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Hoshizaki MRH/3 User's Manual

1. 340 430 440 440 340 HH 440 430 44 340 430 44 HUN 069 U9yIMS 11135 Id 65 NILLIS HOLIMS 416 Te WIH x A L aa ENS AS OL 1ndinO 1euuojsueJ lt Bere ier g 7 3n T ro 6 Hay El E GNO i 1 5909 ah MH _ DN 4 4 DI 1 31 pHs I k 3 A 4 al 7 4 Fr 7194 3 1 12718 i 8 eet 1 ig 3 c T g EE 1021402 NIA wa UOISPOBHL 1 r4 TL T 3002 40702 39 KM 650MRH 94
2. 01105 9 16 Service Diagnosis WARNING e The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Risk of electric shock Control switch in OFF position does not de energize all loads Use extreme caution and exercise safe electrical practices Moving parts e g fan blade can crush and cut Keep hands clear Before servicing the appliance move the control switch to the OFF position and turn off the power supply CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the appliance is serviced Make sure that none have fallen into the dispenser unit ice storage bin Make sure all food zones in the appliance and dispenser unit ice storage bin are clean after service The diagnostic procedure is a sequence check that allows you to diagnose the electrical system and components Before proceeding check for correct installation proper voltage per nameplate and adequate water supply Check CB using the steps in Control Board Check Check dip switch settings to assure that S4 dip switch 3 4 7 8 9 10 and S5 dip switch 1 through 5 G CB are in the factory default position S4 dip switch 1 2 5 6 are cleaning adjustments and the settings are flexible For factory default settings see 1 De
3. 11 41 411 1 nennen nnne nnn nana 54 C Water Regulating Valve Adjustment water cooled model 54 EUIS Qc 55 VI Preparing the Appliance for Periods of Non Use 56 V ME o P su 58 VIII Technical Information 59 A Suecilicalion SITBBIS 59 D domno io eM H 59 2 KM 320MW H MORS U E 60 3 T r 61 4 62 KM 515MRH O O QMP TERIS 63 6 KM 600MAHI HER 64 ydus sine 65 8 KM 650MWkFElI z 1 la MP 66 9 KM 650MWH M 67 10 KM 650MRH MONDE 68 uS o wp ER mu A 69 Ta 70 13 ull EE E 71 14 KM 901MRH cU 72 B Performance Data 73 ul u uuu REA S REA 73 ZA KM 320MW Fl REKEREKE R RENERE TESSERE 74 75 4 deris MEN URTEIL ET 76 5 1 eM 77
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6. H i u 11195 HILIMS dl 1991 19 H WY 30 1 3 H 19 To 037 FL 3ud Iu Tu e Ji 3 H gi NN JC 1 1114 4 J H AOZE NN ES LIS 5 uj d 222 1 790 pu te 1 P E 1081 l m i 30 503 3E 1 11 L pl 33 Hn IY T 1 L LL NS 19013 1 e b gt gt Y Ou LOD NE 1231 im 1001 Js 11413113 i PH BIETET muet 140 3 301 3 3SV 87 b 650 KM 650MWH 901 KM 901MWH 22 82 225725 umno SISd z v8 I8 DOIN DISd IPPON inss uq uBiH H VW _ HIT H 105 111 HMW 106 1 3 ae 440 440 44 44 44 440 440 4
7. iW 1 MEE TENE 1 1 2 4 IM EI 1 09 00 92 KM 650MWH M 110 112 reo eunssaJg uBiH 340 140 340 440 440 140 339133 330 430 440440 059 13000 13 1 11135 HOLIMS dl 1113 HOLIAS dl OJ uO2 HE ele K Lo TAD lt gt m poe 99 i 1 I M DI wen a 1 _ VBH T 0 of 05534 T __ 11074 H B ime 1 4 5 1 02 NI VEN D J e y 1 1 3 MOTIJA 4 93 654 26 umno DISd 110 112
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10. lt gt MP TET M fa Woh 10H mE NA uel e 3003 80102 Sum pti 4 1 i 1 H Di P PRIM I TE 53 WA m mou T IN 1 T 1 d 1291002 o I T 1l 1081803 141 KM 901MRH3 2 Diagrams With Harvest Pump Timer Relays a KM 515MAH 10113 22 26 umno ISd 91 YOUMS inss id uBiH m 110 440 440 440 440 GIc Il 33 E 440340 440 440 HVNWSIS A a int B TICON 9 13 NILLES HOLINS di 1135 HOLI 30 1 HOLI 1 4 1 1 e AS OL 1ndino JeuuojsueJ O1 UOD 4 1 1 y 31 q e V T HIN ru pla 141 d ta Pas a 14 3i YM qe rS ES 11 1 RR 31 11 4 1 Da I
11. Fig 1 Control Cleaning If MBC switch still reads SEES 7 Press and hold the actuator paddle check for continuity across the wires of MBC connector When the actuator paddle is engaged MBC switch is open If closed check that the actuator paddle is not restricted Clean if necessary See II D 2 b Mechanical Bin Control Cleaning If MBC switch still reads closed replace MBC 8 Reconnect MBC connector to CB K4 connector then move the control switch to the ICE position Turn on the power supply 9 Check that CB green BC CLOSED LED is on 10 Allow the icemaker to cycle on Press and hold the actuator paddle CB yellow BC OPEN LED should turn on and the icemaker should shut down according to the chart below If it does not replace CB Cycle at Mechanical Bin Control Activation Fill Cycle 15 sec after activation Harvest Cycle At the end of the harvest cycle or up to 15 sec into the freeze cycle if activated at the end of the harvest cycle Freeze Cycle 15 sec after activation if activated at least 15 sec before the 5 min short cycle protection timer terminates Otherwise at the end of the next harvest cycle Legend MBC mechanical bin control CB control board 32 Mechanical Bin Control Cleaning Scale may build up on MBC Scale can cause the actuator paddle and magnet to stick In this case MBC should be cleaned WARNING CHOKING HAZARD Ensure all components fasteners and thumbscrews
12. securely in place after the icemaker is serviced Make sure that none have fallen into the dispense unit ice storage bin 1 Turn off the power supply 2 Remove the front panel and base cover then move the control switch to the OFF position 3 Clear any ice away from MBC 4 Disconnect MBC connector from CB K4 connector then remove MBC from the icemaker 5 Remove the actuator paddle from the switch mount See Fig 2 6 Wipe down MBC with a mixture of 1 part of Hoshizaki Scale Away and 25 parts of warm water Rinse the parts thoroughly with clean water 7 Reassemble MBC and replace it in its correct position Note If the magnet was removed for cleaning be sure to replace it in its correct position 8 Reconnect MBC connector to CB K4 connector then move the control switch to the ICE position 9 Replace the control box cover and base cover in their correct positions 10 Turn on the power supply to start the automatic icemaking process 11 Replace the front panel in its correct position Legend MBC mechanical bin control MBC Wire KM 901M_H 3 Harness white MBC Bracket Connector Switch Mount Actuator Paddle MBC Connector to control board K4 red connector Bin Control Bin Control Proximity Proximity Switch Switch Closed Open bin full calling for ice icemaker off or shutting down Magnet 2 Model Shown 901 33 E Float Switch Check a
13. F C F C IET 0 ECAN 9082 PRODUCTION 24 70 21 80 27 90 32 Ibs day kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG 100 38 PRESSURE 70 21 80 27 90 32 PSIG 100 38 TOTAL HEAT REJECTION FROM CONDENSER 8 300 BTU h 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 1 300 BTU h AT 90 F 32 C WT 70 F 21 C WATER FLOW FOR CONDENSER 49 gal h AT 100 F 38 C WT 90 F 329C PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 76 5 515 APPROXIMATE AMBIENT TEMP EEE CFPC 70 21 80 27 90 32 Ibs day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG 10
14. F 5 70 9 325 147 311 141 287 130 315 143 293 133 265 120 311 141 278 126 251 114 100 304 138 272 123 226 103 Crescent Cube 7 2 lbs 3 3 kg 360 pcs ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER galJ24HR gal 100 Ibs N A 90 70 70 50 800 6 9 750 5 5 51 18 4 117 35 9 22 x 27 318 x 30 5 16 560 x 695 x 770 mm DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN Stainless Steel Galvanized Steel Rear Net 123 Ibs 56 kg Shipping 153 Ibs 70 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE Hermetic Model ASE32C3E CAA Air Cooled Fin and Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 1 Ib 4 3 oz 575g High 467PSIG Low 210PSIG BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch LOW WATER PROTECTION ACCE
15. L OL sinus sues ging Dal oN BAS 99 ging 291 9809 998 OL UIM pue L 4 5 y HO Heu 4 p4eog 3 15 2 Control Board with Harvest Pump Timer Operation Alquu sse l l d y JO pis no eui pue 19 eM 19 UI AM eui pinbii ATT 10U A9H uonisod ur peoejd SI OJ UOO BU U UA 116189 JOU ejejduioo Burzniues pue Jaye Buiueej 9501 lON 1 y JO pue episino y pue uedo eA eA 991 U91IMSS 12064
16. NOTICE Factory set for proper operation Do not adjust Adjustment outside of the factory default setting may result in damage to the appliance Depending on the harvest pump timer setting the pump motor either stays off or is energized the last 50 seconds of harvest When the pump motor is energized water circulates over the evaporator The harvest water valve is open during harvest for a maximum of 6 minutes or the length of harvest minus 0 or 50 seconds determined by the harvest pump timer setting whichever is shorter When 54 dip switch 7 is in the on position and harvest begins X11 and X10 relays energize A latching circuit is created through the X11 and X10 relays For further details see VIII C Wiring Diagrams 50 sec before harvest termination LED 4 turns off inlet water valve and X11 relay de energize X10 relay remains energized through the latching circuit Next LED 3 turns on and control board K1 connector pin 5 DBU wire energizes energizing the pump motor for the last 50 sec of harvest G Control Board 54 Dip Switch Setting Pump Motor Time see or 6 Factory Use 54 switch 8 Factory set for proper operation Do not adjust This must be left the factory default position 7 Freeze Timer 54 dip switch 9 10 Adjust to proper specification or the icemaker not operate correctly The freeze timer setting determines the maximum allowed freeze time
17. OPERATING CONDITIONS 208 230 60 1 3 wire for 115V 7 2 5 Min Freeze 104 F WT 80 F 15A 290 661 300 632 287 591 268 639 290 594 269 553 251 632 287 562 255 520 236 624 283 552 250 482 219 Crescent Cube 14 6 Ibs 6 6 kg 720 pcs N A 90 70 F 70 50 F 1290 5 51 1180 4 30 101 18 0 232 35 1 22 x 27 3 8 x 37 7 16 560 x 695 x 950 mm Stainless Steel Galvanized Steel Rear Net 169 Ibs 77 kg Shipping 200 Ibs 91 kg Permanent Connection Inlet 1 2 Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model RST61C1E CAV 202 Air Cooled Fin and Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 1 Ib 8 oz 680g High 467PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 65 8 KM 650MWH SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF IC
18. confirm WV de energized not leaking by HGV de energized not bypassing LLV and FM energize TXV and HM operate correctly WRV opens Comp is efficient and refrigerant charge is correct See VIII A Specification Sheet and VIII B Performance Data b Comp and FMR Diagnosis Comp and FMR de energize once freeze begins check that appliance has not shut off on HPS POWER OK LED off If so check 3 b HPS Diagnosis above If POWER OK LED is on check for 115VAC at CB K1 1 V or 9 V to neutral W If 115VAC is not present and LED 1 is on replace CB If 115VAC is present check for 115VAC at CR or MC coil If 115VAC is present check CR or MC coil and contact continuity Replace as needed If CR or MC is ok check Comp external overload start relay and start and run capacitors Next check Comp motor winding continuity If Comp is energized but evaporator is not cooling check for an inefficient Comp See VIII B Performance Data If Comp is energized but FMR is not check for 115VAC at the FMR junction box If 115VAC is not present check icemaker wiring connections If 115VAC is present check for voltage at condenser unit If 115VAC is not present check field wiring connections If 115VAC is present check FMR capacitor motor winding and fan blade for binding c WV and HGV Diagnosis If WV is energized check for 115VAC at CB K1 6 O to neutral W If 115VAC is present after PM energizes replace CB If 115VAC is not
19. internal timer check A beep occurs when the control switch is moved to the ICE position The red POWER LED indicates proper control voltage and remains on unless a control voltage problem occurs The green LEDs 1 through 4 energize and sequence from initial startup as listed in the table below Note that the order of the LEDs from the outer of the control board is 1 4 3 2 Sequence Ste LED Energized Time LEDs are On i Components Min Max Avg _ 1 Minute Fill Cycle 4 wv Harvest Cycle Freeze Cycle Comp FM FMR PM 5 minutes freeze timer 30 to 35 minutes LLV setting Pump Out Cycle Comp FMR HGV PM 10 seconds 20 seconds pump out timer WV setting The built in safeties shut down the icemaker and have alarms as listed below No of Beeps 1 High Evaporator Temp Check for harvest problem stuck HGV or relay hot temperature gt 127 F 53 water entering icemaker or shorted thermistor 2 Harvest Backup Timer Check for open thermistor HGV not opening TXV or harvest gt 20 min for two LLV leaking by low charge or inefficient Comp or WRV cycles in a row leaking by 3 Freeze Timer Check for FS stuck closed up WV leaking by HGV freeze gt freeze timer setting leaking by PM not pumping not feeding properly for two cycles in a row LLV not opening low charge HM not bypassing or inefficient Comp To reset the above safeties press the
20. reu 9 5 Part Number OK LED red lights when black Connector Float Switch 10 5VAC is supplied i to K2 connector R36_ ac 1 8 water level Relay LEDs u SE 8 ollas Microprocessor 4 indicate which amp l amp I a control board revision relays are energized _ s level indicated on label and which K1 side of relay connector pins are 9 lo energized 823 ate S e K1 Connector LED 2 X2 Relay iar xu Pins 1 through 10 LED 2 on E 1 9 Magnetic Contactor or K1 Connector Pin 2 ej x99 25 oe wh eer Compressor Relay LED 2 off e mi ote 2 Hot Gas Valve K1 Connector Pin 3 j R2 aja 3 Fan Motor oR 8 uM Liquid Line Valve LED 3 X3 Relay m 77 0 218 4 Pump Motor icemaking LED 3 Ji E 242 5 Pump Motor pump out 1 5 R SR 6 Inlet Water Valve LED 3 off SR47 m NC 7 10 Component Power K1 Connector Pin 4 42 Supply energized in freeze Cete ig pe R6 _ 8 LED 4 Relay K1
