Home

Hoshizaki KMS-1400MLH User's Manual

1. a 52 T Can n ee EE 52 2 Sanitizing Procedure Following Cleaning Procedure 54 B MAM 1 rr a 54 C Preparing the Icemaker for Long Storage ee 55 I Specifications A Icemaker 1 KMS 1400MLH SRK 14H AC SUPPLY VOLTAGE 208 230 60 1 3 wire with neutral for 115V AMPERAGE 15A 5Min Freeze AT 104 F WT 80 F MINIMUM CIRCUIT AMPACITY 20A MAXIMUM FUSE SIZE 20A APPROXIMATE ICE PRODUCTION Ambient PER 24 HR Temp F EE nama aaa lbs day kg day 70 Reference without marks 80 90 1054 378 100 974 442 SHAPE OF ICE Crescent Cube ICE PRODUCTION PER CYCLE 24 lbs 10 9 kg 1248 pcs APPROXIMATE STORAGE CAPACITY N A ELECTRIC 8 WATER CONSUMPTION 90 70 F 70 50 F ELECTRIC W kVVH 100 lbs 2522 5 3 2354 4 4 WATER gal 24HR gal 100 Ibs 270 23 6 560 43 6 EXTERIOR DIMENSIONS WxDxH KMS 1400MLH 30 x 24 x 28 762 x 610 x 711 mm SRK 14H 50 x 17 x 28 1270 x 432 x 711 mm EXTERIOR FINISH KMS 1400MLH Stainless steel Galvanized steel Rear SRK 14H Galvanized steel WEIGHT KMS 1400MLH Net 143 Ibs 65kg Shipping 177 lbs 80kg SRK 14H Net 230 Ibs 104kg Shipping 273 lbs 124kg CONNECTIONS ELECTRIC Permanent Connection WATER SUPPLY Inlet 1 2 FPT DRAIN Outlet 3 4 FPT CONDENSATE DRAIN 5 8 OD Pipe CUBE CONTROL SYSTEM Float Switch HARVESTING CONTROL SYSTEM Hot Gas and Water Thermistor and Timer ICE MAKING WAT
2. A EA au iddns sare SEN Ht L MHS H TIN00r L SIA iagrams D iring B W al ON D H re 1 1 LAT 110 X907 ANA NI 7 1 WT 100 001 AWA Wel EX NASLLI ASOL y wm jndino 1euuojsuej 1 M ym ND a kal rr nm Y beer 2001 AN H to Si NIVAC ONINVIT ang mg l zo n 4 gl ana 0 0 lo a Mid d 4 4 Aya AD ja 2 KS be ya lo d i 101 MEN UI TOHINO ng 3 Eo z HU DIEN d y DINS to 7 Am A a ad wg o bi 0 300 1010 30 9o ngi 0 Lo Bo de ya ND QU 1 wl 2 i NDI 00 9 w 2 ES gt ND Aj AWN ayyy DEE po A o T g l EE wo w D o IT i I Jar to S A l VOL 3504 A ul TM to AS WH mg un mam y n ww TEN Wo ONIMIM H y 4 Xi Dt H S HE L N T 6 Tn m n ISO ett 0071 5 dal Lg sw 1 00 04 to 3 OVI
3. ABU Wu pieoq y P9S0 9 S 41 7 p8esop 41 2 avy suifeq 1 0214002 29505 skemje dnyeis eniu Q S OL 40 suni 1 ul YOJIMS usy pue 295 Z JO Jeo j 9401 sdois Jojow duma 1 eun II uinuuixeuu lnulu 1 111191 YUL JIPA 1 ojeuiulJ98 0 pesn uos Jeo Jaddn 1 HIINOOY L SIAM 40 11494 1 11491 qUe JOYEM ejeniul o pasn YAMS 1E01 JOMO7 e m s 1 uun 2 euin 2 WNWIKEW e I samnulu uun 2 unuulul N e ay9 9 mo dung 1 l A2 z 13 lt 0 1 2 u Jeuun lnulul G gt lt JOJUO9 10 1UO9 ul ul JO SIWIOY Jeuun lnulu O SejnuluJ Og uul 1S AHEU WNWIXEN e 1saney JO 08S 09 1S8 ay 10 suni pue sazibiaua Nd JOYOUS SI I A UD IUA D S OG SNU 15 jo ujBue ayy 40 sajnulw 9 si eu AMH SojnulUJ 9 3UII SAJEA 1S AHEU WNWIXEN e lt 11 sdeis l 42 1S AHEH Z anula SUN L lo o ul0L Aland 10 195 0126 uonejdedo JUsUOdWO pue yeys MOL a2uanbas HINOOY L SINM 14 C Control Board A HOSHIZAKI exclusive solid state control is employed in the KMS 1400MLH Modular Crescent Cuber All models are pretested and factory adjusted CAUTION Fragile handle very carefully A control board contains integrated circuits which are susceptible to failure due to static discharge t is especially important to to
4. ssssssssssssssa 19 b Harvest Timer S4 dip switch 1 amp sic 19 Pump Out Timer S4 dip switch 3 amp AN 20 d Pump Out Frequency Control S4 dip switch 5 amp 6 20 e Factory Use 54 Dip Switch 7 amp 8 anadir 20 f Freeze Timer S4 dip switch 9 amp Won 21 9 Float Switch Control and Refill Counter S5 dip switch 1 through 5 21 4 Control Board Check Procedure c roca das 21 5 Control Board Replacement mein ainda 22 D Harvest Control Thermistor e 22 E Floab SWIC li css u AA 23 it Explanation MOP EE 23 2 unu ab aetna kde bes a LU 23 3 Fl at Switeh Check e EEN 23 A E 25 il Explanallon Ol PE e E 25 2 Bin Control Check e EI 25 A A 26 CONO SW RR E E E E tn 26 2 OB VICO EE 26 a DRAIN REN 26 ei te 26 c WASH io ia 26 IL Technical NAO NR 27 A Water Circuit and Refrigeration Circuit sisi ii 27 B Wiring 812 12 E 28 T KMS 1400MLH SARA ici 28 2 KMS 1400MLH EE ri CILCM o F AA eA 7 29 3 Wire Harness 30 C Perf rmance Data siones ici gps 31 T KMS 1400MLH OBI A iii o 31 2 KMS 1400MLH REL CiCc m Y 32 17 Service DIAS ER 33 A 10 Minute Diagnostic Procedure uuu Aaaa 33 B Diagnostie e 36 1 No lce
5. 1 Sometimes moisture in the refrigerant circuit exceeds the drier capacity and freezes up at the expansion valve Always install a new drier every time the sealed refrigeration system is opened Install the new drier with the arrow on the drier in the direction of the refrigerant flow 2 t is advisable to change out both expansion valves when replacing an expansion valve 3 Connect the expansion valve bulb to the corresponding refrigeration circuit suction line 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the insulation and the expansion valve bulb on the suction line 5 Remove the expansion valve cover and disconnect the expansion valve Place the new expansion valve in position 6 Remove the drier then place the new drier in position Install the new drier with the arrow on the drier in the direction of the refrigerant flow 7 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG WARNING 1 Do not heat the wall of the machine Place a steel barrier for protection 2 Always protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve body exceeding 250 F 121 C 8 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 p
6. DINGS tr y mW A 9o i ni 300 1010 318 Lo fo 6o A ui i i L 16 OWE w 062 w A G 8 s M A 14 To 5 ya ya x 9 to d 412 4 d to A M A A amp OLYVINO 21L2NDVW 4 BAS a T en F mi m 9 To SIN yon Wu SsjWNH y n wm WE n Zo z ONIMIM H A 9 Lo NDD YQ ww i3 157 114007 5 ngi mni H e dii ya 7 A W0ISIWHHI Y Dien 242 oTo l g MOL de au ui 4 ya IVISORUSH zx IH x au JH CH L MMS mao k E 0910 2 807 2 KMS 1400MLH SRK 14H3 zl 67 l 68c zl 67 l 99c DISd Lc Zc 0 9194 1222 17 UO9IIMS i1nss ud jno jn2 nono YOUMS 1e1souueu uino jno jn9 29 3 Wire Harness Connections lenn N ATI A H do ONE vol osa ML p uuo A10 9e Hun SWA Alddns Jamod eseud 1 1 jddns 1amod eseud ajBuis 27 A EA ulI pinbil AT1 1onuo9 q2 586 104 4 nun Bulsu puoo Mus suon uuo2 SSIUJEH M ano e1man 1 dir ATI A H 27 SYUM M 1 OIA A yuld d U 5 N UMOJQ Hg yoclq Ma pOO 40102 30 C Performance Data 1 KMS 1400MLH SRK 14H ena AMBENT TEMP WATER TEMP FO F C 50 10 70 21 90 32 70 21 80 27 90 32 Ibs day kg day 100 38 APPROXIMATE ELECTRIC 70 21 CONSUMPTION 80 27 90 32 watts 100 38 APPR
7. IMPORTANT Ensure all components fasteners and thumbscrews are securely in place after any cleaning or maintenance is done to the equipment A Cleaning and Sanitizing Instructions HOSHIZAKI recommends cleaning this unit at least once a year More frequent cleaning however may be required in some existing water conditions WARNING To prevent injury to individuals and damage to the icemaker do not use ammonia type cleaners Always wear liquid proof gloves to prevent the cleaning and sanitizing solutions from coming into contact with skin Carefully follow any instructions provided with the bottles of cleaning and sanitizing solution Never run the icemaker when the water tank is empty 1 Cleaning Procedure 1 Dilute 22 fl oz 650 ml of the recommended cleaner Hoshizaki Scale Away or LIME A VVAY Economics Laboratory Inc with 4 gal 15 1 of warm water 2 Remove all ice from the evaporator and the dispenser unit storage bin Note To remove cubes on the evaporator turn off the power supply and turn it on after 3 minutes The harvest cycle starts and the cubes will be removed from the evaporator 3 Turn off the power supply Remove the front panel 4 Place the control switch in the SERVICE position Then place the service switch in the DRAIN position 5 Replace the front panel and turn on the power supply for 2 minutes 6 7 Remove the front panel 8 In bad or severe water conditions
8. Produc AI Ia 36 2 Evaporator 1S Frozen U E 39 3 Low lce 5 12 1176 pavor illinois 40 4 Abnormal eii 40 E E 40 V Removal and Replacement of Components 41 A Service for Refrigerant TE 41 L Refrigerant RECOvery E 41 PP PA nio en 42 3 Evacuation and Recharge R 404A a 42 A 43 1 Removal and Replacement of Compresseor na 43 2 Removal and Replacement of Condenser 44 3 Removal and Replacement of Hot Gas Valve and Liquid Line Valve 45 4 Removal and Replacement of Headmaster 46 5 Removal and Replacement of Fan Motor 46 A e UA A 47 1 Removal and Replacement of Evaporator 47 2 Removal and Replacement of Expansion Valve 48 3 Removal and Replacement of Hot Gas Valve and Liquid Line Valve 49 4 Removal and Replacement of Pump Motor 50 5 Removal and Replacement of Fill and Harvest Water Valve 222 50 6 Removal and Replacement of Thermistor 51 4 VI Gleani g and eege 52 A Cleaning and Sanitizing Instructions
9. a harvest control sensor The resistance varies depending on the suction line temperatures The thermistor detects the temperature of the evaporator outlet to start the harvest timer No adjustment is required If necessary check for resistance between thermistor leads and visually check the thermistor mounting located on the suction line next to the evaporator outlet Temperature F Temperature C Resistance kO 3 871 2474 9 32 tes Check a thermistor for resistance by using the following procedure e 6000 1 Disconnect the connector K3 on the board 2 Remove the thermistor See V C 6 Removal and Replacement of Thermistor 3 Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes 4 Check for a resistance between thermistor leads Normal reading is within 3 5 to 7 kO Replace the thermistor if it exceeds the normal reading 22 E Float Switch 1 Explanation of Operation The float operates 2 switches within the float switch The lower switch black and blue wires is used for low water safety protection initiating the freeze cycle refill and terminating the freeze cycle The upper switch black and red wires is used to terminate the freeze cycle refill only Refill will last until the upper float switch closes or the 1 minute countdown timer ends whichever comes first 2 Cleaning Depending on local water conditions scale may build up on the float fl
