ion Chloride ion has a important property regarding corrosion and corrosion is higher in water with big amount of chloride ion although pH value is free of corrosion Chloride ion does not have oxidise property however precious metal is penetrated if chloride ion combines with oxidant or dissolved oxygen Sulfate ion Sulfate ion is a cause of corrosion but it gives an indication for line formation If running water has a great amount of sulfate ion it will become rusty water pag 153 SMGB0003 rev 0 11 2006 Maintenance A caution In the beside data only chilled circulation water is defined however stable index of 6 7 should be kept in other cases pag 154 HITACHI Inspire the Next Acid consumption pH4 8 M alkali level It shows the volume of hydroxide carbonate and bicarbonate in water It is a base of saturation index calculation or prevention of corrosion rusty water and line formation All hardness calcium hardness The volume of calcium ion and magnesium ion in water is indicated with mg l corresponding to the calcium carbonate Hardness by calcium ion is called calcium hardness This is a cause of line trouble related with temperature pH and electrical conductivity lonic silica When metallic
71. corrosion products FE Zn etc increase in water silica produces compound products reacting with metallic corrosion products which helps that line is found easily Iron Iron exists in water as a bicarbonate a chloride a hydrosulfate a hydroxide iron bacterium and organoiron salt and is a cause of rusty water or line trouble Copper Copper is often melt from copper pipes Copper is a promoting factor of corrosion against iron pipes or galvanized steel pipe Sulfide ion It is a sulfide dissolved in water When pH is decreased sulfide is dissolved to produce H S which causes a heavy corrosion on many metal materials Ammonium ion When ammonium exist in water copper and ammonium react together to produce complex salt which leads to copper evolution and finally to the corrosion The volume of ammonium producing copper and complex salt is equivalent in NH H O When water pH value increases the volume of ammonium also increases and the danger to corrosive becomes higher Chlorine residual It is chlorine remained in the water which has been chlorinated and is a cause of corrosion of copper etc Free carbon dioxide It is carbon dioxide gas dissolved in water and is a cause of iron corrosion or action on concrete Ryzner Stability Index 51 It is a measure of the grade of water corrosion and line production It is calculated by the following formula RSI 9 3 A B C D x 2 E A Di
72. during the revolution A caution Do not use domestic detergent as a forming agent at System in Confirm individually if screws are fixed well using Parage general screwdriver or wrench check The followings are recommended Confirm if there is no gas leakage using foaming agent or leak tester especially in flanges screws and flare parts USA E Confirm visually if there is no oil leakage from suction pans and discharge flange Gas leakage detection device is not compatible with one for R22 The Fuse plug Confirm visually if fuse plug is not inflated abnormally sensibility of the device for R22 is little therefore do not ever Stop valve Confirm if the stop valve for refrigerant in outlet of air side for liquid heat exchanger is fully opened refrigerant Test run pag 21 Fuse Electrical device Compressor Fan motor Wire in the unit Local wiring Electrical expansion valve SMGB0003 rev 0 01 2007 HITACHI Inspire the Next Confirm visually if fuse is suitable See technical catalogue for detail regulation of fuse Confirm individually if screws in installation part and wire connection part are not loosed using driver Check it carefully since devices might be damaged if screws in wire connection part are not tightened well Confirm if the insulation resistance is more than 1MQ in 500V DC In case of below 1MQ do not operate the un
73. insert a automatic contactor like a snow relay in this switch part This switch can be used only at remote control Pay attention to it at Unit check Once the fan is started up by this switch fan continues running at least for 10 minutes if it is not stopped by the switch during this period In case of emergency stop the fan by the stop switch of unit This switch is locally purchased pag 68 SMGB0003 rev 0 01 2007 Control system H ITACH Inspire the Next 4 13 Switch for confirmation of high pressure cut Switch for confirmation of high eq pressure cut Switching to this test mode makes easy to confirm if the device for cutting high pressure is activated Operation method Switch for confirmation of high pressure cut 1 RE CNR 2 After unit is operated cooling in local EC operation mode press the switch DSW ae confirmation of high pressure cut PUSH and the fan corresponding to every Worm Water Temp Setting FUORI compressor is stopped forcedly And unit RSW4 S n rer ea e is stopped by
74. is operated normally and fan frequency is increased Fan computer has failure Replace it dy Yes Is voltage over 170V during running pag 140 SMGB0003 rev 0 01 2007 Troubleshooting 9 9 Analysis and countermeasure of abnormal running HITACHI Inspire the Next Chiller unit has various kinds of protection devices When the operation status is not correct due to the activation of some protection device refer to the table below and find out the main reason to apply a countermeasure One failure can affect other different conditions Thus do not check only 1 point but analyze it from overall viewpoint in detail Phenomenon Cause Power Failure Power is OFF Wiring Short Circuit Fuse for power Wiring Earth Fault source is melted Compressor Motor Failure Fan Motor Failure Wiring Short circuit Earth Fault in Operation Circuit Magnetic Contactor for Compressor Motor Failure Fuse for Magnetic Contactor operation for Fan Motor Failure ph i Magnetic Contactor Jes for pump motor Failure a Auxiliary Relay Coil Failure run when Solenoid Valve Coil Failure operate Printed Circuit Board Short Circuit Crankcase Heater Failure gt Trans Coil Failure gt Remote Control Wiring Incorrect R S T phase of power source is phase failure or reverse phase 05 alarm Remote Control Switch Failure Change over switch of Printed Circuit Board is Local 40 alarm Printed Wiring Connection Failure Circu
75. much water in refrigerant Water stain in water side heat exchanger Troubleshooting HITACHI Inspire the Next SS cr Alarm code Activation of Thermal Relay for Compressor 51 Alarm Stop Reason PCB Monitoring Position Operation current for any compressor No 1 Cycle PCB I O PCN207 is increased too much and activates the No 2 Cycle PCB PCB PCN207 a E No 3 Cycle PCB I O PCB PCN207 Chattering of external protection device No 4 Cycle PCB PCB PCN207 connected to the chiller eg flow switch No 5 Cycle PCB I O PCB PCN207 Yes activated immediately Is 220 240V the voltage Yes Is alarm activated just after between connectorPCN207 i ircui running PIN1 and connector PCN 207 e PIN3 on the Printed Circuit Board for Relay PCB PWB No Activate after a while No Wiring Check breaking of wire wrong wiring Is 220 240V the voltage ps Smet ein Soto Bale Haney Excessive or short power source voltage PCN207 PIN1 and connector PCN 207 PIN3 on the Printed Circuit Interphase of power source voltage is imbalanced Board for Relay PCB Compressor motor is locked Y E Insulation of compressor motor is lowered Power fuse for compressor motor is broken Power source terminal screw loosened Thermal relay for compressor failure Compressor slide valve malfunction Wiring check Flow Switch is Chattering
76. must comply with local codes For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter pag 44 SMGB0003 0 01 2007 HITACHI Inspire the Next 0082 941 v8 98 E KS 098 ER 59 668 o ru ae a ee an 941NO Jy lt yy8 gt _K y8 gt 1 1 r 1 r 1 1 7 i T 9 bs 7 9 ogc NED OS IN HN i has L J L J L L J L L J L J L 1 L J L J L J L J L J L J L J q A 44432 O A cde GN FN EN CN IN Ove Ive QC IWC C16 CIC CT a 53X08 1 b REA X08 3 WN 140 eae D ID SONO EZ X E Ion cono 9 9 9 o Qoo DAD Ne AS AS S Ar SES m a maa 12954 OL WW
77. outlet temperature Thermistor 1 Chilled water outlet temperature Thermistor 2 backside cooler Chilled water outlet temperature Thermistor 1 Chilled water outlet temperature Thermistor 2 backside cooler Chilled water outlet temperature Thermistor 1 Chilled water outlet temperature Thermistor 2 backside cooler Chilled water inlet temperature Thermistor SMGB0003 rev 0 01 2007 PCB PCB PCB D1 PCB C1 PCB D1 PCB C1 PCB D2 PCB C1 PCB D3 PCB C2 PCB D4 PCB C2 PCB D5 PCB HITACHI Inspire the Next Connector CN4 CN23 CN4 CN23 CN6 CN23 CN7 CN23 CN4 CN23 CN6 CN23 CN3 Troubleshooting HITACHI Inspire the Next gt K e Alarm code 5 Activation of Water Overheating Protection Control Alarm Stop Reason PCB Monitoring Position Water outlet temperature is above 59 C PCB CPU PCB during compressor operation only heating operation CN4 for No 1 cycle outlet control CN6 for No 2cycle outlet control PCB PCN12 wiring is broken PCB CPU PCB PCN12 14 14 1 cycle unit C 1 14 C5 14 more than 2 cycle units No Is connectors CN3 on the PI tl d Printed Circuit Board for Bren in Relay PCBD correctly repair wiring connected Yes Pull out connector and No measure thermistor Replace Thermistor resistance Is resi
78. pees ey SEE lt gt a 1 gt E KOLEL gt ciet A SIS Ip TESS roc 5 Y Nj 2222 SCAN E FDA DS 5 Y Y x ir Y 1 AAA O VAN E P Ds AS gt Hs HS Hs S Ls IM Emo diwo QNO DNO puces RARE ch ehe E E Ey RREN RAJS ZANT ov cP c c Mv M X6 2 ZN ZI ZS 73 8121 vigi KOLEL gt v 146 ish nd KZ YE 10 DM 35 90 D 135 20854 TE AY z Z ANN 4 Q Q lt gt 61 12 lt LLEL gt z eZ X E SON ON 4 00 NO AD ONO ditus wr COND AX Cz LOMO WM y a devo s AGO Qoo 00 990 DO NAO INIFINO amp OINO amp OIND 9144 ie lt 0 1 gt lt 0 1 gt lt 0 1 gt o Less E rm LIO lt 559 gt 6 ED MO Y AAA M 21 9 ZO oo jon E TET vas lt 9 1 gt 1l i lt ZOTE lt 955 gt lt 015 gt i 6075 n lt GEG gt lt 609 gt V lt gt 807 lt gt lt 805 gt lale i 19 7 cVizVs 18 o o o 3 V SEE e 6 6 2 AT tan avd d i 944 lt N3ddOo IN Drawing Code XEKS1040 r1 HITACHI Inspire the Next
79. pressure max MPa 1 0 Reverse Phase Protection Fuse and Thermal Relay for Compressor Internal Thermostat for Compressor Compressor Oil Heater Fuse and Internal Thermostat for Fan Motor Control Circuit Fuse Safety and protection devices High Pressure Switch Low Pressure Control High Pressure Relief Valve Discharge Gas Temperature Control Suction Gas Temperature Control Freeze Protection Control and Compressor Operation Hour Meter Power suply 3 7 N 380 415V 50Hz 2 NOTES 1 The nominal cooling capacities are based on the European Standard EN12055 Chilled Water Inlet Outlet Temperature 12 7 C Condenser Inlet Air Temperature 35 C 2 The nominal heating capacities are based on the European Standard EN12055 Heated Water Inlet Outlet Temperature 40 45 C Evaporator Inlet Air Temperature 6 C WB page 17 SMGB0003 rev 0 01 2007 Product range and specifications MODEL Cooling Capacity Heating Capacity Total Power input in cooling Total Power input in heating Height Width Depth Outer Dimension Cabinet colour Net weight Compressor type Models Quantity Oil heater Capacity control Water side heat exchanger Air side heat exchanger Fan Motor pole Quantity Refrigerant type Flow control Number of independent circuits Quantity of refrigerant Oil type Water pipe connection Control system Chilled water outlet temperature Heated water outlet temperature Cond
80. r1 x A r1 Y r1 2 a Y r1 Lr Lt DE l gt 0 m m A r nu Z ut a n n A n ut 0 n ut 2 ut dE LL nu Li l pag 109 Without indication With indication Check the power source Description of abnormality Activation of High Pressure Switch Excessively Low Pressure Activation of Low Pressure Protection Control Activation of Fan Motor Internal Thermostat Only for 70 80 140 160 210 240 280 320 350 and 400HP Activation of Thermal Relay for Compressor or Chattering alarm or Malfunction of Auxiliary Relay Arn Activation of Discharge Gas Thermostat Activation of Compressor Internal Thermostat Excess Low Temperature of Cooler Inlet Refrigerant Low Pressure Protection by Suction Gas Thermistor Phase Abnormally Only for 4 and 5 cycle unit Failure of Water Outlet Thermistor Only for 2 5 cycle unit Activation of Freeze Protection Control Only for 2 5 cycle unit Activation of Water Overheating Protection Control Failure of Cooler Inlet Refrigerant Thermistor Open Short Failure of Discharge Gas Thermistor Open Short Failure of Thermistor set before Expansion Valve Open Short Failure of Water Outlet Thremistor at Rear Side of Water Cooler Open Short Failure of Suct
81. remove the air inside the water pipe from the plug or automatic air removing valve Continue operating the pump and confirm if there is no water leakage strange noise nor abnormal vibration Remove the air from the pump and pass the water inside all the system Check if water is not leaked in all the system Confirm if the valve is open Confirm if strainer correspondent to 20 mesh prepared in local is installed in water inlet pipe near the unit When checking at the beginning of the season check also if there is any dust or foreign materials in strainer n case of short periods there is no problem if water temperature goes outside of service limits However chiller unit may be damaged working for more then 30 minutes out of standard specifications Service limit of water temperature is as follows Chilled water temperature outlet 10 option 5 15 C Warm water temperature outlet 35 55 C 2 2 Test run method and check 1 Need to apply electricity to oil heater Power ON 12 hours before the first start up 2 Screw compressor start up Confirm if there is no strange noise or abnormal vibration in 1 2 minutes after compressor operation 3 Confirmation of standard operating pressures Stop the operation once and re start the unit after more than 3 minutes Confirm if pressure is correct after 15 minutes of compressor operation referring for Fig 6 Standard operation pressure and Fig 6 Water s
82. segment indication y The last saved data before alarm occurrence is confirmed y Take proper measure according to the alarm position ores After the stop operation alarm indication is turned off and initial status 88 is displayed Abnormality code which was activated before can be seen by entering Indication Mode of Alarm Occurrence Data When the power turns off and turns on the indication on the display is initial status Abnormal code which was activated before can be seen by entering Indication Mode of Alarm Occurrence Data When the power turns off Main switch The Last Saved Data before Alarm Occurrence is cleared The Last Saved Data before Alarm Occurrence has only the last data before last alarm In case of before that only alarm code is saved pag 108 SMGBO0003 rev 0 01 2007 Unit does not run Troubleshooting HITACHI Inspire the Next 7 Segment indication shows the following abnormalities Check the 7 segment indication Alarm Code No 1 6 cycles Pu I rm m rm S L UK rm a m e A rm Ln Pu rm E 4 rm 4 Pu x m ma AA AA AA p AA ee p or AA ees AA L L m pm r1 21 M Di n n r1 n r1 n r1 i NM 11 11 NM 11 11 V r1 n a
83. should be controlled more strictly since water does not evaporate easily and it is difficult to know the degree of dew condensation It is desirable to control the vacuum grade as a 755 758 mmHg 5 2 Torr 0 y 760 Torr 60 ASA 700 160 600 pss EE COMM OR EI gt i _ T 660 100 p E 1 90 690 70 17 7o E a 20 7 i 755 5 760 0 Torr 20 1 40 50 60 70 6 10 2 Leave After finishing vacuuming manifold valve is closed and vacuum pump is stopped and then leave it for 1 hour to confirm if a pressure measured by vacuum gauge is not increased A caution 1 This process should be performed since air can be leaked due to the negative pressure although air leakage is not confirmed in air tight test 2 case of increasing pressure it is possible that there is a slight leakage in some positions Perform air tight test again and perform vacuum drying again after repaired pag 171 SMGB0003 rev 0 11 2006 Maintenance HITACHI Inspire the Next 6 11 Additional refrigerant insertion According to the refrigerant characteristics the followings should be taken into account A caution Refrigerant should be added in liquid state not in gas state Confirm if the tanks are specialised for R407C The tank should be set so that refrigerant can be added in ga
84. switch during this mode each second temperature of chilled water temperature and warm water temperature is set Second temperature set mode Press V switch on normal display on 7 segment more than seconds with Unit power ON Indication of the segment is changed to tS Cd and it is indicated alternatively with actual chilled water second temperature setting value With this status by pressing Aor V switch indication of the segment is changed to tS Hd and it is indicated alternatively with actual warm water second temperature setting value heat pump units And by pressing switch on indication PCB more than seconds we return to normal indication display El LE Ll LI 1 MA li SW3 A SW4 w gt 1 Lt LU In this case 6 In this case 48 C pag 62 SMGB0003 rev 0 01 2007 Control system H ITACH Inspire the Next Temperature setting method The following operation is performed from the status of chilled water second temperature setting value or warm water second temperature setting value Here the example of chilled water second temperature setting is shown Value is changed each time SW3 SW4 are pressed NOTE This value is not saved at this Press SW3 SW4 a moment simultaneously more Sett lue to b han se waited El sect sto CHECK ru 2 SEG1 _ SEG2 gt ES OO 5 0 1 gt pnt 2 1 SEG1 SEG2 SW3 sw4 N rere l l SW4 Press SW
85. temperature OFF A E ms Inlet water temp yl a z 2 m Outlet water temp Duce 22 mi Setting temp E 7 2 Thermo OFF temp z 6 lt dj 3 T Not immediate stop although reaching to Thermo OFF temperature Stop if the status under Thermo OFF temperature continues for 3 min vore However it becomes Thermo OFF immediately once outlet water temperature is decreased until protection values pag 75 SMGB0003 rev 0 01 2007 Control System H ITACH Inspire the Next 1 Cooling operation In this series fan speed is controlled by inverters and adjusts depending on discharge pressure Target high pressure is set based on the ambient temperature and revolution number is increased decreased by PID control The unit number is not changed Inverter output Max Frequency Max Frequency 66 Min Frequency 10 Silence priority mode Saving energy priority mode Target High pressure Mpa 15 Ambient temp C Fan control imaged figure High pressure Fan speed is increased when high pressure is almost below the target Fan frequency Start up at 10 Hz Target High pressure Fan speed is increased when high pressure is almost over the target Recalculation of fan speed is done every 10 sec Calculation is not performed when high pressure target value is within 0 1MPa following control is performed in case of sudden change pag 7
86. valve close may cause explosion due to the abnormal increase of high pressure Use only specified refrigerant Nitrogen gas should be used in air tight test The use of combustible gas like oxygen and acethylene may cause fire or explosion A WARNING ag Fig 10 not touch the switch with wet hand may cause electrical shock fig 10 not use any sprays such as insecticide lacquer hair spray or other flammable gases near the unit It may cause fire fig 11 not operate with cover of electrical box open To touch the electrical part may cause electrical shock Turn OFF all power source immediately in case that unit is not stopped in spite of the stop operation or that refrigerant is leaked or chilled water is discharged It may cause electrical shock fire and explosion Contact a distributor of Customer Service Centre of manufacturer in such case fig 12 Donot press repeatedly the operation switch It avoids a normal activation of protection device and may result in failure electrical shock and fire Turn OFF main power in case of safety devise is activated frequently or operation switch is not activated steadily There is a possibility of ground leakage or overcurrent and may result in electrical shock or fire Contact a distributor of Customer Service Centre of manufacturer in such case fig 12 Safe refrigerant Fluorocarbon incombustible non toxic and odourless is used In case that Fluoroc
87. water material should be made in SUS or certain water treatment should be performed Measures Suitable measurement should be taken in case of the leakage Control that these values be within the usage range once a day Maintenance A caution pag 157 HITACHI Inspire the Next 6 4 Cleaning of water side heat exchanger Plate heat exchanger is used in water side heat exchanger in this series Water passes through the clearance between plates in the plate heat exchanger therefore dust or foreign materials should not exist there See the below structure figure for your reference Strainer correspondent to 20 mesh should be installed in the inlet pipe of chilled water Strainer should be prepared in each case Line is produced based on the water quality and it is possible to decrease the performance or to break the plate due to the partial freezing caused by local clogging which leads to the refrigerant leakage Cleaning of strainer as well as water side heat exchanger should be performed periodically See the below cautions and normal cleaning method for your reference Contact the below detergent companies to the details Showa HQ Gifu 81 58 232 1131 Tokyo branch 81 3 3580 61 21 Osaka sales office 81 6 6391 2051 Futuro 81 3 92 434 4143 Water brine Water brine 1 Suitable cleaning agent for line should be selected According to the dirty cleaning agent differs 2 Plat
88. 055 lt gt ome 2 Bed 949 780 BBB ITI na O o m OES O voc 18 Si ops Li N ee LL 5 AO E LE gt C2 OO ES Com 2 C2 gt O C C NAA A O N asa 3 O M Ho O aS o CC co ATAR Ome lt N N en O O gt gt C2 am ocn Sn d COGS END gt LO jr 558 00 Drawing Code 7 XEKS1048 r1 NOTE All the field wiring equipment must comply with local codes For more information about DWS configuration please refer to chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter pag 43 SMGBO0003 rev O 01 2007 Electrical Wiring HITACHI Diagrams Inspire the Next