21. 2 476 1soAJeH Z lnullN I l 14 91945 ee 13W11 1 041002 lt P lonuoo 281 jeorueuoeu 3glN Jo Q31 N3dO 98 uo 231 1038010 98 uo 31 28 1oyenioe pezi amp 1eue ep sjueuoduioo Jo q31 Q038019 9919 pesop JAN Ilv senunuoo q31 N3dO MOJA soyenjoe uedo JAN uoneiedo BJOAD L OL 1seAJeu 1xeu BU pue y 1e esiweuio uonoejoud o 2 1104 UIW G eui 9 0 4 008 s 1S 9 Jaye 295 gL 9 9 2 929944 e ejofo 15 eui jo pue eui ezeeJj 99S G dn 10 2 BY JO pue y 1y 9 9 2 1S9AJeH AD NUL T Jaye 295 ye sugs 2 y 5 umopinys pue 9497 9 JexXeulo IIn3 1 5 eouenbes sjueuoduioo 98 1 291 Dg 991 9 9A2
22. 730 5 2 730 5 0 57 16 8 103 29 4 528 157 327 93 22 x 27 3 8 x 30 5 16 560 x 695 x 770 mm Stainless Steel Galvanized Steel Rear Net 123 165 56 kg Shipping 153 Ibs 70 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe Pressure Regulator Thermostatic or Mechanical Bin Control Hermetic Model ASE32C3E CAA Water Cooled Tube in Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 1 Ib 0 8 oz 486g High 427PSIG Low 210PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 60 3 515 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W KWH 100 Ibs WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTR
23. Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model RST55C1E CAA Air Cooled Fin and Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 1 1102 765g High 467PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 64 7 650 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 Ibs WATER 24 gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED
24. present replace WV bypassing If HGV did not de energize check for 115VAC at CB K1 2 P to neutral W If 115VAC is present after PM energizes replace CB If 115VAC is not present replace HGV bypassing 20 Diagnosis Confirm water is flowing over evaporator from not WV If PM de energizes once freeze begins check for 115VAC at CB K1 4 R to neutral W If 115VAC is not present replace CB If 115VAC is present and PM is de energized check for 115VAC at control switch 5 R to neutral W If 115VAC is present at CB K1 4 R and not at control switch 5 R check control switch continuity between 5 R and 4 R Replace as needed If 115VAC is present at control switch 5 R to neutral W check PM capacitor and motor winding continuity e FM and LLV Diagnosis If FM or LLV does not energize check for 115VAC at CB K1 3 BK to neutral W If 115VAC is not present replace CB If 115VAC is present For FM check capacitor motor winding and blade for binding For LLV check coil voltage and continuity f Refrigerant Pressures and Diagnosis evaporator is still not cooling check refrigerant pressures See VIII B Performance Data Next check HM operation If refrigeration pressures are above HM setpoint and HM is bypassing replace HM Check TXV for proper operation Remove TXV bulb and hold it in your hand refrigerant low side pressure should rise place TXV bulb in ice wate
25. 1 through 10 LED 2 on 1 9 Magnetic Contactor or K1 Connector Pin 2 Compressor Relay LED 2 off 2 Hot Gas Valve K1 Connector Pin 3 ai Fan Motor R LED 3 Relay Line Valve LED 3 x 4 Pump Motor icemaking K1 Connector Pin 5 S 5 Pump Motor LED 3 off harvest pump timer K1 Connector Pin 4 3l pump out energized in freeze 6 Inlet Water Valve O 7 10 Component Power LED 4 X4 Relay K2 Supply K1 Connector Pin 6 8 LED 1 X1 Relay K1 Connector Pin 1 9 2 Connector Control Transformer 10 5VAC G Control Board Part Number 2A3792 01 43 B LED Lights Audible Alarm Safeties 1 Control Board At startup a 5 second delay occurs while the control board conducts an internal timer check A occurs when power is turned off The red POWER LED indicates proper control voltage and remains on unless a control voltage problem occurs The green LEDs 1 through 4 energize and sequence from initial startup as listed in the table below Note that the order of the LEDs from the outer edge of the control board is 1 4 3 2 esl ae ag 1 Fill Cycle 1 minute Comp FMR WV 3 to 5 minutes Comp FM FMR PM 5 minutes freeze timer 30 to 35 minutes LLV s
26. 115VAC is not present replace CB If 115VAC is present For FM check capacitor motor winding and blade for binding For LLV check coil voltage and continuity 27 f Refrigerant Pressures TXV Diagnosis evaporator is still not cooling check refrigerant pressures See VIII B Performance Data Next check HM operation refrigeration pressures are above HM setpoint and HM is bypassing replace HM Check TXV for proper operation Remove TXV bulb and hold it in your hand refrigerant low side pressure should rise place TXV bulb in ice water refrigerant low side pressure should drop A 10 to 15 pound pressure swing between warm and cold conditions indicate a good TXV If a 10 to 15 pound swing is not present replace 9 WRV Diagnosis WRV is factory set and generally no adjustment is required If WRV fails to open in freeze check for proper refrigerant pressures See VIII B Performance Data If refrigerant pressures are correct and WRV does not open adjust or replace as needed See IV C Water Regulating Valve Adjustment water cooled models h Freeze Termination Diagnosis After 5 min in freeze disconnect CB K5 FS connector 15 sec later appliance should switch out of the freeze cycle 15 second delay after FS opens before terminating the freeze cycle If appliance remains in freeze longer than 15 sec after FS removed replace CB If appliance switches with FS removed but would previously not swi
27. 2 FPT 3 8 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe Pressure Regulator Thermostatic or Mechanical Bin Control Hermetic Model RST55C1E CAA 202 Water Cooled Tube in Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R404A 0 Ib 14 8 oz 420g High 427PSIG Low 206PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Dispenser or Ice Storage Bin VOLTAGE RANGE AMBIENT TEMP WATER SUPPLY TEMP WATER SUPPLY PRESSURE 104 127 V 45 100 45 90 10 113 PSIG Note We reserve the right to make changes specifications and design without prior notice 62 5 515 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE P C BOARD CIRCUIT PROTECTION
28. 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes specifications design without prior notice 61 4 KM 515MWH SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER gal 24HR gal 100 Ibs WATER COOLED CONDENSER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 115 60 1 9 6 5 Min Freeze 104 F WT 80 F ___90 ___ Crescent Cube 10 3 Ibs 4 7 kg 480pcs N A 90 70 F 70 50 F 960 5 30 940 4 5 105 24 0 163 32 5 523 120 352 70 22 x 27 3 8 x 30 5 16 560 x 695 x 770 mm Stainless Steel Galvanized Steel Rear Net 151 Ibs 68 kg Shipping 175 Ibs 79 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Cond Inlet Cond Outlet 1
29. ALARM RESET button with the power supply on Low Voltage Red LED turns off if voltage protection operates 92Vac 5 or less The control voltage safeties automatically reset when High Voltage voltage is corrected 147Vac 5 or more Legend Comp compressor FM fan motor FWR fan motor remote FS float switch HGV hot gas valve HM headmaster LLV liquid line valve PM pump motor TXV thermostatic expansion valve WRV water regulating valve WV inlet water valve 45 Settings Adjustments switches factory set Failure to maintain factory settings adversely affect performance and warranty coverage For more information contact your Hoshizaki Service Center 1 Default Dip Switch Settings dip switches are factory adjusted to the following positions for both the E and control boards E Control Board without Harvest Pump Timer Operation E Control Board S4 Dip Switch No 112 3 4 5 6 7 s 9 10 b Control Board with Harvest Pump Timer Operation 54 Dip Switcnno OFF OFF OFF OF S5 Dip Switch Do Not Adjust G Control Board Switch 1 2 3 4 5 S4 Dip Switch 55 Dip Switch E and G Control Boards comm NN Only Freeze Timer 9 amp 10 Do Not Adjust Factory Use 8 Bin Control Selector 7 E Control Board 3 Refill
30. Comp FMR and PM continue FM and energize HGV and X10 relay de energize Appliance is held in freeze by a 5 min short cycle protection timer After 5 min timer terminates and FS opens freeze cycle terminates Note PM power supply switches from CB K1 5 in harvest to K1 4 R in freeze a Freeze Cycle Diagnosis Confirm Comp FMR and PM continue Confirm that FM and LLV energize Confirm WRV opens Next confirm HGV and X10 relay de energize During the first 5 min of freeze confirm evaporator is cooling If not confirm WV de energized not leaking by HGV de energized not bypassing LLV and FM energize TXV and HM operate correctly WRV opens Comp is efficient and refrigerant charge is correct See VIII A Specification Sheet and VIII B Performance Data b Comp and FMR Diagnosis If Comp and FMR de energize once freeze begins check that appliance has not shut off on HPS POWER OK LED off If so check 3 b HPS Diagnosis above If POWER LED is on check for 115VAC CB K1 1 V or 9 V to neutral W If 115VAC is not present and LED 1 is on replace CB If 115VAC is present check for 115VAC at CR or MC coil If 115VAC is present check CR or MC coil and contact continuity Replace as needed If CR or MC is okay check Comp start relay and start and run capacitors Next check Comp motor winding continuity If Comp is energized but evaporator is not cooling check for an inefficient Comp See VII
31. Cooled Models MAH Thermostatic Expansion Valve Spray Tubes Supply Inlet Inlet Water Valve Hot Gas Valve Thermostatic ___ Bin Control Condenser Cleaning Valve Fan Motor Control Switch High Pressure Switch Drier Float Switch Liquid Line Valve KM 515MAH Water Pump Compressor Mechanical Bin Control and Bracket Thermostatic Bin Control Bracket amp Bulb Holder Model Shown KM 515MAH 2 Water Cooled Models MWH M Thermostatic Main Transformer Expansion Valve KM 650MWH M Water Supply Inlet Spray Tubes P Hot Gas Valve Inlet Water Valve High Pressure Switch Water Regulating Thermostatic Valve Bin Control 594 E filli Condenser i UN Cleaning Valve ce Control Box Control Switch Liquid Line Valve KM 320MWH and Float Switch KM 515MWH Drier Water Pump Compressor Mechanical Bin Control and Bracket Thermostatic Bin Control Bracket amp Bulb Holder Model Shown KM 515MWH 3 Remote Models MRH 3 Thermostatic Expansion Valves Spray Tubes Water Supply Inlet Inlet Water Valve Cleaning Valve Junction Boxes Control Switch fhe IV II J Control Box The
32. REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 3 7 0A 5 Min Freeze AT 104 F WT 80 F 20A WATER TEMP F 50 70 90 O 899 408 874 397 817 371 880 399 842 382 772 350 874 397 815 370 749 340 855 388 800 363 689 313 Crescent Cube 14 2 6 4 kg 720pcs N A 90 70 F 70 50 F 1830 5 4 1670 4 5 147 18 0 254 28 2 30 x 27 3 8 x 37 7 16 762 x 695 x 950 Stainless Steel Galvanized Steel Rear Net 198 Ibs 90 kg Shipping 258 Ibs 117 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model CS12K6E TF5 279 Remote Condenser Unit URC 9F Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve Condensing Pressure Regulator on URC 9F R404A 9 165 4 oz 42009 Icemaker 5 16 5 oz Cond Unit 3 108 15 oz High 467PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin Remote Condenser Unit VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY
33. cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 5 700 BTU h AT 90 F 32 WT 70 F 21 TOTAL HEAT OF REJECTION FROM COMPRESSOR 1 000 BTU h AT 90 F 32 C WT 70 F 21 C WATER FLOW FOR CONDENSER 45 gal h AT 100 F 38 WT 90 F 32 PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 74 3 515 ICE AMBIENT TEMP WATER TEMP F C F C 70 21 80 27 90 32 Ibs day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 9 600 BTU h AT 90 F 32 WT 70 F 21 Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 75 4 KM 515MWH ICE AMBIENT TEMP WATER TEMP
34. e When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Refrigerant Recovery The icemaker is provided with refrigerant access valves Using proper refrigerant practices recover the refrigerant Store the refrigerant in an approved container Do not discharge the refrigerant into the atmosphere 51 2 Brazing WARNING e R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F 80 C R 404A itself is not explosive or poisonous However when exposed to high temperatures open flames R 404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous Do not use silver alloy or copper alloy containing arsenic 1 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG Note Because the pipes in the evaporator case are specially coated to resist corrosion it is important to make connections outside the evaporator case when possible If it is necessary to braze inside the evaporator case use sandpaper to remove the coating from the brazing connections before unbrazing the components NOTICE Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of
