Service Manual
Contents
1. AC SUPPLY VOLTAGE FAN MOTOR EXTERIOR DIMENSIONS WxDxH DIMENSIONS INCLUDING LEGS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC REFRIGERANT CONDENSER FAN MOTOR PROTECTION REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE OPERATING CONDITIONS ACCESSORIES SUPPLIED 115 60 1 Connection to Icemaker 115 V Total 1 3FLA 65W 32 3 16 x 15 11 16 x 21 15 16 817 x 398 x 558 mm 34 5 16 x 18 1 8 x 36 15 16 871 x 460 x 938 mm Galvanized Steel Net 81 Ibs 37 kg Shipping 92 Ibs 42 kg Permanent Connection Discharge Line 1 1 16 12 UNF Fitting 10 AEROQUIP Liquid Line 5 8 18 UNF Fitting 6 AEROQUIP Air cooled Fin and tube type Thermal Protection Condensing Pressure Regulator R 404A 316 14 8 oz 17809 High 467 PSIG VOLTAGE RANGE 104 127 V AMBIENT TEMP 20 122 F Leg 2 pcs Hex Head Bolt w Washer 8x16 8 pcs Hex Nut 8 8 pcs Note We reserve the right to make changes in specifications and design without prior notice 10 General Information A Construction 1 KML 631MAH air cooled Water Supply Condenser Inlet Fan Motor Spray Tubes i pray lu Hot Gas Valve Wash Valve Inlet Water Valve Junction Box Drain Valve Expansion Valve Water Pump Control Box Float Switch uz Control Compresso2. 0 3 JUHM M o L3 Zo 300 40710 34M i i Zo yo 391 35 8 19 bo 9 i tol 1 y S 6o Q O 0 1 A 2 47 ele j 9 Em oT Eee 7 aie amp MS 1 0 LE amp to O O o T M a B Cop BID mm wona ug Y CD k QuVOO YOLSINYJHL 3604 WYLNSN 1 09 062 900 29 OlSd Lc Z7c OISd 3078 1H9r1 g1 LINN 33643040 3104384 H31V3H ISYIANYYI MOTI A amp 0000 09 3118 ov a neg AS OL QV d 05094 53 AVAD AB JAVA JONVYO 0 y PT did YJLYM d y DV 18 ka UIS M NMOU8 1 m 300 4010 34M WIA DA d amp 1 9 0 9 WIN WIN 0 0 0 0 1 1 9o 1 5 E WI 2 HDLINS t Ms LYOTd IND M i vo Wu CS DN 9009 XENON Hoo So UHL 3513 IS ASH 04 1 1 09 062 802 30 C Performance Data 1 KML 631MAH air cooled APPROXIM
3. 14 C Control eet 16 Board 17 2 M PT CP 18 a Maximum Water Supply Period 6 18 b Harvest Backup Timer and Freeze 18 c High Temperature Safety 18 d Cow Water raporuna E 18 High Voltage and Low Voltage Cut outs 18 f LED Lights and Audible Alarm 2 19 8 Conipols ang AdIUSITIB a C D D 20 a Default Dip Switch Settings cauia pex ERE Erde E aea 20 b Harvest Timer dip switch 1 amp 2 20 c Pump Out Timer 8 4 21 d Pump Out Frequency Control dip switch 5 amp 6 21 Freeze Timer dip switch 9 amp n ru E EREEEEEMERX ERR EE 22 4 Control Board Check PEGOBUUEFG opina a d E e RAO ERE Rud 22 5 Control Board MEE 22 D Harvest Control Thermistor dual OPE E Red 23 RR TN RN RR TE 23 E SWIICIIES La soe cere M E 23 1 Control iea 23 PNIS Ice Me
4. Inlet Water Valve 1 Dirty mesh filter or 1 Clean too short orifice and water level in water tank too low c Water System 1 Water leaks 1 Check connections for water leaks and replace 2 Clogged d Pump Motor 1 Pump relay bad 1 Replace 2 Motor winding opened 2 Replace 37 5 No water comes from d Pump Motor 3 Replace spray tubes Water continued 4 Wiring to pump motor 4 Check for loose pump will not start or connection or open and freeze cycle time is replace too short continued 5 Defective capacitor 5 Replace 6 Defective or bound 6 Replace and clean impeller e Control Board 1 Defective 1 See 1 4 Control Board Check Procedure 6 Fan motor will a Fan Motor 1 Motor winding opened 1 Replace not start or is not operating 2 Bearing worn out 2 Replace 3 Wiring to fan motor 3 Check for loose connection or open and replace 4 Defective capacitor 4 Replace 5 Fan blade bound 5 Check and replace b Control Board 1 Defective 1 See 4 Control Board Check Procedure 7 All components a Refrigerant 1 Undercharged 1 Check for leaks and run but no ice is recharge produced 2 Air or moisture 2 Replace drier and trapped recharge 1 Defective valve 1 Replace b c Hot Gas Valve 1 Continues to open in 1 Check and replace freeze cycle d Line Valve 1 Continues to close in 1 Check and replace if applicabl
5. BLACK digits on label P N 2 1410 01 Connector K5 Float Switch Relay LEDs 4 indicate which relays are energized as listed below lo o o WS Part Number LED 2 RB D Connector K1 Hot Gas Valve HGV 2 v RU x3 L Pins4 through 10 Self Contained Fan cm 118 4H 9 Magnetic Contactor Motor FMS FMS R 1 2 Hot Gas Valve off when LED on E 9 219 3 Line Valve LED 3 E Rom Self Contained Fan Motor FMS Pump Motor PM m S 4 Pump Motor icemaking on at pump out only 0 58 5 Pump Motor drain ip Le 6 Water Valve LED 4 Y X 6 i 7 10 Power line bin control Water Valve WV is 14 4 4 8 Open LED 1 GICHA R6 o Switch for C board Compressor Comp e dm Q and ALPINE board Remote Fan Motor fi a n g o o service boards only FMR 4 RIB X Transformer Connector Control Board 2 1410 01 factory 241410 02 service HOS 0014 Control Products 10 Pin 17 2 Features a Maximum Water Supply Period 6 minutes Inlet water valve opening in the harvest cycle is limited by the harvest timer The water valve cannot remain open longer than the maximum period The water valve can
6. shown in the table below Dip Switch Setting Frequency 6 FF EE every 2 cycles every 5 cycles every 10 cycles 21 e Freeze Timer 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 machine initiates the harvest cycle After 2 consecutive timer terminations machine will shut down possibly indicating a problem The freeze timer is factory adjusted and no adjustment is required Time Lor or eo 50 ON ON 60 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 your diagnosis 1 Check the dip switch settings to assure that 3 4 7 8 9 amp 10 are in the factory default position Switches 1 2 5 amp 6 are cleaning adjustments and the settings are flexible 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 10 pin connector Check the brown wire at pin 10 to a white neutral wire for 115 volts Always choose a white neutral wire to establish a good neutral conne
7. 2 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 3 Always replace the strainer when replacing the hot gas valve 45 1 Turn off the power supply Remove the panels Recover the refrigerant and store it in an approved container Remove the screw and the solenoid A Disconnect the valve If replacing the hot gas valve also remove the strainer Place the new valve and strainer if applicable in position Remove the drier then place the new drier in position N 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 9 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 10 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker 11 Cut the leads of the 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 the screw Replace the panels in their correct positions
8. 40 Possible Cause 2 Abnormal noise c Compressor 2 Mounting pad out of 2 Reinstall continued continued position d Refrigerant Lines 1 Rub or touch other 1 Replace lines or surfaces 3 Ice in storage bin a Drain Line s 1 Plugged often melts b Icemaker and Bin 1 Drains not run 1 Separate the drain lines separately Ice Cube Guide 1 Out of position 1 Place in position Circulated water falls into bin 41 V Removal and Replacement of Components IMPORTANT Ensure all components fasteners and thumbscrews are securely in place after the equipment is serviced 2 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 3 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 Do not leave the system open for longer than 15 minutes when replacing or servicing parts A Service for Refrigerant Lines WARNING Do not use R 404A as a mixture with pressurized air for leak testing Refrigerant leaks can be detected by charging the unit with a trace of refrigerant raising the pressure with nitrogen and using an electronic leak detector 1 Refrigerant Recovery The icemaker unit is provided with refrigerant access valves Using proper refrigerant practice