89. 1 oo KR C 6 p2 erm X umm LI Je 92 lt 71 gt NN S d lt 8 gt 9 SG 129 YJN 3 3 TL Wavy A INAL OWHL PINHI ONHI ONAH O j gt 1340 139 6139 era T syun saj99 lt JO olf lt 0921 gt lt 898 gt 79 ol h 3 440 NO O lt 6GC1 gt A 1329 98 lt 19 gt ZON L ON 56 viv lU L Ll c OL a9 9s 9 uri H For information about DWS configuration please refer chapter 4 of this catalogue See the diagram abbreviations description at the end of this chapter All the field wiring equipment must comply with local codes SMGBO0003 0 01 2007 2 38 Drawing Code XEKS1043 r1 Electrical Wiring HITACHI Diagrams Inspire the Next au m
90. 1 2007 Troubleshooting HITACHI Inspire the Next DIP SWITCH SETTING PCB FAN MODULE FOR DC FAN MOTORS e1 e5 Pin Address DC FAN MOTOR Mg 01 MFn1 CNO 3 05 MFn3 ONO MFn4 O n1 5 Cycle N Address setting 1 24CV DIP SWITCH SETTING EXP VALVE CONTROL PCB F1 F2 GE 2 9 So No function eL Economizer setting dissabled in HP mode Expansion valve reset OFF 50h ON 200h Setting temp tng 0 5 Setting temp 0 5 C vez pag 94 SMGB0003 0 01 2007 Troubleshooting DIP SWITCH SETTING Standard Setting Setting H LINK PCB N DSW4 DSW4 DSW4 123 4 PCB 000 0 PCB 1 PCB 001 0 pag 95 G1 G2 G3 H LINK DSW4 1 3 Manual stop of DC Fans same than DSW3 4 7 on PCBn N A All pins in OFF SMGB0003 rev 0 01 2007 FAN CONTROL PCB HITACHI Inspire the Next PONS PEN 1 PUNZ H LINK end Resistence Troubleshooting Protection device Activation value of protection device is as follows Name High pressure block device Cooling Prevention control for low pressure decrease Low pressure block device High pressure block device Heating Prevention control for low pressure decrease 40 HP 50 HP Excess curren
91. 2 LII E SW Jok _ RSW 7 10 min A ce sees epee aioe ele 9507 8 E Pap A EO et E 40A 40 HP frost by Ambient Te ent Limit Eos 1 X Itesettotot 0999899904 LII 1 Li X 90 HP RSW6 RSW5 60 HP i 150981 ane E S SW SWii SWI2 DSWe DSW eat 5OA 70 HP Adjust the calculated 80 HP setting value Ejemplo RCUE80AG2 Ejemplo RCUE40AG2 1 6 1 2 1 1 X e 40 48A RSW6 RSW5 2x SUA RSW6 RSW5 pag 54 SMGB0003 rev 0 01 2007 Control system H ITACH Inspire the Next Reverse protection control 4 5 Reverse protection control Screw compressor compresses the refrigerant to a determined pressure by decreasing the space formed by male female rotor and slide valve If the rotor revolution direction is reversed the suction side and discharge side are reversed and the functioning of the compressor will not be correct Therefore 3 phase input status is detected and operation is not performed in case of reverse phase or open phase o gt gt E as UNIT STATUS 4 OFF UNIT STATUS UNIT GOES pag 55 SMGB0003 rev 0 01 2007 Control System 4 6 Restart control Restart control after power failure after power failure HITACHI Inspire the Next 2 Momentary power failure Power failure of 13m seconds 2 seconds below 160V In case of a power failure of over 2 seconds it is possible
92. 2 8 Cle PBSR1 OFF 2 74Mpa PBSR2 ON Manual Reset RLn OLn CMP TRP N 1 n Symbol Or optional Circuit Breaker Or optional Circuit E Breaker 12A N 1 6A 2 3 4 5 SMGBO0003 0 01 2007 Name Remark Printed Circuit Board for Operation Printed Circuit Board for CPU Printed Circuit Board for Relay Printed Circuit Board for Fan Control PCB for Electronic Expansion Valve PCB for DC Fan control Water Pressure Switch Water Flow Switch Solenoid Valve for Economizer Option Pressure Switch for Economizer Cooler Heater Transformers 4 way valve External Swich Pilot Lamp for caution signal from Fans Push Button Switch for Starting REMOTE Push Button Switch for Stoppage REMOTE Pilot Lamp for Remote Indication Unit Operation Pilot Lamp for Remote Indication Alarm Contactor for Pump Field Supplied Thermal Relay for Pump Description Terminals Closed end Connector Field supplied Field Wiring Earth Wiring Factory wiring Model R C H UE 40 50 60 70 80AG2 RC H UE 100 120 140 160AG2 R C H UE 180 210 240AG2 RCUE 280 320AG2 RCUE 350 400AG2 Control system H ITACH Inspire the Next rms system d COO icio Tcr 49 At Geto Man Contool FUNCHON tata 50 zx WET COMM ON epi mmm 52 4 2 1 Automatic temperature MUSEE noraine nr ties a etn xe t an le qe Ux Ed xag Uu UR alit 52 49 Compressor Control sensei m EM 53 e t
93. 20 3 Victaulic 5xInlet 5xOutlet Micro processor control 10 Option 5 15 Reverse Phase Protection Fuse and Thermal Relay for Compressor Internal Thermostat for Compressor Compressor Oil Heater Fuse and Internal Thermostat for Fan Motor Control Circuit Fuse High Pressure Switch Low Pressure Control High Pressure Relief Valve Discharge Gas Temperature Control Suction Gas Temperature Control Freeze Protection Control and Compressor Operation Hour Meter 3 N 380 415V 50Hz The nominal cooling capacities are based on the European Standard EN12055 Chilled Water Inlet Outlet Temperature 12 7 C Condenser Inlet Air Temperature 35 C page 15 SMGB0003 rev 0 01 2007 Product range and H ITACHI specifications Inspire the Next 1 2 General data for RHUEA0 240AG2 MODEL RHUE40AG2 RHUES50AG2 RHUE60AG2 RHUE70AG2 Cooling Capacity kW 106 123 148 169 Heating Capacity kW 110 127 152 185 Total Power input in cooling kW 36 4 42 7 52 3 59 8 Total Power input in heating kW 40 7 44 5 54 3 67 7 Height mm 2 430 2 430 2 430 2 430 Outer Dimension Width mm 1 900 1 900 1 900 1 900 Depth mm 1 900 1 900 1 900 2 500 Cabinet colour Natural Grey Net weight Kg 1 550 1 600 1 670 1 880 Compressor type Semi Hermetic screw type Models 40ASC Z 40ASC Z 50ASC Z 60ASC Z Quantity 1 1 1 1 Oil heater W 150 Capacity control Control Water side heat exchanger Brazing plate type Air side heat exchanger Mu
94. 250 100 All hardness mgCaCO l 250 200 Calcium hardness mgCaCO I below 150 Quality inspection of circulation water 1 Before test run all criteria items in the table should be checked 2 he first week after test run pH and electrical conductivity should be measured In case of any trouble all items should be checked 3 One month after test run all items should be checked 4 After that water quality tendency should be captured in these 3 tests and afterward schedule should be decided by these results Even in the case of no trouble pH and electrical conductivity should be checked every month and all criteria items of water quality should be checked every half year Action in case of water quality trouble When the result of periodical inspection recognises some troubles in water quality those actions as similar to the following should be taken according to the situation 1 Replace old water to new one or perform forced blow once a week once a month 2 Water should be treated with anti corrosion agent or line inhibitor pag 155 SMGB0003 rev 0 11 2006 Maintenance Other maintenance item HITACHI Inspire the Next To maintain good water quality it is necessary to consider the installation place See the below for your reference Before installation Maintenance item 1 Installation place a Study if installation place is suitable Abnormal wastewater from boiler or refrig
95. 3 A 0 5 C tS Cd is indicated alternatively with actual Press SWA y 0 5 chilled water second temperature setting value and at this moment the value is saved Press SW3 SW4 simultaneously more than 3 sec SEG1 SEG2 CHECK IS LM lt _ lt L1 SW3 SW4 SEG1 Ili SEG2 E a In this case 12 5 pag 63 SMGB0003 rev 0 01 2007 Control System H ITACH Heat storage operation by 4 external order i Inspire the Next 4 10 Heat storage operation by external order Operation control It is a control that runs unit by External Thermostat order It forces unit to work at full load with no capacity control It is valid only at remote setting 2 Setting method a Dip Switch DSW1 on the PCB is set as follows before power ON PCBs 25 CNR ah Pressure Cut Conf pump operatio 0 1 2 549 eun exeo E Chilled Water Temperature Setting Worm Water RSWA volgo RSW2 RSW9 1 SW54 Current lime ost by Ambient Temp Current Limit Set OOO Maman u mha DSWS Continuous capacity contral DSWS anual Set DSW4 Compressor Delay Time yj n sh o DSW2 wl Dwe T 23 4 5 1 OFF St
96. 6 SMGBO0003 rev 0 01 2007 Control system H ITACH Inspire the Next Prevention of high pressure excess increase gt Discharge pressure 2 2 out put 10Hz gt Discharge pressure 2 5 MPa gt out put max frequency Prevention of high pressure excess decrease gt Discharge pressure x 0 9 MPa out put 10Hz gt Discharge pressure x 0 8 MPa out put min frequency 2 Heating operation Basically unit is operated with Max frequency but under the following conditions revolution number control is performed Prevention of low pressure excess increase Fan speed control is activated if suction pressure 0 6 MPa and ambient temperature 25 C Released at ambient temperature x 20 C pag 77 SMGBO0003 rev 0 01 2007 Control System 4 17 2 Electronic expansion valve Model of expansion valve Model MKV 1610D Q5 Refrigerant R407C Parts No C4340 ll E LE hA SE ara A pag 78 SMGB0003 rev 0 01 2007 2008 L f T 9 1 a 1 1 1 30 yes 2 o amp C amp amp ONO amp amp 6 HITACHI Inspire the Next Name Stem Guide Case Spring Pin Slider Under cover Bear ring Guide Body Copper union side Coil spring A Coil spring B Snap ring B Snap R
97. 98 gt 168 688 YY TT Q4INO lt v 985 Kcog Tor f U VEI LEA 9 LENO SNV4 90 como 9p S3X08 1 aod EN dA TESTE MG IN 3355 20GpJA X08 3 q IN F eggo SEAN X08 4 VN ny aaa TW 858 pe RERE TATE 940 iS A 90859 Censo ZONI Q iN ZONI E x EZ ESOO D 02 Q Q Era as TSF Q 9 IV TRT O Y ee SIS 9ev jN SEEN i 974 E S 984 lee SOELA R uid E eZ B LINO Y Y Ww j 23 ZNA e 8 4 67 17944 Jd v Vvjjd AA 016 t lt 01 gt j SEE 6085 SER 26075 756 8065 7575 807 v gt M V ava 939409 LI L L lt 19 19 Le le 140 Nu NW NW 9 a ND des dh Tr dh 139 TEE 2139 m viel ozi gee 1 gt PLN LEN pat ZTS LINO YLIN LLAN eo 30 lt 865 gt lt gt 289d SN 90 aoid SP 5 E NOEL gt gg lt gt 53 09 12809 leds lods lpas Izas 699 gm un VAN NN AN G4INO AObZ e 3 A lt 992 Kc99 O SN 4 ag 8 LING e e X081 RAD x HO SHA SHI H y j TE T1 A A 2999 ABBE antral eas diras
98. CUE80AG2 8E081072 RCUE60AG2 L Series Refrigeration Capacity Refrigerant 407C a Europe Cooling Unit Air condensed pag 7 SMGB00053 rev 0 10 2006 Contents Model RHUE40AG2 RHUES50AG2 RHUE60AG2 RHUE70AG2 RHUE80AG2 AIR TO WATER HEAT PUMP CHILLERS SCREW TYPE Indication code 9E041072 9E051072 9E061072 9E071072 9E081072 Model RHUE100AG2 RHUE120AG2 RHUE140AG2 RHUE160AG2 Indication code 9E101072 9E121072 9E141072 9E161072 Model RHUE180AG2 RHUE210AG2 RHUE240AG2 HITACHI Inspire the Next Indication code 9E181072 9E211072 9E241072 pag 8 ex FILIA Lt Series Capacity Europe Heat pump SMGBO0003 rev 0 10 2006 OR 407C Air condensed Contents Name CSC 5S PSC 5T Name PSC 5HR Name HARC70 CE1 HARC70 CE1 OP CSNET WEB pag 9 HITACHI Inspire the Next REMOTE CONTROL DEVICES LIST Description Indication Code Figure Central Station 60291050 Seven Day Timer 60291052 REMOTE CONTROL DEVICES ACCESSORIES LIST Description Indication Code Figure H Link Relay 60291105 CENTRALISED CONTROLS LIST Interfaces Description Indication Code Figure 60559055 Lonwork BMX Interface 60559056 IS 7E891924 SMGB0003 0 10 2006 Contents iH ITACHI Inspire the Next CENTRALISED CONTROLS Interfaces ACCESSORIES LIST Name Description Indication Code PMO001 CT200 7E891930 NEW Current Trans
99. HITACHI Inspire the Next AIR COOLED WATER CHILLERS COOLING ONLY AND HEAT PUMP gts Service Manual RCUE40AG2 400AG2 Cooling capacity 112 kW 1030 kW RHUE40AG2 240AG2 Cooling capacity 106 kW 585 kW Heating capacity 110 kW 556 kW HITACHI Inspire the Next Specifications in this manual are subject to change without notice in order that HITACHI may bring the latest innovations to their customers Whilst every effort is made to ensure that all specifications are correct printing errors are beyond Hitachi s control Hitachi cannot be held responsible for these errors Contents pag 3 HITACHI Inspire the Next O contents Product range and specifications Test run Electrical wiring diagrams Control system Troubleshooting Maintenance SMGB0003 rev 0 01 2007 On A O N Contents H ITACHI Inspire the Next 1 Product range and specifications 11 1 1 General data Tor RCUE40 400AG2 veian ii iii ico 12 1 2 General data for 40 240 2 16 NSU OI PPP o e O A 19 PEE CI do jori dii M 20 2 2 WESTIN method erm 22 o A In 25 2 4 Instruction at CUI Vesta 27 ZN VAN IMIG 28 28 3 Electrical Wiring 31 Sila Power LI
100. ITACHI Inspire the Next After a series of items are confirmed from the beginning to the end of test run restart the unit and check also the following items Items Operation Check point Voltage High pressure Low pressure operation register Ambient temperature DB WB Refrigerant system Chilled water inlet temperature Chilled water outlet temperature Activation temperature of chilled water temperature controller Activation temperature of warm water temperature controller air cooled type Frequency of compressor start up and stop Is there no abnormal vibration and contact in pipe or capillary cycle in general compressor Electrical system electrical device Frost in compressor Is electrical device relay etc activated normally Is activation time of timer normal Is there no trouble in discharge water pressure nor in operation noise Water system Pump Is there any clogging in strainer pag 25 SMGB0003 0 01 2007 Criteria and method Remarks Momentary voltage at compressor start up is over rated voltage 15 Unbalance of voltage makes current value change significantly Operation voltage is within rated voltage 10 Unbalance between voltage within 2 in any case within 3 See the diagrams in sub chapter 2 2 2 and 2 2 3 See figures 4 and 5 Confirm the activation temperature changing the setting temperature Below 6 times in a ho
101. O PCB CN28Pd PCB I O PCB CN28Pd Connect correctly Replace printed circuit board for Relay PCB Replace printed circuit board for Relay PCB Removing the clogging in the pipe Troubleshooting Alarm code Alarm Stop Reason Suction pressure sensor of compressor indicates abnormal No 2 Cycle PCBD2 No Cycle PCBD3 I O PCB CN29Ps value Is connector CN29Ps on the printed circuit board for relay PCB correctly connected Yes Is DC5V between connector CN29Ps PIN1 and PIN3 on the printed circuit board for relay PCB Yes Is less than DC 0 1V or more than DC 4 9V between connector CN29Ps PIN2 and PIN3 on the printed circuit board for relay PCBD when discharge gas pressure sensor is connected Yes Is discharge gas pressure sensor connecting pipe clogging Discharge pressure sensor abnormality pag 132 HITACHI Inspire the Next Suction Pressure Sensor Abnormality PCB Monitoring Position No 4 Cycle PCBD4 No 5 Cycle PCBD5 No OL No OO No Yes SMGBO0003 0 01 2007 No 1 Cycle PCBD1 I O PCB CN29Ps PCB CN29Ps PCB CN29Ps PCB CN29Ps Connect correctly Replace printed circuit board for Relay PCB Replace printed circuit board for Relay Removing the clogging in the pipe Troubleshooting HITACHI Inspire the Next Alarm code 77 27 Ambient Temperatur
102. PCB PCB CN25Ts No Cycle PCB I O PCB CN25Ts No 4 Cycle PCB PCB CN25Ts No 5 Cycle PCB I O PCB CN25Ts Is Printed Circuit Board for T Relay PCB connector tse CN25Ts correctly connected Yes Disconnect connector and No Replace Thermistor measure resistance Is the resistance correct Yes pag 130 Replace printed circuit board for Relay PCB SMGBO0003 0 01 2007 Troubleshooting EA RE Z I AE Alarm code Alarm Stop Reason Discharge pressure sensor of compressor indicates abnormal value Is connector CN28Pd on the printed circuit board for relay correctly connected Yes Is DC24V between connector CN28Pd PIN1 and PIN3 on the printed circuit board for relay Yes Is less than DC 0 1V or more than DC 4 9V between connector CN28Pd PIN2 and PIN3 on the printed circuit board for relay PCBD when discharge gas pressuresensor is connected Yes Is discharge gas pressure sensor connecting pipe clogging Discharge pressure sensor abnormality pag 131 No 2 0 No No Yes HITACHI Inspire the Next Discharge Pressure Sensor Abnormality PCB Monitoring Position No No No No No SMGB0003 rev 0 01 2007 1 Cycle 2 Cycle Cycle 4 Cycle 9 Cycle PCB I O PCB CN28Pd PCB I O PCB CN28Pd PCB I O PCB CN28Pd PCB I
103. Pa No Yes High pressure 22 4MPa No 6 min from defrost start No Fan operation start Confirmation of defrost finish conditions pag 73 SMGB0003 rev 0 01 2007 Control System H ITACH Inspire the Next Confirmation of defrost finish conditions Is fan running Fan 6Hz order output High pressure 22 6MPa Yes No No 10min since 6Hz order output Yes Start running with frequency High pressure lt 1 5MPa Yes No 10min since running with Max frequency Yes Changeover of 4 way valve 30 sec count Staring unload continued Release of defrost control pag 74 SMGBO0003 rev 0 01 2007 Control system H ITACH Inspire the Next 4 17 Thermo off selection function Thermo off selection function It is a function to prevent the Chiller unit from going Thermo OFF due to a sudden change of temperature or flow volume inverter water pumps It is possible to select it by DSWT pin on operation PCB Standard is set at delivery PCBc 1 Standard setting DSW7 1 2 3 4 ON OFF Inlet water temp 2 d BF Standard setting gt Outlet water temp o Setting temp 7 Thermo OFF temp 6 Immediate stop when reaching to Themo OFF temp 2 Setting to continue Thermo OFF temperature for a certain period DSW7 Setting to continue DEA Thermo OFF
104. R phase or S phase failure No Yes Check the power source switch y Yes gt Check power source switch m y T y Yes HITACHI Inspire the Next Replace fuse Wiring check and repair Wiring check Replace transformer Wiring check Connector check Replace transformer Wiring check Connector check Power Source Circuit Malfunction Replace Printed Circuit Board for CPU PCB Connector Repair Check Printed Circuit Board for Display and Operation PCB PCB Check Printed Circuit Board for CPU PCB Troubleshooting Alarm code a Alarm Stop Reason High pressure Pd is increased to more than 2 74MPa and high pressure switch 63H is activated Yes activated Is alarm activated just after running Yes Is high pressure switch 63H reset HITACHI Inspire the Next Activation of High Pressure Switch 63H PCB Monitoring Position No 1 Cycle PCB I O PCB PCN203 No 2 Cycle PCB I O PCB PCN203 No 3 Cycle PCB I O JPCN203 No 4 Cycle PCB I O PCB PCN203 No 5 Cycle PCB PCN203 No Reset the switch Yes Yes Is 220 240V the voltage between connector PCN203 PIN1 and connector PCN203 PIN3 Check Printed Circuit Board for Relay PCBD on the Printed Circuit Board for Relay PCBD Wiring check SEO SEHE error Yes PCB is Is alarm acti
105. Running thermostat is activated 2 A C amp H 5 alarm Compressor Bearing Failure Compressor Motor insulation Failure Compressor Motor Over current relay 3 Suction gas temperature is excessively high excessive superheat Discharge gas control is activated C alarm Discharge gas Thermistor Failure Fan motor bearing failure Single Phase Running Motor Insulation Deteriorated REM Failure Pump locked Pump over current relay is activated 5 alarm Pump Over current relay RC value Wrong gt Pump Over current relay Failure Shortage of water Flow Pump reverse rotated Freeze protection control is activated 1 alarm Air mixed Thermistor Failure alarm 1 alarm EM larm S oy a ta AO AO pag 143 SMGB0003 rev 0 01 2007 Check valve Air heat exchanger side Malfunction Expansion Valve Clogging 3 Strainer Clogging Check thermistor resistance gt Lock Status gt Check magnetic contactor Measure insulation resistance Power Voltage excessively bs high or low Power Voltage Phase Imbalance Discharge pressure is excessively high Power Fuse melted gt Loose Power Terminal Screw Contact point of compressor Motor magnetic Contactor 3
106. SEN 0c Se DC SEN E Current lime SW6 Swe QO Defrost by Ambient Temp Current Limit Set CIN ni Ini fd 0000000 2345678910 L234 50 78 9 10 2345678910 DSW5 Continuous copacity control DS WS Manual Set A DSW4 anual Set Compressor Delay Time Option B Option C Jie o o 6888 1 4 DA 1 DSW2 SW11 SW12 DSWO DSW7 Checking of current priority configuration 1 Power supply OFF Main Switch turned off 2 Put DSW1 1 from Operation PCB in ON PCB DSW1 annn 12 3 4 5 OFF Electric Box Power supply ON M I switch ON 4 Put DSW1 2 3 4 from Operation PCB in ON PCB jt AX X 0 1 or 2 pag 101 SMGB0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next 7 The right priority configuration follows the next table criteria 7 segments Setting for main control PCB PCB in all CHILLERS up to 240 HP Setting for main control PCB PCB 1 in Cooling Only CHILLERS with 4 or 5 cycles Setting for subsidiary control PCB 2 in Cooling Only CHILLERS with 4 or 5 cycles Modification of priority configuration Check previous table for the correct configuration 175 1 Modification of the priority number 7 segments X is the priority number of the PCB 0 1 or 2 according to the above table on mean i 2 Priority number is changeable only in U2 position it means tha
107. STE 32 3 2 Power VVIFING Diagram 1 snatateenndetecswanelaaaseactonehdusauetesceaedasceuessauedeeneeaneese 37 Ss ComtolPoOB 38 s IMpultOtiput POB ironia 40 3 5 Power Wiring Diagram MCB OPtiON cocooonnnccccccnnnccnncncncnoonnonononnononnnnrnnnonnncnnnonnnrnnnnnnnrnnnnnnrnnonnnnrnnnnnns 43 3 6 Diagram abbreviations descriptions 48 CONTO MEN UU T 49 4 1 List Of Main eeiam 50 d TONIO 52 Ao 9 5 CO 53 LU NEU anges M P 54 4 5 Reverse protection 55 4 6 Restart control after power failure 56 4 7 Operation error wrong setting prevention control 40 40 57 4 8 Forced capacity control e 57 4 9 Second water temperature 58 4 10 Heat storage operation by external 64 4 11 Operation by DC24V input Remote 65 4 12 Installation of switch for snow measure Fan manual operation
108. alarm since the pressure Alor Alor AS AE daa asino Oe SEGUE of high pressure side is increased which E makes high pressure cut device activated 0 0 0 0 8 E Blor Alar For Q Perform unit stop operation to release Seq eq O Oe E E t d fan f d st m LE ME uos alarm stop and fan forced stop Defrost by Ambient Temp Current Limit Set CIE DSWS Continuous capacity control DSWS Manual Sel A DSW4 anual Set B Compressor 7 elo tes T Swit eO To Stop Start all fans of each cycle follow the below table SF 1 PCBa1 SWO9 SW10 Cycle 1 3 Cycle 2 Cycle 3 3 3 2 PCBa2 SW9 SW10 Cycle 4 3 Cycle 5 4 14 Antifreeze control in winter It happens sometimes that chilled water temperature is decreased so much that heat exchanger of water side or piping system are frozen during operation stop in winter This control prevents Chiller unit from freezing by operating chilled and warm water circulation pump automatically after detecting ambient and chilled water temperature 1 Ambient temperature is below 2 C When ambient temperature is below 2 C operation order is sent to pump and continuos operation of chilled water circulation pump is started automatically When chilled water is over 15 C intermittent operation 5 min of operation and 55 min of stop is performed pag