35. electrical specifications Failure to use an independent power supply of proper capacity can result in a tripped breaker blown fuses damage to existing wiring or component failure This could lead to heat generation or fire THE ICEMAKER MUST BE GROUNDED Failure to properly ground the icemaker could result in death or serious injury Before servicing the appliance move the control switch to the OFF position and turn off the power supply Lockout Tagout to prevent the power supply from being turned back on inadvertently To reduce the risk of electric shock do not touch the control switch with damp hands Do not make any alterations to the unit Alterations could result in electric shock injury fire or damage to the unit WARNING continued The appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety e Children should be properly supervised around this appliance Do not climb stand or hang on the appliance or allow children or animals to do so Serious injury could occur or the appliance could be damaged e Do not use combustible spray or place volatile or flammable substances near the appliance They might catch fire Keep the area around the appliance clean Dirt dust or ins
36. injury NOTICE Indicates a situation which could result in damage to the appliance or property IMPORTANT Indicates important information about the use and care of the appliance WARNING The appliance should be destined only to the use for which it has been expressly conceived Any other use should be considered improper and therefore dangerous manufacturer cannot be held responsible for injury or damage resulting from improper incorrect and unreasonable use Failure to service and maintain the appliance in accordance with this manual will adversely affect safety performance component life and warranty coverage and may result in costly water damage To reduce the risk of death electric shock serious injury or fire follow basic precautions including the following Only qualified service technicians should install and service this appliance The appliance must be installed in accordance with applicable national state and local codes and regulations Failure to meet these code requirements could result in death electric shock serious injury fire or damage to the appliance Electrical connection must be hard wired and must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or severe damage to equipment The appliance requires an independent power supply of proper capacity See the nameplate for
37. is closed the harvest cycle begins If harvest cycle begins Comp HGV FMR energized continue to step 5a If FS is open WV remains energized through additional 1 min fill cycles until water enters the water tank and FS closes low water safety protection during initial start up and at the end of each harvest Diagnosis Check that water enters the water tank If not check that the water supply line shut off valve is open and screens or external filters are clear Check for 115VAC at CB K1 6 to neutral W If 115VAC is not present replace CB If 115VAC is present and WV does not energize check for 115VAC at WV If 115VAC is present check coil continuity If open replace WV If the water tank fills but the appliance fails to start harvest Comp energized check for open FS See Float Switch Check and Cleaning If FS is closed and CB fails to start the harvest cycle after 1 min replace CB 5a Initial Harvest Cycle LEDs 1 4 and 2 are on WV and X11 relay continue Comp FMR HGV and X10 relay energize CB monitors the warming of the evaporator via the thermistor located on the suction line When the thermistor reaches 48 F 9 C CB reads 3 9 kO from the thermistor and turns harvest termination over to the harvest timer S4 dip switch 1 amp 2 The harvest timer has settings of 60 90 120 and 180 sec The pump out timer S4 dip switch 3 amp 4 acts in place of the harvest timer during cycles with a pump out S4
38. should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 80 9 KM 650MWH M AWAITING DATA Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 81 10 650 ICE AMBIENT WATER TEMP PRODUCTION PER 24 HR F C 50 10 70 21 90 32 70 21 80 27 90 32 Ibs day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG 100 38 TOTAL HEAT OF REJECTION FROM COMPRESSOR 1500 BTU h AT 90 F 32 C WT 70 F 21 CONDENSER VOLUME 40 CU IN URC 5F Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 82 11 901 AMBIENT WATER TEMP F C PRODUCTION PER 24 70 21 80 27 90 32 Ibs da
39. 0 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 8 500 BTU h AT 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 1 400 BTU h AT 90 F 32 C WT 70 F 21 C CONDENSER VOLUME 43 CU IN URC 5F Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 77 6 600 AMBIENT TEMP PRODUCTION PER 24 HR CFPC 70 21 80 27 90 32 Ibs day _kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG 2 100 38 Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 78 7 650 AMBIENT PRODUCTION 24 F C 70 21 80 27 90 32 Ibs day kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIM
40. 113 PSIG Note We reserve the right to make changes specifications and design without prior notice 70 13 901 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER galJ24HR 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE P C BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire for 115V 11 6A 5 Min Freeze AT 104 F WT 80 F 20A WATER TEMP F 9 889 403 859 389 803 364 866 393 818 371 755 343 859 389 785 356 724 328 100 843 382 771 350 668 303 Crescent Cube 13 5 16 6 1 kg 720pcs N A 90 70 F 70 50 F 1770 5 4 1590 4 3 152 19 3 246 27 7 30 x 27 3 8 x 37 7 16 762 x 695 x 950 Stainless Steel Galvanized Steel Rear Net 189 Ibs 86 kg Shipping 249 Ibs 113 kg Permanent Connection In
41. 40 440 430 aww m j 1 RWG 3440 430 440 33 440 430 43013401 HW B WY INI V JH 13 13 a 1113 1113 Juda E 08 1081 TUK 8102 41 ole FE ASLL JeuuojsueJ lt gt TONCHAD L Hh PE 3 317 yw j eon n HST 10H m 0553 ami 3l d M 3191 33 T E I m 10011 rM Tis master DNI ha a 1081402 NIG THU EE 1041 E TESE MIE 1 1 1 INA 103 3 88 AOE Te HI 106 254 55 1 T RH 059 SISd 7 aui YOUMS 1nss uq uBiH WY 3000 xn H Tvl 49 HUA 106 340 440 44 44 440 HUN 06 1 Te To 1 10 4401330 340 11 130133 140 330 440 330 4259 17 varie u H f DES 11135 HOLIMS e
42. 6 KM 600MAH J a a aaa 78 pa KM TNT u 79 8 KM 650MW H e NEEE AEAEE TNR 80 9 KM 650MWH M 81 10 KM 650MR Fl u u uuu REKER 82 UB n MP 83 uli PTT 84 MRH TNR Em 85 14 KM 901MRH3 9 86 C Wiring Diagrams DP S 87 1 Diagrams Without Harvest Pump Timer Relays 87 KM 320M_H KM 515M_H KM 600MAH 87 b KM 650MAH KM 650MWH 901 KM 901MWH 88 c KM 650MRH KM 901MRH shi ta at 89 90 2 Diagrams With Harvest Pump 91 a KM 515MAFHI 91 b 650 KM 650MWH 901 92 KM 650MWH BM_ 93 d KM 650MR FH 94 Important Safety Information Throughout this manual notices appear to bring your attention to situations which could result in death serious injury damage to the appliance or damage to property WARNING Indicates a hazardous situation which could result in death or serious
43. 7 Pump Motor ___2 ___ _ __ Bulb loose or defective 10 Headmaster C P R a Not bypassing remote models 3 Low Ice Production Low Ice Production Possible Cause Long Harvest Cycle 1 Evaporator a Scaled up 2 Spray Tubes and or Spray a Dirty Guides b Out of position 3 Refrigerant Charge Low TUE b External water filters clogged C Insufficient water line size Minimum 1 4 Nominal ID 6 mm Nominal OD in the EU water tubing or equivalent d Too cold 5 Control Board a Thermistor connection loose K3 See Control Board Check b Defective 6 Thermistor a Loose disconnected or defective See Thermistor Check 39 2 Float Switch See I E Float Switch Check and Cleaning Defective switch 6 Control Board See Control Board Check b Defective 7 Refrigerant Charge Low 8 Thermostatic Expansion Valve Bulb loose b Defective a Inefficient or off 10 Pump Motor a RPM too slow 11 Liquid Line Valve a Erratic or restricted 12 Headmaster C P R a Not bypassing remote models 40 II Controls Adjustments e A Hoshizaki exclusive control board is employed KM series appliances All models are pretested and factory adjusted e For a control board check procedure see Control Board Check NOTICE Fragile handle very carefully The control board contains integrated circuits which
44. AH with harvest pump timer and every cycle on KM 515M_H without harvest pump timer Generally no adjustment is required However where water quality is bad and the icemaker needs a pump out more often the pump out frequency can be adjusted The pump out frequency control can be set to have a pump out occur every cycle or every 2 5 or 10 cycles Timing of the first pump out is dependent on the control board On E control boards the first pump out is after the first freeze cycle On G control boards the first pump out is dependent on S4 dip switch 5 amp 6 See the table below E amp G Control Board fetPumpOu 4 Dip Switch Settin ip g Pump Out E Control Board G Control Board After 1st freeze cycle 5 Bin Control Selector or Harvest Pump Timer Operation S4 dip switch 7 Depending on the control board S4 dip switch 7 is used for either bin control selection or harvest pump timer operation 1 Bin Control Selector E Control Board NOTICE Do not adjust This dip switch must be left in the factory default position or the icemaker will not operate correctly When set to on position on an icemaker with a thermostatic bin control a 5 beep alarm sounds open circuit and the icemaker does not operate E Control Board S4 Dip Switch Setti ip Switch Setting Bin Control Mechanical requires resistor wire harness 48 2 Harvest Pump Timer Control Board
45. ATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 79 8 KM 650MWH ICE AMBIENT WATER F C TY 70 21 300 294 80 27 296 287 90 32 281 Ibs day kg day 100 38 289 BTT APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 9 500 BTU h AT 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 1 600 BTU h AT 90 F 32 C WT 70 F 21 WATER FLOW FOR CONDENSER 73 gal h 100 F 38 C WT 90 F 329C PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold
46. COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 115 60 1 11 3A 5 Min Freeze 104 F WT 80 F 20A 9 491 223 480 218 443 201 482 219 465 211 417 189 480 218 452 205 408 185 465 211 442 200 368 167 Crescent Cube 10 3 Ibs 4 7 kg 480pcs N A 90 70 F 70 50 F 1090 5 8 1000 4 9 94 20 8 198 40 4 22 x 27 3 8 x 30 5 16 560 x 695 x 770 mm Stainless Steel Galvanized Steel Rear Net 151 Ibs 68 kg Shipping 175 Ibs 79 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model RST55C1E CAA 202 Remote Condenser Unit URC 5F Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve Condensing Pressure Regulator on URC 5F 404 4 Ibs 4 8 oz 1950g Icemaker 2 105 6 8 oz Cond Unit 1 16 14 oz High 467PSIG Low 206PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Dispenser or Ice Storage Bin Remote Condenser Unit VOLTAGE RANGE 104 127V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prio
47. Counter Harvest Pump Timer 7 Control Board 7 through 5 Do Not Adjust Float Switch Pump Out Frequency Control 5 amp 6 Selector 1 Pump Out Timer 3 amp 4 Harvest Timer 1 amp 2 46 2 Harvest 54 dip switch 1 2 The harvest timer starts counting when the thermistor reaches 48 F 9 C at the evaporator outlet and the control board reads 3 9 from the thermistor The harvest timer is factory set and generally no adjustment is required However a setting longer than the factory setting may be advised in cases where the drain provided at harvest needs to be prolonged for extra cleaning Before changing this setting contact Hoshizaki Technical Support at 1 800 233 1940 for recommendations Keep in mind that setting the harvest timer to a longer setting decreases 24 hour production Note that the pump out timer S4 dip switch 3 amp 4 acts in place of the harvest timer during cycles with a pump out For details see 3 Pump Out Timer 54 dip switch 3 amp 4 Note On models with a pump out every cycle the harvest timer is only relevant during the initial harvest cycle since a pump out occurs every cycle thereafter 3 Pump Out Timer S4 dip switch 3 amp 4 NOTICE KM 515M H models without harvest pump timer operation never adjust the pump out timer s harvest timer T2 for a time less than 150 sec Otherwise the icemaker will not perform properly On models with harve
48. E BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire for 115V 8 7A 5 Min Freeze AT 104 F WT 80 F 15A 15A Ambient Temp F WATER TEMP F 5 j 7 9 70 912 414 887 402 849 385 893 405 854 388 815 370 887 402 827 375 787 357 878 398 818 371 751 341 13 4 Ibs 6 1 kg 720pcs N A 90 70 F 70 50 F 1550 4 5 1480 3 9 181 21 9 245 26 9 1151 139 631 69 30 x 27 3 8 x 37 7 16 762 x 695 x 950 mm Stainless Steel Galvanized Steel Rear Net 189 Ibs 86 kg Shipping 249 165 113 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Cond Inlet Cond Outlet 1 2 FPT 3 8 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe Pressure Regulator Thermostatic or Mechanical Bin Control Hermetic Model CS12K6E PFV 237 Water Cooled Tube in Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R404A 1 15 4 oz 890g High 427PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin VOLTAGE RANGE AMBIENT TEMP WATER SUPPLY TEMP WATER SUPPLY PRESSURE 187 253 V 45 100 45 90 10
49. E ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER galJ24HR gal 100 Ibs WATER COOLED CONDENSER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire for 115 5 4 A 5 Min Freeze AT 104 F WT 80 F 15A Ambient WATER TEMP F Temp F 950 70 90 661 300 649 294 616 280 652 296 633 287 591 268 649 294 620 281 581 264 637 289 611 277 Crescent Cube 14 2 Ibs 6 5 kg 720 pcs 546 248 N A 90 70 F 70 50 F 1060 4 10 1080 3 92 138 22 3 268 40 5 744 120 476 72 22 x 27 3 8 x 37 7 16 560 x 695 x 950 mm Stainless Steel Galvanized Steel Rear Net 169 Ibs 77 kg Shipping 200 Ibs 91 kg Permanent Connection Inlet 1 2 FPT Condenser Inlet 1 2 FPT Outlet 3 4 FPT Condenser Outlet 3 8 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe Pressure Regulator Thermosta
50. FRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire for 115V 7 4 5 Min Freeze 104 F WT 80 F 15 15 Ambient WATER TEMP F Temp F 50 70 90 70 632 287 612 278 574 260 80 617 280 586 266 541 246 90 612 278 564 256 521 236 100 601 272 554 251 482 219 Crescent Cube 14 4 lbs 6 5 kg 720 pcs N A 90 70 F 70 50 F 1320 5 6 1220 4 6 93 16 5 267 42 2 22 x 27 3 8 x 37 7 16 560 x 695 x 950 mm Stainless Steel Galvanized Steel Rear Net 169 105 77 kg Shipping 200 Ibs 91 kg Permanent Connection Inlet 1 2 Outlet 3 4 3 8 Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model RST61C1E CAV Remote Condenser Unit URC 5F Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve Condensing Pressure Regulator on URC 5F R 404A 5 Ibs 14 9 oz 2690 g Icemaker 4 Ibs 0 9 oz Cond Unit 1 14 oz High 467 PSIG Low 230 PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin Remote Condenser Unit VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserv
51. Hoshizaki America Inc Modular Crescent Cuber Models KM 320MAH MWH 515 MWH KM 600MAH KM 650MAH 90 SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Number 73196 Issued 4 29 2013 WARNING Only qualified service technicians should install and service the appliance To obtain the name and phone number of your local Hoshizaki Certified Service Representative visit www hoshizaki com No service should be undertaken until the technician has thoroughly read this Service Manual Failure to service and maintain the appliance in accordance with this manual will adversely affect safety performance component life and warranty coverage Proper installation is the responsibility of the installer Product failure or property damage due to improper installation is not covered under warranty Hoshizaki provides this manual primarily to assist qualified service technicians in the service of the appliance Should the reader have any questions or concerns which have not been satisfactorily addressed please call send an e mail message or write to the Hoshizaki Technical Support Department for assistance Phone 1 800 233 1940 770 487 2331 Fax 1 800 843 1056 770 487 3360 E mail techsupport hoshizaki com HOSHIZAKI AMERICA INC 618 Highway 74 South Peachtree City GA 30269 Attn Hoshizaki Technic
52. I B Performance Data If Comp is energized but FMR is not check for 115VAC at the FMR junction box If 115VAC is not present check icemaker wiring connections If 115VAC is present check for voltage at condenser unit If 115VAC is not present check field wiring connections If 115VAC is present check FMR capacitor motor winding and fan blade for binding c WV HGV Diagnosis If WV is energized check for 115VAC at CB K1 6 O to neutral W If 115VAC is present after PM energizes in harvest cycle replace CB If 115VAC is not present replace WV bypassing If HGV did not de energize at the end of harvest check for 115VAC at CB K1 2 P to neutral W If 115VAC is present 50 sec after PM energizes replace CB If 115VAC is not present replace HGV bypassing d PM Diagnosis Confirm water is flowing over evaporator from PM and not WV If PM de energizes once freeze begins check for 115VAC at CB K1 4 R to neutral W If 115VAC is not present replace CB If 115VAC is present and PM is de energized check for 115VAC at control switch 5 R to neutral W If 115VAC is present at CB K1 4 R and not at control switch 5 R check control switch continuity between 5 R 4 R Replace as needed If 115VAC is present at control switch 5 R to neutral W check PM capacitor and motor winding continuity e FM and LLV Diagnosis If FM or LLV does not energize check for 115VAC at CB 1 3 BK to neutral W If
53. OL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 115 60 1 11 7 A 5 Min Freeze AT 104 F WT 80 F 20A WATER TEMP F 50 70 9 501 227 482 218 447 203 486 221 456 207 416 189 482 218 435 197 396 180 472 214 426 193 361 164 Crescent Cube 10 2 Ibs 4 6 kg 480pcs N A 90 70 F 70 50 F 1090 6 0 980 4 7 99 22 8 188 37 6 22 x 27 3 8 x 30 5 16 560 x 695 x 770 mm Stainless Steel Galvanized Steel Rear Net 151 Ibs 68 kg Shipping 175 Ibs 79 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model RST55C1E CAA 202 Air Cooled Fin and Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R404A 1 Ib 7 3 oz 660g High 467PSIG Low 206PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Dispenser or Ice Storage Bin VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 WATER SUPPLY 45
54. ONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 14 100 BTU h AT 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 2 200 BTU h AT 90 F 32 C WT 70 F 21 C CONDENSER VOLUME 121 CU IN URC 9F Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 86 C Wiring Diagrams 22 82 225725 umno 2786 1 AS 01 NAINO J uuJOJSUE1 1 Diagrams Without Harvest Pump Timer Relays a KM 320M_H KM 515M_H KM 600MAH SISd 7 Tlk epo IIHI 5 13101A 30 44 duo dd WA H7 Ws LS W HT YOUMS 9JnSS8Jg UDIH x i 11135 HOLIMS dl 3 ddi ddi dd ddi 84 EE HV 31 34 dd ddi 34 id dd H 3018 Way g dd dd
55. PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 72 Performance Data 1 KM 320MAH Dir PRODUCTION PER24HR 70 21 80 27 90 32 Ibs day kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 7 400 BTU h AT 90 F 32 C WT 70 F 21 C Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 73 2 KM 320MWH ICE PRODUCTION 24 WATER F C 115 120 60 1 50 10 70 21 90 32 352 348 324 349 342 Ibs day kg day APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg
56. Pin 6 WB RE X Switch for C control board and ALPINE control board service control board only Set to ALP for appliances covered in this manual e LED 1 X1 Relay K1 Connector Pin 1 9 K2 Connector Control Transformer 10 5VAC E Control Board Part Number 2A1410 02 42 2 G Control Board Control Board Bin Control Switch Closed LED green m OUTPUT TEST Button 6 54 Switch 2 4 ALARM RESET Button P used to test relays on control board in thermostatic bin control application 00098209 Control Switch Open LED yellow mechanical bin control application only white Connector Thermistor harvest control and high temperature safety Part Number K4 red Connector Mechanical Bin Control or K4 Jumper thermostatic bin control application e S5 Dip Switch Alarm Buzzer xl ooo POWER OK LED red lights when 10 5VAC is supplied to K2 connector Relay LEDs 4 indicate which relays are energized K5 black Connector Float Switch water level TX RED WHITE Label control board revision level indicated on label W K D2 P N 243792 01 s E99 k 890 which 1 connector pins energized ___ K1 Connector LED 2 2 Relay ex Pins
57. RE DROP OF COOLING WATER LINE less than 10 PSIG Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 84 13 901 APPROXIMATE AMBIENT TEMP P a 70 21 80 27 90 32 Ibs day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 14 000 BTU h AT 90 F 32 WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 2 200 BTU h AT 90 F 32 WT 70 F 21 C CONDENSER VOLUME 121 CU IN URC 9F Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 85 14 901 ICE AMBIENT TEMP WATER TEMP F C 70 21 80 27 90 32 Ibs day kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 C
58. SSORIES SUPPLIED REQUIRED N A Ice Storage Bin OPERATING CONDITIONS VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F 10 113 PSIG WATER SUPPLY PRESSURE Note We reserve the right to make changes in specifications and design without prior notice 59 2 KM 320MWH SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER gal 24HR gal 100 Ibs WATER COOLED CONDENSER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 115 60 1 8 2 A 5 Min Freeze AT 104 F WT 80 F 20A WATER TEMP F 50 70 9 352 160 348 158 324 147 349 158 342 155 309 140 348 158 337 153 308 140 337 153 330 150 281 127 Crescent Cube 7 2 lbs 3 3 kg 360 pcs N A 90 70 F 70 50 F
59. X10 relay If PM is energized and rotating in pump out rotation make sure the drain line is not clogged and that CV is clean and operating properly Confirm FM and LLV de energize If FM or LLV are energized with LEDs 1 3 and 2 on replace CB 8 Normal Harvest Cycle Same as the initial harvest cycle Return to step 5a above Note Appliance continues to cycle until MBC is satisfied or power is switched off The appliance always restarts at the 1 min fill cycle 9 Shutdown Mechanical Bin Control See 11 0 2 Mechanical Bin Control Check Legend CB control board Comp compressor valve FM fan motor FMR fan motor remote FS float switch HGV hot gas valve HM headmaster C P R HPS high pressure switch LLV liquid line valve MBC mechanical bin control motor TXV thermostatic expansion valve WRV water regulating Valve WV inlet water valve 29 Control Board Check Before replacing CB that does not show a visible defect and that you suspect is bad always conduct the following check procedure This procedure will help you verify your diagnosis Alarm Reset If CB is in alarm beeping press the ALARM RESET button CB while CB is beeping WARNING Risk of electric shock Care should be taken not to touch live terminals Once reset the icemaker starts at the 1 minute fill cycle For audible alarm information see LED Lights and Audible Alarm Safeties 1 Check
60. al Support Department Web Site www hoshizaki com NOTE To expedite assistance all correspondence communication MUST include the following information e Model Number e Serial Number e Complete and detailed explanation of the problem This manual should be read carefully before the appliance is serviced Read the warnings and guidelines contained in this manual carefully as they provide essential information for the continued safe use service and maintenance of the appliance Retain this manual for any further reference that may be necessary CONTENTS Important Satety 6 L Construction Water Refrigeration Circuit Diagram 8 ush S UR DN 8 1 Air Cooled Models MAH 8 2 Water Cooled Models 222 2 lt lt lt 9 3 Remote Models WAI has sea 10 Water Refrigeration Circuit Diagram EBD 11 1 Air Cooled Models MAH peux eR xU Ma 11 2 Water Cooled Models MWH M 12 3 Remote Models S a 13 II Sequence of Operation
61. and Service 8888 14 A Sequence or Operation Flow CHAN 14 1 E and Control Board without Harvest Pump Timer Operation 14 2 Control Board with Harvest Pump Timer Operation 16 B Service Diagnosis us 17 1 E and G Control Board without Harvest Pump Timer Diagnosis 18 2 Control Board with Harvest Pump Timer Diagnosis 24 C Gontrol Board Gheck uuu T 30 D Bin Control 31 1 Thermostatic Bin Control Check usines 31 2 Mechanical Bin Control Check and Cleaning 32 E Float Switch Check Cleaning 34 DN Float Switch 34 2 Float Switch Nt TT 35 Thermistor uuu un asnus 36 CP ua 37 III AdjUSITB TIS ER DESCR CR ERE 41 A Control Board Layout MR te 42 uu uuu anan MORTE 42 2 G Control uyu eee tance et n Qua mashan E 43 B LED Lights and Audible Alarm Safeties 44 1 i
62. are susceptible to failure due to static discharge It is especially important to touch the metal part of the icemaker when handling or replacing the control board e Do not touch the electronic devices on the control board or the back of the control board Do not change wiring and connections Do not misconnect K3 WHITE K4 RED and K5 BLACK because the same connector is used for the thermistor mechanical bin control and float switch K4 RED is not used on E control board models Do not short out power supply to test for voltage Always replace the whole control board assembly if it goes bad 41 Control Board Layout 1 E Control Board E Control Board OUTPUT TEST Button ALARM RESET Button 54 Dip Switch used to test relays on control board ALARM RESET 1 a 00088 0 EST O A O L K3 white Connector z Thermistor harvest control and high temperature safety Freeze Timer LED yellow 54 R R15 u sri LED orange R16 1 R33 7 8 1 29 C2 TT m R25 R22 R26 C6 R14 16 K3 RED N WHITE R24 red Connector Open Alarm Buzzer 51 R52
63. arged e Refrigerant lines or components plugged 7 Control Transformer Coil winding open or shorted 115VAC 10 5VAC 8 Control Board See Control Board Check p Yellow BC OPEN LED on bin full G control board Tripped with bin filled with ice 9 Mechanical Bin Control See 11 0 Bin Control Check b Actuator does not move freely Defective 10 Water Supply Water supply off or improper water pressure LR MEE External water filters clogged 11 Inlet Water Valve Screen or orifice clogged Coil winding open Water valve open in freeze cycle 12 Float Switch Float does not move freely Float Switch Check b Defective and Cleaning 13 Compressor a Compressor relay magnetic contactor contacts bad or coil winding open b Start capacitor or run capacitor defective single phase Internal protector open d Start relay contacts bad or coil winding open single phase Compressor defective 14 Hot Gas Valve Closed in harvest cycle Open in freeze cycle 37 No Ice Production Possible Cause 15 Thermistor a Loose disconnected or defective See Thermistor Check 16 Pump Motor a Motor winding open b Bearing worn out or locked rotor c Defective capacitor Mechanical seal worn out 17 Thermostatic Expansion Valve Bulb loose Il a Closed in freeze cycle 18 Fan Motor o lt b 20 Water Sys