9. 631MWH C 0 and Later B Wiring Diagram 0189 227782 Olsdzz 4e umno OlSd 2 v8 ino4no M U21IMS 13101 i j d 450 44 44 ago HET 440 4 3 0 3ONYHO de 30 20 20 20 40 0 460 540 4 440 440 44 u0 H3 ON SON 70N SON VON EON 79 1149 1 d ILI HDI U6 2 Fh ok Sod H 7138 110 3d 102 381 ONL jc TAD ony M SELL E r1 L 4001 5 VJA 1 T V n Y 190 Ley Wh vj ives Um 1 ie ay apros E 1 e HT p LES umm HS ea 1 1 A 1 31 VES 3 1 10H El 1 1 D _ a TM FHM ni A 2 i 2 KML 631MRH 0 and Later 22726 umno
10. Close the water supply line shut off valve Remove the panels Remove the tubing attached to the valve If replacing the inlet water valve loosen the fitting nut Be careful not to lose the washer 5 Disconnect the terminals from the water valve 6 Remove the bracket and valve from the unit 7 Install the new water valve Replace the removed parts in the reverse order of which they were removed If replacing the inlet water valve make sure the washer is in place in the fitting nut 8 9 10 11 Open the water supply line shut off valve Turn on the power supply Check for leaks Replace the panels in their correct positions 50 NT a L Removal and Replacement of Pump Motor 1 Turn off the power supply 2 Remove the front panel 3 Remove the three screws and the float switch assembly 4 Disconnect the pump motor wiring connector and the ground wire 5 Disconnect the hoses attached to the pump motor assembly 6 Remove the four screws and the pump motor 7 Install the new pump and replace the removed parts in the reverse order of which they were removed Be sure to connect the ground wire 8 Turn on the power supply and check for leaks 9 Replace the front panel in its correct position 51 VI Cleaning and Maintenance Instructions IMPORTANT Ensure all components fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipme
11. F 32 C PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG 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 3 KML 631MRH remote air cooled 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 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 10 300 BTU h AT 90 F 32 WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 1 600 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 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 33 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 t
12. Remove the hold down bolts washers and rubber grommets 6 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 On remote air cooled models attach the crankcase heater to the new compressor Remove the drier then place the new drier in position Remove plugs from the suction discharge and process pipes 10 11 12 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 13 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 14 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker 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 44 C Removal and Replacement of Expansion Valve IMPORTANT Sometimes moisture in the refrigeration 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 Do not replace the drier until after all other repair or replacement has been made 1 Turn off the power supply 2 Remove the panel
13. Turn on the power supply E Removal and Replacement of Evaporator IMPORTANT Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repairs or replacement have been made 1 Turn off the power supply 3 2 Remove the panels and the top insulation over the evaporator Recover the refrigerant and store it in an approved container 4 Remove the spray tubes and the insulations at the U shaped notch where the refrigeration tubings pass through the molded chassis 5 Disconnect the evaporator tubing 6 Remove the evaporator 7 Install the new evaporator 46 8 9 0 1 Remove the drier then place the new drier in position Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 10 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 1 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker 12 Replace the removed parts in the reverse order of which they were removed 13 Replace the top insulation and the panels in their correct positions 14 Turn on the power supply F Removal and Replacement of Water Regulating Valve Water Cooled Model Only IMPORTANT Always install a new drier every time the sealed refrig
14. 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 Evacuation and Recharge R 404A 1 Attach a vacuum pump to the system Be sure to connect charging hoses to both high and low side 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 Never allow the oil in the vacuum pump to flow backward 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 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 air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker 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
15. begins After 1 minute the board checks for a closed F S If F S is closed the harvest cycle begins If not WV will remain energized through additional 1 minute cycles until water enters the sump and F S closes This serves as a low water safety to protect the water pump Initial Harvest Cycle LEDs 1 4 and 2 are on WV remains open Comp and FMR energize HGV opens and harvest begins As the evaporator warms the thermistor located on the suction line checks for 48 F 9 C temperature When 48 F 9 is reached 3 9 signal turns the harvest over to the adjustable harvest timer which is factory set for normal conditions The timer has settings of 60 90 120 and 180 seconds dip switch 1 amp 2 The water valve is open during harvest for a maximum of 6 minutes or the length of harvest whichever is shorter 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 Freeze Cycle LED 1 is on Comp and FMR continue to run PR PM and FMS energize LLV opens HGV and WV close and the freeze cycle starts For the first 5 minutes the control board will not accept a signal from F S This 5 minute minimum freeze acts as a short cycle protection At the end of 5 minutes F S assumes control As ice builds on the evaporator the water level in the sump lowers The freeze continues until F S opens
16. close in less than six minutes if the harvest cycle is completed b Harvest Backup Timer and Freeze Timer The harvest backup timer shuts down the 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 dip switches 9 amp 10 The 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 safety This protects the unit from excessively high temperatures If the evaporator temperature rises above 127 F 7 F 53 x 4 C the thermistor 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 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 float switch at the end of the initial one minute water fill cycle and at the end of each harvest cycle If the float switch is in the up position electrical circuit closed the cont