10. alarm 1 See II C 2 f LED Lights and Audible Alarm Safeties 2 Water continues to a Float Switch be supplied and the disconnected icemaker will not 2 Leads opened or 2 Check and replace start defective switch 3 Float does not move 13 Clean or replace b Control Board 1 Defective 1 Replace See II C 4 Control Board Check Procedure 3 Compressor will a Control Switch 1 SERVICE position 11 Move to ICE position not start or stops 2 Bad contacts 2 Check and replace operating b Control Board 1 Defective 1 See II C 4 Control Board Check Procedure Wire Harness Terminal 1 Loose connection 1 Tighten Ze Condensing Unit and Icemaker d Magnetic Contactor 1 Bad contacts 1 Check for continuity and replace 2 Coil 2 Coil winding opened opened 2 2 Replace e Starter s and replace 2 Coil winding opened 12 Replace Capacitor replace 2 Voltage too low 2 Increase voltage 3 Refrigerant 3 Recharge overcharged or undercharged 4 Line valve continues 4 Check line valves to close in freeze operation in freeze cycle cycle and overload and replace protector operates h Compressor 1 Wiring to compressor 1 Check for loose connection or open and replace 2 Defective 2 Replace 37 4 Water continues to a Fill or Harvest Water 11 Diaphragm does not 11 Check for water leaks with be supplied in freeze Valve close icemaker
11. clean the float switch as described below Otherwise continue to step 9 a Remove the right side panel b Disconnect the vent tube from the top of the float switch then remove the float switch and rubber boot c Twist the wire stem on top of the float switch housing to release the float assembly then lower it out of the housing d Wipe down the float switch housing shaft and float with cleaning solution Clean the inside of the rubber boot and hose with cleaning solution Rinse the parts thoroughly with clean water Turn off the power supply 52 e Reassemble the float switch Replace the rubber boot and the float switch in their correct positions Reconnect the vent tube f Replace the right side panel in its correct position 9 Remove the insulation panel by removing the thumbscrews then pour the cleaning solution into the water tank 10 Move the service switch to the WASH position 11 Replace the insulation panel and the front panel in their correct positions 12 Turn on the power supply to start the washing process 13 Turn off the power supply after 30 minutes Remove the front panel 14 Move the service switch to the DRAIN position 5 Replace the front panel and tum on the power supply for 2 minutes 15 16 Turn off the power supply and remove the front panel 17 Move the control svvitch to the ICE position 18 Replace the front panel in its correct position 19 Tum on the pow
12. in the WASH position power is supplied to the pump and wash valve This operation is used to circulate cleaner and sanitizer over both the inside and outside of the evaporator 26 HAIBA 491544 III Technical Information tion C igera it and Refr A Water C JUEL uoisuedx3 utrq uleiq ye3souay L Jossaidwog Jojpejnuinooy HAIBA yms 1201 J100 duind que 9Ur N s r ro NA NC Bueuosiq A BA f Set 10H SALE Sege H E s Ir TT Tera AN ma Hz Talin UDIH Li eur uonons 11 7 2 il i aano 90 gt As O nid eiqisn4 1 Tee E T s Jr N J u e11S in NLA CN m E II A BA Ee SS925V L T n C JoyeJode 3 HAIBA 10 enBay 223 eee SNA e J9 SeupesH 0115 x J su puoo ueq aun J9uQ ONE USEM JIM eqn Aeids Jeurens A BA
13. or moisture 2 Replace drier and trapped recharge b Compressor 1 Defective valve 1 Replace c Hot Gas Valve 1 Continues to open in 1 Check and replace freeze cycle d Liquid Line Valve 1 Continues to close in 1 Check and replace freeze cycle e Fill or Harvest Water 1 Water valve is wide 1 Check for water leaks Valve open during freeze outside of refill 2 Evaporator is Frozen Up Possible Cause Remedy 1 Freeze cycle time is a Float Switch 1 Leads short circuit or 1 Check and replace too long defective switch 2 Float does not move 2 Clean or replace freely b Fill or Harvest Water 1 Diaphragm does not 11 Check for water leaks Valve close c Control Board 1 Defective 1 See II C 4 Control Board Check Procedure 2 All ice formed on a Evaporator 1 Scaled up b i s evaporator does not Water Supply Line 1 Water pressure too 1 Check and get low recommended pressure fall into bin in harvest I cycle c Water Filter System 1 Dirty restricted 1 Replace filter d Harvest Water Valve 11 Dirty mesh filter or 1 Clean orifice 2 Diaphragm does not 12 Check for water leaks close e Ambient and or Water 11 Too cool 1 ncrease temperature Temperature f Liquid Line Valve 1 Continues to open in 11 Check operation in harvest harvest cycle cycle and replace g Thermistor 1 Out of position or 1 See V C 6 Removal loose attachment and Replacement
14. replace the control board 33 5 Freeze Cycle LED 1 is on The compressor fan motors and pump motor remain energized The liquid line valves energize and the hot gas valves de energize also de energizing the X1 relay The lower float switch activates open 2 times during the course of a freeze cycle the first is for refill the second is for freeze termination After the second lower float switch activation the control board terminates freeze and initiates harvest Every 10th cycle the control board initiates a 10 second pump out cycle between the freeze and harvest cycles See II C 3 d Pump Out Frequency Control a Lower Float Switch 1st Activation Refill LEDs 1 and 4 are on The refill can occur at any time during the freeze cycle 1 refill per cycle As ice builds the water level drops in the reservoir and the lower float switch activates opens LED 4 comes on and the control board energizes the fill water valve The fill water valve remains energized until the upper float switch closes or the 1 minute fill timer terminates whichever comes first b Lower Float Switch 2nd Activation LED 1 is on The unit is held in freeze by a 5 minute short cycle protection timer After the 1st lower float switch activation and refill ice continues to form and the water level drops in the reservoir When the lower float switch activates opens a second time the freeze cycle terminates freeze can only be terminated on the second act
15. the solenoid 5 Disconnect the valve body Remove the strainer and check valve if applicable 6 Place the new valve strainer and check valve in position 7 Remove the drier then place the new drier in position Install the new drier with the arrow on the drier in the direction of the refrigerant flow 8 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG CAUTION Always protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve body exceeding 250 F 121 C 9 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 10 Evacuate the system and charge it with refrigerant See the nameplate on the condensing unit for the required refrigerant charge 11 Cut the leads of the solenoid allowing enough lead length to reconnect using closed end connectors 12 Connect the new solenoid leads 13 14 15 Turn on the power supply Attach the solenoid to the valve body and secure it with a screw Replace the panels in their correct positions 49 4 Removal and Replacement of Pump Motor 1 Turn off the power supply 2 Remove the panels 3 Drain the water tank by removing the insulation panel front fra
16. 30 to 35 minutes depending on model and conditions Cycle times and pressures should follow performance data provided in this manual 34 6 Pump Out Cycle The 1st pump out occurs after the 11th freeze cycle and every 10th cycle thereafter LEDs 1 3 2 are on The compressor and fan motors remain energized The drain water valve hot gas valves and X1 relay energize the liquid line valves de energize The pump motor stops for 2 seconds then restarts for 10 seconds pump out frequency can be adjusted on S4 dip switches 5 and 6 This pump out removes contaminants from the water reservoir through the drain water valve and allows for a power flush of the float switch Diagnosis If the pump motor does not come on check the circuit and capacitor If water does not pump out remove the dran water valve housing and check clean the valve assembly check for voltage on the drain valve coil with LED 3 on make sure that the drain line is not clogged 7 Normal Harvest Cycle Same as the initial harvest cycle Return to step 4 Note Unit continues to cycle until bin control is satisfied or power is switched off The unit always restarts at the 1 minute fill cycle 35 B Diagnostic Charts 1 No Ice Production 1 The icemaker will not a Power Supply 1 Off blown fuse or 1 Turn on replace or reset Condensing Unit tripped breaker 2 Loose connections 2 Tighten 3 Bad contacts 3 Check for continuity and replace 4 Not