64. blade y 7 CCW Lower screwdriver until the temperature is in the proper range See Fig 5 Next check that ES the reference pressure is the range indicated the Head Pressure table the Performance Data section If it is not in the Top View Fig 5 proper range verify the refrigerant charge 3 Check that the condenser drain temperature is stable 54 V Maintenance The maintenance schedule below is a guideline More frequent maintenance may be required depending on water quality the appliance s environment and local sanitation regulations WARNING Only qualified service technicians should service the appliance reduce the risk of electric shock do not touch the control switch or service switch with damp hands Before servicing Move the control switch to the OFF position and turn off the power supply Place the disconnect in the OFF position Lockout Tagout to prevent the power supply from being turned back on inadvertently e CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after any maintenance is done to the icemaker Make sure that none have fallen into the dispenser unit ice storage bin Maintenance Schedule Clean the ice scoop using a neutral cleaner Rinse thoroughly after cleaning Bi Weekly Air Filters Inspect Wash with warm water and neutral cleaner if dirt
65. bypassing If energized replace CB If de energized and bypassing replace LLV d WRV Diagnosis Confirm WRV is not leaking by Initial Harvest Cycle Termination Diagnosis When the thermistor reaches 48 F 9 C CB reads 3 9 from the thermistor and turns harvest termination over to the harvest timer S4 dip switch 1 amp 2 Check discharge line temperature For a thermistor check see II F Thermistor Check If 1 min fill cycle starts after harvest timer terminates check that FS is clean and operating properly see Float Switch Check and Cleaning If FS is closed CB proceeds to the next cycle If not replace CB Note The minimum total time allowed by CB for a complete harvest cycle is 2 min Maximum harvest time allowed is 20 min NOTICE On models with G control board and no harvest pump timer relays S4 dip switch 7 must remain off Otherwise PM energizes in reverse direction the last 50 seconds of harvest and empties water from water tank 6 Freeze Cycle LED 1 is on Comp FMR continue PM FM and energize WV and HGV de energize Appliance is held in freeze by a 5 min short cycle protection timer After 5 min timer terminates and FS opens freeze cycle terminates a Freeze Cycle Diagnosis Confirm Comp and FMR continue Confirm that PM FM and LLV energize Confirm WRV opens Next confirm WV and HGV de energize During the first 5 min of freeze confirm evaporator is cooling If not
66. cribed above replace CB 4 To verify voltage output from CB to the components slide the CB K1 connector out far enough to allow multimeter lead contact With the icemaker in the cycle to be tested check output voltage from the corresponding pin on CB K1 connector to a neutral W wire If output voltage is not found and the appropriate LED is on replace CB Legend CB control board CT control transformer 30 D Bin Control Check 1 Thermostatic Bin Control Check TBC shuts down the icemaker within 10 sec when ice contacts the thermostatic bulb regardless of the cycle at activation NOTICE When the ambient temperature is below 45 F 7 C TBC opens and shuts down the appliance even if the ice storage bin is empty When is set in the prohibited range the appliance operates continuously even if the ice storage bin is filled with ice Setting in the prohibited range may result in severe damage to the appliance TBC is factory set and generally no adjustment is required However adjustment may be needed in some conditions particularly at higher altitude locations Note If used on G control boards a jumper 4A4883G01 must be placed on the red K4 connector Otherwise CB yellow BC OPEN LED is on and appliance will not start To check TBC follow the steps below 1 2 3 4 5 6 Turn off the power supply Remove the front panel then move the control switch to the OFF position Remove the cont
67. dip switch 5 amp 6 WV and X11 relay are energized during harvest for a maximum of 6 min or the length of harvest minus 50 sec whichever is shorter 50 sec before harvest terminates PM energizes See step 5b below a Comp Diagnosis Check that evaporator is warming If not confirm that Comp energizes If not check for 115VAC at CB K1 1 or 9 V to neutral W If 115VAC is not present check for 115VAC at CB K1 7 or 10 BR to neutral W If 115VAC is present at 7 or 10 BR and not at 1 or 9 V replace CB If 115VAC is present check for 115VAC at CR or MC solenoid If 115VAC is present confirm contacts are closed If not replace CR or MC If CR or MC contacts are closed check Comp external overload Comp start and run capacitors Comp start relay and Comp motor winding If Comp is energized and evaporator is not warming check that HGV energizes and opens Check for 115VAC at CB K1 2 P to a neutral W If 115VAC is not present and LED 2 is on replace CB If 115VAC is present check coil voltage and continuity Replace as needed Confirm that LLV is de energized and closed not bypassing If energized replace CB If de energized and bypassing replace LLV Confirm WRV is not leaking by If evaporator is warming PM energizes for the last 50 sec of harvest b HGV Diagnosis If Comp is energized and evaporator is not warming check that HGV energizes and opens Check for 115VAC at CB K1 2 P to neutral W If 115VAC
68. e 44 2 Gonirol BOE ocio 45 C Settings and PGS UNM 46 1 Default 46 a E and G Control Board without Harvest Pump Operation 46 Control Board with Harvest Pump Timer 46 2 Harvest Timer S4 dip switch 1 amp 2 47 3 Pump Out Timer S4 dip switch 3 amp 4 47 4 Pump Out Frequency Control S4 dip switch 5 4 6 48 3 5 Bin Control Selector or Harvest Pump Timer Operation S4 dip switch 7 48 6 Factory Use 54 dip switch 8 RR Rx Ya Rd aka n ARE 49 7 Freeze Timer S4 dip switch 9 amp 10 10 49 8 Float Switch Selector S5 dip switch 1 Control Board 50 9 Refill Counter S5 dip switch 2 through 5 Control Board 50 n mt 50 IV Refrigeration Circuit and Component Service Information 51 A Refrigeration Circuit Service 51 B Component Service
69. e Check that PM stops and re starts and water is flowing down the drain through CV If PM does not stop and re start check that CB LEDs 1 3 and 2 are on If not replace CB If LEDs 1 3 and 2 are on and PM does not energize check for 115VAC at CB K1 5 DBU to neutral W If 115VAC is not present replace CB If 115VAC is present make sure the drain line is not clogged and that CV is clean and operating properly Confirm FM and LLV de energize If FM or LLV is energized with LEDs 1 3 and 2 on replace CB 8 Normal Harvest Cycle Same as the initial harvest cycle Return to step 5 above Note Appliance continues to cycle until TBC or MBC is satisfied or power is turned off The appliance always restarts at the 1 min fill cycle 22 9 Shutdown E Control Board Thermostatic Bin Control When the appliance is running hold ice in contact with the thermostatic bulb TBC switch opens within 10 sec shutting down the appliance TBC is factory set and generally no adjustment is required However adjustment may be needed in some conditions particularly at higher altitude locations NOTICE Do not adjust S4 dip switch 7 out of the factory default position This dip switch must be left in the factory default position or the appliance will not operate correctly Diagnosis 1 Thermostatic Bin Control Check and Cleaning b Mechanical Bin Control See II D 2 Mechanical Bin Control Check and Cleani
70. e the right to make changes in specifications and design without prior notice 68 11 901 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 208 230 60 1 3 wire for 115V 11 4 5 Min Freeze 104 F WT 80 F 20A Ambient WATER TEMP F TempCF 50 70 9 874 396 832 378 785 356 842 382 778 353 736 334 832 378 732 332 687 312 826 375 721 327 646 293 Crescent Cube 13 6 108 6 2 kg 720pcs N A 90 70 F 70 50 F 1710 5 6 1600 4 4 143 19 6 240 27 5 30 x 27 3 8 x 37 7 16 762 x 695 x 950 mm Stainless Steel Galvanized Steel Rear Net 196 Ibs 89 kg Shipping 256 Ibs 116 kg Permanent Connectio
71. ects in the appliance could cause harm to individuals or damage to the appliance Additional Warning for Remote Models THE REMOTE CONDENSER UNIT MUST BE GROUNDED The power supply and ground wire to the remote condenser unit are supplied from the icemaker Failure to properly ground the remote condenser unit could result in death or serious injury Move the icemaker control switch to the OFF position and turn off the power supply to the icemaker before servicing the remote condenser unit Lockout Tagout to prevent the power supply from being turned back on inadvertently NOTICE e Follow the instructions in this manual carefully to reduce the risk of costly water damage In areas where water damage is a concern install in a contained area with a floor drain e Install the appliance a location that stays above freezing Normal operating ambient temperature must be within 45 F to 100 F 7 C to 38 C e Do not leave the appliance on during extended periods of non use extended absences or in sub freezing temperatures To properly prepare the appliance for these occasions follow the instructions in VI Preparing the Appliance for Periods of Non Use Do not place objects on top of the appliance The dispenser unit ice storage bin is for ice use only Do not store anything else in the dispenser unit ice storage bin I Construction and Water Refrigeration Circuit Diagram A Construction 1 Air
72. etting Comp FMR PM 10 seconds 20 seconds pump out timer WV setting The built in safeties shut down the icemaker and have alarms as listed below No of Beeps High Evaporator Temp Check for harvest problem stuck HGV or relay hot temperature gt 127 F 53 C water entering icemaker or shorted thermistor Harvest Backup Timer Orange H TIMER LED on harvest gt 20 min for two cycles Check for open thermistor HGV not opening TXV or in a row LLV leaking by low charge or inefficient Comp or WRV leaking by Freeze Timer Yellow F TIMER LED on freeze gt specified setting for Check for FS stuck closed up WV leaking by HGV two cycles in a row leaking by PM not pumping TXV not feeding properly LLV not opening low charge HM not bypassing or inefficient Comp To reset the above safeties press the ALARM RESET button with the power supply on ELE Low Voltage Red LED turns off if voltage protection operates 92Vac 5 or less The control voltage safeties automatically reset when 7 High Voltage voltage is corrected 147Vac 5 or more Legend Comp compressor FM fan motor FMR fan motor remote FS float switch HGV hot gas valve HM headmaster C P R LLV liquid line valve PM pump motor TXV thermostatic expansion valve WRV water regulating valve WV inlet water valve 44 2 G Control Board At startup 5 delay occurs while the control board conducts
73. fault Dip Switch Settings Note When checking high voltage 115VAC always choose white W neutral wire to establish a good neutral connection On 3 phase models the neutral W is provided through MT To confirm a good neutral check for 6 from white W neutral to ground GND If 60VAC is present neutral is good If 60VAC is not present check 208 230VAC main power supply to MT If 208 230VAC is present check MT continuity When checking voltage from the CB K1 connector 10 pin connector pull CB K1 connector out slightly to allow room for multimeter test leads contact 1 Turn off the power supply then access the control box Move the control switch to the OFF position Clear any ice from BC 2 Check that the 115VAC 10A fuse is good 1 Control Board without Harvest Pump Diagnosis 3 Power On Turn on the power supply then move the control switch to the ICE position A 5 sec delay occurs e Control Board CB red POWER OK LED turns e Control Board CB red POWER OK LED and green CLOSED LED turn on Note CB red POWER LED remains on unless the 10 5VAC power supply is interrupted K2 connector e Check CB using the steps Control Board Check e CB If yellow BC OPEN LED is on indicating a full bin check See II D 2 Mechanical Bin Control Check and Cleaning a Power On Diagnosis If CB red POWER LED i
74. housing then remove the float Be careful not to bend the retainer rod excessively when removing it 6 Wipe down FS housing shaft float and retainer rod with a mixture of 1 part Hoshizaki Scale Away and 25 parts warm water Clean the inside of the rubber boot and hose with cleaning solution Rinse the parts thoroughly with clean water 7 Reassemble FS assembly and replace it and the rubber boot in their correct positions Reconnect the vent tube and the flush tube 8 Replace the base cover in its correct position 9 Move the control switch to the ICE position 10 Replace the front panel in its correct position 11 Turn on the power supply to start the automatic icemaking process Legend CB control board FS float switch L Vent Shaft Flush Float Switch Housing Float hRetainer Rod Rubber Boot SSS ana Hose Fig 4 35 F Thermistor Check To check thermistor resistance follow the steps below 1 Turn off the power supply 2 Remove the front panel Move the control switch to the OFF position 3 Remove the control box cover 4 Remove the thermistor from the refrigerant tubing 5 Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 min 6 Disconnect the thermistor connector from CB K3 connector and check the resistance between thermistor leads Normal range is 4 7 to 6 2 If outside the nor