17. the system 2 Five minutes after a freeze cycle starts confirm that the thermometer reads 104 F to 115 F 40 to 46 C If it does not rotate the adjustment screw by using a flat blade screwdriver until the temperature is in the proper range See Fig 1 Next check that the reference pressure is in the range indicated in the Head Pressure table in the Performance Data section If it is not in the proper range verify the refrigerant charge 3 Check that the condenser drain temperature is stable Adjustment Screw CW Higher CCW Lower Top View Fig 1 H Removal and Replacement of Headmaster Condensing Pressure Regulator C P R Remote Air Cooled Model Only 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 1 Turn off the power supply 2 Remove the panels from the remote condenser unit 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 48 7 Braze the fittings while purging 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 1
18. 1 No Ice Production Met 35 2 Evaporator is Frozen 39 3 Low lce Production TE t 40 40 SEP MAP 40 V Removal and Replacement of Components 42 A Service for Refrigerant 42 1 Refrigerant FRO COVEN Y sess case nitantur th enn co cede od E 42 MEET TTL TDI TT 42 3 Evacuation and Recharge R 4044 43 B Removal and Replacement 44 C Removal and Replacement of Expansion Valve 45 D Removal and Replacement of Hot Gas Valve or Line Valve 45 E Removal and Replacement of Evaporator 46 F Removal and Replacement of Water Regulating Valve Water Cooled Model Only 47 Adjustment of Water Regulating Valve Water Cooled Model Only 48 H Removal and Replacement of Headmaster Condensing Pressure Regulator C P R Remote Air Cooled Model 4444 4 4 1000 nnn nnne 48 Removal and Replacement 49 J Removal and Replacement of Fan 2 2200044 50 Removal and Replacement of Water Valves
19. 21 C 8 9 0 1 Remove the drier in the icemaker then place the new drier in position Braze the fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG Check for leaks using nitrogen gas 140 PSIG and soap bubbles 1 11 Evacuate the system and charge it with refrigerant For the required refrigerant charge see the charge label in the machine compartment of the icemaker 12 Replace the panels in their correct positions 13 Turn on the power supply Removal and Replacement of Thermistor IMPORTANT 1 Fragile handle very carefully 2 Always use a recommended sealant high thermal conductive type Model KE4560RTV manufactured by SHINETSU SILICONE Part Code 60Y000 11 or Part Code 4A0683 01 or equivalent 3 Always use a recommended foam insulation non absorbent type or equivalent 4 Do not shorten or cut the thermistor leads when installing 1 Turn off the power supply 2 3 4 Disconnect the thermistor leads from the connector on the control board Thermistor Lead Cable Tie Remove the panels Remove the control box cover ZZ 5 5 Remove the plastic cable ties foam insulation thermistor holder and thermistor See Fig 2 4 UA II KG 6 Scrape away the old sealant on the Foam Insulation Thermistor Holder thermistor holder and the suction pipe 7 Wipe off moisture or condensation on the Fig 2 suction p
20. 9S 02 01 10 AG AM sues AM Wd ezibjeue 6 4 peziBueue ep ASH 5591 JO Ox 6 pezi amp jeue uedo S 4 Hd HS 995 Z JO peuuni uoneJedo senunuoo 2 6 4 87 Seuoeoi peziBueue eziB1eue ep Nd 5 229914 dwog AM puooes 3 50 2 6 4 6 4 4 041u09 ul I skemye dnueis jenu 64 jeunenum g o L Ul J0 SIULJ9U gt l8umesjeun 9799 1 9Z89JJ UInuJIXe N e OZ 15 UJnuJiXe N e 114 1no duing pi 299 4 e s nulu 9 9 UI e ejnuiy 2 0 L ezooJ4 o o 2 2 gt sdeis 1ueuoduio pue eyg eouenbes HHINLE9 PUL HAN LEO9 TIAS 9 15 C Control Board A HOSHIZAKI exclusive solid state control is employed in KML 631MAH KML 631MWH and KML 631MRH Modular Crescent Cubers All models are pretested and factory adjusted CAUTION 1 Fragile handle very carefully
21. A control board contains integrated circuits which are susceptible to failure due to static discharge It is especially important to touch 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 and float switch K4 is not connected Always replace the whole board assembly if it goes bad Do not short out power supply to test for voltage 1 Control Board Layout Control Products E Control Board Output Test Switch Alarm Reset Switch Dip Switch used to test relays on board ALARM RESET 0008806 OUTPUT TEST a Backup Freeze Timer LED 54 53 R13 Connector K3 Harvest Control thermistor R24 R16 7n gat 4 y oo Ea R 1 RT WHITE Backup Harvest 4 Timer LED Connector K4 not connected Alarm Buzzer Microprocessor Power LED board revision level lights when indicated by last 2 power is supplied to the board
22. AH KML 631MWH and KML 631MRH auxiliary codes B W OlSd 612 782 OlSd 2 c uno OISd elzF Be OISd pajoo2 ury 9JhnSSaJg pejoo2 1eyeM 7300W 091002 310434 ANO 13004 031002 7300W 0131002 310438 ANO 3M 1H rng 99643002 310W34 YILYIH ISVIYNYYI MOTA o I30M A hens 3118 yavo nea Nd d ASLL gt INWA INWA AYUD 9 jndino 5 5448 NY T 92 5 39 30 0 4 0 034 j VIE 98 BINIS JLHM M NNOUG 9 l 300 4070 1 HOIIMS i DAS DEP 1 1 6 Lo to MS O ol M 9 919 y a 487041802 303 1 1 09 0 2 802 28 OlSd 612 782 OISd 12 26 uno eiz v8 OISd 110 110 I POIN 5 I POIN 5 14004 03100 ANO 3078 1p9rrngn USHUOISNVUL 10A A 3mg XN AG OL gO Nd 531 jndino jeunojsueJ gt 48
23. ATE ICE AMBIENT TEMP PRODUCTION PER24HR 70 21 80 27 90 32 lbs 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 kg cm G 100 38 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 KML 631MWH water cooled APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C PRODUCTION PER 24 HR F C 50 10 70 21 90 32 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 100 38 FREEZING CYCLE TIME 70 24 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 9 900 BTU h AT 90 F 32 C WT 70 F 21 TOTAL HEAT OF REJECTION FROM COMPRESSOR 1 600 BTU h AT 90 F 32 C WT 70 F 21 C WATER FLOW FOR CONDENSER 77 7 gal h AT 100 F 38 C WT 90
24. F WATER TEMP F CF 59 70 90 420 191 Crescent Cube 9 0 Ibs 4 1 kg 480 pcs N A 90 70 F 70 50 1290 6 2 1250 5 2 130 26 0 275 47 8 30 x 27 3 8 x 26 762 x 695 x 660 mm Stainless Steel Galvanized Steel Rear Net 199 Ibs 90 kg Shipping 220 Ibs 100 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostat Hermetic Model CSO8KQE PFV 255 Air Cooled Fin and tube type Vertical type Stainless Steel and Copper Thermostatic Expansion Valve R404A 2 Ib 10 3 oz 1200g 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 or Ice Dispenser 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 2 KML 631MWH water cooled 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 EXTE
25. Hoshizaki America Inc Low Profile Modular Crescent Cuber Models KML 63 6 6 SERVICE MANUAL A Superior Degree of Reliability www hoshizaki com YCLESAVER evercheck 9 Number 73150 Issued 5 9 2007 Revised 2 18 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 Model Number Serial Number Complete and detailed explanatio
26. LC M 24 A 24 EIN WI er 24 O WAS D 24 Ill Technical Information 25 Water Circuit and Refrigeration Circuit 25 1 air CoOlad ai acis ea entro na anna 25 2 KML 631MWH 26 KML 631MRH remote 27 Ey VV dd 28 1 KML 631MAH KML 631MWH and KML 631MRH auxiliary codes 5 0 and S 2 28 2 KML 631MAH and KML 631MWH auxiliary codes 0 and 29 3 KML 631MRH auxiliary codes 1 0 and 30 Performance REED 31 1 air Cooled unii enn entran 31 2 KML 631MWH 32 KML 631MRH remote air cooled 33 IV Service sieut etie ErptueniL static oett heni nass xcu bti 34 10 Minute Diagnostic 0224444 1112 34 Charts TO 35
27. OlSd 25210 _ Uu91IA S Aq 440 44 HH E97 0l 440 33 WI H 4 H LESS 4 ILAS 40 4 Huc PACH A ee 30 0 31003 pm Ld Ld 1 INO 7 les Od F UNI 3r m NT T Yeh wn yt VS den mm EX t d 3i 190 W e 1 1 1 d A 3 ir