17. ER CONTROL Timer Controlled Overflow Pipe COOLING WATER CONTROL N A BIN CONTROL SYSTEM Mechanical Level Switch and Timer COMPRESSOR Hermetic Model CS18K6E PFV CONDENSER Air cooled Fin and Tube type EVAPORATOR Vertical type Stainless Steel and Copper REFRIGERANT CONTROL Thermostatic Expansion Valve Condensing Pressure Regulator REFRIGERANT CHARGE R 404A 16 Ib 5 oz 7400 g Icemaker 7 oz Comp Cond unit 15 Ibs 14 oz DESIGN PRESSURE High 467 PSIG Low 230 PSIG P C BOARD CIRCUIT PROTECTION High Voltage Cut out Internal COMPRESSOR PROTECTION Auto reset Overload Protector Internal REFRIGERANT CIRCUIT PROTECTION Auto reset High Pressure Control Switch LOW WATER PROTECTION Float Switch ACCESSORIES SUPPLIED N A REQUIRED Ice Storage Bin or Dispenser OPERATING CONDITIONS VOLTAGE RANGE 187 253 V AMBIENT TEMP KMS 1400MLH 45 100 F SRK 14H Outdoor use 20 122 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 2 KMS 1400MLH SRK 14H3 Intentionally Left Blank Note We reserve the right to make changes in specifications and design without prior notice 7 B Condensing Unit 1 SRK 14H AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE EXTERIOR DIMENSIONS WxDxH DIMENSIONS INCLUDING LEGS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC REFRIGERANT COMPRE
18. Hoshizaki America Inc Modular Crescent Cuber Serenity Series Model KMS 1400MLH Including Condensing Unit Model SRK 14H 3 SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com Ko evercheck Number 73162 Issued 2 28 2008 IMPORTANT Only qualified service technicians should attempt to install service or maintain this icemaker No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual Failure to service and maintain the equipment in accordance with this manual may adversely affect safety performance and warranty coverage HOSHIZAKI provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker Should the reader have any questions or concerns which have not been satisfactorily addressed please call write or send an e mail message to the HOSHIZAKI Technical Support Department for assistance HOSHIZAKI AMERICA INC 618 Highway 74 South Peachtree City GA 30269 Attn HOSHIZAKI Technical Support Department Phone 1 800 233 1940 Technical Service 770 487 2331 Fax 1 800 843 1056 770 487 3360 E mail techsupport hoshizaki com Web Site www hoshizaki com NOTE To expedite assistance all correspondence communication MUST include the following information e Model Number e Serial Number Complete and detailed explanation of the problem IM
19. Lovv Side Harvest VVater Valve Fill VVater Valve Control Box N Lo Control Board s Pump Motor Float Svvitch Bin Control Switch Control Switch Service Switch Drain Water Valve 10 2 Condensing Unit Fan Motor and Fan Blade Shut off Valve High Side Compressor lt o o o o 5 A Q AR bi MN ves amp E 8 A L Wi se WA o MEN 8 AAN K oe KE Y KAN m SC NAPE YA 2 55 7 oD 7 lt sP y E NES m 5 Ly ro Shut off Valve Lovv Side Control Box Junction Box Receiver Tank Thermostat Discharge Pipe Accumulator 11 B Sequence of Operation The steps in the sequence are as outlined below When power is supplied the red POWER OK LED and the green BC CLOSED LED on the control board come on If the yellow BC OPEN LED is on the unit will not start In this case clear ice away from the bin control actuator in the bin area A 5 second delay occurs at startup Note that the order of the green sequence LEDs from the outer edge of the board is 1 4 3 2 1 One Minute Fill Cycle LED 4 is on FWV opens and the fill period begins After 1 minute the board checks for a closed LF S If LF S is closed the harvest cycle begins If not FWV will remain energized through additional 1 minute cycles until water ente
20. NO TEN D zo D H d LIS ISA 98 t WOISINIHI JL Baach VIN O Q olo 4 gy 2 r SC LVISONGHHI xx Ix 9 n n ND OND 4 F I in ul n H7L gt AHS 10910EZ 807 4 6 4 6 ul n9 DIS LC ZC Kuel 1 KMS 1400MLH SRK 14H Jo 6 4 99c yno InD YOUMS 1e1souueu 0 154 fely 110 8JnssaJgd 28 WWW n m1 1 1 1 1 1 1 1 M AW 100 2207 ami NO W V et 100 2007 AWA Wm D ASLL Ye AGO hi omg TE INO dd ZX jndino JeuuoJsueJ 16 AW139 JAWA DN IX ul HIH 1347 Vti 7 n V ve s B3 NaH ND 5 Cu za ES Y 5 Ya r e ES MOT A d P 1 ds ALVA mim e ki avj AW H A o M MU 9 7 wo ZH mal oan 2015 7 ni geil oyan 3n u rg n d nq 1018 Get B sse AOI m 2 x d SC NS de men Ge SH ya LD ngi qu to V y us YN A ja x
21. OXIMATE WATER 70 21 CONSUMPTION PER 24 HR 80 27 90 32 gal day m day 100 38 FREEZING CYCLE TIME min HARVEST CYCLE TIME 80 27 90 32 min 100 38 HEAD PRESSURE 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 SRK 14H UNIT 25270 BTU h AT 90 F 32 C WT 70 F 21 C CONDENSER VOLUME SRK 14H UNIT 226 CU IN Note 1 Pressure data is recorded at 5 minutes 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 31 2 KMS 1400MLH SRK 14H3 Intentionally Left Blank Note 1 Pressure data is recorded at 5 minutes 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 32 IV Service Diagnosis A 10 Minute Diagnostic Procedure The 10 minute check out procedure is basically a sequence check which can be used at unit start up or for system diagnosis Using this check out procedure will allow you to diagnose electrical system and component failures in approximately 10 minutes under normal operating conditions of 70 F 21 C or warmer air and 50 F 10 C or warmer water temperatures Before conducting a 10 minute checkout check for correct installation proper voltage per unit nameplate and adequate water
22. PORTANT This manual should be read carefully before the icemaker is serviced or maintenance operations are performed Only qualified service technicians should install service and maintain the icemaker Read the warnings contained in this booklet carefully as they give important information regarding safety Please retain this booklet for any further reference that may be necessary CONTENTS lk Specifications cri root 6 A m 6 1 KMS 1400MLH SRK 14H sita rra 6 2 KMS 1400MLH EE E E wameanza 7 BoLondans nd KE EE 8 E EE E 8 NC ID o ald 9 Meco An 10 As CONS 10 LEES cui m 10 2 Condensing Uhika a ncn akun 11 B Sequence of OPE Musas 12 1 One Minute Fill Cycle uta 12 2 Initial Harvest Cycle a a a baa Haa 12 3 Freeze Gycle Me ER 12 A PUMP YC 12 5 Normal Harvest Cycle aote ipd sa e 13 C Conirol Board a 15 T Control EAE A Ra 16 TEE 17 a Maximum Water Supply Period 6 minutes z b Harvest Backup Timer and Freeze I7 c High Temperat re Safely st 17 d Low Water Salt 17 e High Voltage and Low Voltage Cut outs 2 17 f LED Lights and Audible Alarm Safeties AE 18 3 Controls and Adj stments_ E 19 a Default Dip Switch Settings a
23. Remove the discharge and suction pipes 7 Remove the compressor Unpack the new compressor package 8 Attach the rubber grommets of the prior compressor 9 Place the compressor in position and secure it using the bolts and washers 10 Remove the drier then place the new drier in position located in the icemaker Install the new drier with the arrow on the drier in the direction of the refrigerant flow 43 11 Remove the plugs from the suction discharge and process pipes 12 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 13 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 14 Evacuate the system and charge it with refrigerant See the nameplate on the condensing unit for the required refrigerant charge 15 Connect the terminals and replace the terminal cover in its correct position 16 Replace the panels in their correct positions 17 Turn on the power supply 2 Removal and Replacement of Condenser IMPORTANT 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 ref
24. SSOR CONDENSER COMPRESSOR PROTECTION FAN MOTOR PROTECTION REFRIGERANT CIRCUIT PROTECTION REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE OPERATING CONDITIONS ACCESSORIES SUPPLIED 208 230 60 1 3 wire with neutral for 115V Connection to icemaker 15A 5 Min Freeze 104 F WT 80 F 20A 20A 50 x 17 x 28 1270 x 432 x 711 mm 52 3 8 x 19 1 2 x 43 1330 x 495 x 1092 mm Galvanized steel Net 230 Ibs 104 kg Shipping 273 Ibs 124 kg Permanent Connection Suction line 1 1 8 12 UNF Fitting 11 Parker Liquid line 1 1 16 12 UNF Fitting 10 Parker Hermetic Model CS18K6E PFV Air cooled Fin and Tube type Auto reset Overload Protector Internal Thermal Protection Auto reset High Pressure Control Switch Condensing Pressure Regulator 15 Ibs 14 oz 7200 g High 467 PSIG Low 230 PSIG VOLTAGE RANGE 187 253 V AMBIENT TEMP Outdoor use 20 122 F Leg 2 pcs Hex Head Bolt w Washer M8 x 16 16 pcs Hex Nut M8 16 pcs Note We reserve the right to make changes in specifications and design without prior notice 2 SRK 14H3 Intentionally Left Blank Note We reserve the right to make changes in specifications and design without prior notice 9 II General Information A Construction 1 Icemaker Spray Tubes Liquid Line Valve Hot Gas Valve Service Valve High Side Drier VVash Valve Thermistor Service Valve
25. an motors the hot gas valves energize also energizing the X1 relay the harvest water valve energizes and the fill water valve de energizes The harvest water valve is open during harvest for a maximum of 6 minutes or the length of harvest minus 50 seconds whichever is shorter The pump motor energizes and runs for the last 50 seconds of harvest The evaporator warms and the thermistor senses 48 F 9 C The control board then receives the thermistor s 3 9 kO signal and turns operation of harvest over to the harvest countdown timer The last 50 seconds of the harvest countdown timer the harvest water valve de energizes and the water pump energizes LED 4 goes off and LED 3 comes on When the harvest countdown timer completes the freeze cycle starts Diagnosis Check if evaporator is warming up compressor and fan motors are on hot gas valves are open harvest water valve open If these are okay next check for at least 48 F 9 C on the suction line If the evaporator is cool check for inlet water too cold or liquid line valves stuck open If the suction line is at least 48 F 9 C disconnect the thermistor at the white K3 connector on the control board and check for resistance of 3 9 kO or less If different see ID Harvest Control Thermistor for check procedure Replace if necessary If resistance is 3 9 kO or less reconnect the thermistor to the white K3 connector on the control board If harvest does not terminate within 3 minutes