75. is not present replace CB If 115VAC is present check for 115VAC at HGV coil and check HGV coil continuity Replace as needed LLV Diagnosis Confirm that LLV is de energized and closed not bypassing If energized replace CB If de energized and bypassing replace LLV 9 WRV Diagnosis Confirm WRV is not leaking by 25 5b Harvest Pump Timer LEDs 1 3 and 2 on When the thermistor reaches 48 F 9 C CB reads 3 9 from the thermistor and turns harvest termination over to the harvest timer S4 dip switch 1 amp 2 50 sec before the harvest timer terminates LED 3 turns on and PM energizes Comp FMR HGV and X10 relay continue LED 4 turns off WV and X11 relay de energize Diagnosis Place a thermometer on the suction line next to the thermistor Has it warmed to 48 F 9 C or warmer Confirm thermistor status See Thermistor Check If the thermistor reading is in proper range dip switch 7 is on and PM does not energize 50 sec before harvest terminates replace CB If WV continues check for 115VAC at CB K1 6 O If 115VAC is present and LED 4 is off replace CB If LED 3 is on and PM is not energized check for 115VAC at CB K1 5 DBU If 115VAC is not present replace CB If 115VAC is present and PM is not energized check for 115VAC at X10 relay terminal 7 Y to neutral W If 115VAC is not present check for 115VAC at X10 relay terminal 3 P to neutral W and X10 relay terminal 5 Y to neut
76. l 11135 08 108 Hal L 4 4 Yu p 1 t AS OL EH JeuuojsueJ lt u Wi B ES E 1 Thre d opa F 9 10H t giy J am 1 21 P E T i r g B In e ooa na Ta set 4055380 lt rt Ji FU 08 7 1081 LN m TAY LL 00908 TOLL s m IB 1 9 H NOS MEL 3005 80102 3 aum ord c lt 89 330 330 330 4301 330 EHEN 106 1 330 330 330 N 33 110 EHUN 06 1 015 Zc 4c ul n9 ately 1no4no 11135 11135 08 106 011 eunsseJg uBiH i els nenas Loa a TD 51 A ASLL AG OL JeuuojsugJj
77. lace the strainer if applicable dig Line Use copper tube of the same diameter and length when replacing valve lines alves Fan Motors Install a new capacitor Pump Motor Install a new capacitor Thermistor Attach the new thermistor to the suction line in the same location as the previous thermistor The thermistor should be at the 12 o clock position on the tube e Smoothly fill the recessed area of the thermistor holder with high thermal conductive type sealant Hoshizaki America part number 4A0683 01 Silicone Heat Sink Compound 10 8108 manufactured by GC Electronics KE 4560 RTV manufactured by ShinEtsu Silicones or equivalent are recommended Secure the thermistor with the holder then insulate it Be very careful to prevent damage to the leads KM 650MWH M Tighten the water regulating valve flare nut to a torque of 39 8 ft Ib 53 9 N m Water Regulating Valve C Water Regulating Valve Adjustment water cooled model The water regulating valve is factory set and generally no adjustment is required However when necessary adjust the water regulator using the following procedure 1 Prepare a thermometer to check the condenser drain temperature Attach a pressure gauge to the high side line of the system 2 5 min after a freeze cycle starts confirm Adjustment Screw that the thermometer reads 104 F to 115 F 40 to 46 If it does not rotate the CW Higher adjustment screw by using flat
78. laimed refrigerant which meets ARI Standard 700 latest edition be used 6 A liquid charge is required when charging an R 404A system to prevent fractionation Place the service cylinder on the scales if the service cylinder is not equipped with a dip tube invert the service cylinder then place it on the scales Open the high side valve on the gauge manifold 7 Allow the system to charge with liquid until the proper charge weight is met 8 If necessary add any remaining charge to the system through the low side NOTICE To prevent compressor damage use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low side refrigerant access valve with the icemaker running 9 Close the high and low side gauge manifold valves then disconnect the gauge manifold hoses 10 Cap the refrigerant access valves to prevent a possible leak 53 Component Service Information NOTICE When replacing a component listed below see the notes to help ensure proper operation Component 1 phase Install a new start capacitor run capacitor and start relay 3 phase Install a new magnetic contactor Thermostatic Attach the thermostatic expansion valve bulb to the suction line in the same location as Expansion Valves the previous bulb The bulb should be between the 10 and 2 o clock positions on the tube Secure the bulb with the clamp and holder then insulate it Hot Gas Valves Rep
79. led condenser 1 Make sure the power supply is off then remove the front panel and right side panel 2 Close the condenser water supply line shut off valve If connected to a closed loop system also close the condenser return line shut off valve 3 Open the condenser water supply line drain valve If connected to a closed loop system also open the condenser return line drain valve 4 Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve 5 Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring While holding the valve open blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out 6 Close the drain valve s 7 Replace the right side panel and front panel in their correct positions 57 VII Disposal The appliance contains refrigerant and must be disposed of in accordance with applicable national state and local codes and regulations Refrigerant must be recovered by properly certified service personnel 58 VIII Technical Information A Specification Sheets 1 320 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY 115 60 1 9 7 A 5 Min Freeze AT 104 F WT 80 F 20A WATER TEMP
80. let 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model CS12K6E PFV 279 Remote Condenser Unit URC 9F Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve Condensing Pressure Regulator on URC 9F R404A 9 Ibs 4 oz 42009 Icemaker 5 16 5 oz Cond Unit 3 108 15 oz High 467PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin Remote Condenser Unit VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 71 14 901 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR
81. llow the instructions below 1 Remove the water from the icemaker water line 1 Turn off the power supply then remove the front panel 2 Close the icemaker water supply line shut off valve and open the icemaker water supply line drain valve 3 Allow the line to drain by gravity 4 Attach a compressed air or carbon dioxide supply to the icemaker water supply line drain valve 5 Make sure at least 3 min have elapsed since you turned off the power supply Make sure the control switch is in the ICE position Replace the front panel in its correct position then turn on the power supply 6 Blow the icemaker water supply line out using the compressed air or carbon dioxide supply 7 Close the icemaker water supply line drain valve 2 Remove the water from the water tank 1 Turn off the power supply then remove the front panel 2 Move the control switch to the OFF position 3 Remove the base cover then disconnect one end of the pump tubing to drain the water tank See Fig 6 After the water tank has drained reconnect the pump tubing 4 Replace the base cover and the front panel in their correct positions 5 Remove all ice from the dispensing unit ice storage bin Clean the storage bin liner using a neutral cleaner Rinse thoroughly gter ciganing Disconnect This I End of Pump Tubing to Water Tank Base Cover 3 water cooled model remove the water from the water coo
82. mal range replace the thermistor See Component Service Information If within the normal range continue to the next step 7 Replace the thermistor its correct position IV B Component Service Information 8 Reconnect the thermistor connector to CB K3 connector 9 Replace the control box cover in its correct position 10 Move the control switch to the ICE position 11 Replace the front panel in its correct position 12 Turn on the power supply 13 Once the harvest cycle starts Comp energizes begin timing the harvest cycle 14 The harvest timer and harvest cycle should terminate within 2 to 5 min If the harvest cycle does not terminate within 2 to 5 min replace CB Legend CB control board Comp compressor 36 Diagnostic Tables 1 No Ice Production No Ice Production Possible Cause 1 Power Supply Off blown fuse or tripped breaker b Not within specifications 2 Main Transformer Voltage tap switch not set to proper voltage 3 phase and KM 650MWH M Coil winding open or shorted only 208 230VAC 115VAC 3 Fuse Control Box Blown 4 Thermostatic Bin Control Tripped with bin filled with ice See 11 0 Bin Control Check Ambient temperature too cool Set too warm Bulb out of position Open contacts defective 5 Control Switch In OFF or WASH position 6 High Pressure Switch Dirty condenser Fan motor not operating Refrigerant overch
83. n Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostatic or Mechanical Bin Control Hermetic Model CS12K6E PFV 237 Air Cooled Fin and Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve R404A 2 10 15 oz 1320 High 467PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin VOLTAGE RANGE 187 253 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 69 12 901 AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER gal 24HR gal 100 Ibs WATER COOLED CONDENSER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSUR
84. nd Cleaning FS is used to determine that there is sufficient water in the water tank after the 1 min fill cycle and after each harvest cycle FS is also used to determine that the appropriate volume of water has been converted into ice before switching out of the freeze cycle No adjustment is required 1 Float Switch Check To check FS follow the steps below 1 Turn off the power supply 2 Remove the front panel then move the control switch to the OFF position 3 Remove the base cover then disconnect one end of the pump tubing to drain the water tank See Fig 3 After the water tank has drained reconnect the pump tubing 4 Remove the control box cover 5 Disconnect FS connector from CB connector Disconnect This End of Pump 6 Check for continuity across FS leads With Tubing to Drain the water tank empty FS should be open Water Tank If open continue to step 7 If closed follow the steps in II E 2 Float Switch Cleaning After cleaning FS check it again Replace if necessary Base Cover 7 Reconnect FS connector to CB K5 connector then replace the control box cover in its correct position 8 Move the control switch to the ICE position Replace the front panel in its correct position then turn on the power supply After 1 min the 1 min fill cycle should end and the initial harvest cycle should begin If the initial harvest cycle begins FS is good and the check is complete If the initial har
85. ng Legend CB control board Comp compressor CV check valve FM fan motor FMR fan motor remote FS float switch HGV hot gas valve HM headmaster C P R HPS high pressure switch LLV liquid line valve MBC mechanical bin control PM pump motor TBC thermostatic bin control TXV thermostatic expansion valve WRV water regulating valve WV inlet water valve 23 2 Control Board with Harvest Pump Timer Diagnosis 3 Power On Turn on the power supply then move the control switch to the ICE position A 5 sec delay occurs CB red POWER LED and green BC CLOSED LED turn on If yellow BC OPEN LED is on indicating a full bin check MBC Move ice away from MBC actuator paddle If yellow BC OPEN LED stays on see 11 0 2 Mechanical Bin Control MBC Check Note CB red POWER LED remains on unless the 10 5 VAC power supply is interrupted K2 connector Check CB using the steps in Control Board Check Confirm CB green BC CLOSED LED is on If CB yellow BC OPEN LED is on remove ice from BC If no ice is around BC and yellow BC OPEN LED is on see 1 0 2 Mechanical Bin Control MBC Check a Power On Diagnosis If CB red POWER LED is off confirm 10A fuse is good Check for 115VAC at control switch 1 BR to neutral W then at control switch 2 P to neutral W If 115VAC is present on 1 BR and not on 2 P replace control switch If 115VAC is present on control
86. nger Hot Gas Valve Cleaning Valve ae Discharge Line Compressor Thermostatic Expansion Refrigeration Circuit Check Valve ENENN Walter Circuit 13 lagnosis ll Sequence of Operation and Service D A Sequence of Operation Flow Chart 1 and Control Board without Harvest Pump Timer Operation uollisod 291 peoeld s JOYEM 19 UI A A UBYM yes JOU Burzniues pue ay 9501 duind INd ejejd pinbil AT1 y pue Jeziiues pue uedo Burueej y ejejd 10 episino eui Jezniues eui ojowu perjddns s YOUMS 20 59 uonisod HSVM 94 Ul ueuM ayewa eui pue Bulue 5 pesn sI y uo HSVAA 8u L uonisog HSVM 94 UI SI 1043405 y 2 5 4 Josseidwoo dwiog Bed 1xeu 996 pue uwopinus
87. of pump out direction FM and LLV de energize PM stops for 2 sec then reverses for 10 20 sec depending on pump out timer 54 dip switch 3 amp 4 setting When the pump out timer terminates pump out 28 is complete pump out frequency control 54 switch 5 amp 6 is factory set generally no adjustment is required However the pump out frequency control can be set to have a pump out occur every cycle or every 2 5 or 10 cycles For details see 4 Pump Out Frequency Control 34 dip switch 5 amp 6 Pump Out Diagnosis In the freeze cycle before pump out see table above after 5 min of freeze disconnect CB black K5 connector FS connector Check that PM stops and re starts and that PM rotation is correct water flowing down the drain through If PM does stop and re start check that CB LEDs 1 3 and 2 are If not replace CB If LEDs 1 3 and 2 are on and PM does not energize check for 115VAC at CB K1 5 DBU to neutral W If 115VAC is not present replace CB If 115VAC is present check that X10 relay is de energized If not check X11 relay status If X11 relay is energized replace CB If X11 relay is de energized and X10 relay is energized replace X11 relay contacts sticking If X10 relay is de energized check for 115VAC at terminal 6 DBU to neutral W and terminal 2 DBU to neutral W If 115VAC is present on terminal 6 DBU and not on terminal 2 DBU replace