109. although operation switch is ON while temperature controller is being activated This is not a failure but operation is started when temperature control Thermostat turns ON n screw type chiller unit there is a noise in the compressor rotors when it is stopped Refrigerant is flowed back temporally and this is not a failure 6 The refrigerant used in this unit is incombustible non toxic and odourless safe However toxic gas is produced when leaked refrigerant is exposed to fire and oxygen will be lacked due to that refrigerants gravity is higher than air Therefore in case that refrigerant is leaked or eye or throat are irritated stop the use of fire and ventilate well then contact a distributor 7 About operation method Standard method of use is described in the operation manual attached with the product Operation method would be changed if special modification were realized by request of the customers Give a clear explanation to the customers that it is necessary to contact a distributor or Customer Service Centre of manufactures in case that operation not described in the manual must be performed 8 For customers continued safety For customers safety give plain and sufficient explanation and instruction to them about the contents of Please observe safety precautions fully described in Installation Manual and For safety use described the Operation Manual and tell them to read them very carefully Cautions are
110. and Fan Speed control PCB Inverter Speed Control Abnormality Inverter Excess Current Protection Abnormality Inverter Position Detection Abnormality Transmission Abnormality between Inverter and CPU PCB or between Fan Speed Control PCB Voltage Shortage or Excess Voltage in Inverter During Activation of Pump Stop Control by Excess Increase of Water Temperature Water Shortage Protection Switch Activation at 63W use Option System Controller Connection Abnormality at CSC 5S connection Option Troubleshooting HITACHI Inspire the Next Indication of inverter fan module for control of fan revolution number Fan module has protection control and indicates abnormal code on the segment List of inverter abnormal code Segment Indication abnormal code iE Contents AE 4 Inverter Speed Control Abnormality Inverter Excess Current Protection Abnormality ww Cun a e o aa Luc al Inverter Position Detection Abnormality Lt Transmission Abnormality between Inverter and CPU PCB or between Fan Speed Control PCB Voltage Shortage or Excess Voltage in Inverter ww 0 11 an m gt a pal i m List of state at inverter retry Segment Indication Contents abnormal code ree n During retry control at simultaneous abnormal in some majority fans FUIL ZA
111. andard Option po 1 2 3 4 5 OFF External Thermo Control um b Connection to external Thermo Connection to Chiller unit is as follows Connect with terminal No 40 41 of TB3 within the electrical box Unit Wiring in local parts purchased in local Remove it in case remote controller switch is used Ox O E BER Stop ao eee normal BER Run 7 oy Applied power No heat storage source AV200V under 1A normal i t i Y heat O Heat storage normal storage changeover switch Heat storage normal Ex2 changeover switch Run order Run Stop order contactor Stop 2 poles ON OFF contactor by order contactor by purchased in local external Thermo external Thermo purchased in local purchased in local Terminal circuit In case of only heat storage operation wiring of part is not necessary pag 64 SMGB0003 rev 0 01 2007 Control system H ITACH Inspire the Next arren TION Dip Switch for this control should be set before power ON Local external Thermo does not run stop by pulse signal order Normal operation order a
112. ange Standard 5 5 C 10 6 C DSW 7 3 ON Thermo OFF is delayed after Outlet Temperature is below Thermo OFF setting for min DSW7 4 ON Used only in case of remote control through H LINK e g CSC 5S HARC pag 90 SMGBO0003 rev O 01 2007 Troubleshooting HITACHI Inspire the Next PCB RSW1 2 SW5 Setting Temperature in Cooling Mode with to digits and the sign indicated in SW5 PCB RSW1 2 amp SW5 No function In case of Brine 2 Option can be set negative temperatures 07 PCB RSW3 4 Setting Temperature in Heating Mode with to digits Only available in Heat Pump Models RHUEXXXAG2 PCB RSW3 4 No function SW5 RSWA PCB RSW5 6 7 CT Sensor function Supplied as standard PCB RSW5 6 7 No function Num X Model 1 X L_ Dll RSwe RSW5 3 50 100 5 60 120 180 Y LLLI X 6 70 140 210 280 350 RSW7 7 80 160 240 320 400 Compressor load is kept for period when CT sensor measures set current e g RCUE40AG2 Compressor load is down and hold for 30min Y 3 3 10min when compressor current is higher than 48 A X 2 1 2 40A PCB RSWS8 Temperature band for Neutral Zone See also DSW5 PCB RSW8 No function RSW8 Figure 0 1 2 3 4 5 6 7 8 9 Band degree 0 5 1 0 1 5 2 0 2 5 3 0 3 5 4 0 4 5 5 0 pag 91 SMGBO0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next PCB RSW9 Temperature setting for one Defrost co
113. arbon is leaked and touched with fire it would be a cause of toxic gas production and of lack of oxygen Contact a distributor of Customer Service Centre of manufacturer in such case fig 13 not put fingers or sticks etc into the air inlet and outlet These units have high speed rotating fans and it is dangerous that any object touches them Do not remove the protection net air inlet and outlet These units have high speed rotating fans and it is dangerous that any object touches them not touch hot temperature parts It may cause burn fig 14 Fig 14 pag 28 SMGBO0003 rev 0 01 2007 Test run H ITACHI Inspire the Next A WARNING Turn OFF all powers when checking electrical parts otherwise it may result in electrical shock not touch protection device It may result in failure electrical shock fire p Fig 12 and explosion if these devices are touched the setting value can be changed or short circuited Incase of troubles smell something burning etc stop the operation and turn OFF main power immediately Operation with abnormal state may cause failure electrical shock and fire Contact a distributor of Customer Service Centre of manufacturer in such case fig 12 Consult to a distributor of Customer Service Centre of manufacturer in case of repair and relocation Inadequate installation may cause electrical shock A caution not pour water inside the unit not m
114. by heat generation in pump during only pump running during compressor stop during heat operation Thermo OFF or during pump automatic operation in winter water temperature is decreased under 65 C due to pump stop it becomes normal status automatically Since this is not an abnormality of chiller unit it is not saved in alarm occurrence data No M Is connector on the Printed Circuit Board correctly connected Yes Pull out connector and No measure thermistor resistance Is resistance correct Yes No Replace Printed Circuit Board for CPU PCB Alarm code ru Alarm Stop Reason Thermistor for detection of compressor suction gas refrigerant Is setting of Dip Switch No correct Yes Check Printed Circuit Board for Operation PCB and Printed Circuit Board for Fan Speed Control PCBH and PCBJ 135 SMGB0003 rev 0 01 2007 PCB CPU PCB CN3 for inlet CN4 for outlet control in Unit 1 CN6 for outlet control in Unit 2 PCB I O PCB CN23Te2 for protection of Unit 1 PCB I O PCB CN23Te2 for protection of Unit 2 Plug correctly and repair wiring Replace Thermistor No problem as a product Ask users to check the installation Abnormality of Fan Number Setting PCB Monitoring Position No 1 Cycle PCB I O PCB CN25Ts No 2 Cycle PCB temperature indicates abnormal No 3 Cycle PCB value No 4 Cycle PCB No 5 Cycle PCB
115. cation Alarm data of the latest alarm occurrence is only saved Alarm data is cleared by Power OFF In case that data is not saved alarm occurrence data mode after flickering twice 4 To switch indication items Press A SW3 V SW4 5 Indication data is the same as the one of check mode However the next items are indicated as an additional pag 106 SMGBO0003 rev 0 01 2007 A 3 Swa4 Troubleshooting Example of code indication alternately flicker Item Refrigerant liquid ita Outlet water temp backside of heat exchanger of water side Felt HITACHI Inspire the Next Contents Outlet water temp backside of heat exchanger of water side C In case of No 1 outlet water temp is 7 C In case of No 2 outlet water temp is 7 C Fan control state EWE ole Eee as The following operation makes change from alarm data indication mode to normal mode 1 Press A SW3 SW4 more than sec 2 In case that un input state continues 30 seconds Indication of electron expansion valve opening case of 1 opening is 242 pulse In case of No 2 opening is 240 pulse The following operation makes change from alarm data indication mode to alarm occurrence data mode 1 Press SW4 more than sec Electron expansion valve opening indication By pressing O PSW1 on PCB for electron expansion valve more than seconds actual expansion
116. ce Note Do not connect LED or relay built in diode pag 65 SMGB0003 rev 0 01 2007 Control System b Setting method HITACHI Inspire the Next Dip Switch for optional function setting on PCB is set as follows before power ON Option arren TION DSW1 gt Option Additional wiring should not be connected to other operation circuit especially wiring for 220 240V Additional wiring shall be put into a metal pipe independently or shield line shall be used 3 Pulse input 1 a Signal and basic sequence Arrangement in local Terminal gt Run Stop switch repared in local lt b Setting method Relay coil etc for DC24V prepared in local Relay coil has electricity at alarm occurrence Note Do not connect LED or relay built in diode Over 200 m Over 3 min Over 200 m NN Operation ansia oa Switch ON switch OFF Dip Switch for optional function setting on PCBB is set as follows before power ON ON arren TION 5 OFF DSW1 gt Option Thai 2 3 4 5 OFF DSW1 Additional wiring should not be connected to other operation circuit especially wiring for 220 240V Additional wiring shall be put into a metal pipe independently or shield line shall be used pag 66 SMGB0003 rev 0 01 2007 HITACHI Contro
117. ch set normal Yes Check fuse PCB Monitoring Position FANM Fan Module Retry Code No 1 Cycle No 2 Cycle No 3 Cycle No 4 Cycle No 5 Cycle No gt F1 P8 F2 P8 F3 P8 F4 P8 F5 P8 Set Dip Switch correctly HITACHI Inspire the Next Transmission Abnormality between Inverter and CPU PCB or between Fan Speed Control PCB Set normal Plug correctly and repair wiring Troubleshooting HITACHI Inspire the Next to Z EL Alarm code 21721 Voltage Shortage or Excess Voltage in Inverter fe 1m m Fan No Alarm Stop Reason PCB Monitoring Position Inverter DC voltage is under or over the setting FANM Fan Module voltage level Alarm stop 3 retries during 30 Retry Code minutes compressor stop automatic restart in No 1 Cycle F1 P8 3minutes No 2 Cycle F2 P8 No 3 Cycle F3 P8 No 4 Cycle F4 P8 Re operate No 5 Cycle F5 P8 gt Yes Is power supply voltage o Check and investigate under 200 10 the wiring system and wiring volume Yes Is voltage down by operating some operating devices Is LED201 of fan computer How is the running Fan is operated but lightning gt status of fan at re stopped immediately operation Fan is operated with low frequency and stopped by increasing the frequency Is fan computer connected correctly Connect it correctly Yes Does fuse have electricity v Replace fuse Fan
118. ch A DSW3 1 2 3 Enable of compressor No 1 2 3 PCB DSW3 1 2 Enable of compressor No 4 5 PCB DSWS3 4 5 6 7 Enable of DC Fan Motor No 11 12 13 14 Cycle 1 PCB DSWS3 4 5 6 7 Enable of DC Fan Motor No 41 42 43 44 Cycle 4 DSW3 8 9 10 H LINK ADDRESS 000 by deffault on PCB Use same address in PCB DSW4 1 2 3 DSW3 8 9 10 H LINK ADDRESS 001 by deffault PCB Use same address in PCB DSW4 1 2 3 61 TP pag 88 SMGBO0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next PCB DSW4 Optional Function A PCB DSW4 No function except DSW4 7 in ON HAPE CHILLER DSW4 1 OFF for RCUEXXXAG2 models ON for RHUEXXXAG2 models DSWA 2 7 ON DSW4 3 4 5 6 8 OFF Configuration for HAPE Chillers DSW4 3 ON Not Available Option DSWA 4 ON Enable of Brine Option DSWA 9 10 Compressor Model Figure 9 10 9 10 9 10 9 10 Location OFF ON ON OFF ON OFF OFF Compressor 40 HP 40 HP 50 HP 60 HP Time minute 40 HP 50 HP 60 HP 70 80 HP PCB DSWS Continuous Capacity Control PCB No function DSW5 1 2 Temperature band for Thermo OFF Figure 1 2 1 2 1 2 Location ON ON OFF ON OFF OFF Band degree 0 5 1 5 2 0 DSW5 3 4 Temperature band for Compressor re start Figure 3 4 3 4 3 4 3 4 Location ON ON ON OFFI OFF ON OFF OFF Band degree 1 0 2 0 3 0 4 0 DSWS5 5 Temperature band for LOAD UP2 This chart is based on a Temp Setting of 7 C Figure 5
119. d N gt U 404 oc ey MEL 605 e gt De LILO x jo XA omo 89 27675 cits ri pP 00 9 BE 167 ON VV vv IZS 5065 AIA AIA IA JAJA AA NAN ALA De E II ETS 58 88 MERI EC E BE MS SS SIS 5 SM Me N X Eum IT Les Wet ie eis za de is 2 L 1S8 LZZNOd _ 61004 8 1ZN9d 104 BONO SIZNOd Y LCNOd LONG 8 9130 MSS x D SJ IIT E 2 oo 3 i i 3 i 3 TS lt 061 gt bag SYA ele CN LO S S ttl H H Hp lt 68T gt 2 5 5 5 12 EP S go Lc So S 5 alas Sh OOO OHO AD SP ASA S900 J goz 1 SONO SONO ONO CPHOd m 1488909099 8 SES gt H Geo Geo e e 3 B Qu 3 P8Dd Y qus Sho 258 7 2 eee 2 OW lt gt lt gt E syun sajoXo 5 OE T DAS c lt gt 0061 Tasa X Es SB T gt S m IIVLJO J Spears P 79 vl VI V Es 52 Qvo ANH E CNPT oi 80 g O ES 080 AJA N rs BE q Q INS 4 Ne of zl JR 22 gt dans ane d es
120. d Printed Circuit Board repair wiring correctly connected Yes Pull out connector and No measure thermistor Replace Thermistor resistance Is resistance correct Check water flow rate Check the Yes Yes temperature of Inlet and Outlet Check pump reverse rotation Check water strainer clogging Check printed circuit Check air mixing board for CPU PCB Check Chilled water thermostat setting value It shall be within the working range 2 inlet temperature Themistor is installed in each unit Two outlet temperature Thermistors are installed in every heat exchanger in water side The below table shows the relation between Thermistor and alarm indication as well as connecting Printed Circuit Board PCB pag 122 SMGBO0003 0 01 2007 Troubleshooting Abnormal Product Model RCUE 40 80 AG2 RHUE 40 80AG2 RCUE 80 400 AG2 RHUE 80 240 AG2 RCUE 40 400 AG2 RHUE 40 240 AG2 pag 123 14 04 Code Lui Lui XY IY m XY Thermistor Chilled water outlet temperature Thermistor 1 Chilled water outlet temperature Thermistor 2 backside cooler Chilled water outlet temperature Thermistor 1 Chilled water outlet temperature Thermistor 2 backside cooler Chilled water outlet temperature Thermistor 1 Chilled water outlet temperature Thermistor 2 backside cooler Chilled water
121. d heating water Pipe of chilled heating water Check of screws and bolts etc Re tightening of electrical wiring terminal Leakage of water pipe Dirtiness of air side heat exchanger Clogging of drain pump Cleaning of inside outside of machine room Compressor Air side heat exchanger Water side heat exchanger Expansion valve 4 way valve only cooled heat pump Solenoid valve Stop valve Strainer Pipe capillary tube High pressure block switch Cleaning of inside outside of unit Interphase voltage of compressor Vibration and noise Operation adjustment and automatic operation mechanism High pressure block switch Indication light 4 way valve only cooled heat pump Solenoid valve Instruction on operation method Inlet temperature of chilled heating water Outlet temperature of chilled heating water Inlet DB WB temperature of air side heat exchanger Water flow of water side heat exchanger High pressure Low pressure Operation voltage Operation current 6 6 Caution on handling of RA07C Check contents Remove the obstacle Check them while pouring water Re tighten those which are loosed Re tighten all by driver Confirm it while pouring water Clean it by pouring hot 40 C water Confirm it while pouring water Check valves flare parts welding parts etc More than 180V Check compressor fan pipe etc Check the activation of ON OFF temperature adjustment Check the activation value and setting value
122. d before is also put to the tank for wastewater collection While confirming with pH test paper neutralization agent is added gradually to neutralise the tank Neutralised wastewater should be treated by industrial waste disposal contractor In case that wastewater is diluted by much abundant of water and drained to public sewer consult with a cleaning agent company in advance Step 5 Neutrization treatment Water is put in the tank for cleaning Acid proof pump is operated while air is pulled out While confirming with pH test paper neutralization agent is added gradually so that pH value be 7 9 After pump is operated for prescribed time neutrization treatment is finished After finishing neutrization treatment neutrization liquid is drained to public sewer Circulation pump is operated and circulation system is washed sufficiently until dirty liquid is totally out Step 6 Re start operation Water pipe is installed as before the cleaning After cleaning water treatment is performed to prevent the corrosion occurred at operation start pag 159 SMGB0003 rev 0 11 2006 Maintenance 6 5 Check items in daily operation ON Cc N 0 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 HITACHI Inspire the Next Check items Check of around of chiller unit Pressure quantity and quality of chille
123. divided into Alarm and Caution Alarm includes cases where it is possible to lead to a dangerous result like death or severe injury Cases described in Caution may also lead a grave result depending on the situations Therefore please read them carefully and follow the instruction Operation Manual should be kept where any user can reach pag 27 SMGB0003 rev 0 01 2007 Test run H ITACHI Inspire the Next 2 5 Warning amp Cautions A WARNIN y Installation must be performed by distributors or specialists Inadequate installation may cause water leakage electrical shock or fire Electrical work must be performed by person with qualification Inadequate electrical work may cause electrical shock Confirm if earth wire is connected Earth wire is determined according to the technical criteria of electrical installation not use wire or copper wire in stead of a fuse inside the unit or in the switch for power source It may cause heat or fire in case of abnormal current Confirm if fuse is correct and adequate In case of setting inadequate fuse like high volume fuse fuse would not melt in spite of abnormal current and cause fire See installation check manual attached with the unit for correct fuse volume Confirm the open close state of valves according to label or operation manual Especially confirm if inlet valve is open in those products that have inlet valve of condenser Operation with the
124. dterm period Little fan noise mode pag 70 SMGBO0003 rev 0 01 2007 DSW2 1 It is possible to select 3 types of fan control depending on the installation place or use PCBb Control system H ITACH Inspire the Next Silence priority mode is valid by a no voltage contactor input in Dip Switch setting of Standard mode or Saving energy priority mode therefore such changeover as saving energy mode in daytime and silence priority mode at night can be performed from remote controller High pressure Mpa PCBc PCN6 Silence priority 4 ON OFF Silence priority mode night shift Saving energy priority mode High COP effect by reduction of high pressure about 10 Silence effect by reduction of fan revolution number about 2dB Noise same as at high ambient temp COP same as at high ambient temp Standard mode Ambient temp C wore The above figure is an image and the real effect differs from temperature condition pag 1 SMGBO0003 rev 0 01 2007 Control System H ITACH Inspire the Next Defrost only air cooled heat pump type 4 16 Defrost only air cooled heat pump type Ambient temperature evaporating temperature and evaporating pressure are detected during heat operation to detect the frost volume By the changeover of 4 way valve reverse cycle defrostin
125. due to an NO Abnormal occurrence in fan Is it judged that it is possible to continue operation although fan is stopped temporally NO accidental factor Stop the correspondent fan Stop the compressor of Count retry times correspondent cycle Count retry times Retry control by the same abnormal reason is performed specified times within specified period Retry control by the same abnormal reason is performed specified times within specified period YES NO abnormal bi fan per 1 cycle Retry code is indicated And are all fan manual set SW ON Compressor is re started in 3 min Correspondent fan is stopped REMOTE OUTPUT ALARM terminals 54 55 No indication of alarm code fan under stop by abnormal function is indicated in check mode Alarm stop compressor of correspondent cycle is stopped indication of alarm code Operation continues Stop the compressor of correspondent cycle Count retry times NO Fan restart by itself no indication of retry code fan under retry is indicated in check mode correspondent fan is re started in 10 sec Cycle retry indication of retry code compressor is re started in 3 min Abnormal indication of Option Remote Controller Switch Indication lamp of remote controller side distinguish
126. e CON A E Charge correct quantity Discharge pressure charge i of refrigerant is excessively T Unit Spe high so that high Non condensable gas in gt Rd Charge refrigerant again during pressure switch the refrigerant cycle after the evacuation cooling activates temperature and pressure C1 H1 C6 H6 High pressure pipe gt clogging Check clogging Expansion Valve gt clogging Check clogging Check Valve Air RS Remove clogging or heat exchanger side replace check valve clogging Check the difference of Strainer Clogging temperature before and after of strainer Replace or clean the strainer Chilled water inlet temperature of Water y Confirm if it is within the working p side heat exchanger is range excessively high Check the status of heat load in detail and take a countermeasure Suction gas temperature is excessively high Excessively super heat Charge correct quantity of refrigerant after checking gas leakage Discharge gas control is activated Gas leakage or refrigerant shortage pag 142 SMGBO0003 0 01 2007 Troubleshooting Unit stops during cooling operation Thermal relay for compressor is activated E 5 alarm 25 56 alarm Compressor Drive Excessive Current Compressor internal thermostat is activated c 1 7 alarm C 1 alarm Single Phase Fan internal