26. ant 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 10 Evacuate the system and charge it with refrigerant See the nameplate on the condensing unit for the required refrigerant charge 11 Replace the panels in their correct positions 12 Turn on the power supply 5 Removal and Replacement of Fan Motor Note When replacing a fan motor with defective winding it is recommended that a new capacitor be installed 4 2 3 4 Turn off the power supply Remove the panels Remove the closed end connectors from the fan motor leads Remove the fan motor bracket and fan motor 46 5 Install the new fan motor and replace the removed parts in the reverse order of which they were removed 6 Replace the panels in their correct positions 7 Turn on the power supply C Icemaker IMPORTANT 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 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 re
27. d below E of 5 Type of Alarm Evaporator Temp Check for harvest problem stuck HGV or temperature gt 127 F relay hot water entering unit stuck HM or 53 C shorted thermistor Harvest Backup Timer Check for open thermistor HGV not opening harvest gt 20 min for two TXV leaking by low charge or inefficient Comp cycles in a row 3 Freeze Timer Check for a float switch stuck closed up freeze gt specified setting HWV or FWV leaking by HGV leaking by for two cycles in a row PM not pumping TXV not feeding properly Timer is factory set using low charge HM not bypassing or inefficient S4 dip switch 9 amp 10 compressor To reset the above safeties press the ALARM RESET button with the power supply on Low Voltage Red LED will turn off if voltage protection 92Vac 5 or less operates High Voltage The control voltage safeties automatically reset 147Vac 5 or more when voltage is corrected Legend Comp compressor DWV drain water valve FMR remote fan motor FWV fill water valve HGV hot gas valve HM headmaster HWV harvest water valve LLV liquid line valve PM pump motor TXV thermostatic expansion valve 18 3 Controls and Adjustments a Default Dip Switch Settings The dip switches are factory adjusted to the following positions DpSwewe TT zlslalsl lrlsl lm S5 Dip Switch Do Not Adjust Freeze Timer 9 amp 10 S4 Dip Switch Normally off 8 Do
28. dena ay jo soeuns apisino ay Jano euin jo spoued p pu yx 104 Jeziriues pue Jaueaj9 aje noJio o pasn aq ued uonejJedo siu Ajuo duind y o p liddns 51 Jamog OU SUIBIP SIUL AEA pue duund y o p liddns si 1amog uonounj YORE jo s Iejep 10 M l Q UOIJBULIOJU OY ees HSVM PUB OHIO NIVHG Suonisod 8914 seu YOJIMS eu OPO ul SI y pue yms eui 0 Jewod s liddns yojms 017U09 ay uonisod 32IAH3S OY u USUM uoniSod 32IAH3S 1 Ul SI 04140 2 v USYM 21 sjueuoduio5 586 jou ADH SEA JOJEM III AMA JOJOW UB YNA UIBAP AMA Josse4duuoo dwog 21 ASH III emuiu 0 suini i ejo o pue sdois 10sseJduuoo u do si S 31 1I p zi s u p AT JUO 1 10 ADH p zI61 u p ueco GK p zi s u p AMA pezibueue AMA 21 AMA b 7 21 AMA sanu juos HIN S ZI H U A11 0 6 d 57 21 AMH s nunuo dwog S 41 01 1940 s nuluo Nd E 7 a pezi amp jeue AH uedo s 47 gt gt 998 QOL 40 seziBieue pauun uonejedo senunuoo YW poziGieuo op 27 UL pezibiaua 8 z seziDJeue oep Nd lo z 1j s nunuo dwog 2 Wd 2 duog 2 AMA puooes S yo uo S 41 yo uo S 41
29. drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or replacement has been made Do not leave the system open for longer than 15 minutes when replacing or servicing parts A Service for Refrigerant Lines WARNING 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 IMPORTANT The condensing unit is provided with two shutoff valves one on the low side one on the high side and also with an access valve on the receiver tank The icemaker unit is provided with two service valves one on the low side and one on the high side For refrigerant recovery evacuation and recharge of the system always use the access valve on the receiver tank for the high side and either the shutoff valve of the condensing unit or the service valve of the icemaker unit for the low side line 1 Refrigerant Recovery Using proper refrigerant practices recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere 41 2 Brazing WARNING Refrigerant R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F 80 C Refrigerant R 404A itself is not explosive or poisonous How
30. e Allow the line to drain by gravity 7 Disconnect the harvest water valve hose in the evaporator section and blow out the water line to the harvest water valve using compressed air or carbon dioxide This will clear water from the harvest water valve 8 Move the control switch to the OFF position 9 Move the service switch to the WASH position and the control switch to the SERVICE position 10 Using the same hose as with the harvest water valve blow out the wash valve using compressed air or carbon dioxide 11 Move the service switch to the CIRC position and the control switch to the OFF position 12 Remove the 4 hoses connected to the water tank Allow the tank and hoses to completely drain 13 Move the control switch to the ICE position 14 Using the fill water valve hose blow the water line out using compressed air or carbon dioxide This will clear water from the fill water valve 55 15 Move the control switch to the OFF position 16 Disconnect the float switch vent hose from the drain hose tee Move the service switch to the DRAIN position and the control switch to the SERVICE position 17 From the tee on the drain hose blow the drain water valve out using compressed air or carbon dioxide 18 Move the service switch to the CIRC position and the control switch to the OFF position 19 Reconnect the thermistor to the K3 connector on the control board Reconnect the water pump connec
31. e 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 lines 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 system service valves and service 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 service manifold 42 5 Disconnect the vacuum pump and attach a refrigerant service cylinder to the high side line Remember to loosen the connection and purge the air from the hose For the required refrigerant charge see the rating label inside the front panel on the icemaker or on the nameplate on the condensing unit Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No 700 88 be used 6 A liquid charge is recommended for charging an R 404A system Invert the service cylinder and place it on scales Open the high side valve on the service manifold 7 Allow the system to charge with liquid until the proper char
32. er supply to fill the water tank with water 20 Tum off the power supply after 3 minutes 21 Remove the front panel 22 Move the control switch to the SERVICE position then move the service switch to the VVASH position 23 Replace the front panel in its correct position 24 Tum on the povver supply to rinse off the cleaning solution 25 Tum off the power supply after 5 minutes 26 Remove the front panel 27 Move the service svvitch to the DRAIN position 28 Replace the front panel and tum on the power supply for 2 minutes 29 Tum off the power supply Remove the front panel 30 Repeat steps 17 through 29 three more times to rinse thoroughly Note If you do not sanitize the icemaker go to step 13 in 2 Sanitizing Procedure 53 2 Sanitizing Procedure Following Cleaning Procedure 1 Dilute 2 fl oz 60 ml or 4 tbs of a 5 25 sodium hypochlorite solution chlorine bleach with 4 gal 15 1 of warm water N Remove the insulation panel if it is in its normal position C2 Pour the sanitizing solution into the water tank A Move the service switch to the WASH position al Replace the insulation panel and the front panel in their correct positions o Turn on the power supply to start the sanitizing process 7 Turn off the power supply after 15 minutes Remove the front panel 00 Move the service switch to the DRAIN position 9 Replace the front panel and turn on the power su
33. es of ice from forming on the evaporator the control board will only shut down the machine within the first 5 minutes of the freeze cycle If ice pushes the lever in after the first five minutes of the freeze cycle the control board will allow the machine to complete the freeze cycle and the following harvest cycle before shutting down the machine 2 Bin Control Check Procedure 1 Clear any ice away from the bin control 2 Turn the control switch to ICE 3 Check that the green BC CLOSED LED on the control board is on 4 Activate the bin control actuator press the actuator in Check that the yellovv BC OPEN LED on the control board is on 5 Disconnect the red K4 bin control connector from the control board 6 Check for continuity across the bin control leads When calling for ice the bin control proximity svvitch should be closed f open replace the bin control Activate the bin control actuator press the actuator in check for continuity across the bin control leads The bin control proximity switch should be open If closed replace the bin control 7 Reconnect the red K4 connector Allow the machine to cycle into the freeze cycle n the first 5 minutes of the freeze cycle activate the bin control actuator press the actuator in The yellovv BC OPEN LED should come on and the machine should tum Off If not replace the control board Bin Control Fig 2 Bin Contro 77 Open Bin Control Svvitch Closed bin ful
34. ever when exposed to high temperatures open flames R 404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Do not use silver alloy or copper alloy containing arsenic 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 1 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 2 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 itis important to make connections outside the evaporator case when possible If itis necessary to braze inside the evaporator case use sandpaper to remove the coating from the brazing connections before unbrazing the components 3 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 th