88. oor use Normal operating ambient temperature should be within 45 F to 100 F 7 C to 38 C Allow 6 15 cm clearance at rear sides and top for proper air circulation and ease of maintenance and or service should they be required The appliance should not be located in a corrosive environment 4 1 Minute Fill Cycle LED 4 is on WV energizes After 1 min checks for closed FS If FS is closed harvest cycle begins If harvest cycle begins Comp HGV and FMR energize continue to step 5 If FS is open WV remains energized through additional 1 min fill cycles until water enters the water tank and FS closes low water safety protection during initial start up and at the end of each harvest Diagnosis Check that water enters the water tank If not check that the water supply line shut off valve is open and screens or external filters are clear Check for 115VAC at CB K1 6 O to neutral W If 115VAC is not present replace CB If 115VAC is present and WV does not energize check for 115VAC at WV If 115VAC is present check coil continuity If open replace WV If the water tank fills but the appliance fails to start harvest Comp energized check for open FS Float Switch Check and Cleaning If FS is closed and CB fails to start the harvest cycle after 1 min replace CB 5 Initial Harvest Cycle LEDs 1 4 and 2 are on WV continues Comp FMR and HGV energize CB monitors the warming of the evapora
89. r notice 63 6 600 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 lbs WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED REQUIRED OPERATING CONDITIONS 115 120 60 1 12 0 A 5 Min Freeze 104 F WT 80 F 1 WATER F 50 70 9 592 269 566 257 516 234 572 260 532 241 474 215 566 257 503 228 447 203 551 250 490 222 396 180 Crescent Cube 14 3 Ibs 6 5 kg 720 pcs N A 90 70 F 70 50 F 1190 5 7 1040 4 2 99 19 7 259 43 7 22 x 27 3 8 x 37 7 16 560 x 695 x 950 Stainless Steel Galvanized Steel Rear Net 169 Ibs 77 kg Shipping 200 Ibs 91 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT 3 8 OD Tube Float Switch Hot Gas and Water Thermistor and Timer
90. r refrigerant low side pressure should drop A 10 to 15 pound pressure swing between warm and cold conditions indicate a good If a 10 to 15 pound swing is not present replace TXV 9 WRV Diagnosis WRV is factory set and generally no adjustment is required If WRV fails to open in freeze check for proper refrigerant pressures See VIII B Performance Data If refrigerant pressures are correct and WRV does not open adjust or replace as needed See IV C Water Regulating Valve Adjustment water cooled models h Freeze Termination Diagnosis After 5 min in freeze disconnect CB K5 FS connector 15 sec later appliance should switch out of the freeze cycle 15 second delay after FS opens before terminating the freeze cycle If appliance remains in freeze longer than 15 sec after FS removed replace CB If appliance switches with FS removed but would previously not switch out of freeze with FS connected long freeze beep alarm see Float Switch Check and Cleaning Note Normal freeze cycle will last 20 to 40 min depending on model and conditions Cycle times and pressures should follow performance data provided in this manual See VIII B Performance Data i Short Freeze Cycle Diagnosis Confirm water tank fills and overflows during 1 min fill and harvest cycles If not check water supply filters shut off valve WV screen If water tank empties before 5 min timer terminates and freeze cycle is short check tha
91. ral W If 115VAC is present on terminal P and not on terminal 5 Y replace X10 relay If 115VAC is present on X10 relay terminal 7 Y and PM is not energized check for 115VAC at X10 relay terminal 4 R to neutral W and terminal 46 DBU to neutral W If 115VAC is present on terminal 46 DBU and not on terminal 4 R replace X10 relay If 115VAC is present on X10 relay terminal 4 R check control switch contact continuity between terminals 4 R and 5 R If contacts are open replace control switch If contacts are closed and 115VAC is present between control switch terminal 5 R and neutral W check PM capacitor and motor winding continuity 5c Initial Harvest Cycle Termination Diagnosis When the thermistor reaches 48 F 9 C CB reads 3 9 from the thermistor and turns harvest termination over to the harvest timer S4 dip switch 1 amp 2 Check discharge line temperature For a thermistor check see Thermistor Check If 1 min fill cycle starts after harvest timer terminates check that FS is clean and operating properly see Float Switch Check and Cleaning If FS is closed CB proceeds to the next cycle If not replace CB Note The minimum total time allowed by CB for a complete harvest cycle is 2 min Maximum harvest time allowed is 20 min NOTICE S4 dip switch 7 must remain on Otherwise PM will not energize during the last 50 sec of harvest 26 6 Freeze Cycle LED 1 is on
92. rmostatic LEAN e Bin Control Receiver Tank Float Switch Water Pump Drier Compressor Liquid Line Valve Mechanical Bin Control and Bracket Thermostatic Bin Control Bracket amp Bulb Holder Model Shown KM 901MRH 10 B Water Refrigeration Circuit Diagram 1 Air Cooled Models MAH Spray Tubes Condenser High Pressure Water Supply Switch Liquid Line Valve KM 515MAH Heat Thermistor Exchanger Strainer Hot Gas Valve Compressor Discharge Line Thermostatic Expansion Valve Refrigeration Circuit Walter Circuit Check Valve 11 2 Water Cooled Models MWH M Water Regulating Valve Condenser 7 gt Spray Tubes Inlet Water Valve zu Me ut gj Sin 5 Evaporator Water Supply Liquid Line Valve KM 320MWH and KM 515MWH Heat Thermistor Exchanger High Pressure Switch oo v Strainer Hot Gas Valve Refrigeration Circuit Water Circuit Check Valve 3 Remote Models MRH 3 Condenser Headmaster C P R Spray Tubes Valve Inlet Water Valve Water Supply 10 en Receiver High Pressure Switch Strainer Liquid Line Evaporator Valve Heat Thermistor Excha
93. rol box cover and base cover then clear any ice away from TBC bulb Disconnect TBC wires from TBC switch Hold your hand around the bulb to warm it up Check for continuity across TBC switch If closed continue to step 6 If open adjust or replace TBC 7 With the multimeter test leads still in place hold ice on TBC bulb to lower the temperature Within 10 sec TBC switch should open If it remains closed adjust or replace TBC a Legend TBC thermostatic bin control 31 2 Mechanical Bin Control Check and Cleaning a Mechanical Bin Control Check This appliance uses a lever actuated proximity switch to control the ice level in the storage bin No adjustment is required To check TBC follow the steps below 1 Turn off the power supply 2 Remove the front panel then move the control switch to the OFF position MBC Connector 3 Remove the control box cover and base cover then clear any to control ice away from MBC board K4 red 4 Check MBC wire harness connections See Fig 1 5 Disconnect MBC connector from 4 connector p 6 Check for continuity across the wires of MBC MBC connector When the actuator paddle MBC Wire is not engaged MBC switch is closed Harness white If open check that the wire harness Connector connector is properly connected and that Actuator the actuator paddle is not sticking Clean if Paddle necessary See II D 2 b Mechanical Bin
94. s off confirm closed TBC and 10A fuse is good If TBC is open remove ice from bulb and warm bulb in hand If does not close replace See 1 Thermostatic Bin Control Check Check for 115VAC at control switch 1 BR to neutral W then at control switch 2 P to neutral W If 115VAC is present on 1 BR and not on 2 P replace control switch If 115VAC is present on control switch 2 P check for 115VAC at HPS P to neutral W then HPS BK to neutral W If 115VAC is present at HPS P and not at HPS BK HPS is open See HPS Diagnosis below If 115VAC is present at HPS BK check for 10 5VAC at CB 2 1 red wire to CB 2 2 red wire If 10 5VAC is not present check that the cleaning valve is closed and the interlock switch is closed Next check CT continuity If open replace CT b HPS Diagnosis Check that the condenser coil is not clogged or restricted Let refrigeration circuit pressures equalize If HPS does not reset and pressures are equalized replace HPS If pressures are not equalized reclaim refrigerant and diagnose refrigeration circuit restriction Check that there are no restrictions in the refrigeration circuit Harvest Cycle HGV strainer or check valve Freeze Cycle FM FMR TXV HM LLV strainer check valve drier and damaged line set or fitting Also confirm WRV opens in freeze cycle Confirm that the location meets installation requirements The icemaker is not intended for outd
95. st pump timer do not adjust 3 off and 4 on Pump does not run in pump out rotation in this setting When a pump out is called for the pump motor stops for 2 sec then energizes in the reverse direction taking water from the bottom of the water tank and forcing pressure against the check valve seat allowing water to go through the check valve and down the drain At the same time water flows through the small tube to power flush the float switch The pump motor drains the water tank for the time determined by the pump out timer The pump out timer also acts in place of the harvest timer during cycles with a pump out The pump out timer is factory set and generally no adjustment is required However where water quality is bad and the icemaker needs a longer pump out time the pump out timer can be adjusted The pump out timer control can be set to pump out for 10 or 20 sec 4 Dip Switch Setting Time sec mietwate OFF 120 120 Open _ T1 Time to drain the water tank T2 Harvest timer at pump out 47 4 Pump Out Frequency Control 54 switch 5 6 Do not adjust on KM 515M_H without harvest pump timer Adjustments to this setting on KM 515M_H without harvest pump timer may adversely affect performance and warranty coverage The pump out frequency control is factory set to drain the water tank every 10 cycles on all 320 KM 600MAH KM 650M_H 901 and KM 515M
96. switch 2 P check for 115VAC at HPS P to neutral W then HPS to neutral W If 115VAC is present at HPS P and not at HPS BK HPS is open See HPS Diagnosis below If 115VAC is present at HPS BK check for 10 5VAC at CB K2 1 red wire to CB K2 2 red wire If 10 5VAC is not present check that the cleaning valve is closed and the interlock switch is closed Next check CT continuity If open replace CT b HPS Diagnosis Check that the condenser coil is not clogged or restricted Let refrigeration circuit pressures equalize If HPS does not reset and pressures are equalized replace HPS If pressures are not equalized reclaim refrigerant and diagnose refrigeration circuit restriction Check that there are no restrictions in the refrigeration circuit Harvest Cycle strainer or check valve Freeze Cycle FM FMR TXV WRV HM LLY strainer check valve drier and damaged line set or fitting Confirm that the location meets installation requirements appliance is not intended for outdoor use Normal operating ambient temperature should be within 45 F to 100 F 7 C to 38 C e Allow 6 15 cm clearance at rear sides and top for proper air circulation and ease of maintenance and or service should they be required e The appliance should not be located a corrosive environment 24 4 1 Fill Cycle LED 4 is WV and X11 relay energize After 1 min CB checks for closed FS If FS
97. t CV is not leaking by water flowing down the potable drain If CV is leaking by remove and clean CV replace rubber seat and spring if necessary If water tank is full see Float Switch Check and Cleaning for erratic operating FS 21 7 Pump Out Cycle LEDs 1 3 and 2 10 20 second pump out Timing of the first pump out is dependent E first pump out is after the first freeze cycle CB first pump out is determined by 54 dip switch 5 amp 6 See the table below E amp G Control Board Settings tstPump Out 4 Dip Switch Settin T 9 Pump Out E Control Board G Control Board Frequency 6 ON OFF ON Comp and FMR continue HGV energizes If S4 dip switch 3 amp 4 are set to 3 off and 4 on LED 4 turns on and WV energizes FM and LLV de energize PM stops for 2 sec then reverses for 10 20 sec depending on pump out timer S4 dip switch 3 amp 4 setting When the pump out timer terminates pump out is complete The pump out frequency control S4 dip switch 5 amp 6 is factory set and generally no adjustment is required However the pump out frequency control can be set to have a pump out occur every cycle or every 2 5 10 cycles For details see III C 4 Pump Out Frequency Control S4 dip switch 5 amp 6 Pump Out Diagnosis In the freeze cycle before pump out see table above disconnect CB black K5 connector FS connector after 5 min of freez