127. e C7 Na Inverter Speed Control Abnormality a 1mm FanNo Alarm Stop Reason PCB Monitoring Position The actual frequency is over the admissible value FANM Fan Module of inverter order frequency Alarm stop 5 retries during 30 minutes only corresponding fan is stopped automatic restart in 10 seconds Retry Code No code indication indicated within the check mode wore See Inverter position detection abnormality in the next page for flowchart sf pa aer Inverter Ex rrent Pr ion EU gi g erter Excess Current Protectio ZD No Abnormality Alarm Stop Reason PCB Monitoring Position 1 DC electricity value of inverter is over the FANM Fan Module admissible value 2 Inverter temperature is increased over the limit 3 Error signal is detected Alarm stop 5 retries during 30 minutes only corresponding fan is stopped automatic restart in 10 seconds Retry Code No code indication indicated within the check mode wore See Inverter position detection abnormality in the next page for flowchart pag 137 SMGBO0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next BZ m m m m Alarm code e PA Inverter Position Detection Abnormality 1m m Fan No Alarm Stop Reason PCB Monitoring Position The actual cycle is over the admissible value FANM Fan Module calculated by inverter order frequency Alarm sto
128. e Thermistor Abnormality PCB Monitoring Position PCB CPU PCB CN5 Alarm Stop Reason Thermistor for ambient temperature indicates abnormal value Is connector CN5 on the No Printed Circuit Board for Plug Wiring Repair CPU PCBc correctly connected Yes Pull out connector and No Replace Thermistor measure thermistor resistance Is resistance correct Yes Replace Printed Circuit Board for CPU PCB 5 Alarm code EL EL Error Communication between Ctrl PCB and Ex Valve PCB Alarm Stop Reason PCB Monitoring Position Communication between Ctrl PCB PCB CPU PCB PCB VD board VCN13 and Ex Valve PCB is not performed correctly during 30 seconds Is connector CN13 on the No Printed Circuit Board for yang CPU PCBC correctly repair wiring connected Yes Is connector VCN13 No on the Printed Circuit Plug correctly and Board for Ex valve repair wiring control PCBG correctly connected Yes Check the Printed Circuit Abnormal Replace the Printed Board for Ex valve control Circuit Board for PCBG Ex Valve control PCBG Normal Replace the Printed Circuit Board for CPU PCBC pag 133 SMGB0003 rev 0 01 2007 Troubleshooting Alarm code FL FL Alarm Stop Reason Communication between Ctrl PCB PCBc and fan speed PCB is not performed correctly during 30 seconds Is setting of Dip Switch No HITACHI Inspire the Next Error Communication between Ctrl PCB and
129. e controller in spite of local operation mode However alarm is not indicated if there is a local input operation switch of unit body while the unit is stopped in remote operation mode 2 Local Remote operation error To switch local remote or remote local while the unit is running unit is stopped and alarm is output 40 40 3 Cooling Heating operation error To operate heating during cooling or to operation in cooling during heating unit is stopped and alarm is output 40 40 4 Wrong setting of Dip Switch Dip Switch is set wrongly alarm is indicated at power ON Forced capacity control 4 8 Forced capacity control This is a control to do Thermo OFF forcedly or to be shifted to the desired capacity by a external control Since it is possible to change the operation capacity forcedly according to the load it is very useful if it is needed to control the temperature by a external signal 1 Forced Thermo OFF function ore a Contents This Gonos individual In case that it is required to stop a compressor temporally the order can be for each compressor given forcedly through the customer wiring terminals After receiving this signal compressor shall be Thermo OFF forcedly When this order is released normal operation is performed Automatic operation Thermo OFF Automatic operation by Thermo by Thermo 4 9 A gt gt Unit Running operation Ext xterna signal OFF b Wi
130. e heat exchanger is made by stainless Copper material is used in the connection of plate Therefore do not use a cleaning agent with chlorine and fluoride If it were used heat exchanger should be damaged which may cause the refrigerant leakage 3 After water discharge wash the inside with water and then water treatment should be performed in order to prevent the corrosion rusty water or re production of line 4 Density of cleaning agent cleaning time or temperature should be adjusted according to the line 5 After oxygen cleaning neutralization treatment should be performed Disposal of waste water in neutralization treatment should be asked to the specialised company 6 Cleaning agent or neutralization agent is corrosive or irritating to the body skin eye etc Therefore when cleaning put the protection materials protection glasses protection grove protection boots etc on SMGB0003 rev 0 11 2006 2 Maintenance Name Chiller unit Water inlet acid proof pump hose Cleaning solution Water outlet Circulation tank tank for cleaning Tank for waste water collection a Step 1 Step 2 a Step 3 pag 158 HITACHI Inspire the Next Cleaning whole system using the existing pump and cleaning only water circuit of chiller unit single body cleaning are the popular cleaning methods Here it is explained how to do concretely in simple b
131. e magnetic contactor and fuse Replace auxiliary relay and fuse Replace solenoid coil and fuse Remove the particle and replace fuse Replace oil heater and fuse Replace transformer Change wiring 3 Change to the correct phase Replace remote control switch Turn changeover switch on Remote gt Repair the wiring connection Replace the Printed Circuit Board P Replace magnetic contactor for pump gt Remove it Change the RC value or replace magnetic contactor Replace magnetic contactor Troubleshooting HITACHI Inspire the Next EU Repair the wiring W C tion Fail Check t by test iring Connection Failure eck circuit by tester Printed Circuit pp Board Failure Check circuit by tester Check Printed Circuit Board Replace Printed Circuit P Printed Circuit Board self Y checking function but neither Repl t trol tannar Remote Control Switch Failure gt Operative by the unit side d A iu compressor switch lai Coil Broken Check circuit by tester Fan Magnetic Measure the voltage between Replace magnetic Cooling Operation Contact Point Failure contact points of magnetic gt Sensor contactor Pump and M the interph EIS _ gt Fan Motor Failure gt CUL aoe gt Replace fan motor run but fan resistance does not run Wiring Connect
132. e piping Stop Valve malfunction Shortage of Water Pump reverse rotation Air mixed Clogging of Strainer Too much water in refrigerant Water stain in water side heat exchanger SMGB0003 rev 0 01 2007 Troubleshooting Alarm code Alarm Stop Reason HITACHI Inspire the Next ne Activation of suction pressure protection control PCB Monitoring Position Suction pressure Ps is less than 0 333MPa during 90 seconds Electronic control air cooled type Suction pressure Ps is less than 0 314MPa during 90 seconds Electronic control air cooled heat pump type only cooling operation Alarm stop 3 retries during 30 minutes Compressor stop automatic restart in 3 minutes Retry Code No No No No No 1 Cycle 2 Cycle Cycle 4 Cycle 5 Cycle C1 P6 C2 P6 C3 P6 C4 P6 C5 P6 Is connector CN 29Ps on the Printed Circuit Board for Relay PCB correctly connected N Wiring Check O pag 114 SMGBO0003 0 01 2007 No No No No No 1 Cycle 2 Cycle Cycle 4 Cycle 5 Cycle PCB I O PCB CN29Ps PCB I O PCB CN29Ps PCB I O PCB CN29Ps PCB I O PCB CN29Ps PCB I O PCB CN29Ps Shortage of Refrigerant Gas Leakager Clogging of expansion valve Clogging of low pressure side piping Stop Valve malfunction Shortage of Water Pump reverse rotation Air mixed Clogging of Strainer Too
133. eck Valve Malfunction gt Shortage of water flow Pump Reverse Rotation Air Mixed gt Deposits water cooler plates p Check the scales inside of water cooler 3J Unit is running but the Air flow shortage in air capacity is side heat exchanger insufficient gt gt Air temperature through gt air side heat exchanger High pressure is excessively high is high gt High pressure switch is Refrigerant Excessive activated gt charge eee IS ena alarm Non condensable Gas in the Refrigerant Cycle High P i ig 188508 3 Clogging Expansion Valve Clogging Strainer Clogging Check valve mal function Compressor Failure p Propeller fan contacts with shroud Installation error or loose bolt Liquid Compression gt Unit is running anu Noise from compressor Oil hammer gt noise No current to oil heater at compressor stopping Worn or damaged part in p the compressor Beats of magnetic contactor Vibration of cabinet pag 144 SMGBO0003 0 01 2007 HITACHI Inspire the Next Calculate heat load Replace to larger unit Charge correct quantity after Check super heat 9 5 y checking gas leakage Check clogging Remove clogging Check to make sure that no difference of temperature before and after of the gt strainer exists Replace strainer Check to make sure that no difference Remove cl
134. emote Is changeover to local side p itis ineunt thal during remote operation operation changeover to local side during remote Yes Local No operation Do not perform it Is 220 240V between NO PIN1 PIN3 of connector Wiring Check between PCN16 on the printed 3 remote control switch and circuit board for CPU printed circuit board Is local operation Yes Check Printed Circuit Yes Board for Relay PCB Y Normal es Is optional p Is the signal transmitted Running It is incorrect that remote connected from option device gt operation signal is transmitted from option device during local operation Do not perform it No No Wiring Check between external device and printing board Yes Normal Is it changed over to Running m remote side during local gt pd operation that changeover to Remote Side during Local Operation No Do not perform it Check printed circuit board for display PCB Check printed circuit board for operation Check printed circuit board for CPU PCB pag 125 SMGBO0003 rev 0 01 2007 HITACHI Troubleshooting Inspire the Next Alarm code ES Inlet Chilled Water Thermistor Abnormality PCB Monitoring Position Alarm Stop Reason CPU PCB CN3 Thermistor for inlet water temperature indicates abnormal value Is Printed Circuit Board for iue Plua Wirina Repair Control PCB connector meh UU UU
135. enser air inlet temperature Evaporator air inlet temperature Permissible water pressure max Safety and protection devices Power suply 7 NOTES kW kW kW kW mm mm mm Kg Inch C C C C MPa HITACHI Inspire the Next RHUE160AG2 RHUE180AG2 RHUE210AG2 RHUE240AG2 390 444 507 585 371 457 556 556 139 1 156 8 179 4 208 7 135 5 162 9 203 2 203 2 2 430 2 430 2 430 2 430 1 900 1 900 1 900 1 900 5 000 5 700 7 500 7 500 Natural Grey 3 780 4 780 5 440 5 650 Semi Hermetic screw type 60ASC Z 50ASC Z 60ASC Z 60ASC Z 2 3 3 3 150x2 150x3 Continuous Capacity Control 15 100 Brazing plate type Multi Pass cross finned tube 0 38 8 12 12 18 18 R407C Factory charged Electronic expansion valve 2 3 3 3 128 123 144 192 JAPAN ENERGY FREOL UX300 Ester 3 Victaulic 2xlnlet 3 Victaulic 3xInlet 3xOutlet 2xOutlet Micro processor control 10 Option 5 15 35 55 15 46 for cooling operation DB 9 5 21 WB 10 15 5 for heating operation 1 0 Reverse Phase Protection Fuse and Thermal Relay for Compressor Internal Thermostat for Compressor Compressor Oil Heater Fuse and Internal Thermostat for Fan Motor Control Circuit Fuse High Pressure Switch Low Pressure Control High Pressure Relief Valve Discharge Gas Temperature Control Suction Gas Temperature Control Freeze Protection Control and Compressor Operation Hour Meter 3 N 380 415V 50Hz 1 The nominal cooling capacities are based on
136. er itself valve and fusible plug of airside heat exchanger refrigerant of airside heat exchanger and other high pressure parts cannot be collected and refrigerant inside the refrigeration cycle is needed to be collected using refrigerant collection device 1 Liquid outlet valve A of airside heat exchanger is fully closed 2 Chiller unit is operated with chilled water fully flowing In case of air cooled heat pump type it is operated in cooling mode 3 Chiller unit is stopped when pressure of low pressure side is decreased to aprox 0 05 Do NOT operate Chiller unit under 0 05MPa Such operation may cause a compressor failure 4 After a few minutes later when pressure of low pressure side is increased to 0 45 0 5MPa chiller unit is re operated and 2 and 3 are repeated 4 5 times 5 This above operation enables the major part of refrigeration cycle to be collected in airside heat exchanger and high pressure pipe between B and A 6 Refrigerant remained in low pressure side pipe and water cooling device should be collected from stop valve D using refrigerant collection device pag 162 SMGBO0003 0 11 2006 Maintenance HITACHI Inspire the Next 6 7 2 Structure and Start up method of Compressor Structure of Compressor The structure of compressor used in this series is shown below figures 1 A screw of half sealed compressor is composed with male rotors and female rotors which have 5 6 dies
137. erating machine is not mixed with the chilled water 2 System a Study if materials of heat exchanger pipe tank valve etc are suitable b Prohibition of open the pipe connected with tank to ambient air Study of temperature flow pressure and minimum holding water volume of chilled and heating water 3 Water for use a Study of specification in case of brine b Study of specification in case of special water like pure water After working Maintenance item 1 Confirm if there is no leakage in pump valve pipe etc 2 Study of temperature flow pressure and minimum holding water volume of chilled and heating water pag 156 SMGBO0003 0 11 2006 Measures Analysis of water quality should be asked to a specialised company in water treatment If it is a negative result water source should be changed or treatment system should be changed after consulting with the company Corrosion may concentrate to only one part due to the difference of material in chilled and heating water system Open the pipe to ambient air may promote the corrosion Pipe should be put inside the water Control that these values be within the usage range Suitable brine for Hitachi s product should be selected Its specification is accorded with Hitachi technical handbook caution in use of brine There is a case that special water like pure water may not use in standard Chiller unit Especially in case of pure
138. es Run Alarm and Stop Red light indication lamp on Alarm Light red indication lamp on Light orange indication lamp on in case of option switch use Stop Light red indication lamp off pag 103 SMGB0003 0 01 2007 Troubleshooting HITACHI Inspire the Next Check mode By pressing A SW3 on PCB more than 3 seconds control state of chilled water temperature each refrigerant cycle pressure temperature etc are indicated it is possible both during stopping and during running mode shall not be shifted in case of alarm Pressing again A SW3 on PCB more than 3 seconds enables you to see the different values but with decimals Dot is indicated which CHECK means that it is check mode RUN RUN CHER POWER O ON OFF A Y Normal indication State SW4 Indication of check mode OPERATION O 1 cycle C1 ALARM O MANC During cooling Co Press more than 3 sec By pressing A V indication is changed The followings are the contents Example of code indication alternately Item Contents flicker Latest tecti In case of latest alarm activation of No 1 high pressure device state if alarm code is not saved it is 00 00 A Y alarm code 1 Pd high pressure indication MPa swa gt Example of Pd of No 1 1 42MPa A i Example of Pd of No 2 1 43MPa T Y y Indication of unit of 2 cycles e Indication of o
139. essure of R407C is higher than that of R22 and pressure strength of devices is increased Therefore devices for R407C are not compatible with that for R22 Use specified devices when replacing the compressor and refrigeration cycle parts at maintenance Do not put R407C to the units for R22 The following materials are published as a reference for RA07C handling Please see for them Implementation service and maintenance of Package Air conditionings with R407C material No HR 325 Implantation and service technique of devices used HFC series JRAIA 6 7 Manual at compressor overall check and parts check The refrigerant R407C used in this unit is HFC refrigerant and does not cause the destruction of ozone layer in contrast with CFC or HCFC refrigerant However its global heating coefficient is the same level as HCFC refrigerant therefore it is important to control the discharge Also it is necessary to collect refrigerant at disposal of device or at arrangement of devices Collection of refrigerant vacuuming and additional insertion of refrigerant at compressor overall check and parts check are shown in the following Handling of R407C alternative refrigerant is described in Implantation Service Technical of Devices used HFC Refrigerant Refrigerant at airside heat exchanger should be collected in case of compressor overall check and parts check However at replacement or arrangement of airside heat exchang
140. etection of air side heat exchanger outlet subcooled liquid temperature indicates abnormal value Is Printed Circuit Board for Relay PCB connector CN22Te1 correctly connected Yes Disconnect connector and measure resistance Is the resistance correct Yes pag 128 1 Cycle 2 Cycle 3 Cycle 4 Cycle 9 Cycle PCB 1 O PCB CN24Td PCB PCB CN24Td PCB PCB CN24Td PCB 1 O PCB CN24Td I O PCB CN24Td Plug Wiring Repair No Replace Thermistor Replace printed circuit board for CPU PCB Liquid Temperature Thermistor Abnormality PCB Monitoring Position No No No No No No 1 Cycle PCB I O PCB CN22Te1 2 Cycle PCB I O PCB CN22Te1 3 Cycle PCB PCB CN22Te1 4 Cycle PCB I O PCB CN22Te1 5 Cycle PCB PCB CN22Te1 No Replace Thermistor SMGBO0003 0 01 2007 Replace printed circuit board for Relay PCB Troubleshooting Alarm code wr R Alarm Stop Reason Thermistor for detection of water No 1 Cycle side heat exchanger outlet backside inside of heat exchanger N ips O temperature indicates abnormal value Is Printed Circuit Board for Relay PCB connector CN3 correctly connected Yes Disconnect connector and measure resistance Is the resistance correct Yes wore uo Lt Ln N
141. f cycle or accident in compressor Hose for charge It is possible to change the composition when putting from refrigerant tank to Charging cylinder charging cylinder Under studying the handling Detection method is different Detector of gas leakage Sensor of conventional detector of gas leakage is very low and practically it is impossible to use wore The specification of connection screw is different from measurement device for R410A R407C R404A UNF7 16 R410A UNF 1 2 R407C should be added in liquid state Manifold valve with sight glass Specialized for R407C Refrigerant tank with siphon pipe Specialized for R407C Connect to C D parts Brown Hose for charge Specialized for R407C Balance pag 173 SMGB0003 0 11 2006 Maintenance A caution Do NOT add refrigerant in gas state from suction side of compressor gas side stop valve A caution Refrigerant should be added ina suitable volume since excess or less insertion cause alarm or accident of compressor pag 174 HITACHI Inspire the Next 1 After vacuuming additional refrigerant should be inserted in liquid state with stop valve of liquid side and gas side close Confirm the volume by the balance In principal collected refrigerant from water side heat exchanger to outside of refrigeration cycle by collection device is measured to determine the volume If it is impossible to measure it use t
142. former Accessory Power Meter Option Accessory for CSNET WEB PM001 CT400 P 7E891931 NeW Current Transformer Accessory 1000A PM001 CT1000 Power Meter Option 7E891932 Accessory for CSNET WEB Communication Set PM001 GW Power Meter Option 7E891933 Accessory for CSNET WEB Power Meter Option 1 For CSNET WEB 7E891934 Touch Screen Option 7E891 For WEB Wall Support for Touch Screen TS001 WS Touch Screen Option 7E891936 Accessory for CSNET WEB Table Support for Touch Screen TS001 TS Touch Screen Option 7E891937 Accessory for CSNET WEB pag 10 SMGB0003 0 10 2006 Product range and H ITACHI specifications Inspire the Next 1 Product range and specifications This chapter provides you with a fast review of the most important general data of the Air cooled water chillers and Air to water heat pump chillers of HITACHI 1 Product range and SpecificatiONS ocoooccocncocncocnoccnnonnnononoconononononannnnnonnnnnnnnnnos 11 1 1 General data tor RCUE40 400AG2 12 1 2 General data for RHUE40 240AG2 page 11 SMGB0003 rev 0 01 2007 Product range and specifications 1 1 General data for RCUE40 400AG2 HITACHI Inspire the Next Cooling Capacity Total Power input COP Outer Dimension Cabinet colour Net weight Compressor type Models Quantity Oil heater Capaci
143. g is performed Defrosting start conditions 2 min from starting unload Normal 55min At longest 115min Compressor operation gt designed time limitation of defrost interval Evaporating temp lt 6 C AND air side HE inlet refrigerant Automatic ambient temp evaporating temp 2 ambient temp corrected value detection of frost vol Low pressure Ps lt 0 1MPa Manual defrost SW ON ER AND Not during defrost operation Defrosting is performed for 6 minutes at longest automatic stop when all frost is taken out Incase that all frost is taken out very quickly the period till next frost is extended automatically in order to avoid too much defrost Warm water outlet temperature is lower than inlet temperature due to the reverse cycle defrost pag 72 SMGB0003 rev 0 01 2007 Control system H ITACH Inspire the Next Confirmation of defrost conditions Fan 0 Hz order Changeover of 4 way valve Capacity control hold 10 sec count Water side HE inlet Yes refrigerant temp lt 0 C RILI C ay Load down output No 10sec output Water side HE inlet refrigerant temp lt 2 Load up continuous output No Capacity control hold 3 min from defrost start 1 Yes Yes Water side HE inlet Ed refrigerant temp lt 10 C if during fan operation fan OHz order q Fan operation control Yes High pressure 22 1M