35. ge weight is met 8 If necessary add any remaining charge to the system through the low side Use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low side access port with the unit running 9 Close the service manifold valves the two refrigerant access valves and disconnect the service manifold hoses 10 Cap the access valves to prevent a possible leak B Condensing Unit 1 Removal and Replacement of Compressor IMPORTANT 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 Note When replacing a compressor with a defective winding be sure to install the new start capacitor and start relay supplied with the replacement compressor Due to the ability of the POE oil in the compressor to absorb moisture quickly the compressor must not be opened more than 15 minutes for replacement or service Do not mix lubricants of different compressors even if both are charged with R 404A except when they use the same lubricant 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the terminal cover on the compressor and disconnect the compressor wiring 5 Remove the hold down bolts washers and rubber grommets 6
36. he solenoid allowing enough lead length to reconnect using closed end connectors 12 13 14 15 Connect the new solenoid leads Attach the solenoid to the valve body and secure it with a screw Replace the panels in their correct positions rr gt Turn on the power supply 45 4 Removal and Replacement of Headmaster Condensing Pressure Regulator C P Regulator IMPORTANT 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 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Before heating break off the stub on the dome to release the dome charge 5 Disconnect the headmaster 6 Place the new headmaster in position 7 Remove the drier then place the new drier in position located in the icemaker Install the new drier with the arrow on the drier in the direction of the refrigerant flow 8 Braze all fittings with nitrogen gas flowing at a pressure of 3 to 4 PSIG CAUTION Always protect the headmaster body by using a damp cloth to prevent it from overheating Do not braze with the headmaster body exceeding 250 F 121 C 9 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refriger
37. ines otherwise performance may be reduced 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 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the screw and the solenoid 5 Disconnect the valve body Remove the strainer and check valve 6 Place the new valve and strainer in position 7 Remove the drier then place the new drier in position located in the icemaker Install the new drier with the arrow on the drier in the direction of the refrigerant flow 8 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG CAUTION Always protect the valve body by using a damp cloth to prevent the valve from overheating Do not braze with the valve body exceeding 250 F 121 C 9 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 10 Evacuate the system and charge it with refrigerant See the nameplate on the condensing unit for the required refrigerant charge 11 Cut the leads of t
38. ivation of the lower float switch and after 5 minutes of freeze Diagnosis Minimum freeze time is 5 minutes During the first 5 minutes of freeze confirm that the evaporator temperature drops compressor fan motors pump motor and liquid line valves are energized and that the hot gas valves harvest water valve and fill water valve except during refill are de energized and not bypassing Make sure the expansion valves are operating properly and in cold conditions make sure the headmaster C P Regulator is operating correctly Make sure that the drain water valve is not leaking by water flowing down the potable drain Check for proper unit pressures see 11 Performance Data or an inoperative compressor Disconnect the black K5 float switch connector from the control board 15 seconds after disconnecting the black K5 float switch connector LED 4 comes on and refill begins Connect the black K5 float switch connector back on the control board When the refill is finished LED 4 goes off disconnect the black K5 float switch connector again f 5 or more minutes have elapsed in the freeze cycle the unit should switch out of the freeze cycle After the unit switches out of freeze reconnect the black K5 float switch connector to the control board If the unit remains in freeze with the float switch disconnected replace the board To check the float switch see II F 3 Float Switch Check Procedure Note Normal freeze cycle will last
39. l calling for ice 25 G Switches Two control switches are used to control operation in KMS Series Modular Crescent Cubers These switches are referred to as the control switch and the service switch and are located on the control box 1 Control Switch The control switch has three positions OFF for power off ICE for icemaking and SERVICE to activate the service switch 2 Service Switch When the control switch is in the SERVICE position the control switch supplies power to the service switch and the machine is in service mode The service switch has three positions DRAIN CIRC and WASH See the information below for details of each function Note 1 When the service switch is activated power is supplied to the water pump in all three positions 2 When the control switch is in the OFF position or in the ICE position the service switch has no power and can be left in any position a DRAIN The KMS series utilizes a pump out drain system When the service switch is active and placed in the DRAIN position power is supplied to the pump and drain valve b CIRC When the service switch is active and placed in the CIRC position power is supplied to the pump only This operation can be used to circulate cleaner for extended periods of time over the outside surface of the evaporator c WASH The KMS series utilizes a solenoid operated wash bypass valve When the service switch is active and placed
40. ll the way up both float switch contacts should be closed If either float switch contact fails the assembly should be replaced 5 Turn the control switch to OFF 6 Drain the reservoir water 7 As water drains the float switch contacts should open Check continuity of the upper float switch contacts using the black and red wires and the lower float switch contacts using the black and blue wires With the float positioned all the way down both float switch contacts should be open If either float switch contact fails the assembly should be replaced 8 Reconnect the black K5 connector to the control board when finished 23 Black Common Blue Lower Switch m Red Upper Svvitch Mechanical Lock Housing SS sis Ss Upper Switch Lower Switch JI AI KW ya a as Retainer Clip Fig 1 Float Switch 24 F Bin Control This machine uses a lever actuated proximity switch mechanical bin control to control the ice level in the storage bin No adjustment is required 1 Explanation of Operation The bin control is connected to the red K4 connector on the control board When the bin control is calling for ice proximity switch closed green LED BC CLOSED on the control board continues icemaking operations When the bin control is activated in the bin full position proximity switch open yellow LED BC OPEN on the control board shuts down the unit However to prevent incomplete batch
41. me and suction hose See Fig 3 4 Disconnect the pump suction and discharge hoses Front Frame 5 Unplug the vvater pump connector Thumbscrew 6 Remove the screws and pump motor Fig 3 bracket 7 Remove the pump housing and check the impeller 8 If the impeller is defective install a new impeller 9 Install the new motor or new parts and replace the removed parts in the reverse order of which they were removed 10 Turn on the power supply and check for leaks 11 Replace the panels in their correct positions 5 Removal and Replacement of Fill and Harvest Water Valve 1 Turn off the power supply 2 Close the water supply line shut off valve 3 Open the water supply line drain valve and let the water supply line drain 4 Remove the panels 5 Remove the valve outlet tubing and fitting nut 6 Disconnect the terminals from the water valve 7 Remove the bracket and water valve from the unit 8 Install the new water valve and replace the removed parts in the reverse order of which they were removed 9 Close the water supply line drain valve 10 Open the water supply line shut off valve 11 Turn on the power supply and check for leaks 12 Replace the panels in their correct positions 50 6 Removal and Replacement of Thermistor CAUTION Fragile handle very carefully Always use a recommended sealant high thermal conductive type Model KE4560RTV manufact
42. move the coating from the brazing connections before unbrazing the components 1 Removal and Replacement of Evaporator 1 Turn off the power supply 2 Remove the panels and insulation pieces 3 Recover the refrigerant and store it in an approved container 4 Remove the spray tubes and the insulation at the U shaped notch where the refrigeration tubing passes through the molded chassis 5 Disconnect the evaporator tubing 6 Remove the pop rivets securing the evaporator then lift out the evaporator 7 Install the new evaporator 8 Remove the drier then place the new drier in position Install the new drier with the arrow on the drier in the direction of the refrigerant flow 9 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 10 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 11 Evacuate the system and charge it with refrigerant See the nameplate on the condensing unit for the required refrigerant charge 12 Replace the removed parts in the reverse order of which they were removed 13 Replace the insulation pieces and the panels in their correct positions 14 Turn on the power supply 47 2 Removal and Replacement of Expansion Valve IMPORTANT