28. RIOR 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 with neutral for 115V 6 8 A 5 Min Freeze AT 104 F WT 80 F 20A ___ 90 5632 287 631 286 593 269 Crescent Cube 9 7 lbs 4 4 kg 480 pcs N A 90 70 70 50 1160 4 4 1140 4 3 156 24 8 275 43 5 750 119 448 71 30 x 27 3 8 x 26 762 x 695 x 660 mm Stainless Steel Galvanized Steel Rear Net 186 Ibs 84 kg Shipping 217 165 98 kg Permanent Connection Inlet 1 2 FPT Condenser Inlet 1 2 Outlet 3 4 FPT Condenser Outlet 3 8 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe Water Regulator Thermostat Hermetic Model CS08KQE PFV 255 Water cooled Tube in tube type Vertical type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 11 9 6 oz 725g 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
29. See chart 2 1 and check float switch inlet water valve and control board Check pump hot gas valve headmaster C P R remote air cooled model expansion valve refrigeration check valve and compressor 2 Harvest cycle time is a See chart 2 2 and check control board thermistor evaporator ambient and or water temperature water supply line inlet water valve line valve if applicable and hot gas valve 4 Abnormal Ice Possible Cause 1 Small cubes a Ice Cube Guide 1 Out of position 1 Place in position Circulated water falls into bin b See chart 1 5 and check water supply line inlet water valve water system pump motor and control board 2 Cloudy or irregular See chart 2 1 and 2 3 and check float switch inlet water valve control cubes board spray tubes water system refrigerant charge and expansion valve b 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 Thermostat 1 Set too cold 1 Adjust warmer when bin is filled with ice 2 Defective 2 Replace 2 Abnormal noise a Pump Motor 1 Bearings worn out 1 Replace b Fan Motor 1 Bearings worn out 1 Replace 2 Fan blade deformed 2 Replace fan blade 3 Fan blade does not 3 Replace move freely c Compressor 1 Bearings worn out or 1 Replace cylinder valve broken
30. and terminates ice production Pump Out Cycle LEDs 1 3 and 2 are on Comp and FMR continue to run HGV opens LLV closes and FMS de energizes PR and PM de energize for 2 seconds SR and PR energize restarting PM and taking water from the sump and forcing it to go through DV and down the drain When the pump out timer stops counting the pump out is complete Pump out always occurs on the 2nd harvest after startup Then depending on the control board setting pump out occurs every cycle or every 2nd 5th or 10th cycle dip switch 5 amp 6 Normal Harvest Cycle LEDs 1 4 and 2 are on Comp and FMR continue to run HGV remains open and WV opens As the evaporator warms the thermistor reaches 48 F 9 The control board then receives the thermistor s 3 9 signal and starts the harvest timer The water valve is open during harvest for a maximum of 6 minutes or the length of harvest whichever is shorter When the harvest timer completes its count down the harvest cycle is complete and the next freeze cycle starts The unit continues to cycle through 3 4 and 5 sequence until the bin control senses ice and shuts the unit down Legend Comp compressor DV drain valve FMR remote fan motor FMS self contained fan motor F S float switch HGV hot gas valve LLV liquid line valve PM pump motor PR pump relay SR service relay WV inlet water valve 14 JOjeJode e eui JO seoeuns episino pue episul eui Jezniues
31. cooled models only Plastic mesh air filters remove dirt and dust from the air and keep the condenser from getting clogged As the filters get clogged the icemaker s performance will be reduced Check the filters at least twice a month When clogged use warm water and a neutral cleaner to wash the filters 4 Condenser air cooled and remote air cooled models only 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 the location of the icemaker or condenser unit C Preparing 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 storage bin The storage bin should be cleaned and dried Drain the icemaker using air or carbon dioxide to prevent damage to the water supply line at sub freezing temperatures 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 54 1 On water cooled model only first remove the water from the water cooled condenser 1 Turn off the power supply and remove the front panel and right side panel 2 Close the condenser water supply line shut off valve 3 Open the condenser water supply line drain valve 4 At
32. ction when checking voltages A jumper also feeds 115 volts into pin 7 If no voltage is present check the 115 volt supply circuit 4 The output test switch provides a relay sequence test Make sure the control switch is in the ICE position then press the output test switch The correct lighting sequence should be none 2 3 4 1 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 If the LEDs light in a different sequence the control board is bad and should be replaced After the output test the unit automatically resumes normal operation at the 1 minute fill cycle 5 Control Board Replacement The application switch located between relay X3 amp X4 must be set to match the original board application Place this switch in the ALP position if there is no white wire supplied to the K1 connector If there is a white wire place the switch in the C position If this switch is placed in the wrong position either the compressor contactor will remain energized with the control switch OFF or the unit will not start The dip switches should be adjusted to the factory default settings as outlined in this manual 8 must remain in the OFF position 22 D Harvest Control Thermistor A thermistor semiconductor is used for a harvest control sensor The resistance varies depending on the suction line temperatures The thermistor detects the temperature o
33. d OFF The pump out cycle can be adjusted to occur every cycle or every 2 5 or 10 cycles The factory default is every 10 cycles The unit always restarts at the 1 minute fill cycle B Diagnostic Charts 1 No Ice Production 1 The icemaker will not a Power Supply 1 OFF position 1 Move to ON position 3 Bad contacts 3 Check for continuity and replace 4 Voltage too high or too 4 Check and get low recommended voltage b Fuse Inside fused 1 Blown 1 Check for short circuit and disconnect if any replace Control Switch 1 OFF position 1 Move to ICE position 2 Bad contacts 2 Check for continuity and replace d Bin Control Thermostat 1 Tripped with bin filled 1 Remove ice with ice 2 Ambient temperature 2 Increase ambient too cool temperature 3 Set too warm 3 See Bin Control 4 Bulb out of position 4 Place in position 5 Bad contacts 5 Check for continuity and replace e High Pressure Control 1 Bad contacts 1 Check for continuity and replace 2 Dirty air filter or 2 Clean condenser 35 1 The icemaker will not e High Pressure Control 3 Ambient or condenser 3 Reduce temperature start continued continued water temperature too warm 4 Refrigerant 4 Recharge overcharged 5 Fan not operating 5 See chart 1 6 except water cooled model 6 Refrigerant line or 6 Clean and replace drier components plugged 7 Condenser wat
34. ducts an internal timer check A short beep occurs when the power switch is turned OFF 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 Sequence of Operation Energized Time LEDs are On Sequence Step erg Components Avg 1 Minute Fill Cycle 4 Harvest Cycle 1 4 and2 Comp WV 2 minutes 20 minutes 3 to 5 minutes HGV FMR Freeze Cycle 1 Comp PR PM FMS FMR LLV 4 8 and Comp FMR WV SR PR PM HGV DV Pump Out Cycle 2 5 minutes freeze timer 30 to 35 minutes setting senro n The built in safeties shut down the unit and have alarms as follows 3 sec High Evaporator Temp temperature gt 127 F 53 Harvest Backup Timer harvest 20 min for two cycles in a row Freeze Timer freeze gt specified setting for two cycles in a row Timer is factory set using dip switches 9 amp 10 Check for harvest problem stuck HGV or relay hot water entering unit stuck HM or shorted thermistor Orange LED marked H TIMER lights up Check for open thermistor HGV not opening TXV leaking by low charge or inefficient compressor Yellow LED marked F TIMER lights up Check for F S stuck closed up WV leaking by HGV leaking by TXV not feeding properly low charge HM not bypassi