144. he following figure to determine the volume confirming the balance pressure after collection operation 2 If it is impossible to add regulated volume due to the lower ambient temperature compressor is operated in cooling mode and liquid refrigerant should be added from stop valve for refrigerant insertion C Then regulated volume is added with the liquid side stop valve high pressure side open a little bit N Check steadily again using the Insertion of additional refrigerant detector of gas leakage specialized for R407C y y Alarm Check for refrigerant leakage should be performed steadily The refrigerant used in this unit is incombustible non toxic and odourless safe one However toxic gas is produced when leaked refrigerant is exposed to fire And oxygen will be lacked due to that refrigerant its gravity is higher than air is spread in the floor RHUE50AG2 RHUE70 80AG2 AS RHUE40AG2 Additional refrigerant insertion volume per 1 cycle kg Pressure of low pressure side after collection operation MPa SMGBO00083 rev 0 11 2006 Maintenance HITACHI Inspire the Next The replacement of expansion valve can be performed by collecting the refrigerant to air side heat exchanger in the method shown in the 1 Collection of Refrigerant And pay attention to the following points Electrical expansion valve is used in this product and its opening is almost closed 10 pulse at compressor sto
145. he position of propeller Investigate gt fan Check each bolt if loosen gt gt Tighten up Check suction gas temperature gt Ensure superheat pressure Check suction gas temperature and 9 gt Replace compressor oil level Check the current to oil heater gt Replace oil heater Noise from inside of compressor 9 Replace compressor Check the roughness of contact gt gt Replace contact points Check screws if loosen gt Tighten up Troubleshooting 5 4 Thermistor characteristics HITACHI Inspire the Next The thermistor is installed in this product to detect the cycle temperature such as water temperature inlet outlet of water side heat exchanger Ambient temperature and outlet liquid refrigerant temperature air side heat exchanger The temperature characteristics are shown in the below figures 5 4 1 Thermistor temperature characteristics All temperature except discharge gas pag 145 Thermistor resistance KO ATA go ML USS EE MEL MEM PENES BEES El N e ae Er AS O 1 Tbh Zan 25 PESE MN NEU 8 1 3kQ i 0 0 15 20 25 30 35 40 45 50 55 60 N al Oo al gt SMGB0003 rev 0 01 2007 HITACHI Inspire the Next Troubleshooting 5 4 2 Thermistor temperature characteri
146. ide heat exchanger washing area 4 Positive revolution of fan Confirm if fan is spinning in counter clockwise rotation observing the fan from the above 5 Check of gas leakage Confirm if gas is not leaked after stopping the operation pag 22 SMGB0003 rev 0 01 2007 Test run H ITACHI Inspire the Next 2 2 2 Cooling operation low pressure high pressure 3 0 0 6 E 2 9 04 o 2 0 Cooling operation 02 2 15 3 4 Fig 4 0 5 7 9 11 13 15 15 10 0 10 20 30 40 46 Chilled water outlet temperature C Ambient DB temperature C 2 2 3 Heating operation low pressure high pressure 06 2 8 d a 24 Heating operation 2 5 20 2 0 2 d e Fig 5 S 5 16 3 2 0 r 12 15 10 0 10 20 35 40 45 50 55 57 Ambient WB temperature C Heated water outlet temperature C Low pressure and high pressure corresponding to outlet temperature and ambient DB temperature are within the below area at 100 operation normally Fig Standard operation pressure at 100 operation 0 8 3 0 c T Area need to clean A 25 06 5 Saturated 5 20 Y curve ih 0 4 u ag Fig 6 1 5 3 rea need to clean D 02 I 1 0 10 0 10 20 35 40 45 50 55 Chilled water outlet tempe
147. in case of remote control TC CCS HS Pac 1 BSR2 BSR2 Ol no TE Stop Q Run o S AC Air conditioning l mel HS Heat Storage 220 240V MM pag 60 SMGBO0003 rev 0 01 2007 Control system H ITACH Inspire the Next Heat storage operation 1 100 096 heat storage operation 2 100 096 The below example chilled water outlet temperature 7 C and chilled water outlet temperature 10 C in cooling Running operation Run Stop signal is received from external Thermo contact Water temperature is set by the switch to set the temperature f operation signal is input in local capacity control operation is performed Do not connect the wiring for remote operation a Dip Switch Setting In option A 3 and 4 are ON 0 1 No 2 SW9 Do i Option A aU 6 Chilled Water Temperature Setting Worm Water Temp Setting 5 a RSWA 0 0 Q 0 07 ear o E LO ns E 0 Q o 0 gt Ser p ger eer ger f s f JE GP Seq E Current lime SW6 Swe Defrost by A
148. inconvenients on the system Indication on the segment at normal operation standard menu display is as follows Segment indication abnormal code Contents 1 l 1 gt gt D 3 l 1 l 1 1 vores C1 C5 means No of cycle C1 Cycle 1 Power ON Wait for pump feed back Procedure of ex valve zero reset After pump feed back At cooling operation At heating operation ON At activation of ALARM O current limit No of cycle No 1 POWER RUN RUN PRESS OFF A Y At thermo OFF At stop operation Number of cycle whose manual set switch is ON is indicated alternately tis a state from the output of pump operation signal to the confirmation of pump interlock In case that pump interlock is confirmed immediately it is possible that the indication is not checked visually since the indication time is too short pag 97 SMGBO0003 rev 0 01 2007 Troubleshooting Ex High pressure interrupt device for unit 1 is activated re operation in unit 2 Flickering alternately Ex Phase detection abnormality mae E common abnormality Flicker pag 98 Individual Alarm stop only the corresponding cycle Common Alarm Stops unit HITACHI Inspire the Next Abnormal code of segment indication part r In this section abnormal code is explained See subchapter 5 2 3 Method of failure diagnosis for the concrete treatment Seg
149. ing C Connection lot Copper union under Needle Collar Ball Ring spring Disk spring Leaf spring tray Leaf spring Piston Piston cylinder Snap Ring A Wave spring washer Female Male Magnet Connection fitting Coil spring C Fixing bracket Qty Material SUS303 SUS304 SUS305 SUS420 SUS304 SUS304 SUS440C C3771 C3771 C1220 SUS304 SUS304 S65CM SUS304 SUS303 C1220 SUS303 C3604 SUS440C SUS304 SUS304 C3604 SUS304 PTFE SUS303 SK 5M S65M Cu alloy SUS303 Ferrite A6D61 SUS304 SUS303 Control system H ITACH Inspire the Next In this series electronic expansion valve is used Electronic expansion valve is consisted in the body figure Coil and PCB for expansion valve running PCB VD 1 The range of opening of expansion valve The opening of expansion valve is managed by pulse number The range is 116 656 pulse During stop it is stand by with 10 pulse 2 PCB for expansion valve running PCB VD PCB is used The pulse number of the opening of expansion valve is indicated in the segment on VD PCB 3 Zero point adjustment Zero point is adjusted by initialization at power ON The order of opening of expansion valve is closed fully less than O pulse and both control pulse number recognized in micro computer and real pulse number are adjusted to zero During this adjustment Cn Eo is indicated in the segment n Unit No Zero point adjustment is also performed
150. ion Failure R ir th ini Check circuit by tester uui Printed Circuit Printed Circuit Board gt connection Board Failure Failure M the thermist Thermistor Malfunction ed da Replace thermistor resistance Pump and fan run but Coil Breaking Check circuit by tester Compressor MO Magnetic Contactor Measure the voltage between Replace magnetic i i i UR Failure Contact points Failure contact points of electromagnetic contactor gt h ter t t Thermostat is activated Thermo Off x pce It is not failure change the setting temperature gt M he i h gt Compressor Motor Failure T e resistance Replace compressor gt Compressor Failure Beat noise from compressor gt It with electri Voltage at starting up is low Measure the voltage o E power company p Excessive dust in air side heat gt gt exchanger Remove it Inlet or outlet of air side heat 3 Insufficient air in air side exchanger is clogged heat exchanger j gt E C SOM Secure the service space Chiller Unit Ch iring for f Reverse Rotation of Fan Motor el MU motor Air temperature through Air Short Circuits in Chiller Unit Remove short circuits air side heat exchanger __ Another heat source around gt is excessively high E Remove heat source Refrigerant excessiv
151. ion Activation of Additional Protection Device Option Error communication between Chiller and Remote Controller If CSC 5S is connected Retry Operation More Than 3 Fans Retry at The Same Time Retry Operation by Alarm Fx 41 or Fx 51 x Cycle No Retry Operation by Alarm Cx 6x or Cx 7X x Cycle No Retry Operation by Alarm Cx 9x or Cx LX x Cycle No SMGBO0003 0 01 2007 Troubleshooting General check of failure diagnosis In the case of no segment indication unit can not operate No Is 380 415V supplied to the unit gt Is 220 240V supplied to transformer primary side Yes Is 30V in PIN1 PIN2 No 16 3V in PIN3 PIN4 19 6V in PIN5 PING of the printed circuit board for CPU PCB connector CN2A Yes Is 26 7V in PIN1 PIN2 No 17 6V in PIN3 PINA 17 6V in PIN5 PING of the printed circuit board for CPU PCB connector CN2B Yes Is voltage in each test PIN of printed circuit board for CPU 5 V part VCCO5 GND1 VCCO5N GND1 V5B GND1 VCCR GND1 15V part VCC15T GND1 only more than 2 cycles unit 15V part VCC15T GND1 24V part VCC24 GND1 VCC24T GND1 Yes Are connector FCN1 FCN2 on the printed circuit board for CPU PCB and Printed Circuit Board for Display and Operation PCB PCB correctly connected and checked loose connection Yes pag 111 SMGB0003 rev 0 01 2007 Check the power source switch Is fuse broken Y No Is
152. ion Gas Thermistor Open Short Failure of Discharge Gas Pressure Sensor Open Short Failure of Suction Gas Pressure Sensor Open Short Incorrect Setting of Fan Number No Feedback Signal from Water Pump Fan Inverter Rotation Abnormality Activation of Fan Inverter Over Current Protection Control Fan Inverter Phase Abnormality Error Communication between Inverter PCB and Control or Fan Control PCB Inverter Power Supply Abnormality Phase Abnormality Only for 1 3 cycle unit Failure of Water Inlet Thermistor Open Short Failure of Water Outlet Thermistor Open Short Only for 1 cycle unit Activation of Freezing Protection Control Only for 1 cycle unit Activation of Water Overheating Protection Control Failure of Ambient Temperature Thermistor Open Short Pump interlock Signal abnormality ight side Segment shows Fan No SMGB0003 0 01 2007 Troubleshooting Alarm Code No 1 5 cycles 4 I z gt ut 1 m r pat Flickering pag 110 HITACHI Inspire the Next Description of abnormality Incorrect Operation Error communication between Ctrl PCB PCB PCB C1 c Error communication between Expansion Valve PCB and Cntrol PCB Error communication between Fan Contol PCB and Cntrol PCB Alarm of Excessively High Water Temperature Alarm of Water Failure Differential Water Pressure Switch Opt
153. it Board Failure Printed Circuit Board Failure Pump Breaking of Coil Magnetic Contactor for Pum wae Loose Connection Failure 52P Pump Pump locked Over before Rela Pump Over current compressor M d relay RC Value Wrong running TRP 5P Alarm Pump over current relay failure pag 141 SMGB0003 rev 0 01 2007 A d d 1414 9 y Check Point Measure voltage by tester Check power switch Check falling of wiring coating Measure insulation resistance Measure the interphase resistance insulation resistance Check falling of wiring device Measure insulation resistance Measure the coil resistance Conductive Foreign Particle Measure resistance Measure the transformer secondary voltage Wiring Check the connection of R S and T phase Check changeover switch Check the current by tester Measure the voltage of contact point of magnetic contactor Check water freeze clogging of foreign particle Check the RC value and pump running current Push reset button and check running current Countermeasure Wait the recovery of power source gt Power Switch ON Eliminate short circuit and replace fuse Eliminate the earth fault and replace fuse e Replace compressor and fuse Replace fan motor and fuse Eliminate short circuit and replace H gt fuse Eliminate earth fault and replace fuse Replac
154. it since insulation of electrical device has failure Check if insulation works well Do not operate the unit in case of below 3MQ in 500V DC fig 1 Check if insulation works well Do not operate the unit in case of below in 500V fig 1 Confirm touching directly with hands if the wiring is not removed or loosed Confirm the covered insulation part Pay attention not to touch it by wet hand or to touch directly the edge of metal plate or high temperature part of electrical devices fig 2 Confirm if earth wire is installed correctly and not broken Confirm if R S and T phase are connected correctly Confirm the local wiring size If the volume is not sufficient it may cause extreme heating or fire Confirm if convex part of electrical expansion valve coil is well fixed to concave part of electrical expansion valve body Test run Quality control Diameter of water pipe valve open _ open direction liquid type a direction state opening Fig 3 Water temperature HITACHI Inspire the Next Confirm if the water quality follows the guideline detailed in the technical catalogue Strange noise or abnormal vibration can occur if water pump is not installed well or water pipe is too long Confirm the piping in the following sample method fig 3 Open the inlet outlet valve of water and pass the water inside the water heat exchanger and pipes While operating the water pump
155. jo o A A N SS o e v v VY IV V V V V m 2 50 m uw m m Y PCN17 PCN19 PCN14 PcN13 2 ins 1 FCN2 49 epo 1 13 PCNTG n MEIL 3ME9A lt T CN12 Ae 8 Fa gt O N ATA ac am v o 2 AA gt lt 9 gt d ollo Ou px E MIB SS SS E N CN4 4 A NP v 7 1 CEVSO al D 29 2 CN11 CN2C Sls N 5 ql CN5 vi v ES 3 9 cne TO gt 2807 12 CN2B 5 P e CN7 5 3 1 4 E CN15 5 29 5 o 4 CN2A lt 4 SS Mm o 2 5 N O ges gu us mu H 5 T 2FCN126 ons ap e iz ES PCN3 PCN4 PCN5 PONE 1 25 11d 4 975311 7531 531 53 31 31 AL IAA A NO B 00 E C o 2 Ez 9 0 a co M MEE 6 mo 99195 E OOG Ie NSH x eSP y m m epo 3 Qe 90 330 JOE I co fous E ZMS Bee 9MSS El ES salo 2159 S237 BOS Elo O ee A zo SMS 1 6MSY Drawing Code O XEKS1045 r1 NOTE All the field wiring equipment must comply with local codes For more information about DWS configuration please refer to chapter 4 of this catalog
156. l system Inspire the Next 4 Pulse input Il a Signal and basic sequence DC24V ON signal Remove it OFF signal More than 200 m _ cr Ei RY RY ON d More than 3 min than 200 m 1 Construction in local parts prepared in local E STOP b Setting method It is an application of remote control and it is unnecessary to modify the setting of PCB arren TION Additional wiring should not be connected to other operation circuit especially wiring for 220 240V Additional wiring shall be put into a metal pipe independently or shield line shall be used pag 67 SMGB0003 rev 0 01 2007 Control System H ITACH Inspire the Next 4 12 Installation of switch for snow measure Fan manual operation Installation of switch for snow If a switch for snow measure is installed it is connected to terminal 31 and 82 in measureHeat storage operation customer wiring terminals When the switch is ON fan is operated during unit stop or by external order Thermo OFF However the fan is not operated in the following cases When local is set During alarm occurrence When the switch has been ON before power ON including power failure Fan manual operation is stopped by the stop switch of unit body Customer Terminal 37 Q Switch O prepared 52 in local Chiller unit side Installation in local arren TION possible to
157. lary for compound gauge in low pressure side is installed in check joint This capillary should be removed from check joint Vacuuming procedure is shown in the following Manifold valve vacuuming pump and vacuuming gauge for R407C are connected Operate vacuuming pump for at least 1 2 hours until vacuum grade be below 55mmdHg 5Torr pressure Manifold valve Abnormal for vacuuming leakage water atmosphere in pipes pressure A CAUTION If vacuum grade is not decreased to 55mmHg in 1 hour confirm if there is no leakage or if water is not in the pipes Connect to D E parts and then keep Vacuum vacuuming other 755mmHg 1 hour Vacuuming pump prevention of adverse current Vacuum Leave 1 2 hrs 1 hour Confirmation of vacuum Vacuum gauge should be used to measure a target vacuum however it is impossible to read the vacuum gauge installed in the manifold very accurately It is recommended to use a digital vacuum measure device available in the market pag 170 SMGBO0003 0 11 2006 Maintenance HITACHI Inspire the Next Water evaporation In atmosphere pressure water boils at 100 C however each time a pressure in pipes reaches to a vacuum state water boils at lower temperature than 100 C The lower this temperature is the more water evaporates and vacuum drying is kept A caution If there is a possibility of dew condensation vacuum vacuuming time
158. lime SW6 Swe LO O Defrost by Ambient Temp Current Limit Set C Setting of air conditioning temperature 2 Set chilled water outlet temperature as 10 C using Aor V switch on indication PCB see item 4 for the setting method d Wiring for switch Wire as the below figure Terminal No 23 24 wiring makes 2 setting temperature valid NI NI 23 24 Switch for setting temp SW3 a a 2 NES Eu 220 240V 2 Air conditioning operation capacity control heat storage operation 100 0 The below example chilled water outlet temperature 7 C capacity control in cooling and chilled water outlet temperature 10 C in heat storage Running operation Run Stop signal Local or remote cooling external Thermo heat storage Water temperature is set by air conditioning heat storage switch Air conditioning heat storage Air conditioning setting water temperature heat storage setting water temperature pag 59 SMGB0003 rev 0 01 2007 Control System H ITACH Inspire the Next In case that operation signal is input in local at heat storage operation capacity control operation is performed a Dip Switch Setting In option A 3 and 4 are ON In option A 3 and 4 are ON
159. lti Pass cross finned tube Fan Motor pole kW 0 38 8 Quantity 4 4 4 6 Refrigerant type R407C Factory charged Flow control Electronic expansion valve Number of independent circuits 1 1 1 1 Quantity of refrigerant 39 46 41 48 Oil type JAPAN ENERGY FREOL UX300 Ester Water pipe connection Inch Victaulic 1xInlet 1xOutlet Control system Micro processor control Chilled water outlet temperature C 10 Option 5 15 Heated water outlet temperature C 95955 Condenser air inlet temperature C 15 46 for cooling operation Evaporator air inlet temperature C DB 9 5 21 WB 10 15 5 for heating operation Permissible water pressure max MPa 1 0 Reverse Phase Protection Fuse and Thermal Relay for Compressor Internal Thermostat for Compressor Compressor Oil Heater Fuse and Internal Thermostat for Fan Motor Control Circuit Fuse Safety and protection devices High Pressure Switch Low Pressure Control High Pressure Relief Valve Discharge Gas Temperature Control Suction Gas Temperature Control Freeze Protection Control and Compressor Operation Hour Meter Power suply 3 N 380 415V 50Hz 2 NOTES 1 The nominal cooling capacities are based on the European Standard EN12055 Chilled Water Inlet Outlet Temperature 12 7 C Condenser Inlet Air Temperature 35 C 2 The nominal heating capacities are based on the European Standard EN12055 Heated Water Inlet Outlet Temperature 40 45 C
160. mbient Temp Current Limit Set CN ON b Setting of operation PCB of unit body setting of air conditioning temperature Set chilled water outlet temperature as 7 C 0 1 No 2 SW9 SW O DSW Li Option A MN wi een SO s Chilled Water Temperature Setting Warm Water Temp Setting ALL p e RSWA Uy ace 0 0 ELO E aa ae O O ub 0 0 0 S Alor EG f J 55 0 Se ES E Current Sie EOS Defrost by Ambient Temp Current Limit Set SI N c Temperature setting by indication PCB Set chilled water outlet temperature as 10 C using Aor V switch on indication PCB pag 61 SMGBO0003 rev 0 01 2007 Control System H ITACH Inspire the Next d Wiring for the switch and external Thermo contact input Wire as follows With short circuit wiring gm e O Ol O Qre 0 6 EE E v External Thermo Contactor Q gt 220 240V Don t connect AC Air conditioning HS Heat Storage 4 Setting method of second temperature Second temperature setting mode is set by pressing W switch for more then 3 sec on indication PCB with Unit power ON By pressing Aor Y
161. ment Indication abnormal code ul e man eae mean Lit Nr 25 a a Lot a na m aa E FP EX pun a Li a OR 7 a e gt w UC 4 0g 9g Linn aw N lt X y N Lt a D 1 No Luc ot Lf 71 E a big AE SMGBO0003 rev 0 10 2006 m ANNI A nmn Ln Ln m Li um al n D lt a e Ae Ll Luc Dc Ln a al a a eon e i n n iu Lit L3 LE Ll n n ra 1 Ll 11 LC LES aa m a m y Lt m NN jy o y d LY Mi E aa a bog bad AE AX Lh a al OLI Luc mt a Contents Activation of High Pressure Block Devise 63H Activation of Suction Pressure Block Device Activation of
162. min output of fan inverter frequency 6Hz Fan inverter frequency is 20Hz at high pressure 1 8MPa Hold after output of load up 10 second Compressor stop retry code Cn P6 Re start in 3 min alarm 3 times in 30min Compressor stop retry code Cn P6 Re start in 3 min alarm 3 times in 30min Hold after output of load down 10 second Hold after output of load up 12 second Pump stop Alarm output PU PU is flickering in the segment Release conditions 30 min and High pressure 2 5MPa 10 min and Cooling only Low pressure 0 363MPa 30 min or high pressure gt 2 0MPa during fan is fixed at 20Hz 30 min 30 min High pressure low pressure gt 0 3MPa 1min Warm water temperature 60 C Automatic release of alarm Troubleshooting HITACHI Inspire the Next SEMEN liellle iqeijsme c 83 Sn 84 5 1 1 Check of power supply and connection ooccccccoccncccccnnnnononcnnnononcnnnnoncnnnonnnnnnnnonnnnnonnnnnnnnnnnnnonannnnnnnnnnnnnnnnnos 84 AA e e Ue E A 85 5 1 3 Confirmation of activation value of protection device an Automatic operation device 96 5 1 4 Individual indication for activation of protection device oocccocccccccncccccncnocnnonncnnnnonnnononnnonnnnnnnnnnnnnnnnoncninonos 97 5 1 5 Modification of PCB sensui e