43. not adjust 7 Pump Out Frequency Control 5 amp 6 Pump Out Timer 3 amp 4 Harvest Timer 1 8 2 b Harvest Timer S4 dip switch 1 2 The harvest timer starts counting when the thermistor reads 48 F 9 C at the evaporator outlet No adjustment is required under normal use as the harvest timer is adjusted to the suitable position 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 will decrease 24 hour production Dip Switch Setting Time ds ime seconds OFF OFF 19 c Pump Out Timer S4 dip switch 3 amp 4 During cycles when a pump out is called for the pump motor drains the water tank for the time determined by the pump out timer T1 The pump out timer s harvest timer T2 acts in place of the harvest timer S4 dip switch 1 amp 2 during cycles with a pump out The pump out timer is factory adjusted and no adjustment is required Dip Switch Setting Harvest Water n we re Valve orr OFF 10 to Coses OFF ON to 120 Open T1 Time to drain the water tank T2 Harvest timer at pump out Depending on the pump out frequency control setting dip switch 5 amp 6 pump out occurs every cycle or every 2nd 5th or 10th cycle d Pump Out Frequency Control S4 dip switch 5 amp 6 The pump motor drains the water tank at the frequency set by the pump out fre
44. ntrol thermistor Connector K4 Mechanical Bin Control S5 Dip Switch factory set do not adjust Connector K5 Float Switch Label board revision level indicated on label on side of relay Connector K1 Pins 1 through 10 11 9 Magnetic Contactor 2 Hot Gas Valves HGV Water Valve Relay 3 Liquid Line Valves LLV 4 Pump Motor icemaking 5 Pump Motor harvest 6 Fill Water Valve FWV 7 10 Supply Voltage 8 Open Switch for C board and ALPINE board service boards only 2 Features a Maximum Water Supply Period 6 minutes The harvest water valve will be open during harvest for 6 minutes or the length of harvest minus 50 seconds whichever is shorter b Harvest Backup Timer and Freeze Timer The harvest backup timer shuts down the icemaker if for two cycles in a row the harvest cycle takes more than 20 minutes to complete The control board will signal this problem using 2 beeps every 3 seconds The freeze timer shuts down the icemaker if for two cycles in a row the freeze cycle takes longer than the time specified to complete The control board will signal this problem using 3 beeps every 3 seconds The time is factory set using S4 dip switch 9 8 10 The alarm reset button on the control board must be pressed with power on to reset either of these safeties c High Temperature Safety The temperature of the suction line in the refrigeration circuit is limited by the high temperature safe
45. oat switch shaft and inside the housing Scale on the float or shaft can cause the float to stick causing erratic operation The float switch should be cleaned and checked before replacing First disconnect the black K5 float switch connector from the control board and remove the float switch and rubber boot from the icemaker Remove the rubber boot from the float switch Twist the mechanical lock at the top of the float housing and lower out the float and float shaft Remove the retainer clip from the shaft and slide the float off the shaft Soak the switch assembly in ice machine cleaner Wipe down the shaft float housing and rubber boot with cleaning solution See VI Cleaning and Maintenance Instructions 3 Float Switch Check Procedure Before replacing a float switch that you suspect is bad make sure the float switch has been cleaned This procedure will help you verify your diagnosis The float switch has three wires The black wire is common The blue wire is for the lower float switch contact and the red wire is for the upper float switch contact 1 Disconnect the black K5 float switch connector from the control board 2 Drain the reservoir water 3 Turn the control switch to ICE 4 As water fills the reservoir the float switch contacts should close Check continuity of the lower float switch contacts using the black and blue wires and the upper float switch contacts using the black and red wires With the float positioned a
46. of Thermistor h Control Board 1 Defective 1 See II C 4 Control Board Check Procedure 3 Other Spray Tubes 1 Clogged ive 2 Out of position 2 Place in position b Water System c Refrigerant 1 Undercharged 1 Check for leaks and recharge Expansion Valve 1 Bulb out of position or 1 Place in position loose attachment 2 Replace e Hot Gas Valve 1 Coil winding opened 1 Replace 2 Plunger does not 2 Replace move 3 Wiring to hot gas 3 Check for loose valve connection or open and replace f Water Supply Line 1 Too small requires 1 Increase water line size 1 2 OD line dedicated per machine 9 Water Filter 1 Flow rate too small 1 Replace with filter that has larger flow rate 39 a d 3 Low Ice Production Possible Cause 1 Freeze cycle time is a See chart 1 3 Also check dirty condenser coil ambient temperature and long refrigerant charge b See chart 2 1 and check float switch water valves and control board 2 Harvest cycle time is a See chart 2 2 and check evaporator water supply line harvest water valve ambient and or water temperature liquid line valve thermistor and control board 4 Abnormal Ice Possible Cause 1 Small cubes a Ice Cube Guide or Ice 1 Out of position 1 Place in position Separator Circulated water falls into bin b See chart 1 5 and check water supply line water valves water system
47. off cycle outside of b Control Board 1 Defective 1 See II C 4 Control Board refill Check Procedure 5 No water comes from a Water Supply Line 1 Water pressure too 1 Check and get spray tubes Water low and water level in recommended pressure pump will not start or water tank too low freeze cycle time is b Fill or Harvest Water 11 Dirty mesh filter or 1 Clean too short Valve orifice and vvater level in vvater tank too lovv c VVater System 1 VVater leaks vvater leaks and replace 3 Drain valve leaking by 3 Check assembly and clean 1 Motor winding 1 Replace opened d Pump Motor 2 Bearing vvorn out 2 Replace 3 Wiring to pump motor 3 Check for loose connection or open and replace 4 Defective capacitor 14 Replace 5 Defective or bound 5 Replace or clean impeller 6 Mechanical seal worn 16 Check and replace out e Control Board 1 Defective 1 See II C 4 Control Board Check Procedure 6 Fan motor will a Fan Motor 1 Motor winding 1 Replace not start or is not opened operating 2 Bearing worn out 2 Replace 3 Wiring to fan motor 13 Check for loose connection or open and replace 4 Defective capacitor 4 Replace 5 Fan blade bound 5 Check and replace b Magnetic Contactor 1 Bad contacts 1 Check for continuity and replace 7 All components a Refrigerant 1 Undercharged 1 Check for leaks and run but no ice is recharge produced 2 Air
48. onds The icemaker also automatically stops in cases of insufficient voltage 92Vac 5 or less The control board will signal this problem using 6 beeps every 3 seconds When the proper supply voltage is resumed the icemaker automatically starts running again 17 f LED Lights and Audible Alarm Safeties The control board includes LED indicator lights audible alarm safeties and an output test The red LED indicates control voltage and will remain on unless a control voltage problem occurs At startup a 5 second delay occurs while the board conducts an internal timer check A beep occurs when the control switch is moved to the ICE position 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 board is 1 4 3 2 For more information see II B Sequence of Operation LED Energized TimelEDsareOn LEDs are On E Components 1 Minute Fill Cycle 4 Fw 60seconds Harvest Cycle 1 4and2 Comp FMR 2 minutes 120 minutes 3 to 5 minutes Last 50 seconds of harvest HVVV de energizes and PM energizes LEDs 1 3 and 2 are on Freeze Cycle 1 and 4 at Comp FMR 15 minutes freeze timer 30 to 35 refills PM LLV setting minutes FVVV at refill Pump Out Cycle 7 4 3 and Comp FMR 10 seconds 20 seconds pump out HVVV PM timer setting HGV DWV The built in safeties shut down the unit and have alarms as liste
49. or 60 seconds whichever is shorter After UF S closes FWV closes 3 seconds later The KMS 1400MLH refills 1 time After the refill the freeze continues until LF S opens again The freeze cycle is then terminated provided the 5 minute freeze timer has expired 4 Pump Out Cycle The 1st pump out occurs after the 11th freeze cycle and every 10th cycle thereafter LEDs 1 3 and 2 are on Comp and FMR continue to run DWV opens HGVs open LLVs close PM stops for 2 seconds PM restarts pumping water from the water tank through the DWV and down the drain At the same time water flows through the vent tube to power flush the F S After 10 seconds the pump out is complete The pump out frequency control is factory adjusted to drain the water tank every 10 cycles and 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 See II C 3 d Pump Out Frequency Control 5 Normal Harvest Cycle LEDs 1 4 and 2 are on Comp FMR and HGVs remain energized HWV and X1 relay energize PM stops As the evaporator warms the thermistor reaches 48 F 9 C The control board then receives the thermistor s 3 9 KQ signal and starts the harvest timer When the harvest timer completes its count down the harvest cycle is complete The minimum total time allowed by the board for a complete harvest cycle is 2 minutes HWV is energized during harvest for a maximum of 6 minutes