98. tch out of freeze with FS connected long freeze beep alarm see Float Switch Check and Cleaning Note Normal freeze cycle will last 20 to 40 min depending on model and conditions Cycle times and pressures should follow performance data provided in this manual See VIII B Performance Data i Short Freeze Cycle Diagnosis Confirm water tank fills and overflows during 1 min fill and harvest cycles If not check water supply filters shut off valve WV screen If water tank empties before 5 min timer terminates and freeze cycle is short check that CV is not leaking by water flowing down the potable drain If CV is leaking by remove and clean CV replace rubber seat and spring if necessary If water tank is full see Float Switch Check and Cleaning for erratic operating FS 7 Pump Out Cycle LEDs 1 3 and 2 are on 10 20 second pump out Timing of the first pump out is determined by S4 dip switch 5 amp 6 See the table below G Control Board Settings 4 Dip Switch Setting Pump Out 5 Frequency G Control Board After 2nd freeze cycle After 3rd freeze cycle After 6th freeze cycle After 11th freeze cycle Comp and FMR continue HGV energizes If S4 dip switch 3 amp 4 are set to 3 off and 4 on LED 4 turns on and WV and X11 relay energize energizing X10 relay NOTICE S4 dip switch 3 amp 4 must not be set to 3 off and 4 on Otherwise PM will rotate in freeze cycle direction instead
99. tem a 2 Freeze Up Defrost and clean the icemaker prior to diagnosing freeze up Fill out a freeze up checklist See the Hoshizaki America Technician s Pocket Guide or contact your local distributor for a copy of the freeze up checklist 1 Evaporator gt ube Guides 3 Spray Tubes and or Spray Guides Out of position 4 Water Supply c Insufficient water line size Minimum 1 4 Nominal ID 6 mm Nominal OD in the EU copper water tubing or equivalent 5 Inlet Water Valve a Screen or orifice clogged b Defective 6 Float Switch a Dirty sticking Float Switch Check b Defective and Cleaning 7 Refrigerant Charge a Low 8 Control Board a Harvest timer S4 dip switch 1 amp 2 set too short See III C Settings and b Harvest pump timer S4 dip switch 7 not in factory default position Adjustments and II C Control G control board 9 Bin Control a Actuator does not move freely 11 0 Bin Control Check 10 Thermistor a Loose disconnected or defective Thermistor Check 38 Bearing worn out or locked rotor Defective capacitor Water leaks causing short freeze time 11 Thermostatic Expansion Valve 12 Hot Gas Valve 18 Liquid Line Valve 1 Evaporator MO 7 2 Spray Tubes and or Spray Low 4 Control Board Control Board Check b Defective 6 Float Switch and Cleaning
100. the dip switch settings to assure that S4 dip switch 3 4 7 8 9 10 and S5 dip switch 1 through 5 G CB are in the factory default position S4 dip switch 1 2 5 6 are cleaning adjustments and the settings are flexible For factory default settings see Default Dip Switch Settings 2 Move the control switch to the ICE position If the red POWER OK LED is on control voltage is good continue to step 3 If the POWER OK LED is off check CT secondary circuit CT output is 10 5VAC at 115VAC primary input If the secondary circuit has proper voltage and the red LED is off replace CB If the secondary circuit does not have proper voltage check CT primary circuit Check for 115VAC at CB K1 connector pin 10 BR to neutral W for 115VAC Always choose a white W neutral wire to establish a good neutral connection when checking voltages For additional checks see II G 1 No Ice Production 3 The OUTPUT TEST button provides a relay sequence test Make sure the control switch is in the ICE position then press the OUTPUT TEST button For the correct lighting sequence see the table below Note that the order of the LEDs from the outer edge of the control board is 1 4 3 2 Components e g compressor cycle during the test Control Correct LED Board Lighting Sequence Following the test the icemaker begins operation at the 1 minute fill cycle for both E and G control boards If the LEDs do not light as des
101. the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 2 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG Do not use R 404A as a mixture with pressurized air for leak testing 3 Evacuation and Recharge R 404A 1 Attach a vacuum pump to the system Be sure to connect the charging hoses to both high and low side refrigerant access valves IMPORTANT The vacuum level and vacuum pump may be the same as those for current refrigerants However the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for POE oils 2 Turn on the vacuum pump Open the gauge manifold valves Never allow the oil in the vacuum pump to flow backwards 3 Allow the vacuum pump to pull down to a 29 9 Hg vacuum Evacuating period depends on pump capacity 4 Close the low side valve and high side valve on the gauge manifold 52 5 Disconnect the gauge manifold from the vacuum pump attach it to refrigerant service cylinder Remember to loosen the connection and purge the air from the hose For the required refrigerant charge see the rating label inside the icemaker Hoshizaki recommends only virgin refrigerant or rec
102. tic or Mechanical Bin Control Hermetic Model RST61C1E CAV 202 Water Cooled Tube in Tube Type Vertical Type Stainless Steel and Copper Thermostatic Expansion Valve 404 1 Ib 5 2 oz 6009 High 427PSIG Low 230PSIG High Voltage Cut Out Internal Auto Reset Overload Protector Internal Auto Reset High Pressure Control Switch Float Switch N A Ice Storage Bin VOLTAGE RANGE 187 253V AMBIENT TEMP 45 100 WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG Note We reserve the right to make changes in specifications and design without prior notice 66 9 KM 650MWH M AWAITING DATA Note We reserve the right to make changes specifications and design without prior notice 67 10 650 SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W 100 lbs WATER gal 24HR gal 100 Ibs EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CUBE CONTROL SYSTEM HARVESTING CONTROL SYSTEM ICE MAKING WATER CONTROL COOLING WATER CONTROL BIN CONTROL SYSTEM COMPRESSOR CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE P C BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION RE
103. tly CHOKING HAZARD Ensure all components fasteners and thumbscrews securely in place after the icemaker is serviced Make sure that none have fallen into the dispenser unit ice storage bin Make sure all food zones in the icemaker and dispenser unit ice storage bin are clean after service A Refrigeration Circuit Service Information A WARNING Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG Do not use R 404A as a mixture with pressurized air for leak testing NOTICE Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Do not leave the system open for longer than 15 min when replacing or servicing parts The Polyol Ester POE oils used in R 404A applications can absorb moisture quickly Therefore it is important to prevent moisture from entering the system when replacing or servicing parts Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow
104. to prevent possible freeze up issues Upon termination of the freeze timer the control board initiates the harvest cycle or pump out cycle After 2 consecutive freeze timer terminations the control board shuts down the icemaker In this case see II G 3 Low Ice Production for possible solutions The freeze timer is factory set and no adjustment is required Before changing this setting contact Hoshizaki Technical Support at 1 800 233 1940 for recommendations 8 Float Switch Selector 55 switch 1 G Control Board NOTICE Do not adjust This must be left in the factory default position or the icemaker will not operate correctly 9 Refill Counter S5 dip switch 2 through 5 G Control Board NOTICE Do not adjust These must be left in the factory default position or the icemaker will not operate correctly D Control Switch The control switch has three positions OFF for power off ICE for icemaking and WASH to energize the pump motor when cleaning and sanitizing 50 IV Refrigeration Circuit Component Service Information WARNING e This appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire e Move the control switch to the OFF position and turn off the power supply Place the disconnect in the OFF position Lockout Tagout to prevent the power supply from being turned back on inadverten
105. tor via the thermistor located on the suction line When the thermistor reaches 48 F 9 C CB reads 3 9 kO from the thermistor and turns harvest termination over to the harvest timer S4 dip switch 1 amp 2 The harvest timer has settings of 60 90 120 and 180 sec The pump out timer S4 dip switch 3 amp 4 acts in place of the harvest timer during cycles with a pump out S4 dip switch 5 amp 6 WV remains energized during harvest for a maximum of 6 min or the length of harvest whichever is shorter a Comp Diagnosis Check that evaporator is warming If not confirm that Comp energizes If not check for 115VAC at CB K1 1 or 9 V to neutral W If 115VAC is not present check for 115VAC CB K1 7 10 to neutral W If 115VAC is present at 7 or 10 BR and not at 1 9 V replace CB If 115VAC is present check for 115VAC at CR or MC solenoid If 115VAC is present confirm contacts are closed If not replace CR or MC If CR or MC contacts are closed check Comp external overload Comp start and run capacitors Comp start relay and Comp motor winding b HGV Diagnosis If Comp is energized and evaporator is not warming check that HGV energizes and opens Check for 115VAC at CB K1 2 P to neutral W If 115VAC is not present replace CB If 115VAC is present check for 115VAC at HGV coil and check HGV coil continuity Replace as needed Diagnosis Confirm LLV is de energized and closed not
106. vest cycle does not begin continue to step 9 9 Turn off the power supply 10 Remove the front panel Move the control switch to the OFF position 11 12 Disconnect FS connector from CB K5 connector 13 Check for continuity across FS leads With the water tank full FS should be closed If FS is closed and the icemaker will not switch from the 1 min fill cycle to the initial harvest cycle replace CB If FS is open confirm that the water tank is full If the water tank is not full check the water supply water filters and inlet water valve If the water tank is full follow the steps in 2 Float Switch Cleaning After cleaning FS check it again Replace if necessary Remove the control box cover Legend CB control board FS float switch 34 2 Float Switch Cleaning Depending on local water conditions scale may build up on FS Scale on the switch can cause the float to stick In this case FS should be cleaned 1 Turn off the power supply 2 Remove the front panel then move the control switch to the OFF position 3 Remove the base cover then disconnect one end of the pump tubing to drain the water tank See Fig 3 After the water tank has drained reconnect the pump tubing 4 Disconnect the vent tube and the flush tube from the top of FS then remove FS assembly and remove the rubber boot from the bottom of FS assembly See Fig 4 5 Remove the retainer rod from the bottom of FS
107. y 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG 100 38 TOTAL HEAT OF REJECTION FROM CONDENSER 15 400 BTU h 90 F 32 C WT 70 F 21 Note 1 Pressure data is recorded at 5 min into freezing cycle The data not in bold should be used for reference only 2 We reserve the right to make changes in specifications and design without prior notice 83 12 901 APPROXIMATE ICE AMBIENT TEMP CFPC 70 21 80 27 90 32 Ibs day kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPROXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day 100 38 FREEZING CYCLE TIME 70 21 80 27 90 32 min 100 38 HARVEST CYCLE TIME 70 21 80 27 90 32 min 100 38 HEAD PRESSURE 70 21 80 27 90 32 PSIG kg cm G 100 38 SUCTION PRESSURE 70 21 80 27 90 32 PSIG _ 100 38 TOTAL HEAT REJECTION FROM CONDENSER 13 500 BTU h 90 F 32 C WT 70 F 21 TOTAL HEAT OF REJECTION FROM COMPRESSOR 2 100 BTU h AT 90 F 32 C WT 70 F 21 C WATER FLOW FOR CONDENSER 100 gal h AT 100 F 38 C WT 90 F 32 C PRESSU
108. y Monthly External Water Check for proper pressure and change if necessary Filters Icemaker Exterior Wipe down with a clean soft cloth Use a damp cloth containing neutral cleaner to wipe off oil or dirt build up Clean any chlorine staining rust colored spots using a non abrasive cleanser Underside of Wipe down with a clean cloth and warm water Icemaker and Top Kits Bin Door and Snout Yearly Icemaker and Clean and sanitize per the cleaning and sanitizing instructions provided Dispenser Unit Ice in the instruction manual or maintenance label on the icemaker Storage Bin Liner system Clean the water supply inlet screen frequent cleaning may be required depending on location As Needed Marine Model If contaminated seawater enters the system flush with clean seawater or Condenser fresh water as soon as possible to minimize damage to the condenser 55 VI Preparing the Appliance for Periods of Non Use NOTICE e When storing the appliance for an extended time or in sub freezing temperatures follow the instructions below to prevent damage To prevent damage to the water pump do not operate the appliance with the control switch in the WASH position when the water tank is empty When the appliance is not used for two or three days under normal conditions it is sufficient to move the control switch to the OFF position When storing the appliance for an extended time or in sub freezing temperatures fo

Hoshizaki MRH/3 User's Manual

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