35. e freeze cycle e Inlet Water Valve 1 Water valve is wide 1 Check for water leaks with open during freeze icemaker off f Headmaster 1 Not operating properly 1 Replace headmaster remote air cooled and liquid line model temperature too warm 9 Water Supply Line 1 Condenser water 1 Check and get water cooled model pressure too low or off recommended pressure and pressure control opens and closes frequently h Water Regulator 1 Set too high 1 Adjust or replace See water cooled model V G Adjustment of Water Regulating Valve 38 2 Evaporator is Frozen Up Possible Cause 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 Inlet Water Valve 1 Diaphragm does 1 Check for water leaks with close icemaker off Control Board 1 Defective 1 See II C 4 Control Board Check Procedure 2 All ice formed 1 Scaled up evaporator does p water Supply Line 1 Water pressure too 1 Check and get fall into bin in harvest low recommended pressure cycle Water Filter System 1 Dirty Restricted 1 Replace filter d Inlet Water Valve 1 Dirty mesh filter or 1 Clean orifice 2 Diaphragm does not 2 Check for water leaks with close icemaker off e Ambient and or water 1 Too cool 1 Increase temperature PE Line Valve 1 Conti
36. er 7 Check and get pressure too low or off recommended pressure water cooled model f Transformer 1 Coil winding opened 1 Replace or shorted g Wiring to Control Board 1 Loose connections or 1 Check for continuity and open replace h Thermistor 1 Leads shorted or 1 See Harvest Control opened and high Thermistor temperature or harvest backup timer safety operates 1 beep or 2 beep alarm i Hot Gas Valve 1 Continues to open 1 Check for hot gas valve in freeze cycle and stuck open and replace freeze timer safety operates 3 beep alarm j Water Supply Line 1 Water supply off and 1 Check and get water supply cycle recommended pressure does not finish 2 Condenser water 2 Check and get pressure too low recommended pressure or off and pressure control opens and closes frequently to finally operate high temperature safety 1 beep alarm k Inlet Water Valve 1 Mesh filter or orifice 1 Clean gets clogged and water supply cycle does not finish 2 Coil winding opened 2 Replace 3 Wiring to water valve 3 Check for loose connection or open and replace 1 Control Board 1 Defective or in alarm 1 1 4 Control Board Check Procedure 36 1 The icemaker will not m Control Switch 1 SERVICE position 1 Move to ICE position start continued 2 Check and replace 2 Water continues to a Float Switch 1 Connector 1 Place in position be suppl
37. eration system is opened Do not replace the drier until after all other repair or replacement has been made 1 Turn off the power supply Close the water supply line shut off valve Remove the panels Recover the refrigerant and store it in an approved container Disconnect the capillary tube at the condenser outlet Disconnect the flare connections of the valve Remove the screws and the valve from the bracket 8 Install the new valve e Remove the drier then place the new drier in position Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG we a Check for leaks using nitrogen gas 140 PSIG and soap bubbles Evacuate the system and charge it with refrigerant See the nameplate for the required refrigerant charge 13 Connect the flare connections 14 Open the water supply line shut off valve 15 Check for water leaks 16 Replace the panels in their correct positions 7 17 Turn on the power supply 47 G Adjustment of Water Regulating Valve Water Cooled Model Only The water regulating valve also called water regulator is factory adjusted No adjustment is required under normal use Adjust the water regulator if necessary using the following procedures 1 Prepare a thermometer to check the condenser drain temperature Attach a pressure gauge to the high side line of
38. f 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 Resistance 14 401 10 613 6 000 3 871 2 474 1 633 Check a thermistor for resistance by using the following procedure 1 Disconnect the connector K3 on the board 2 Remove the thermistor See V I 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 Replace the thermistor if it exceeds the normal reading E Bin Control CAUTION When the ambient temperature is below 45 F 7 C the bin control thermostat operates to stop the icemaker even if the ice storage bin is empty When the thermostat is set in the prohibited range the icemaker operates continuously even if the ice storage bin is filled with ice Setting in the prohibited range might cause severe damage to the icemaker resulting in failure No adjustment is required under normal use as the bin control is factory adjusted Adjust it if necessary so that the icemaker stops automatically within 10 seconds after ice contacts the bin control thermostat bulb F Switches Two control switches are used to control operation in the KML Series Modular C
39. g Shipping 220 Ibs 100 kg Permanent Connection Inlet 1 2 FPT Outlet 3 4 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Thermostat Hermetic Model CS08KQE PFV 255 Air Cooled Remote Condenser Unit URC 9F Vertical type Stainless Steel and Copper Thermostatic Expansion Valve Condensing Pressure Regulator on URC 9F R404A 9 Ib 8 4 oz 43200 Icemaker 5 Ib 9 6 oz Cond Unit 3 Ib 14 8 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 or Ice Dispenser Remote Condenser Unit URC 9F 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 B Condenser Uni 1 URC 9F Unit mm inches 946 33 311 16 29 96 11 81 097 EI 1 Str LES 71 01 81 34 29 1 132 491 10
40. hot gas valve energizes 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 timer The timer completes counting 1 to 3 minutes The unit then cycles to freeze Diagnosis Check if compressor is running hot gas valve is open water valve still open Average harvest cycle at factory setting is 2 to 3 minutes How long does initial harvest last 1 5 minutes after initial harvest begins touch the compressor discharge line Is it hot If not check refrigerant pressures and compressor operation If it is hot touch the inlet line to the evaporator Is it hot If it is hot and the freeze cycle is not starting check the harvest timer adjustment the thermistor for open circuit the discharge line temperature compressor efficiency and if the hot gas valve is fully open 5 Freeze Cycle Compressor remains energized pump relay pump motor line valve if applicable and fan motor energize The inlet water valve and hot gas valve de energize The unit is held in freeze by a 5 minute short cycle protection timer After the 5 minute short cycle protection timer terminates the freeze cycle operation is transferred to the float switch for freeze termination During the first 5 minutes of freeze confirm that the evaporator temperature drops After 7 minutes in freeze remove the black float switch lead from the K5 connector The unit shou