163. n Refrigerant temperature in water side heat exchanger inlet Tr is less than 6 5 C during 3 seconds only for cooling operation Alarm stop retries during 30 minutes Compressor stop automatic restart in 3 minutes Refrigerant temperature in water side heat exchanger inlet Tr is less than 35 C during 10 seconds only for defrosting operation f the time between the end of a defrost and the confirmation of the conditions to start again a defrost in the same cycle is less then 13 minutes No retry during defrosting operation Alarm stop immediately No J Is the wiring of connector in the Printed Circuit Board for Relay PCB correct Yes Pull out connector and No measure thermistor resistance Is resistance correct Yes Yes Check Printed Circuit Board for Relay PCB pag 118 SMGB0003 0 01 2007 HITACHI Inspire the Next Excess Low Temperature of Cooler Inlet Refrigerant Tr PCB Monitoring Position No 1 Cycle PCB I O PCB CN27Tr2 No 2 Cycle PCB PCB CN27Tr2 No 3 Cycle PCB I O PCB CN27Tr2 No 4 Cycle PCB CN27Tr2 No 5 Cycle PCB I O PCB CN27Tr2 Retry Code No 1 Cycle C1 P6 No 2 Cycle C2 P6 No 3 Cycle C3 P6 No 4 Cycle C4 P6 No 5 Cycle C5 P6 Plug correctly and repair wiring Replace thermistor Check the water flow rate Check temperature of inlet and outlet Clogging of
164. n THMIwon2 THMdn PFCn PFFn THMa NFn NFA B 11 9N MVn CT1 2 FF11 N4 MFFn CA11 N6 SV11 N1 SV12 N2 SV13 N3 TMn PCBA Name Compressor Motor Condenser Fan Motor Main Isolator Contactor for Compressor Motor Contactor for Compressor Motor Start Operation Contactor for Compressor Motor Delta Operation Contactor for Condenser Fan Motor Fuse for Compressor Motor Overcurrent Relay for Compressor Motor Fuse for Condenser Fan Motor Internal Thermostat for Compressor Internal Thermostat for Fan Motor Crankcase Heater Auxiliary Relay High Pressure Switch High Pressure Sensor Low Pressure Sensor Inlet Water Temperature Thermistor Outlet Water Temperature Thermistor Cooler Inlet Refrigerant Thermistor Suction Gas Temperature Thermistor Water Temperature cooler backside Discharge Gas Thermistor Fuse holder for Compresor Motor Fuse holder for Compresor Fan Motor Ambient Temperature Thermistor Noise Filter PCB Noise Filter PCB Electronic Expansion Valve Exp v Current sensor Fan five protection Fan motor inside Electrical Box Capacitors for Fan Fuse Solenoid Valve for Starting Solenoid Valve for Load down Solenoid Valve for Load up Hour Meter Printed Circuit Board for Display pag 48 Remark Mark PCBB1 B2 PCBC1 C2 PCBD1 PCBE11 PCBF1 F2 PCBG1 G2 G3 WP or optional Circuit EEN Breaker PSWn EHn or optional Circuit 1F1 2 3 4 5 6 7 Breaker AWNn SW
165. nd heat storage operation order shall be input to Chiller unit separately Local external Thermo order shall have at minimum 5 minutes interval of continuous operation order 5 min in case of stop Additional wiring shall be put into a metal pipe independently or shield line shall be used During control by external Thermo Chiller unit stops when water temperature reaches to the setting value of Chiller unit and automatically starts again Therefore set the temperature in external Thermo higher than that of chiller unit If Thermo setting value of body side is set higher at cooling and lower at heating unit is stopped earlier than the stop order from external Thermo owitch normal heat storage operation during unit stop Operation by DC24V input Remote Control Outline Operation control by DC24V is explained here Operation signal pattern 1 Level input 2 1 pulse input 3 2 pulse input as follows and perform additional wiring in each 3 cases This control is not compatible with other remote Run Stop order Level input a Signal and basic sequence Arrangement in local Terminal A _____ 262 __ l dj Run Stop switch l prepared in local cd Switch ON ES _ zum B 0 HUE Operation Alarm output mh Switch OFF DC24V under 0 8A Relay coil etc for DC24V prepared in local Relay coil has electricity at alarm occurren
166. ndication Capacity control state indication Y Protection control activation state indication p y Fan control state indication pu Y Control software ROM N indication Example of code indication alternately flicker Lic ESR jel ESE del 5 E jHaje NS HF tel H ERI JES PEC Operation mode Protection control state E Qe E uu EN Order frequency Fan control state t B HITACHI Inspire the Next Contents 1 Chilled water setting temperature indication C in case of setting temperature 12 C integer round up is indicated in case of 0 5 C setting 2 Warm water setting temperature indication C only heat pump type in case of setting temperature 40 C integer round up is indicated in case of 0 5 C setting 3 Chilled water second temperature setting indication C in case of setting temperature 5 C only at alarm selection 4 Warm water second temperature setting indication C only heat pump type in case of setting temperature 45 C It is indicated only if heat storage is selected 5 Neutral zone range indication C Ambient temperature indication C In case of 35 C Capacity control state in every cycle Continuous control spec Load up UP Neutral Zone nU Load down d0 Thermo OFF In case of 2 cycles C2 Ld Protection control sta
167. ndition Evaporator Temp Ambient Temp PCB RSW9 No function 12 2x1 2 C 22 2 2 4 93 9x2 189C 02 10x2 20 C PCB SW5 See explanation for PCB RSW1 2 PCB SWS No function PCB SW6 Remote unit control Standard is ON PCB SW 6 No function REMOTE STANDARD SW6 LOCAL wees SW6 TE PCB SW7 Pump operation REMOTE STANDARD PCB SW7 No function WT LOCAL gg 8 SW7 ON 3 PCB SW8 Operation Mode Sw8 PCB SW8 No function HEAT OFF SW8 pag 92 SMGB0003 0 01 2007 Troubleshooting HITACHI Inspire the Next PCB 5 9W9 SW10 High Cut check Fan Stop for Check SW9 PCB ON gt Checking Cycle 1 SW10 PCB ON gt Checking Cycle 2 SW9 SW10 PCB ON gt Checking Cycle SW9 PCB gt Checking Cycle 4 SW10 PCB gt Checking Cycle 5 PCB SW11 SW12 Manual Defrost Only Heat Pump models PCB Not available function SW11 PCB ON gt Checking Cycle 1 SW12 PCB ON gt Checking Cycle 2 SW11 SW12 PCB gt Checking Cycle RSW9 Sw9 SW10 O DIP SWITCH SETTING PCBC1 C2 MAIN CONTROL PCB Master amp Subsidiary DSW 1 H LINK end resistance ON only PCB C1 DSW 2 Fuse protection PCBet c2 a C4 BNOd 9NOd SNOd Woe Ws aw e 93 SMGB0003 0 0
168. ng Check chilled water thermostat setting value Within the working range Shortage of refrigerant Gas leakage Clogging of low pressure pipe Clogging of expansion valve Malfunction of check valve Malfunction of expansion valve Troubleshooting Alarm code 57 57 Alarm Stop Reason HITACHI Inspire the Next No Feedback Signal from Water Pump arren TION Pump operation feedback signal terminals 1 2 is OFF during pump Interlock CMP ON terminals 3 4 It is available once feedback signal confirmed PCB Monitoring Position PCB CPU PCB PCN24 No Printed Circuit Board Is 220 240V the voltage is normal between connector PCN4 PIN1 and connector PCN4 PIN3 on the Printed Circuit Board for CPU PCBc Yes Printed Circuit Board for CPU PCBc check pag 120 During pump operation during unit stop Alarm is reset by 1 Feedback signal reconfirm 2 Pump stop 3 Unit operation It is not reset by stop operation Yes Is thermal relay for pump TRP activated Go IGEK No Check thermal relay for pump Check wiring around pump and thermal relay for pump SMGBO0003 0 01 2007 Troubleshooting Alarm code Alarm Stop Reason Power source connected to unit is reversed phase or open phase Phase Abnormality Reverse Phase Phase Failure In case of 1 3 cycle unit 05 05 In case 4 5 cycle unit C 1 05 C5 05 Is 3 phase power sou
169. nly the unit whose manual set SW is ON A DT e 2 Ps low pressure indication MPa 5 In case of unit of 2 cycles C2 PS V y 3 Td discharge gas temp indication C E dedel in case of Td of No 1 81 C a In case of unit of 2 cycles C2 td Me 4 Ts suction gas temp indication C in case of Ts of No 1 2 C A In case of unit of 2 cycles C2 tS Bo y 5 Tr Plate heat exchanger inlet refrigerant temp indication Refrigerant gt ERA in case of Td of No 1 5 C Po cycle state In case of unit of 2 cycles C2 tr M 6 Te Refrigerant liquid temp indication C N In case of unit of 2 cycles C2 tE bg iu 7 Inlet water temperature indication C in case of inlet water temperature 12 T 8 1 Outlet water temperature indication C T V puo 4 gt in case of outlet water temperature 7 C For units with more than one cycle this is the average sws value sw 8 2 Individual outlet water temperature indication C In 2 cycles chilled water outlet temp every cycle is A gt indicated no indication in case of 1 cycle DT in case of outlet water temp of No 1 7 C 1 gt in case of outlet water temp of No 2 7 C A Unit whose manual set SW is OFF is indicated us pag 104 SMGB0003 0 01 2007 Troubleshooting Item Y Setting state s indication A y A Y pu Ye Ambient temperature y i
170. o M HITACHI Inspire the Next Abnormality of Outlet Water Temperature Thermistor for Protection PCB Monitoring Position No 2 Cycle The connector position differs from product model Product Model RCUE 40 80 AG2 RHUE 40 80AG2 RCUE 80 400 AG2 RHUE 80 240 AG2 pag 129 Abnormal Code Thermistor Outlet water temperature Thermistor backside of cooler Outlet water temperature Thermistor backside of cooler Outlet water temperature Thermistor backside of cooler Outlet water temperature Thermistor backside of cooler Outlet water temperature Thermistor backside of cooler Outlet water temperature Thermistor backside of cooler SMGB0003 rev 0 01 2007 3 Cycle No 4 Cycle No 5 Cycle PCBD1 I O PCB CN23Te2 PCBD2 I O PCB CN23Te2 PCBD3 I O PCB CN23Te2 PCBD4 I O PCB CN23Te2 PCBD5 I O PCB CN23Te2 Plug Wiring Repair Replace Thermistor Replace printed circuit board for Relay PCB PCB Connector PCB D1 PCB D1 PCB D2 CN23 PCB D3 PCB D4 PCB D5 Troubleshooting E ELE Alarm code rr Li Alarm Stop Reason Thermistor for detection of compressor suction gas refrigerant temperature indicates abnormal value No HITACHI Inspire the Next Suction Gas Temperature Thermistor Abnormality PCB Monitoring Position No 1 Cycle PCB I O PCB CN25Ts No 2 Cycle
171. ode operation O OOOO N 1 cycle C1 sw3 SW4 A alarm O Under cooling Co Press them simultaneously more than 3 sec Way to clear alarm occurrence data valid only during stop Power ON N 1 CHECK Press while O pressing at the same time SW11 sw3 SW4 By pressing V indication is changed The followings are the contents Example of code indication alternately Item Contents flicker Latest activation of r tion E m The latest alarm is indicated firstly Max 10 code In case of 5 alarm is saved no 5 is indicated firstly m In case of the latest alarm No 1 high pressure block ps device activation 7 x If there is no saved alarm code 00 00 A bT 5th oldest Activation of protection gt The 5th oldest alarm pump interlock abnormality device Pu 4 alarm code E El 4 The 10th alarm Error operation naj Alarm of more than10th oldest is renewed The following operation makes change from alarm occurrence indication mode back to normal mode 1 Press A SW3 SW4 more than sec 2 In case that un input state continues 30 seconds 3 Alarm Data Indication Function The Last Saved Data before Alarm Occurrence Regarding the latest alarm the last sensor data before stop can be indicated while alarm occurrence is indicated Data is indicated by the following operation during the latest alarm occurrence indi
172. odify the units Modification or the use of unspecified parts may cause failure electrical shock and fire Maintain the units on firm ground case of fire turn OFF the main power Use oil or distinguish for electrical fire in fire control not touch hot temperature parts It may cause burn Consult with a distributor or qualified service person in case of disposal of unit since refrigerant should be pull out correctly The law prohibits indecent discharge of refrigerant in air pag 29 SMGB0003 rev 0 01 2007 Electrical Wiring Diagrams 3 Electrical Wiring Diagrams This chapter shows the electrical wiring diagrams for Chiller AG2 of Hitachi HITACHI Inspire the Next 3 Electrical Wiring DiagraM ocooocicnnicnniccncccnccnnconnonnnonnnnnnononnconnnonnnnnnnornnnnnnaronannnnnonos 31 3 1 Power Wiring DIO Mi a EEr pa aae EE 32 3 1 1 Model R C H UE 40 G0A 2 siii iia 32 3 1 2 Model R C H UE TOO TODAG2 aic ette aput tan n Ru Rel et 4 ia 33 3 1 3 Model R Z H UE 180 240 G2 iei iria knee het t ek aras cake Cita tena 34 3 1 4 Model ISICIFDUE 280 920 12 eon Hua Re ii 35 2 19 Model 350 400 92 csm 36 3 2 Power Wiring Diagram nnne nnn nnn 37 3 2 1 Model R C H UE 40 400 2 37 2 9 Bueciutcc6mm
173. ody cleaning 3 a eS Fal 6 Cleaning circuit installation Chiller unit operation is stopped Circulation pump operation is stopped Water inlet outlet connection is removed from the water circuit of unit and another circulation circuit used the acid proof pump is installed separately from the water circuit Confirmation of circulation circuit An acid proof pump is run while water is put in the tank for cleaning and confirm if water is not leaked from the cleaning circuit If cleaning hose is fixed if devices installed around the unit is not contaminated by cleaning liquid possible to overflow from the tank if air is not clogged if there is no strange noise Cleaning Drain off the water in cleaning circuit Adequate quantity of cleaning agent is put in the tank for cleaning and while diluting it operate the acid proof pump so that the diluted cleaning liquid circulates in the circuit Perform the circulation cleaning during prescribed time it is determined in each cleaning agent although it differs from liquid type or density It is necessary to change the cleaning time according to the dirtiness SMGBO00083 rev 0 11 2006 Maintenance HITACHI Inspire the Next E Step 4 wastewater treatment Acid proof pump operation is stopped Wastewater is put to the tank for wastewater collection Water is put in the tank for cleaning and the tank is washed with pump Water use
174. oggin of temperature between piping exists ESI Check to make sure that no difference of temperature before and after of Replace check valve check valve exists Check the difference of temperature between inlet and outlet of chilled J Increase water flow water Clogging of Water Strainer Replace or clean the strainer Check the rotation direction Repair to the correct direction gt Evacuate the air Open the air vent valve Clean water cooler Excessive dust in air side heat exchanger Remove it Inlet or outlet of air side heat exchanger is clogged Shortage of Service Space for chiller Secure service space uni Reverse Rotation of Fan Motor Correct the wiring of fan motor Air Short circuits in Chiller Unit Repair short circuit Another Heat Source around the Chiller Unit gt Remove heat source Check cycle temperature Charge the correct quantity Turn off the unit and check the relation Evacuate and charge between water temperature and gt refrigerant again pressure Check clogging gt Remove clogging Check clogging Check to make sure that no difference of temperature before and after strainer exists Replace strainer Check to make sure that no difference of temperature before and after check 3 valve exists Replace check valve Check pressure cycle temperature ps Replace compressor and current Adjust t
175. oil cannot be used therefore pay attention not to be mixed with others at maintenance The hygroscopicity is the same as a conventional Icematic SW220HT of Castrol therefore moisture maintenance is not changed Icematic SW220HT as well as Ferreol UX300 are ester series refrigerant oil therefore open to the ambient air as short as possible pag 161 Name Fluid point kinematic viscosity 40 C water saturation Model RCUE40AG2 RCUE50AG2 RCUE60AG2 RCUE70AG2 RCUE80AG2 RCUE100AG2 RCUE120AG2 RCUE140AG2 RCUE160AG2 RCUE180AG2 RCUE210AG2 RCUE240AG2 RCUE280AG2 RCUE320AG2 RCUES350AG2 RCUEA00AG2 RHUE40AG2 RHUESOAG2 RHUE60AG2 RHUE70AG2 RHUE80AG2 RHUE100AG2 RHUE120AG2 RHUE140AG2 RHUE160AG2 RHUE180AG2 RHUE210AG2 RHUE240AG2 SMGB0003 rev 0 11 2006 Ester series synthetic oil Ferreol UX300 of Japan Energy Below 20 C 250 310mm2 s Aprox 1600 ppm Reference Refrig Qty kg 8E041072 39 8E051072 46 8E061072 41 8E071072 48 8E081072 64 8E101072 92 8E121072 82 6 8E141072 96 8E161072 128 8E181072 123 8E211072 144 8E241072 192 8E281072 192 8E321072 256 8E351072 240 8E401072 320 9E041072 39 9E051072 46 9E061072 41 9E071072 48 9E081072 64 9E101072 92 9E121072 82 9E141072 96 9E161072 128 9E181072 123 9E211072 144 9E241072 192 Maintenance HITACHI Inspire the Next Organic materials rubber teflon used in compressor and control device use compatible parts with Freol UX300 and R407C The pr
176. ompressor Open at a certain degree Operation start Thermo OFF or stop E During super c J heat contro 3 O Opening degree for starting unload m Time Standby at 10 pulse Standby at 10 pulse Zero point adjustment at Power ON b Zero Point Adjustment imaged figure If compressor is not stop over 200h 1 2 Re start in 3min S Superheat control O Thermo OFF x Thermo ON o 5 Y O Time Zero point adjustment during Thermo OFF Forced zero point adjustment If 24 h has passed since the last adjustment c Prevention Control for Discharge Refrigerant Gas Overheat imaged figure Compressor discharge gas refrigerant temp Td 107 C Opening of expansion valve Opening more if Td is over 107 C Re activation of Td control Release if Td is below 70 C Fix the opening if Td is over 100 C Td control Opening of expansion valve Time pag 80 SMGBO0003 rev 0 01 2007 Control system HITACHI Inspire the Next This series has a protection control to resolve abnormal status before reaching to the alarm status occurrence Control Name High pressure protection Low presssure protection 1 COOLING Low presssure protection 2 COOLING Protection of overheat of discharge gas temperature Prevention of overheat of compressor Prevention of decrease of evaporating temperature 1 COOLING Prevention of decrease of evapo
177. p 5 retries during 30 minutes only Retry Code corresponding fan is stopped automatic restart in 10 seconds No code indication indicated within the check mode Re operate Is motor operating No Are there any foreign Yes material within the fan SE Take off the foreign material No Check if connector on the fan module relay connector and PIN are OFF Connector is different from models Confirm it with operation circuit drawing Yes Is connector abnormal Repair it No Re operate Possible alarm cause is to detect excess current by head wind Use as it is since the product has no failure Yes Is motor operating gt Repaired No Replace fan motor y Re operate Is motor operating Repaired No No indication Replace Printed Circuit Board for Control or fan module pag 138 SMGBO0003 rev 0 01 2007 Troubleshooting Alarm code we 11 y l Alarm Stop Reason ee 14 1m m Fan No Communication is not performed during a certain period Alarm stop 3 retries during 30 minutes compressor stop automatic restart in 3minutes Is fan module No set correctly lt gt Yes Is fan module supplied power source Yes Is connector CN201 202 on the fan module correctly connected Check fan module pag 139 SMGB0003 rev 0 01 2007 Is fan interlock confirmation swit
178. p Therefore when removing the welding of expansion valve it is important not to remain the refrigerant between liquid outlet valve of air side heat exchange A and expansion valve 1 In case of the model with economiser With economizer Liquid outlet valve of air side heat exchanger A Ex valve Close m 10 pulse close gt lt QS To compressor From air side heat exchanger This flare should be removed Economiser before heating part ir 2 In case of the model without economiser The coil should be removed Liquid outlet valve of air side while refrigerant is being Applicable model heat exchanger A Without economizer Close A caution There will be a clearance between control value and actual value of expansion valve opening therefore zero point adjustment re input of power source should be realized This operation makes expansion valve open in spite of compressor stop by low pressure setting Compressor is started up e 3 Close outlet valve of air sic Operate chiller unit E heat exchanger 9 Remove the coil of ex valv y finished j pag 175 SMGB0003 rev 0 11 2006 HITACHI participa en el programa de certificaci n EUROVENT Los productos cumplen con las especificaciones del directorio de productos certificados por EUROVENT Hitachi Air Conditioning Products Europe S A Ronda Shimizu 1 Pol g Ind Can Torrella 08233 Vacarisses Ba
179. pae p ada A 12 FL A XL 6 s 0 099 96V 97 BB Tm En CINE bes 961 Es SZ 9544 Sr44 2 iu h acus 6c a N OA N Y NIN N 7 gt N EIA DAME IND co i IS gt eE ids vi BOL LIND X E PE NON SINO EB e HW e ba N S 1S 944 v V 65164 44 v 1vJd ind Olli Ly y 8 60117 TEE 38052 f 87 EE lt 8011 gt lt gt 806 aaa 6025 evt 28075 A A V hg ava 39309 G E tro HAS MaS Has Has T c SS yi VY NA NW 1 6 091095 SB xun H 5 1097 SS 6 T Hh pur lt lt oects 11 8 lt 0 9 gt fera lt ii died H3 lt 1 99 6139 L gt viel Orel 9651 gt pa m gt Mio WEE iso SEE EST VAL lt 899 gt gt 12894 cel MEI NV 90 7695 30 lt TEET gt phy lt OSET gt 745 lt 6ZE l gt 930 lt gt HOG 2509 0195 845 945 vdS CdS Vt LIN Ee A EE SIX08 1 P n AN CN LI LI LI LL 1 3 5 BNO LINO 5 XO 3 SHI HO HO HO HO EM EM X08 4 9 r1 X Y Y Y Y TT ROZIN 80 POCI N 6dS 145 5945 dS 145 1 vGel E lt gt 9 KOZEL gt eel HHE HHE ME 595582914 SST TING IN 1144 S A THEE Y
180. perating and stop Confirm if there is no oil leakage or bleed from the compressor Perform visual check by sight glass More than 3MO at 500V DC Apply current during compressor stop Touch and confirm if they have rubber elasticity Pay special attention to noise vibration and oil leakage etc Confirm if safety device and protection device See following function well maintenance criteria of Screw compressor for details Overhaul the compressor and check it according to the specialist advice Clean it spraying warm water less than 40 C See technical Confirm if they are within the criteria catalogue for details See technical Confirm if it is within the criteria catalogue for details Frequency of cleaning Confirm if high pressure is within the criteria differs depending on Perform the predetermined cleaning result of water quality or operation time If condenser is not used for intermediate or long period drain water At this time open also plug for draining water and for removing air Maintenance Check Item 3 Refrigerant Circuit Cont Cleaning Water flow water temp Water Cooler Drain water Water quality 4 way valve Operation Expansion valve Operation Mechanical Expansion valve Operation Electronic Strainer Clogging Solenoid valve Operation Stop valve Operation High pressure Operation switch 4 Electrical system Supply voltage Electricity in In