50. or the length of harvest minus 50 seconds whichever is shorter LED 4 goes off when HWV closes PM energizes and runs for the last 50 seconds of harvest LED 3 comes on when PM energizes At the end of harvest the control board checks the position of LF S and proceeds to the freeze cycle if it is closed or calls for a 1 minute fill if it is open The unit continues to cycle through freeze and harvest cycles until the bin control activates opens and shuts the unit down Note To prevent incomplete batches of ice from forming on the evaporator the control board will only shut down the machine within the first 5 minutes of the freeze cycle If ice pushes the bin control actuator in open after the first five minutes of the freeze cycle the control board will allow the machine to complete the freeze cycle and the following harvest cycle before shutting down the machine Legend Comp compressor DWV drain water valve FMR remote fan motor F S float switch FWV fill water valve HGV hot gas valve HWV harvest water valve LF S lovver float switch contacts LLV liquid line valve PM pump motor UF S upper float switch contacts 13 Joye10deAe BU JO sesejins apisino pue episul eui uloq Jano J zl lues pue Jeueej o eje noJio o p sn s uonejedo siy aaea ysem pue duind eu o parjddns 51 1amoy 91061 00 U91IMS eoj Joddn S 4N J030u1 duund Nd SAJeA eui pinbil A17 S 98 U09 US EOI 19M0 S 341 SALA JOYEM SOAJEU AMH JOye 0
51. pply for 2 minutes Turn off the power supply Remove the front panel Repeat steps 17 through 29 in 1 Cleaning Procedure two times to rinse thoroughly wech mk O gt a N Repeat steps 1 through 11 above one more time Move the control switch to the ICE position 14 15 Replace the front panel in its correct position Clean the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 16 Turn on the power supply to start the automatic icemaking process B Maintenance IMPORTANT This icemaker must be maintained individually referring to the instruction manual and labels provided with the icemaker 1 Stainless Steel Exterior To prevent corrosion wipe the exterior occasionally with a clean and soft cloth Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up 2 Dispenser Unit Storage Bin and Scoop e Wash your hands before removing ice Use the plastic scoop provided bin accessory The dispenser unit storage bin is for ice use only Do not store anything else in the dispenser unit storage bin Clean the scoop and the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 3 Condenser Check the condenser once a year and clean if required by using a brush or vacuum cleaner More frequent cleaning may be required depending on location 54 C Prepa
52. pump motor and control board c Drain Water Valve 1 Leaking 1 Check and replace 2 Cloudy or irregular a See chart 2 1 and 2 3 and check float switch water valves control board cubes spray tubes water system refrigerant charge and expansion valve bJ Spray Guide c Water Quality 1 High hardness or 1 Install a water softener or contains impurities filter 5 Other Possible Cause 1 icemaker will not stop a Bin Control 1 Defective 1 Replace when bin is filled with ice b Control Board 1 Defective 1 See II C 4 Control Board Check Procedure 2 Abnormal noise a Pump Motor 1 Bearings worn out 1 Replace b Fan Motor 1 Replace 2 Fan blade deformed 12 Replace fan blade 3 Fan blade does not 3 Replace move freely c Compressor 1 Bearings worn out or 1 Replace cylinder valve broken 2 Mounting pad out of 12 Reinstall position d Refrigerant Lines 1 Rub or touch other 1 Reposition lines or surfaces often melts b Icemaker and Bin 1 Drains not run 1 Separate the drain lines separately 40 V Removal and Replacement of Components IMPORTANT 1 Ensure all components fasteners and thumbscrews are securely in place after the equipment is serviced The Polyol Ester POE oils used in R 404A units can absorb moisture quickly Therefore it is important to prevent moisture from entering the system when replacing or servicing parts Always install a new
53. quency control The pump out frequency control is factory adjusted to drain the water tank every 10 cycles and 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 as shown in the table below ETA Switch m2 Frequency No 5 5 N66 6 OFF OFF eveycyde e Factory Use S4 Dip Switch 7 amp 8 Factory set for optimum performance Do not adjust 20 f Freeze Timer S4 dip switch 9 amp 10 CAUTION Adjust to proper specification or the unit may not operate correctly The freeze timer setting determines the maximum allowed freeze time to prevent possible freeze up issues Upon termination of freeze timer the control board initiates the harvest cycle After 2 consecutive timer terminations the control board shuts the machine down In this case see IV B 3 Low Ice Production for possible solutions The freeze timer is factory adjusted and no adjustment is required Dip Switch Setting Time minutes g Float Switch Control and Refill Counter S5 dip switch 1 through 5 Do not adjust These must be left in the factory default position or the unit will not operate properly The KMS 1400MLH refills 1 time 4 Control Board Check Procedure Before replacing a control board 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
54. ressure using nitrogen gas 140 PSIG DO NOT use R 404A as a mixture with pressurized air for leak testing 9 Evacuate the system and charge it with refrigerant See the nameplate on the condensing unit for the required refrigerant charge 10 Attach the expansion valve bulb to the suction line in the same location as the previous bulb The bulb should be at the 12 o clock position on the tube Be sure to secure the bulb with the clamp and holder and to insulate it 11 Place the new expansion valve cover in position 12 Replace the panels in their correct positions 13 Turn on the power supply 48 3 Removal and Replacement of Hot Gas Valve and Liquid Line Valve CAUTION The icemaker unit has 1 hot gas valve and 1 liquid line valve The hot gas valve has a strainer prior to the valve body It is advisable to change the strainer and check valves when replacing the hot gas valve Always use a copper tube of the same diameter and length when replacing the hot gas and liquid lines otherwise performance may be reduced 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 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Remove the screw and
55. rigerant flow 1 Turn off the power supply 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Disconnect the condenser refrigerant tubing 5 Remove the condenser 6 Place the new condenser in position and secure with the mounting screws 7 Remove the drier then place the new drier in position located in the icemaker Install the new drier with the arrow on the drier in the direction of the refrigerant flow 8 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 9 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 10 Evacuate the system and charge it with refrigerant See the nameplate on the condensing unit for the required refrigerant charge 11 Replace the panels in their correct positions 12 Turn on the power supply 44 3 Removal and Replacement of Hot Gas Valve and Liquid Line Valve CAUTION The condensing unit has 1 hot gas valve and 1 liquid line valve Both valves have a strainer prior to the valve body It is advisable to change the strainer when replacing the hot gas or liquid line valve Always use a copper tube of the same diameter and length when replacing the hot gas and liquid l
56. ring the Icemaker for Long Storage CAUTION When shutting off the icemaker for an extended time drain out all water from the water tank and remove the ice from the dispenser unit storage bin The dispenser unit storage bin should be cleaned and dried Drain the icemaker to prevent damage to the water supply line at sub freezing temperatures using air or carbon dioxide Shut off the icemaker until the proper ambient temperature is resumed When the icemaker is not used for two or three days it is sufficient to only move the control switch to the OFF position unless the icemaker will be at sub freezing temperatures 1 Remove the water from the inlet water supply line See Fig 11 1 Remove the front panel 2 Move the control switch to the OFF position Confirm that the service switch is in the CIRC position 3 Remove the front insulation front frame right side panel and control box cover 4 Disconnect the thermistor from the K3 connector on the control board and unplug the water pump connector at the water pump 5 Wait 3 minutes then move the control switch to the ICE position Confirm that the bin control switch is closed and calling for ice The green BC CLOSED LED on the control board should be on 6 Once LED 1 and 2 on the control board energize the order of the LEDs from the outer edge of the control board is 1 4 3 2 close the inlet water supply line shut off valve and open the inlet water supply line drain valv