41. ied and the disconnected icemaker will not 2 Leads opened or 2 Check and replace start defective switch 3 Float does not move 3 Clean or replace freely b Control Board 1 Defective 1 See 1 4 Control Board Check Procedure 3 Compressor will a Magnetic Contactor 1 Bad contacts 1 Check for continuity and not start or stops replace operating 2 Coil winding opened 2 Replace b Start Capacitor or Run 1 Defective 1 Replace Capacitor Internal Overload 1 Loose terminal 1 Tighten or replace Protector Open check 1 through 3 to the right 2 Voltage 2 Check and correct and d through f below 3 Dirty condenser 3 Clean d Starter 1 Check and replace 2 Coil winding opened 2 Replace e Compressor 1 Wiring to compressor 1 Check for loose connection or open and replace 2 Defective 2 Replace 3 Protector tripped 3 Reduce temperature f Control Board 1 No power to contactor 1 See 1 4 Control Board Check Procedure 4 Water continues to Inlet Water Valve 1 Diaphragm does 1 Check for water leaks with be supplied in freeze close icemaker off cycle b Control Board 1 Defective 1 See II C 4 Control Board 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
42. ipe 8 Smoothly apply recommended sealant KE4560RTV Part Code 60Y000 11 or 4A0683 01 to the thermistor holder concave 49 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 the 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 not cut the leads of the thermistor while installing it 12 Replace the control box cover and the panels in their correct positions 13 Turn on the power supply J Removal and Replacement of Fan Motor Note When replacing a fan motor with defective winding it is recommended that a new capacitor be installed 1 Turn off the power supply 2 Remove the panels 3 Remove the junction box cover from the remote condenser unit remote air cooled model 4 Remove the closed end connectors from the fan motor leads 5 Remove the fan motor bracket and fan motor 6 Install the new fan motor and replace the removed parts in the reverse order of which they were removed 7 Replace the panels in their correct positions 8 Replace the junction box cover in its correct position remote air cooled model 9 Turn on the power supply K Removal and Replacement of Water Valves 1 2 3 4 Turn off the power supply
43. is used to circulate cleaner and sanitizer over both the inside and outside of the evaporator 24 Ill Technical Information A Water Circuit and Refrigeration Circuit 1 KML 631MAH air cooled Condenser Spray Tube Water Valve High Pressure Evaporator Switch Heat Exchanger Strainer Switch Discharge Line Compressor L3 Access Valve NExpansion Valve Refrigerant Circuit Water Circuit 25 2 KML 631MWH water cooled Water Regulating Condenser Valve Drain Spray Tube Water Valve Evaporator Water Supply High Pressure Switch Thermistor Drier Heat Exchanger Strainer Hot Gas Valve Discharge Line Compressor Access Valve NExpansion Valve Refrigerant Circuit mEmEEN Water Circuit 26 3 KML 631MRH remote air cooled Condensing Pressure Regulator Condenser High Pressure Switch Spray Tube Water Valve A Evaporator gt Water Supe Receiver Tank Access Valve Thermistor Fusible Plug eg Drier Insulation Line Valve Cleaning Valve Tube Heat Exchanger Drain Valve Strainer Hot Gas Valve Discharge Line Compressor Access Valve NExpansion Valve Refrigerant Circuit mEmEEN Water Circuit 27 S 0 and S 2 iagrams D iring 1 KML 631M
44. it on scales Open the high side valve on the service 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 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 two refrigerant access valves and disconnect the service manifold hoses 10 Cap the access valves to prevent a possible leak 43 B 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 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 3 4 Remove the terminal cover on the compressor and disconnect the compressor wiring On remote air cooled models remove the crankcase heater 2 Remove the panels Recover the refrigerant and store it in an approved container 5
45. ld immediately switch to the pump out cycle Diagnosis If the evaporator is not cold check to see if the hot gas valve is still open or if the expansion valve is not opening properly if the water valve is continuing to fill the reservoir if there are improper unit pressures an inoperative compressor or an inoperative headmaster C P R remote condenser unit only If the 34 unit remains in freeze with the float switch removed replace the board Note Normal freeze cycle will last 20 to 40 minutes depending on model and conditions Cycle times and pressures should follow performance data provided in this manual 6 Pump Out Cycle 10 20 second pump out The compressor remains energized the hot gas valve energizes and the fan motor de energizes The pump relay and pump motor de energize for 2 seconds The service relay and pump relay energize restarting the pump motor and taking water from the sump and forcing it to go through the drain valve and down the drain for 10 20 seconds This removes contaminants from the water reservoir Diagnosis If the pump motor does not run check the circuit service relay pump relay and capacitor Check for proper voltage If water does not pump out check and clean the tubing at the drain valve and then check and clean the valve assembly 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 switche
46. n of the problem IMPORTANT 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 Ea ne reer ere tere 6 De geen ee een ne E reenter 6 1 KML 631MAH NN 6 2 KML 631MWH water cooled uses eter XN BRE 7 3 KML 631MRH remote air cooled 8 B Condenser Unit 9 T REN 9 ll General EE 11 11 1 KML 631MAH air cooled T 11 2 KML 631MWH 12 2 KML 631MRH remote air cooled aptat Ewa AERE AER cue 1 B Sequence of ik tee ee 14 14 2 ntal Harvest 14 Cycle soo dM I EN EDEN EMI 14 14 5 NormalHarvest Cycle
47. ng or inefficient compressor To manually reset the above safeties press the alarm reset button with the power supply on Low Voltage 92Vac 5 or less High Voltage 147Vac 5 or more Red LED will turn off if voltage protection operates The control voltage safeties automatically reset when voltage is corrected Legend Comp compressor DV drain valve FMR remote fan motor FMS self contained fan motor F S float switch HGV hot gas valve HM headmaster LLV liquid line valve PM pump motor PR pump relay SR service relay TXV thermostatic expansion valve WV inlet water valve 19 3 Controls and Adjustments a Default Dip Switch Settings The dip switch is factory adjusted to the following positions Auxiliary Dip Switch No Medel 1 2 4 5 7 2 10 KML 631MAH KML 631MWH 5 0 5 2 ON OFF OFF ON OFF OFF OFF KML 631MRH Freeze Timer 9 amp 10 Normally in the off position Pump Out Frequency Control 5 amp 6 Pump Out Timer 3 amp 4 Harvest Timer 1 amp 2 b Harvest Timer dip switch 1 amp 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 However a setting longer than the factory setting may be advised in cases where the flush provided at harvest needs to be prolonged for ext