181. r Chiller RCUE 80 160 240 320 400 AG2 with 167 6 8 3 Refrigerant Cycle diagram of Hitachi Air to water Heat Pump Chiller RHUE 40 50 60 70 100 120 140 180 210 62 168 6 8 4 Refrigerant Cycle diagram of Hitachi Air to water Heat Pump Chiller RHUE 80 160 240 AG2 With 169 Overhaul OUR T a 170 Vacuuming Procedure 170 MOR A 170 SO OOPS oo e 171 Additional refrigerant InSertiON ccococcnncoccnnconcnccnncnnonncnnonnnnnonnnnnonnnnononononnannnnnnnnnnnnos 172 6 11 1 Confirmation of tank oo AAPP 172 6 11 2 Measurement device used for refrigerant inSertiON oooccccccccoonccnnnncnnnnnnonnnnnnnancnnnnnnnnns 173 6 11 3 Procedure for refrigerant insertion 173 6 11 4 Check of leakage 174 6 11 5 Caution at Replacement of Expansion 175 pag 149 SMGB0003 rev 0 11 2006 HITACHI Inspire the Next Maintenance 6 1 Maintenance criteria HITACHI Inspire the Next Check Item 1 General Noise Vibration 2 Cabinet Outside board
182. r1 Electrical Wiring HITACHI Diagrams Inspire the Next 3 2 Power Wiring Diagram FAN S lt oy e lt Cy A gt ec LO P SAM MIS Ly Ah d en O lo Heo C PL N TN N o Ho of 4 p oS OR OR o ES z t ES gen 3 N gt T E P pul Wen OO 4 E i gt T nidi NP S M 8 AN Fo os T 1 90 C A LM N o o e OR OR 97 pe 9 LX O _ E e VIV 5 CO gt lt T ZO NN c o Z C gt Li gt d lt L A lt D QA A gt p E C Le gt d Z 097 WY ae aN lo T hu OS Og o
183. range of capacity control 100 1596 Stop all models L control 5 seconds Starting unload control 30 sec before capacity control Prevention of excessive compressor re starts 3 minutes Prevention of compressors simultaneous start 1 minute delay Unit with more than 1 cycle Balance of each compressor running hours more than 1 cycle When unit current reaches to the setting value power supply capacity load is reduced Therefore unload operation is performed forcedly for some minutes 3 phase status is detected to avoid the operation in reverse phase or open phase before starting and during running of unit In case of momentary power failure 13mm seconds lt time 2 seconds and under 20 of power voltage unit is stopped and then is restarted when the voltage is back In case of power failure of over 2 seconds the units are restarted after power supply is back In case of long term power failure the units are restarted when oil heater has electricity for a certain period after the power supply is back The units are not started automatically if power failure happens during stop It is an optional setting by Dip Switch DSW1 pin2 Alarm is output for such operation errors that changeover from remote to local or from cooling to heating and wrong setting In case that operation order is input by remote controller when local operation is selected alarm is output as safety Forced capacity operation
184. rating temperature 2 COOLING Prevention of decrease of evaporating temperature 3 COOLING Anti freezing 1 COOLING Anti freezing 2 COOLING Protection of pressure difference Prevention of excess increase of warm water temperature Compressor Stop Conditions High pressure 2 6 Cooling only Low pressure 0 333 Heating Low pressure 0 314 Cooling only Low pressure 0 333 Heating Low pressure 0 314 90 sec Discharge gas refrigerant temp 2 130 C 1min Actuation of internal Thermo of motor for compressor Inlet refrigerant temperature of water side heat exchanger lt 4 5 3 sec Inlet refrigerant temperature of water side heat exchanger _ 55 10 sec Inlet refrigerant temperature of water side heat exchanger 6 5 C 3 sec Suction refrigerant gas temperature 2 10 sec Chilled water outlet temperature 225C High pressure low pressure 0 3MPa Warm water temperature 265 C pag 81 SMGB0003 rev 0 01 2007 Contents Hold after load down 10 second output When it is continued for 1 min hold after load down 10 second output Compressor stop retry code Cn P6 Re start in 3 min alarm 3 times in 30min Compressor stop retry code Cn P5 Re start in 3 min alarm 3 times in 90min Compressor stop retry code Cn P5 Re start at internal Thermo restart alarm 3 times in 60
185. rature Warm water outlet temperature C Cooling operation Heating operation A caution For installation and test run under low ambient temperature 7 like at the beginning NOTE of summer it is Fig 6 area need to be cleaned water side heat exchanger possible to decrease low pressure abnormally In such case heating operation should be run firstly and then cooling operation In case of air cooled heat pump pag 23 SMGB0003 0 01 2007 Test run H ITACHI Inspire the Next 2 2 4 Electrical consumption percentage Electrical consumption percentage is 100 in the following standard conditions at cooling and heating operation Cooling operation 50 Hz electrical consumption percentage cooling ee Air side heat exchanger inlet ambient DB 35 E Chilled water inlet temperature 12 120 40 C Chilled water outlet temperature 7 C E z lt O 110 E 35 C 30 C ag Fig 7 90 Electrical consumption percentage 80 70 Heating operation Air side heat exchanger inlet ambient DB 7 WB temperature 6 130 Warm water inlet temperature 40 C Warm water outlet temperature 45 C 120 110 Fig 8 Electrical consumption percentage Warm water outlet temperature C pag 24 SMGB0003 rev 0 01 2007 Test run 2 3 Restart of Test Run H
186. rce phase failure or reverse phase v Is printed circuit board for relay PCB connector R S T correctly connected Is the power source of connector R S T part phase failure or reverse phase Yes Phase Failure PCB Monitoring Position No 1 3 Cycle PCB I O R S T No 4 and No 5 Cycle PCB I O PCB R S T Reverse Phase Yes No Correct Phase pag 121 SMGB0003 rev 0 01 2007 HITACHI Inspire the Next Power Supply Wiring Check Connection repair Repair to correct phase Check printed circuit board for relay PCB Troubleshooting HITACHI Inspire the Next Alarm code 3 Activation of Freeze Protection Control 3 Alarm Stop Reason PCB Monitoring Position aware cue Inan PCB CPU PCB CN3 for inlet CN4 for No 1 cycle 2 C standard unit only cooling operation outlet CN6 for No 2 cycle outlet CN7 for No 3 cycle PCB PCN13 wiring is broken outlet 13 13 for 1 cycle unit or if alarm PCB I O PCB CN23Te2 for No 1 cycle protection 5 detected in inlet water temperature PCB I O PCB CN23Te2 for No 2 cycle protection Thermistor or PCN13 wiring is broken C 1 13 C5 13 It is detected in outlet water temperature in more than 2 cycle units PCB I O CN23Te2 for No cycle protection PCB CPU PCB PCN13 Is connectors on the Plug correctly an
187. rcelona Espana ISO 9001 certificados por AENOR Espana ISO 14001 certificados por AENOR Espa a Hitachi Air Conditioning Systems Operation Shimizu shi Shizuoka ken Japan ISO 9001 certificados por JQA Jap n ISO 14001 certificados por JQA Jap n ils Hitachi Air Conditioning Products M Sdn Bnd _ Lot No 10 Jalan Kemajan Bangi Industrial Estate bh d d 43650 Bandar Baru Bangi Selangor Darul Ehsan Malasia MALAYSIA TT Certificaci n ISO 9001 Malasia a Certificaci n ISO 14001 Malasia HITACHI Inspire the Next SMGBOOO3 rev 0 01 2007 Printed in Spain
188. ring method custormer wiring terminal Wire as follows n n of compressor pag 57 SMGBO0003 rev 0 01 2007 4 HITACHI Inspire the Next Control System 2 Forced capacity control a Contents Compressor operation capacity is set forcedly through customer wiring terminals Order signal pattern and compressor operation capacity are shown as below Compressor forced operation capacity Normal operation HOLD LOAD DOWN LOAD UP Xa ON ON OFF OFF Xb ON OFF ON OFF b Wiring method customer wiring terminal O l Customer wiring Second water temperature setting 4 9 Second water temperature setting According to the day run night run or classification of load application temperature setting can be changed remotely Thanks to the two setting temperatures and the two control procedures for water temperature capacity control and full load or energy storage these can be combined to have the following possibilities 1 Air conditioning capacity control Air conditioning capacity control 2 Air conditioning capacity control Heat storage operation 100 0 3 Heat storage operation 100 0 Heat storage operation 100 0 Air conditioning temperature is set by rotary switch on operation PCB and heat storage temperature is set by using Aor V switch on indication PCB 7 segment Operation mode and setting Water temp Dip
189. rol is performed and performance is decreased 5 Stop temp Compressor is stopped at 6 C The inlet temp of that time is saved 6 When inlet temp becomes 2 C higher than that of at stop re start signal is output and unit is re started after at least 3 min guard 7 Control mode after re start is the same as listed before pag 52 SMGBO0003 rev 0 01 2007 Control system H ITACH Inspire the Next 4 3 Compressor control Compressor Control 1 Starting control 2 Time Guard 3 Sequential starting control Compressor control A Soiation control Starting control Time Guard and Sequential starting control These three controls are performed in the control circuit on PCB Aa starting control of screw compressor aL operation lasts 5 seconds at minimum load for 30 seconds Time guard function which limits the frequency of Run Stop when cooling heating load is small at minimum 3 minutes of stop time to avoid more than 6 ON OFF in one hour Sequential starting control which reduces the starting current of the unit Cycles start sequentially with a 1 minute delay between each one Finally all work together for 30 seconds before capacity control starts Run Stop order of compressor is modified in each Run Stop in order to balance the compressors operation time and unit life is prolonged Stop the compressor whose operation time is longest No 1 ON Compressor OFF No 2 gue Compres
190. s AP e EU O a 28 2 5 1 During product and electrical installation 28 Beh e pepe zio p NET m 28 2 5 3 During pasadas wins PEEL iiaa UR 29 o E o E e 29 pag 19 SMGB0003 rev 0 01 2007 Test run H ITACHI Inspire the Next 2 1 Check before test run Confirm there is no problem regarding chiller installation space and requirements See technical catalogue for more details Check the following items at the beginning of the season and before first test run pag 20 Exterior and SMGB0003 rev 0 01 2007 Confirm there is no damage in exterior and interior interior caused during transportation or at installation Remove foreign matters and dust and clean it Confirm individually if screw and washer are fixed well using screw driver or wrench Confirm visually if heat insulation tape and label plates are fixed well Drain pan Confirm visually if there is no clogging nor rust in drain In case of the rust arrange it painting Air side heat Check visually if there is no dust between fins In case of exchanger dust wash the part with fin cleaner Fan part Confirm there is no deformation nor any trouble in fan or fan protection net Confirm if fan spins smoothly Confirm if screws are not loosed especially check if shaft and runner are fixed Confirm if there is no strange noise
191. s of use work Remarks Take the shorter period items shall be added individually Year month to change or check min Remark Time 40 000 hr 3 000 hr 6 000 hr 24 000 hr Item is for air cooled 1 month 6 month 1 year 5 year 3 year Operation test of safety device and protection device 1 High pressure switch Q Check of lubricant oil and change it 2 Refrigerant oil 3 Suction gas strainer oil strainer Decomposition of compressor 4 Bearing o Rotor 6 thrust liner Change them at the same 7 Set of tooth lock washer tighten the nuts time as bearing 8 Set of PK O ring 9 Set of Teflon ring wore 2 part change Q part change if abnormality is detected in the check This table is applied in case that operation condition is good and operation record is fully equipped 06 Perform compressor check according to the compressor service manual and technical notice pag 152 SMGBO0003 0 11 2006 Maintenance HITACHI Inspire the Next 6 3 Maintenance of Water Quality This air conditioning device uses water as a heat source for cooling or as a media chilled water heat water for use of heat Therefore it is necessary to select suitable water and control it to maintain the quality and performance and avoid possible problems Serious failure of plate heat exchanger may stop the units function and cause high expenses for its repair Therefore it is indispen
192. s or closes smoothly Confirm if valve functions smoothly Confirm if it is activated correctly with the value of safety and control device setting in technical catalogue Pay attention to fluttering of contact parts at operation Supply voltage is as follows 10 rated voltage 10 rated voltage voltage for starting more than 8596 rated voltage More than 1MQ at 500 V Mega in every electrical devices Confirm if the terminal does not loose or coat of wire is not removed Confirm if they are installed correctly Confirm if the capacity of fuses is correct Confirm if there is no abnormal noise or sparks by switching ON OFF Confirm if it is correct apparently The interval of switching ON OFF is more than 3min Confirm if they are operated smoothly Confirm if they are operated correctly Confirm if they are operated smoothly Confirm if there is no abnormality apparently Maintenance HITACHI Inspire the Next 6 2 Maintenance criteria of Screw Compressor Classification Time and year Model Performance items Save of operation situation Daily check Every day pressure temperature voltage current value remarks etc Every 6 000 hrs Every one year Periodically check HIS air cooled Every 5 years Overhaul check of compressor and parts check 40 000 hrs Every 5 years Operation check of safety device protection device water cooled Lubricant oil According to purpose or condition
193. s state The valves or hose for charge should be specialised for R407C 1 Paining color is different from types of refrigerant And a mark stamped in inspection also serves for the confirmation of refrigerant Painting color n d R407C Brown 2 The refrigerant tank has two specifications as shown in the below In any case liquid refrigerant should be added The same structure as conventional tank Tank specialized for R407C lt no siphon pipe gt with siphon pipe Label attached m Siphon pipe a a If the edge of siphon pipe become above the superficies of liquid O refrigerant it should take gas out It is convenient to use manifold valve with sight glass to confirm if refrigerant is added in liquid state Do not add refrigerant while being stand It is possible to add refrigerant while being stand pag 172 SMGBO0003 0 11 2006 Maintenance HITACHI Inspire the Next Measurement device for R407C is not compatible with that for R22 due to the following reasons therefore do not divert them These devices should be controlled separately to avoid being mixed Measurement device Reasons Remarks Manifold valve Pressure proof criteria is different Material spec of packing is different question of deterioration Pay special attention not to use a hose for If R22 is mixed sludge is occurred due to charge for R22 the flow of mineral oil to devices which may cause a clogging o
194. sable to promote the maintenance and selection of water for the chiller installation Read the below criteria of water quality very carefully to avoid any troubles In case of using some chemical products for water treatment it is recommended to consult with manufacturers specialised in water treatment since characteristics of chemical agents may differ with product specifiactions Water to be supplied to the chiller should be running water clean water industrial water or groundwater Other special water like pure water cannot be used in the standard product The later table shows the guideline of water quality regulated by JRAIA Each criteria is set for water for cooling and for heating The compliance of this criteria is premised on the product guarantee Explanation of Main Items in Water Quality Maintenance hydrogen ion concentration pH is used as a measure to judge acidity neutral and alkalinity of water It is a big factor in taste corrosion purification effect in water treatment disinfection effect in chloride treatment water stain formation and other fields like analytic chemistry biochemistry etc The below figure shows an example of relation between pH 6 value and corrosion Penetration mm year 14 12 10 8 6 4 2 Relation between pH and corrosion of soft steel Electrical conductivity To know the outline of water quality it is effective to measure electrical conductivity This value is determined
195. sor OFF Stop the Operate the compressor Compressor whose Operate first operation time is longest pag 53 SMGB0003 rev 0 01 2007 Control System H ITACH Inspire the Next 4 4 Current limit control Unit has a function to perform automatically forced unload when the power consumption is over a certain set point When unit current detected by CT reaches to the setting value forced unload operation is performed for some minutes to reduce the power capacity load See the figure below Load is down until actual current value is 95 of setting value and then load down signal is output for 12 seconds to keep the load Current value and forced unload operation time are set on PCBa current limit setting Current limit setting Unit current o sme Release the actuation Set value 5 Lu seu ARO A AA D T min hour standard 30 m 4 Time Foreedunoad y Segment indication Cooling Ene Heating Lee Current standard setting value of each model is shown in the below figure Current limit control eu qu 907 SUL m 5 Decide the period to continue forced load g GA 9 down setting value x 10 min Units First id digit decimal Y High Pressure Cut Conf pump S 5 place X No
196. ssolved matter index 0 1 electrical conductivity 5 50mS m 0 2 electrical conductivity 50 150mS m B Temperature index Chilled water gt 2 4 Warm water gt 1 6 C Calcium hardness index log calcium hardness 0 4 D Oxygen consumption pH4 8 index log Oxygen consumption pH4 8 E pH value RSI 6 Possibility of line production 6 lt 7 Stable area RSI 7 Possibility of corrosion SMGBO00083 rev 0 11 2006 Maintenance HITACHI Inspire the Next Dissolved oxygen It is an oxygen gas dissolved in water and is a great factor to promote the corrosion Regarding copper corrosion possibility of corrosion is increased in dissolved oxygen volume of 5 15 and is decreased in greater or less value than that Remarks Oxygen consumption all hardness and calcium hardness If these values are greater line is likely to be produced and if they are fewer corrosion is likely to be caused In the guideline presented in the table only the upper value is limited which is based on an idea of prevention of line trouble and of that the corrosion can be judged by other method Therefore if there is no worry about line trouble it is better to keep these values high to prevent the possibility of corrosion Concretely in chilled and warm water if RSI is 677 5 there is no worry about line problem it is convenient to maintain the below value to prevent the corrosion Oxygen consumption pH4 8 mgCaCO l
197. stance correct Check water flow rate Check the Yes Yes temperature of Inlet and Outlet Check pump reverse rotation Check water strainer clogging Check printed circuit Check air mixing board for Relay PCB Check Chilled water thermostat setting value It shall be within the working range wore The below table shows the relation between Thermistor and alarm indication as well as connecting Printed Circuit Board PCB Abnormal Product Model Thermistor PCB Connector Code RCUE 40 80 AG2 Tome RHUE 40 80AG2 Outlet water outlet temperature Thermistor 1 PCB CN4 iH Outlet water outlet temperature Thermistor 1 CN4 DZ 4 Outlet water outlet temperature Thermistor 1 PCB CN6 RCUE 80 400 AG2 r 04 RHUE 80 240 AG2 LASTI Outlet water outlet temperature Thermistor 1 PCB CN7 DH PH Outlet water outlet temperature Thermistor 1 PCB CN4 L 5 1H Outlet water outlet temperature Thermistor 1 PCB CN6 pag 124 SMGBO0003 0 01 2007 HITACHI Troubleshooting Inspire the Next Alarm code Operation Error Setting Error Alarm Stop Reason Wrong setting is performed in Dip Switch on Printed Circuit Board or prohibited operation is performed No Yes Is alarm reset by stop Is setting of Dip Switch Check Printed Circuit correct Board for Operation PCB switch Yes No D Set Dip Switch correctly and turn the power source Yes Normal ON again Running No R
198. stics Ambient 5kQ A CA HA IS 2 x ENENES SEM CN T N 2 gt S ENSE 627 EERS pP el C m gt o br Xu LI e 2 NNNM E e e e e e e e e ON O 00 N LO lt CN 25 30 35 40 45 50 55 60 eoueisiseiJ JO SIWUEY Temp C pag 146 SMGBO0003 0 01 2007 HITACHI Inspire the Next Troubleshooting 5 4 3 Thermistor temperature characteristics Discharge gas temperature 4 4kQ 140 o O AO IHRER LEER DLL j HELLE gt ee 4 LLL 5 s g 9 B8 8 e c LO 100 120 700 OM eoueijsisai 10jsiuu9u Temp C pag 147 SMGB0003 rev 0 01 2007 Maintenance an This chapter describe the procedure of the maintenance of the Air cooled water chillers 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 6 11 OO 149 Maintenance criteria nad TT OT Do 150 Maintenance criteria of Screw 152 Maintenance of Water
199. sulation resistance general Connection of electrical wire Earth wire Fuse Magnetic contactor Auxiliary relay Electrical component PCB Operation SW Transformer pag 151 Check Frequency once season A N once season once month once season once month once season once month once month once month Once month A N once season once season once season once season once season once season once season once season once season SMGB0003 rev 0 11 2006 HITACHI Inspire the Next Criteria procedure Remarks Frequency of cleaning differs depending on result of water quality or operation time Adjust them so that standard operation pressure See technical is kept catalogue for details If the water cooler is not used for intermediate or long period drain water in the heat exchanger of also water water side pipes Perform the predetermined cleaning See technical Confirm if it is within the criteria catalogue for details Confirm if switching coolingheating is performed Only for air cooled smoothly heat pump type See technical catalogue for details Confirm if low pressure changes smoothly by turning adjustable screw Touch it to confirm if it functions correctly when zero reset is performed automatically just after power ON Confirm if there is no pressure difference inlet and outlet of strainer Confirm if valve open