57. rs the sump and LF S closes This serves as a low water safety to protect the water pump 2 Initial Harvest Cycle LEDs 1 4 and 2 are on Comp FMR HGVs HWV and X1 relay energize FWV closes The control board monitors the warming of the evaporator via the thermistor located on the suction line When the thermistor reaches 48 F 9 C the control board reads a 3 9 kQ signal from the thermistor and turns harvest termination over to the adjustable harvest timer which is factory set for normal conditions The timer has settings of 60 90 120 and 180 seconds S4 dip switch 1 amp 2 When the harvest timer completes its count down the harvest cycle is complete and the freeze cycle starts The minimum total time allowed by the board for a complete harvest cycle is 2 minutes HWV is open during harvest for a maximum of 6 minutes or the length of harvest minus 50 seconds whichever is shorter LED 4 goes off when HWV closes PM energizes and runs for the last 50 seconds of harvest LED 3 comes on when PM energizes At the end of harvest the control board checks the position of LF S and proceeds to the freeze cycle if it is closed or calls for a 1 minute fill if it is open 3 Freeze Cycle LED 1 is on Comp FMR and PM continue to run LLVs open HGVs close For the first 5 minutes the control board will not terminate the freeze cycle As ice builds and LF S opens FWV opens LED 4 is on when FWV is open The refill will last until U FS closes or f
58. supply As you go through the procedure check to assure the components energize and de energize correctly If not those components and controls are suspect 1 Turn power off and access the icemaker s control box Clear any ice from the bin control actuator located in the bin 2 Turn power on and place the control switch in the ICE position A 5 second delay occurs The red POWER OK LED and the green BC CLOSED LED on the control board come on 3 One Minute Fill Cycle LED 4 is on The fill water valve is energized After 1 minute the control board checks for a closed lower float switch If the lower float switch is closed the harvest cycle begins If closed continue to step 4 If the lower float switch is open the fill water valve will remain energized through additional 1 minute fill cycles until water enters the sump and the lower float switch closes low water safety protection during initial start up and at the end of each harvest Diagnosis If the fill water valve does not open check for no supply voltage at water valve terminals bad coil or plugged screen or external filter no water flow If the reservoir fills but the unit fails to start harvest check for open lower float switch see II F 3 Float Switch Check Procedure or bad 1 minute timer in control board See II C 4 Control Board Check Procedure 4 Initial Harvest Cycle LEDs 1 4 and 2 are on The contactor coil energizes to start the compressor and f
59. tor 20 Close the inlet water supply line drain valve 21 Remove all ice from the dispenser unit storage bin and clean the dispenser unit storage bin liner using a neutral cleaner Rinse thoroughly after cleaning 22 Turn off the power supply 23 Replace all removed parts and panels in their correct positions Harvest Water Valve Hose Harvest Water Valve Wash Valve Fill Water Valve Fill Water Valve Hose Drain Water Valve Float Switch Vent Hose Suction Hose Drain Hose Tee Fig 5 56
60. ty This protects the unit from excessively high temperatures If the evaporator temperature rises above 127 7 F 53 4 C the control board reads a 804 kQ signal from the thermistor and operates the safety This shuts down the circuit and the icemaker automatically stops The control board will signal this problem using 1 beep every 3 seconds The alarm reset button on the control board must be pressed with power on to reset the safety d Low Water Safety The control board checks the position of the lower float switch at the end of the initial one minute water fill cycle and at the end of each harvest cycle If the lower float switch is closed the control board proceeds to the next cycle If the lower float switch is open the control board calls for a one minute water fill cycle After one minute the control board checks the position of the float and either proceeds to the next cycle if the lower float switch is closed or calls for an additional one minute fill if the switch is open This serves as a low water safety to protect the water pump e High Voltage and Low Voltage Cut outs High voltage and low voltage cut outs help protect the icemaker from supply voltages outside of the accepted range If miswiring causes excessive voltage 147Vac 5 or more for 3 seconds on the control board the high voltage cut out shuts down the circuit and the icemaker automatically stops The control board will signal this problem using 7 beeps every 3 sec
61. uch the metal part of the unit when handling or replacing the board Do not touch the electronic devices on the board or the back of the board to prevent damage to the board Do not change wiring and connections Do not misconnect K3 K4 and K5 because the same connector is used for the thermistor mechanical bin control and float svvitch Always replace the whole board assembly if it goes bad Do not short out power supply to test for voltage 15 1 Control Board Layout Control Products G Control Board Alarm Reset Button Output Test Button used to test relays on board S4 Dip Switch Bin Control Switch Closed LED green Bin Control Switch Open LED yellow Part Number Alarm Buzzer LED 2 green Hot Gas Valves HGV Power LED red lights when power is supplied to the board LED 3 green Pump Motor PM PM on but LED off at freeze cycle LED 4 green Fill Water Valve FWV when LED 2 is off Harvest Water Valve HWV when LED 2 is on LED 1 green Compressor Comp E ICAC EE x 242 sio EI Bos x F BC CLOSED SS EE m de o06v8209 d o S ER nn sm tdi on E SES a EH Resi Nino m MM EBEN CD Connector K2 Transformer Part Number Control Board 2A3792 01 factory 2A3792 02 service 16 Connector K3 Harvest Co
62. ured by SHINETSU SILICONE Part Code 60Y000 11 or Part Code 4A0683 01 equivalent Always use a recommended foam insulation Non absorbent Type or equivalent Do not shorten or cut the thermistor leads when installing 1 Turn off the power supply Thermistor Lead Cable Tie 44 ZZ Z xi 3 Remove the control box cover 4 Disconnect the thermistor leads from the K3 connector on the control board 5 Remove the plastic cable ties foam insulation thermistor holder and 2 Remove the panels SS 1422 AZA UA CA A E thermistor Foam Insulation Thermistor Holder 6 Scrape away the old sealant on the thermistor holder and the suction pipe Fig 4 7 Wipe off moisture or condensation on the suction pipe 8 Smoothly apply recommended sealant KE4560RTV Part Code 60Y000 11 or 4A0683 01 to the thermistor holder concave 9 Attach the new thermistor to the suction pipe in the same position as the previous thermistor Be very careful to prevent damage to the leads Secure it using the thermistor holder and recommended foam insulation 10 Secure the insulation using plastic cable ties 11 Connect the thermistor leads through the bushing of the control box to the K3 connector on the control board Note Do nat shorten or cut the thermistor leads 12 Replace the control box cover and the panels in their correct positions 13 Turn on the power supply 51 VI Cleaning and Maintenance
63. within 4 Refer to nameplate and specifications correct b Water Supply 1 Water supply off or 1 Check and get pressure too low recommended pressure c High Pressure Control 1 Open contacts 1 Check for continuity let reset or replace 3 Refrigerant 3 Recharge overcharged 4 Fan not operating 4 See chart 1 6 5 Refrigerant line or 5 Clean and replace drier components plugged d Thermostat 1 Open contacts 1 Let cool and reset Check Condensing Unit High for continuity and replace Temperature Safety if open e Wire Harness Terminal 1 Loose connection 1 Tighten Block Condensing Unit and Icemaker f Fuse lcemaker fused 11 Blown 1 Check for short circuit and disconnect if any correct Reset or replace g Fuse 10A fuse in 1 Blown 1 Check for short circuit and icemaker replace h Control Switch 1 OFF position 1 Move to ICE position 2 Bad contacts 2 Check for continuity and replace 1 Open windings 1 Replace with ice 2 Proximity switch stuck 2 Replace bin control open open replace 36 Possible Cause Remedy o 1 The icemaker will not Fill Water Valve 1 Mesh filter or orifice qd AAA start continuted clogged 2 Coil winding opened 2 Replace 3 Wiring to water valve 3 Check for loose connection or open and replace m Control Board 1 Defective 1 See 11 C 4 Control Board Check Procedure n Control Board in Alarm 11 Audible
64. your diagnosis 1 Check the S4 and S5 dip switch settings to assure that they are in the factory default positions 2 Turn the control switch to ICE and check for proper control voltage If the red LED is on the control voltage is good If the red LED is off check the control transformer circuit 3 Check the 115 volt input at the wire harness terminals and the 10 pin connector Check the brown and white wire at pin 10 to a white neutral wire for 115 volts Always choose a white neutral wire to establish a good neutral connection when checking voltages On the 10 pin connector a jumper also feeds 115 volts into pin 7 If no voltage is present check the 115 volt supply circuit 4 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 The correct lighting sequence should be 1 4 3 2 Some components e g the compressor will cycle during the test Note that the order of the relays from the outer edge of the board is 1 4 3 2 After checking the sequence the unit automatically starts at the 1 minute fill cycle If the LEDs light in a different sequence the control board is bad and should be replaced 21 5 Control Board Replacement The dip switches should be adjusted to the factory default settings as outlined in this manual S4 dip switch 8 must remain off D Harvest Control Thermistor A thermistor semiconductor is used for

Hoshizaki KMS-1400MLH User's Manual

Contents

Download Pdf Manuals

Related Search

Related Contents