48. ng process 13 Turn off the power supply after 30 minutes 14 Remove the front panel 52 15 Move the service switch to the DRAIN position 16 Replace the front panel in its correct position and turn on the power supply for 2 minutes 17 Turn off the power supply and remove the front panel 18 Move the control switch to the ICE position 19 Replace the front panel in its correct position 20 Turn on the power supply to fill the water tank with water 21 Turn off the power supply after 3 minutes 22 Remove the front panel 23 Place the control switch in the SERVICE position Then place the service switch in the WASH position 24 Replace the front panel in its correct position 25 Turn on the power supply to rinse off the cleaning solution 26 27 28 Move the service switch to the DRAIN position Turn off the power supply after 5 minutes Remove the front panel 29 Replace the front panel in its correct position and turn on the power supply for 2 minutes 30 Turn off the power supply 31 Remove the front panel 32 Repeat steps 18 through 31 three more times to rinse thoroughly Note If you do not sanitize the icemaker go to step 14 in 2 Sanitizing Procedure 2 Sanitizing Procedure Following Cleaning Procedure 1 Dilute approximately 1 25 fl oz 37 ml of a 5 2596 sodium hypochlorite solution chlorine bleach with 2 5 gallons 9 5 of warm water 2 Remove the ins
49. nt A Cleaning and Sanitizing Procedures WARNING 1 HOSHIZAKI recommends cleaning this unit at least once a year More frequent cleaning however may be required in some existing water conditions 2 To prevent injury to individuals and damage to the icemaker do not use ammonia type cleaners 3 Always wear liquid proof gloves to prevent the cleaning and sanitizing solutions from coming into contact with skin 1 Cleaning Procedure 1 Dilute approximately 13 5 fl oz 400 ml of Hoshizaki Scale Away with 2 5 gallons 9 5 of warm water 2 Remove all ice from the evaporator and the storage bin Note To remove cubes on the evaporator turn off the power supply and turn it on after 3 minutes The defrost cycle starts and the cubes will be removed from the evaporator 3 Turn off the power supply 4 Remove the front panel 5 Place the control switch in the SERVICE position Then place the service switch in the DRAIN position 6 Replace the front panel in its correct position and turn on the power supply for 2 minutes 7 Turn off the power supply 8 Remove the front panel and then remove the insulation panel by lifting up the panel slightly and pulling it towards you 9 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 and start the washi
50. nues to open 1 Check operation in harvest T applicable harvest cycle cycle and replace 9 Thermistor 1 Out of position or 1 See V I Removal loose attachment and Replacement of Thermistor h Control Board 1 Harvest timer is set 1 Adjust longer referring too short to II C 3 Controls and Adjustments b Harvest Timer 2 Defective 2 See II C 4 Control Board Check Procedure 3 Other a Spray Tubes 1 Clogged 2 Out of position 2 Place in position p Water System 1 Diry c Refrigerant 1 Undercharged 1 Check for leaks and recharge d 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 Ice Cube Guide 1 Out of position and ice 1 Place in position trapped 39 Possible Cause 3 Other continued Water Supply Line 1 Too small requires 1 Increase water line size 3 8 OD line dedicated per machine h Water Filter 1 Flow rate too small 1 Replace with filter that has larger flow rate 3 Low Production Possible Cause 1 Freeze cycle time is a See chart 1 3 and check dirty air filter or condenser ambient or water long temperature water pressure condenser water regulating valve water cooled model and refrigerant charge b
51. o diagnose electrical system and component failures in approximately 10 minutes under normal operating conditions of 70 F or warmer air and 50 F or warmer water temperatures Before conducting a 10 minute checkout check for correct installation proper voltage per unit nameplate and adequate water 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 Check for voltage at the 10 pin connector 1 Turn power OFF and access the control box 2 Turn power ON and place the control switch in ICE position A 5 second delay occurs 3 One Minute Fill Cycle The inlet water valve is energized After 1 minute the control board checks the float switch If the float switch is closed the unit cycles to harvest If closed continue to step 4 If the float switch is open the unit repeats the 1 minute fill cycle until water enters and the float switch closes low water safety protection during initial start up and at the end of each harvest Diagnosis If the 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 unit fails to start harvest check for open float switch or bad 1 minute timer in board 4 Initial Harvest Cycle Inlet water valve remains energized contactor coil energizes to start the compressor and fan motor on a remote condenser unit and the
52. or Ice Dispenser VOLTAGE RANGE 187 253 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 3 KML 631MRH remote air cooled 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 100 165 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 with neutral for 115V 7 8 5 Min Freeze AT 104 F WT 80 F 20A WATER TEMP F 50 70 9 636 288 622 282 578 262 Crescent Cube 9 4 Ibs 4 2 kg 480 pcs N A 90 70 F 70 50 F 1300 5 3 1250 4 7 141 24 0 277 43 5 30 27 3 8 26 762 695 660 Stainless Steel Galvanized Steel Rear Net 199 Ibs 90 k
53. ply line drain valve 55 2013 ADDENDUM A Dip Switch Settings 1 S4 Dip Switch Settings S4 Dip Switch KML 250MAH 1 and Later KML 250MWH B 1 and Later KML 351MAH V 1 Later OFF g o 5 9 gg gg 2 2 2 Ojo Ojo 919 TI TI TI Q z Ti 919191219181 T e m TI TI OJO mm T OJO KML 451MAH 1 and Later KML 351MWH KML 451MWH 1 and Later N TI E TI 2 212 2121212 2 T T T T T o T 2 S5 Dip Switch Settings S5 Dip Switch Do Not Adjust Auxiliary Code 2 5 OFF KML 250MWH 1 and Later OFF OFF KML 351MAH V 1 and Later OFF OFF OFF KML 351MWH KML 451MAH B 1 and Later OFF 20 7 o m 7 KML 451MWH F KML 631MAH F KML 631MWH 0 and Later OFF OF KML 631MRH 0 and Later OFF OF mim mim Tm 7 a a S4 Dip Switch S5 Dip Switch Do Not Adjust Factory Use 8 mme Refill Counter 7 e through 5 Float Switch Selector 1 1 KML 631MAH B 1 and Later and KML
54. pue pesn s 4 514 pue eui oi J01ye10de e eu JO eoeuns episino eui spoued JO pesn eq ued siu eu perjddns si JOYEM 19 UI AM eotues Hs duind Hd Joyow duund Nd pinbiI AT1 526 10U AOH 5141 pue perddns si Jamog jo JO y 88S HSVM PU 3 V T110HIO Suonisod seu YMS 919S 99IAJeS SI pu 99lAJ8S BU Jewod serddns uonisod 32IAH3S Ul ueuM uonisod 32IAH3S OU S YOUMS o1uo2 eui sjueuoduio 1600 5 4 peurejuoo jJjes SIAW A JOJOW 9j0UJ9J HIALHI Jossaidwoo dwoy pu 7 peziB1eue ep A11 7 peziBjeue pezibieue A11 senunuoo pezibueue SWA senunuoo dwog pezibJeue suunjeJ pue sdois uedo S J JI uedo 6 4 01105624 7 A17 0
55. r Switches m 2 Auxiliary Code 5 0 Auxiliary Codes S 2 and later Bin Control Thermostat 11 2 KML 631MWH water cooled Water Supply Inlet Hot Gas Valve Spray Tubes Wash Valve Inlet Water Junction Box Water Valve Regulator Drain Valve Condenser Expansion Valve Control Box P I P Drier Water Pump Compressor Float Switch Control Switches Auxiliary Code 5 0 Auxiliary Codes T 0 and later Bin Control Thermostat 12 3 KML 631MRH remote air cooled Spray Tubes Wash Valve Inlet Water Valve Drain Valve Expansion Valve Water Pump Float Switch Water Supply Inlet Hot Gas Valve Junction Boxes Receiver Tank Control Box Line Valve Drier Compressor Crankcase Heater Control Switches Auxiliary Code 5 0 Auxiliary Codes S 2 and later Bin Control Thermostat 13 B Sequence of Operation The steps in the sequence are as outlined below When power is supplied a 5 second delay occurs at startup Note that the order of the LEDs from the outer edge of the board is 1 4 3 2 One Minute Fill Cycle LED 4 is on WV opens and the fill period