200. sure Cut oocooccnccocccccncccconcnncnnnnnononcnononcnnnnncnonancnonancncnnrrnconrnnennninnnos 69 4 14 Antifreeze control in winter ococoocccocnncccnncncnccncnconencnnnnnnnnnnnnnnnnnnnnnnnnnnrnnnnrnnnnnnnnrnnnnrnnnnnnnnnnnnnnnenaninancns 69 4 15 Saving energy priority mode silence priority mode night shift only cooling 70 4 16 Defrost only air cooled heat pump type cccooooccncccoccncncncccnnconocccncnnnnnnnonnonnnnnnnnrnnnnnnnrnnnrnnncnnrnnnrrnnnnnanens 72 4 17 Thermo off selection function 75 A A 76 4 17 2 Electroni expansi n toas dt 78 Proteccion 81 49 SMGB0003 rev 0 01 2007 Control System 4 1 List of Main Control Function HITACHI Inspire the Next Item Automatic water temperature control 1 Starting control 2 Time Guard Compressor 3 Sequential starting control 4 Rotation control Current limit control Reverse protection control Restart function from momentary power failure Automatic restart function from power failure option Operation error wrong setting prevention control Forced load control Second water temperature setting pag 50 SMGBO0003 rev 0 01 2007 Contents Outlet water temperature of water side heat exchanger is detected by thermistor and the position of compressor slide valve is controlled continuously The
201. t first it is necessary to set U2 in 7 segments pushing the SW3 and SW4 at the same time in Operation PCB PCB during 3 seconds 7 segments 1 is the priority number 0 1 or 2 that you can select following next point For modifying X value is necessary to push during 1 second SW3 SW4 of Operation PCB PCB depending if you want to increase DSW3 or decrease DSWA the priority number 4 Push at the same time DSW3 and DSWA for seconds for fixing at U1 the corresponding priority number established before in U2 5 Switch OFF the power supply in the Electrical Box switch OFF 6 Switch ON the power supply in the Electrical Box M I switch ON 7 Seeon the Operation PCB in the 7 segments the right configuration number according to the table on point 7 On the contrary repeat again all steps and select the right configuration number 8 Restore the initial setting DWS1 RSW8 3 Confirm the initial setting for these switches with the Technical Catalogue considering the options included in the model The standard setting values are the next DSW1 RSW8 DSW1 ON Oy 07 ey N 1 2 3 4 5 OFF NO wore In case of additional option DSW1 and RSWS can be different pag 102 SMGB0003 0 01 2007 Troubleshooting HITACHI Inspire the Next Flowchart at abnormal occurrence Abnormal occurrence in refrigerant cycle Could it be a temporal phenomenon
202. t in relay for compressor 60 HP 70 HP 80 HP Prevention control for freezing Prevention control for suction gas decrease Internal Thermostat for Compressor Prevention control for overheating of discharge gas Fusible plug Safety valve Fuse for operation circuit Safety valve is installed in all models pag 96 SMGBO0003 rev 0 01 2007 HITACHI Inspire the Next Activation value 2 74 MPa re start manually 0 314 MPa Electron control 0 049 MPa Electron control 2 74 MPa re start manually 0 049 MPa Electron control 55 A 60 A 85A 90A 2 C Electron control 2 C 115 C 140 C 72 C 3 0 MPa 10 5 Troubleshooting Automatic operation device HITACHI Inspire the Next The value of automatic operation device is set as follows Item unit Time guard Min A switch Sec Relay for only starting control Staring unload Sec Sequential starting Note 2 ln Mores 1 It should be normally over 3 min Setting value Remarks Variable 30 sec 10 min standard value 3 min Note 1 Electron control 30 2 In all chiller units there is a timer which prevents compressors starting at the same time Indication in the segment Status of unit and activation of the different protection devices are indicated on the display This indication helps to make a diagnosis about the unit indicating if it is running well and it can help to solve different
203. te is indicated in every cycle Protection control is assigned in 7 segment Control under activation is lighted example in the left side No 1 cooling operation and Td control under activation Starting capacity control Silence mode Pd control Night Shift mode Ps control Td control Pressure Liquid bypass control difference i control Trcontrol Unload control by outlet temp detection of back Current limit control side In case of 2 cycles C2 FC Fan control state and order frequency are indicated in every cycle example in the left side Fan No 2 and No 4 of No 1 cycle are under retry Fan No 1 is under stop by abnormality other fans are under operation with 44 an control state 4 Fan number ARO stop Light the position correspondent to the fan In case of 2 cycles C2 FC Indication of ROM NO ex 239 The following operation makes change from check mode back to normal mode 1 Press A SW3 more than 3 sec 2 In case that un input state continues 1 hour pag 105 SMGB0003 0 01 2007 Troubleshooting HITACHI Inspire the Next Alarm occurrence data Alarm occurrence data is indicated by pressing A SW3 W SW4 on PCB It is possible to do during stop operation Mode should not be shifted during alarm occurrence CHECK A V Flicker alternately No 1 No 2 E E CHECK RUN RUN POWER O ON OFF A Y Normal indication State The latest alarmc
204. ter Inlet Outlet Temperature 12 7 C Condenser Inlet Air Temperature 35 C page 14 SMGB0003 rev 0 01 2007 Product range and specifications MODEL Cooling Capacity Total Power input COP Height Outer Dimension Width Depth Cabinet colour Net weight Compressor type Models Quantity Oil heater Capacity control Water cooler type Condenser type Fan Motor pole Quantity Refrigerant type Flow control Number of independent circuits Quantity of refrigerant Cil type Water pipe connection Control system Chilled water outlet temperature Condenser air inlet temperature Permissible water pressure max Safety and protection devices Power suply 7 kW kW mm mm mm Kg Inch De PC MPa RCUE280AG2 239 2 3 0 2 430 1 900 10 250 6 750 60ASC Z 150x4 24 192 RCUE320AG2 824 278 2 3 0 2 430 1 900 10 250 RCUE350AG2 890 299 0 3 0 2 430 1 900 12 750 Natural Grey 7 000 8 450 Semi Hermetic screw type SOASC Z 4 150x4 60ASC Z 5 150 5 Continuous Capacity Control Brazing Plate Type Multi Pass cross finned tube 24 30 R407C Factory charged Electronic expansion valve 4 256 3 Victaulic 4xInlet 4xOutlet 5 240 JAPAN ENERGY FREOL UX300 Ester HITACHI Inspire the Next RCUEA00AG2 1030 347 8 3 0 2 430 1 900 12 750 8 750 60ASC Z 150x5 30 3
205. the European Standard EN12055 Chilled Water Inlet Outlet Temperature 12 7 C Condenser Inlet Air Temperature 35 C 2 The nominal heating capacities are based on the European Standard EN12055 Heated Water Inlet Outlet Temperature 40 45 C Evaporator Inlet Air Temperature 6 C WB page 18 SMGB0003 rev 0 01 2007 Test run H ITACHI Inspire the Next 2 lest run This chapter describes the procedure of test run of the Air cooled water chillers and the Air to water heat pump chillers e 19 Be Check Dorore A 20 o A Pe Pe PP e 20 2 12 Remngerant SIN rosca lla Noe 20 2 Sa e e e o OO A 21 22 2 2 destrun method and check tx reus ennai aa Pra ke S de di de 22 before A E e e Pr 22 2 2 2 Cooling operation low pressure high pressure nnn nnns 23 2 2 3 Heating operation low pressure high 23 2 2 4 Electrical consumption percentage 24 Lx o e 25 2 3 1 Check of high pressure switch cooling operation occccccccoonnconccnnnonnconnnnnonancnnnnnnnonnnnnnnnnnonanrnnnnnnnraarennoss 26 2 3 2 Check of low pressure cut control eorr as 26 2 0 0 Temperature COMMONGK MN E t 26 2 3 4 Check of 26 2 4 Instruction at AP EE o D Um 27 25 Warning A
206. to connect an operation PCB PCB and to the corresponding Control It means that in case of a CHILLER Electric Box with 5 cycles it is necessary to connect an additional operation PCB PCB and PCB to establish the right priority configuration in this subsidiary control PCB PCB Next drawings shows the controls required for this procedure PCB Seven Segment n 1 Seven Segment n 2 No 1 No 2 RUN RUN CHEK POWER ON OFF A NY E LL JL JL SWA SW3 pag 100 SMGBO0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next PCB e 25 1 o 26 l CNR High Pressure Cut Conf pump operation ECN 0 1 No 2 SW9 5 10 E E ption A Uu 5 Chilled Water Temperature Setting Worm Water Temp Setting 5 2 2 2 E T RSW4 T m 0 0 0 0 co d cres Ber Tees Se El Oe UNES fou dE U E le US Bs
207. to re start the unit by optional function If restart function after power failure is not selected the units are not re started in spite of ending the power failure In that case the units should be started according to the operation start process failure In momentary power failure all settings are saved so after 3 minutes time guard unit is run automatically with the same operation mode as before the power When this function is valid even in spite of over 2 seconds power failure units are run automatically with the same operation mode as before the power failure after delay time guard To be valid this function DSW1 pin 2 on PCBb shall be ON Momentary power failure 13 m s 2 sec under 160V lt gt wore In case that power failure occurs during unit stop the units shall be stopped when power supply returns pag 56 SMGB0003 0 01 2006 Time guard S DSW1 Option A MIL Power failure over 2 sec In case that function of restart from power failure is Ed selected 3 min 4 4 Time guard elected by Dip Switch HITACHI Control system Inspire the Next 4 7 Operation error wrong setting prevention control 40 40 Operation error wrong setting prevention control 40 40 Alarm is output in the following cases 1 Operation error While the unit is stopped there is a input including external Thermo signal from the remot
208. trol and Compressor Operation Hour Meter 3 N 380 415V 50Hz The nominal cooling capacities are based on the European Standard EN12055 Chilled Water Inlet Outlet Temperature 12 7 C Condenser Inlet Air Temperature 35 C page 12 SMGB0003 rev 0 01 2007 RCUE70AG2 178 59 8 2 98 2 430 1 900 2 750 1 760 60ASC Z 150 48 Product range and specifications MODEL Cooling Capacity Total Power input COP Height Outer Dimension Width Depth Cabinet colour Net weight Compressor type Models Quantity Oil heater Capacity control Water cooler type Condenser type Fan Motor pole Quantity Refrigerant type Flow control Number of independent circuits Quantity of refrigerant Cil type Water pipe connection Control system Chilled water outlet temperature Condenser air inlet temperature Permissible water pressure max Safety and protection devices Power suply 2 kW kW mm mm mm Kg Inch uo De MPa RCUE80AG2 206 69 6 2 96 2 430 1 900 2 50 1 820 60ASC Z 1 150 1 64 3 Victaulic 1xInlet 1xOutlet Reverse Phase Protection Fuse and Thermal Relay for Compressor Internal Thermostat for Compressor Compressor Oil Heater Fuse and Internal Thermostat for Fan Motor Control Circuit Fuse RCUE100AG2 RCUE120AG2 260 312 85 4 104 5 3 04 2 99 2 430 2 430 1 900 1 900 4 050 4 050 Natural Grey 2 830 3 000
209. tton is set on PCB for every cycle number Operation order to pump is output automatically by chiller in order to avoid freezing due to the decrease of chilled water temperature during unit stop in winter It is to keep high pressure at low values when ambient temperature below 30 C Since fan speed is increased it is a saving energy operation more than a silence operation It is an optional setting by Dip Switch It is focused on a silent operation of the unit reducing the fan speed Since the revolution number is reduced during night or mid term period efficiency is changed haraly in all around the year Silence is given priority over saving energy It is an optional setting by Dip Switch It is possible to switch from the remote controller by the external signal no voltage contact When fan full speed operation is not needed fan revolution number is reduced and low noise operation is performed Ambient temperature target function is valid under 30 C noise value 1 2dB changeover by no voltage a contact input There are two methods to judge Thermo OFF possible to select 1 Immediate Thermo OFF by Thermo OFF temperature 2 No immediate Thermo OFF if Thermo OFF temperature continues for 3 minutes however if outlet water temperature is out of the range it will be immediate Thermo OFF Control System H ITACH Inspire the Next 4 2 Water control 4 2 1 Automatic temperature adjustment
210. ty control Water cooler type Condenser type Fan Motor pole Quantity Refrigerant type Flow control MODEL Height Width Depth Number of independent circuits Quantity of refrigerant kg Oil type Water pipe connection Control system Chilled water outlet temperature Condenser air inlet temperature Permissible water pressure max Safety and protection devices Power suply 2 kW kW mm mm mm Kg Inch e ue MPa RCUEA0AG2 112 36 4 3 08 2 430 1 900 2 150 1 430 40ASC Z 150 39 Reverse Phase Protection Fuse and Thermal Relay for Compressor Internal Thermostat for Compressor Compressor Oil Heater Fuse and Internal Thermostat for Fan Motor Control Circuit Fuse RCUESOAG2 130 42 7 3 04 2 430 1 900 2 150 RCUE60AG2 156 523 2 98 2 430 1 900 2 150 Natural Grey 1 470 1 560 Semi hermetic screw type 40ASC Z 1 150 Continuous Capacity Control SOASC Z 1 150 15 100 Brazing Plate Type Multi Pass cross finned tube 4 0 38 8 4 R407C Factory charged Electronic expansion valve 1 46 JAPAN ENERGY FREOL UX300 Ester Victaulic 1xInlet 1xOutlet 1 41 Micro processor control 10 Option 5 15 15 46 1 0 High Pressure Switch Low Pressure Control High Pressure Relief Valve Discharge Gas Temperature Control Suction Gas Temperature Control Freeze Protection Con
211. ue See the diagram abbreviations description at the end of this chapter pag 39 SMGB0003 rev 0 01 2007 HITACHI Inspire the Next Electrical Wiring Diagrams 3 4 Input Output PCB PCBd ao p UM ss N gOd P82d Gi 150 lt LSC gt 3809 91 825 o N 5 3 0 7 a RESIS Sl VVVIY VN N i 9139 alla x S 5 BE EL a LPBOd GUISO q 1230 J m p O d xe QE VIV N 2 2 amp amp N d un ennt syun se ofo 7 9 EM Wiad J 5 E z amp k o un ajoXo IIVI3Q J WHI ZUOMIN PHL QN
212. ur and non stop operation time is over 5 minutes Confirm Confirm if there is too much Caution in mid term frost Confirm if there is no strange activation like noise spark or chattering If it needs to adjust it with water volume adjust it in the discharge side of pump Re check if there is no dust nor foreign matters in strainer Test run H ITACHI Inspire the Next Cooling operation 1 Operate the unit in local operation mode 2 When High pressure cut confirmation test switch on PCB is pressed during local operation fan is stopped forcedly and high pressure is increased Then high pressure switch turns ON Alarm stop This confirmation switch is set in every cycle see fig 9 to restart the compressor high pressure switch must be rearmed manually next to each compressor wore 25 E 26 2 See High pressure ON pump operatio m JA pool FON confirmation in 2 5 Wi EN chapter 4 Control 0k Option A 7 O functions for the perature Setting Water Temp Setting 00800 details am ewm Ae Oy 07 07 poros See eee ee A PERS Oe an e EEE LO E 2 o07 Sot Kou Rew E Us lt mn ao C DIO WI oe YP ag Fig 9 ORE e a 0 1
213. ure Permissible water pressure max Safety and protection devices Power suply 2 kW kW mm mm mm Kg Inch JE MPa RCUE160AG2 412 139 1 2 96 2 430 1 900 5 250 3 550 60ASC Z 150x2 12 2 128 3 Victaulic 2xlnlet 2xOutlet Reverse Phase Protection Fuse and Thermal Relay for Compressor Internal Thermostat for Compressor Compressor Oil Heater Fuse and Internal Thermostat for Fan Motor Control Circuit Fuse RCUE180AG2 RCUE210AG2 468 534 156 8 179 4 2 98 2 98 2 430 2 430 1 900 1 900 5 950 7 750 Natural Grey 4 450 5 070 Semi Hermetic screw type SOASC Z 3 150x3 Continuous Capacity Control 15 100 60ASC Z 3 150x3 Brazing Plate Type Multi Pass cross finned tube 0 38 8 12 18 R407C Factory charged Electronic expansion valve 3 123 JAPAN ENERGY FREOL UX300 Ester 3 144 HITACHI Inspire the Next RCUE240AG2 618 208 7 2 96 2 430 1 900 7 750 5 250 60ASC Z 150x3 18 192 Victaulic 3xInlet 3xOutlet Micro processor control 10 Option 5 15 15 46 1 0 High Pressure Switch Low Pressure Control High Pressure Relief Valve Discharge Gas Temperature Control Suction Gas Temperature Control Freeze Protection Control and Compressor Operation Hour Meter 3 N 380 415V 50Hz The nominal cooling capacities are based on the European Standard EN12055 Chilled Wa
214. ure resistance Is the Yes resistance correct Yes pag 127 Thermistor Outlet water temperature Thermistor 1 Outlet water temperature Thermistor 1 Outlet water temperature Thermistor 1 Outlet water temperature Thermistor 1 Outlet water temperature Thermistor 1 Outlet water temperature Thermistor 1 PCB PCB C1 PCB C1 PCB C1 PCB C1 PCB C2 PCB C2 HITACHI Inspire the Next Connector CN4 CN4 CN6 CN7 CN4 CN6 Evaporating Temperature Thermistor Abnormality PCB Monitoring Position No 1 Cycle No 2 Cycle No 3 Cycle No 4 Cycle No 5 Cycle No SMGB0003 rev 0 01 2007 PCB PCB CN27Tr2 PCB PCB CN27TI2 PCB PCB CN27Tr2 PCB PCB CN27Tr2 PCB I O PCB CN27Tr2 Plug Wiring Repair Replace Thermistor Replace printed circuit board for Relay PCB Troubleshooting IESS Alarm code rp Y1 nu n Alarm Stop Reason HITACHI Inspire the Next Discharge Gas Temperature Thermistor Abnormality PCB Monitoring Position Thermistor for discharge gas No temperature indicates abnormal No value No NO NO No Is Printed Circuit Board for Relay PCB connector CN24Td correctly connected Yes Disconnect connector and measure resistance Is the resistance correct Yes L Alarm code ru Alarm Stop Reason Thermistor for d
215. valve order opening pulse is indicated on the segment it is possible during stop operation Once pulses are displayed pushing again PSW1 enables you to check each cycles expansion valve position PWB VD PCB venio 2 Oral f venn PSW1 PSW2 Flicker alternately Press it more LXI ERR than 3 sec Segment for check Check switch PULSES OPENING 4 1 5 10 Thermo OFF 1 5 96 ES 112 Min running value 17 Light off by pressing O more than 3 seconds 656 Max running value 100 pag 107 SMGBO0003 rev 0 01 2007 Troubleshooting HITACHI Inspire the Next 9 2 Troubleshooting In the case of abnormality alarm LED on the control panel of unit and of remote control is ON and segment indication on the control panel is flickering To stop the unit put it into stop operation without power OFF Main switch Alarm occur Remote Control Run Indication OFF Segment Indication Abnormality Code Flickering One cycle continues running in more Alarm Indication Led ON pum Les IE Remote Control Alarm Indication ON Local Side Remote Side Stop Operation Yes Is abnormality code in segment indication confirmed y No Abnormality code is indicated by indication mode of alarm Occurrence Data y Abnormality code is indicated in the
216. vated Alarm stop 3 retries during 60 minutes Automatic restart after compressor stop and Thermostat recover Retry Code No 1 Cycle C1 P5 No 2 Cycle C2 P5 No 3 Cycle C3 P5 No 4 Cycle C4 P5 No 5 Cycle C5 P5 Yes Is alarm activated just after running No Activate after a while No Printed Circuit Board is normal Is 220 240V the voltage between connector PCN204 PIN1 and connector PCN 204 PIN3 on the Printed board for Relay PCB Yes Wiring Check pag 117 SMGBO0003 rev 0 01 2007 HITACHI Inspire the Next Activation of Internal Thermostat for Compressor PCB Monitoring Position No 1 Cycle PCB I O PCB PCN204 No 2 Cycle PCB I O PCB PCN204 No Cycle PCB I O PCB PCN204 4 Cycle I O PCB PCN204 No 5 Cycle I O PCB PCN204 D4 os D5 Check Printed Circuit Is 220 240V the voltage Yes between connector PCN204 PIN1 and connector PCN 204 PIN3 on the Printed Circuit D Board for Relay PCB No 7 Wiring Check breaking of wire wrong wiring Excessive or short power source voltage Interphase of power source voltage is imbalanced Compressor motor is locked Expansion valve opening check Insulation of compressor motor is lowered Troubleshooting Alarm code rn E n EN UN Alarm Stop Reaso
217. vated in 3 ELE COOLING minutes after running E imm uh E Clogging of air side heat exchanger operation x Yes ND atea lt HEATING gt Shortage of Water Pump reverse rotation Expansion valve malfunction Water stain in water side heat exchanger Clogging of Water Strainer Is 220 240V the voltage No Wiring check between connector disconnecting wiring PCN203 PIN1 and error connector PCN203 PIN3 on the Printed Circuit Board for Relay PCBD Is 220 240V the voltage between connector NO PCN203 PIN1 and connector PCN203 PIN3 on the Printed Circuit Board for Relay PCBD Yes Check Printed Circuit Board for Relay PCBD pag 112 SMGBO0003 0 01 2007 gt Wiring Check Check Printed Circuit Board for Relay PCBD Yes Troubleshooting Alarm code Alarm Stop Reason Suction pressure Ps is less than 0 049MPa during 3 seconds electron control cooling and heating Is connector CN 29Ps HITACHI Inspire the Next Excessively low suction pressure PCB Monitoring Position No 1 Cycle PCB I O PCB CN29Ps No 2 Cycle PCB I O PCB CN29Ps No Cycle PCB I O PCB CN29Ps No 4 Cycle PCB I O PCB CN29Ps No 5 Cycle PCB I O PCB CN29Ps on the Printed Circuit Shortage of Refrigerant Gas Leakager Board for Relay PCB correctly connected No Wiring Check pag 113 Clogging of expansion valve Clogging of low pressure sid
218. water strainer Pump reverse rotating check Check the air mixing Check chilled water thermostat setting value Within the working range Shortage of refrigerant Gas leakage Clogging of low pressure pipe Clogging of expansion valve Malfunction of check valve Malfunction of expansion valve Troubleshooting Alarm code Alarm Stop Reason Suction Gas Temperature Ts is lower than 2 C during 10 seconds only cooling operation Alarm stop retries during 30 minutes Compressor stop automatic restart in 3 minutes Retry Code No 1 Cycle C1 P6 No 2 Cycle C2 P6 No 3 Cycle C3 P6 No 4 Cycle C4 P6 No 5 Cycle C5 P6 No Is the wiring of connector in the Printed Circuit Board for Relay PCB correct Yes Pull out connector and No measure thermistor resistance Is resistance correct Check Printed Circuit Board for Relay PCB pag 119 SMGBO0003 rev 0 01 2007 J9 HITACHI Inspire the Next Low Pressure Protection by Suction Gas Thermistor Ts PCB Monitoring Position No 1 Cycle PCB I O PCB CN25Ts No 2 Cycle PCB I O PCB CN25Ts No 3 Cycle PCB I O PCB CN25Ts No 4 Cycle PCB I O PCB CN25Ts No 5 Cycle PCB I O PCB CN25Ts Plug correctly and repair wiring gt Replace thermistor Yes Yes Check the water flow rate Check temperature of inlet and outlet Clogging of water strainer Pump reverse rotating check Check the air mixi

AIR COOLED WATER CHILLERS (COOLING ONLY AND HEAT

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