56. ra cleaning Before changing this setting call the HOSHIZAKI Technical Support Department at 1 800 233 1940 for recommendations Keep in mind that setting the harvest timer to a longer setting will decrease 24 hour production Time seconds Lor or 6 ON OFF 90 20 c Pump Out Timer dip switch 3 amp 4 When a freeze cycle is completed the pump motor stops and the icemaker resumes operation in 2 seconds Then 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 The pump out timer also acts in place of the harvest timer during cycles with a pump out The pump out timer is factory adjusted and no adjustment is required Dip Switch Setting Time seconds _ OFF ON 10 120 open T1 Time to drain the water tank T2 Harvest timer at pump out Pump out always occurs on the 2nd harvest after startup Then 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 dip switch 5 amp 6 The pump motor drains the water tank at the frequency set by the pump out frequency 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 drain more often the pump out frequency can be adjusted as
57. rescent 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 23 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 CIRCULATE 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 KML 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 CIRCULATE When the service switch is active and placed in the CIRCULATE 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 KML series utilizes a solenoid operated wash bypass valve When the service switch is active and placed in the WASH position power is supplied to the pump and wash valve This operation
58. rol board changes to the next cycle If the float switch is in the down position electrical circuit open the control board changes to additional one minute water fill cycles until water enters the sump and the float switch closes When the float switch closes the control board changes to the next cycle The unit will not start without adequate water in the sump This serves as a low water safety to protect the water pump For water cooled model if the condenser water supply is shut off the unit is protected by the high pressure switch e High Voltage and Low Voltage Cut outs The maximum and minimum allowable supply voltages of this icemaker are limited by the high voltage and low voltage cut outs If miswiring especially on single phase 3 wire models causes excessive voltage 147Vac 5 or more on the control board the high voltage cut out shuts down the circuit in 3 seconds and the icemaker automatically stops The control board will signal this problem using 7 beeps every 3 seconds 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 18 f LED Lights and Audible Alarm Safeties The red LED indicates proper control voltage and will remain on unless a control voltage problem occurs At startup a 5 second delay occurs while the board con
59. s 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 7 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG WARNING 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 Check for leaks using nitrogen gas 140 PSIG and soap bubbles 9 Evacuate the system and charge it with refrigerant For air cooled and water cooled models see the nameplate for the required refrigerant charge For remote air cooled models see the rating label inside the icemaker 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 set of expansion valve cover in position 12 Replace the panels in their correct positions 13 Turn on the power supply D Removal and Replacement of Hot Gas Valve or Line Valve IMPORTANT 1 Always use a copper tube of the same diameter and length when replacing the hot gas lines otherwise the performance may be reduced
60. s recover the refrigerant from the access valves and store it in an approved container Do not discharge the refrigerant into the atmosphere 2 Brazing WARNING Refrigerant R 4044 itself is not flammable at atmospheric pressure temperatures up to 176 F 80 C Refrigerant R 4044 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 3 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 Do not use 404 as a mixture with pressurized air for leak testing Refrigerant leaks can be detected by charging the unit with a trace of refrigerant raising the pressure with nitrogen and using an electronic leak detector 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 42 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 3 Check for leaks using nitrogen gas 140 PSIG and soap bubbles Do not use R 404A as a mixture with pressurized air for leak testing Note Because the pipes in the evaporator case
61. sese 50 L Removal and Replacement of Pump 51 VI Cleaning and Maintenance 52 A Cleaning and Sanitizing 52 ONE m T T 52 2 Sanitizing Procedure Following Cleaning 53 54 C Preparing the Icemaker for Long Storage 54 l Specifications Icemaker 1 KML 631MAH air cooled 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 100 165 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 with neutral for 115V 7 6 A 5 Min Freeze AT 104 F WT 80
62. tach 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 condenser water supply line drain valve and replace the right side panel in its correct position 2 Remove the water from the potable water supply line 1 If you have not already done so turn off the power supply and remove the front panel 2 Move the control switch on the control box to the OFF position 3 Wait 3 minutes 4 Close the potable water supply line shut off valve and open the potable water supply line drain valve 5 Allow the line to drain by gravity 6 Attach compressed air or carbon dioxide supply to the potable water line drain valve 7 Move the control switch to the ICE position 8 Replace front panel in its correct position and turn on the power supply 9 Blow the potable water line out using compressed air or carbon dioxide 3 Drain the potable water tank 1 Turn off the power supply 2 Remove the front panel 3 Move the control switch to the SERVICE position and move the service switch to the DRAIN position 4 Replace the front panel and turn on the power supply for 2 minutes 5 Turn off the power supply 6 Close the potable water sup
63. ulation panel 3 Pour the sanitizing solution into the water tank 4 Move the service switch to the WASH position 5 Replace the insulation panel and the front panel in their correct positions 6 Turn on the power supply and start the sanitizing process 7 Turn off the power supply after 15 minutes 8 Remove the front panel 9 Move the service switch to the DRAIN position 10 Replace the front panel in its correct position and turn on the power supply for 2 minutes 11 Turn off the power supply 53 Remove the front panel Repeat steps 18 through 31 in 1 Cleaning Procedure two times to rinse thoroughly Move the control switch to the ICE position 12 13 14 15 Replace the front panel in its correct position 16 Clean the storage bin with water 17 Turn on the power supply and start the automatic icemaking process B Maintenance 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 Storage Bin and Scoop Wash your hands before removing ice Use the plastic scoop provided Accessory The storage bin is for ice use only Do not store anything else in the bin Keep the scoop clean Clean it by using a neutral cleaner and rinsing thoroughly Clean the bin liner by using a neutral cleaner Rinse thoroughly after cleaning 3 Air Filters air
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