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Hoshizaki KM-201BWH User's Manual

1. 26 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT 26 a KM 201BAH u te 26 KM 201BWH KM g8gBWH 27 S WIRING DIAGRAMa lll i 28 3 TIMING 6NARP 29 fa KM20TBAH U 29 30 31 u 2 32 4 PERFORMANCE tte 33 al KM 201BAH eaten 33 bi NGO A ull i iii i ii i 34 iie eaten 35 6 36 V SERVICE DIAGNOSIE uuu L 37 1 DIAGNOSTIC PROCEDURE ea cette 37 NO ICE PRODUCTION uuu uu ec 39 3 EVAPORATOR IS FRO2EN UJP uu UU uU uuu 42 4 LOW CE PRODUCTION uuu u u uu rece 43 5 ABNORMAL ICE u u nde 43 6 OTHER u uuu ee a 44 V REMOVALAND BEPLAGEMENT uU uuu u 45 1 SERVICE FOR REFRIGERANT LINES 45 SERVICE INFORMATION uu uuu uu u u 45 b REFRIGERANT REGOVERYV uuu UU u 46 c EVACUATION AND RECHARGE 404 46 2 BRAZING u sss 47 COMPRESSOR uuu u 48 DRIEN ubus 49 5 HOT GAS VAINE u uuu 50 6 EXPANSION VA
2. HAM amp gLOZ INM 1 3 9NINV31O s 440 9X AV133 wa 3 J f 8 5 3 PE ee amp avsm o gt M lt _ _ Bo uk Oj 330 ps e Noj PO ws m kw ous NO JOYLNOO NIG 395 06 e le 295 GL 330 EE ma saa w G r Fani 28S0S 4 0 PES DL 4 99501 98501 98501 I NO 440 YUYU EO 29501 lt gt 29501 S856 lt IMYA H31VM xewf gxey xew I i i j i mm SATIN SVO OH l 5 m n n n n 1 7 n 02918120 I A poO Aueyixny H 134e Jo s P a 2950 os 295 0L zga weibog 5 l 1 10 0 A Sasor tui uus 33O fueiuxny d lue jo S 219 YOLOW WOSSdHdWOO YOLSINYSHL 330 HOLIMS H3MOd 19 lp o 159 16 ur pas os g O O 6 s su s jojsiuueu 31949 1S3AHVH 19 apko ysentey u 995 06 g uet asou Jaye 9 6 s su s 1ojsuueu 31949 1S3ANVH 31949 373334 rina 13139 31010 153 Ti
3. anulu G a LYVHO 99 i SNIIALL 11 ees Burusnis 1 dip S eiofo uo umes 101195 828811 eull 9766811 WNWIXEJJ e s lnuluu S eull WNWIUI e 245 9 2 2 928911 2 6 99 O 10 08 ipueBe1 SINUILU o suine ejo o pue sdojs 10sseiduioo uedo sI 51 1I uado s Spes 191 15 ssel 1 UY 6 956 4 8 3819881 dwa Jojsiuueu L peziDjeue ep AM peziD1eue Wd y y 5 peziB1eue ep Ad senuiuoo AA pezifieue ADH pazifueue dwog uedo S 3 peziDiaua AAA X98u 51 e ep puooes 6 SAY UE aay suiBaq dnyejs seul ul IO SlLUI U gt nultu 0 i i sejnulul OZ ISSAJEU UlnullxelA e 8 18 Jo das 09 JO OE OL O 1S8 SU 10 suni sezifjeue Nd JAUOUS si 1 lo9z W 99501 1 Lozna 99506 JO Jas Alojoe 85 0S JO OS OL snultu 15 ulBu eui Jo sajnu 9 51 aw AM s lnuluu 9 15 LUNLUIXB Y e 2 III3 euo L sdeis lS5 2 3 2 159 Z uonejedo 1ueuoduio pue peys eouenbes 11 3 CONTROL BOARD A HOSHIZAKI exclusive solid state control is employed in crescent cubers All models are pretested and factory adjusted
4. 10 f SHUTDOWN 10 3 CONTROL BOARD 12 a CONTROL BOARD LAYOUT 13 0 FEATURES 14 c CONTROLS AND 16 d CONTROL BOARD CHECK 21 e CONTROL BOARD 22 4 22 5 BIN 23 a EXPLANATION OF OPERATION 23 b BIN CONTROL CHECK PROCEDURE 23 6 SWITCHES 24 a CONTROL 24 b SERVICE SWITCH 24 TECHNICAL
5. 2 3 3 3 3 gt log K3 33 D 3 517 BK Y c m TAN at DB ikg Gp Gl MOTOR 05 WE o5 1 WIRE COLOR BR cY EA CODE BR BROWN qj 1 BR WATER CLEA BK BACK CAP VALE VALUE RY gt Rep bu j SL O ORANGE W ol A A E EINE LES PBa BARK BLUE CAPACITOR V VIOLET G Y GREEN YBLLOW ONLY AIR COOLED 28 TRANSFORMER PCB 340 9x AV139 330 AW x AVT38 TOYLNOD 330 Wd x Avi3H 330 Wd AH NO ZX AV IH G A LX AWTSY a sew 330 HO1INS NO 7IOH1NOO NIG EE IEEE I 29506 e Ie oos 340 s m mr ma Me Lys 440 NO 3 l 3340 rr ee 0 gt 988 OL 5855 IMYA H31VM 9 xew lt I I I I 1 i i i Eum No PAWASV 10H e 330 ueuxny NO le 2950 e eso 09501 lt gt lt 29s0 095 OL lt gt I P eso Ze 1 0 H H Uaes 10 0 A 5 Aueyixny a ipee 9 a z SOLON NY4 Sosssudwoo YOLSINYSHL HOLIMS YIMOd Tare gor ous LE opp
6. co N NT Joje1ode 43 eqn Aeids b KM 201BWH KM 260BWH uorsuedxg UND jeje NEN noo Juey AN 959600 Jossaidwog eur ebieyosig peer YOUMS 180 1 dung Xue J9jeM EC pma eqno i seo 10H i l 1J ulens eur uogong Y e JojeJode 3 eqn YOUMS eJjnsseJg YIH JOSUBPUOD 1 27 2 WIRING DIAGRAM FLOAT CONTROLLER POWER RELAY gp gri 0 CONTROL E PE SWITCH j 1 SERVICE LER DIY SWITCH Lo ur 19 i BR Q 9 o TN Wm SUR TAM s 8 2 WS M I 99 TU _ 1194601 DP
7. 39 PROBLEM POSSIBLE CAUSE REMEDY 1 Continued l Control Board 1 Defective 1 See ll 3 d CONTROL BOARD CHECK PROCEDURE 2 Water a Float Switch 1 Connector continues to disconnected be supplied 2 Leads opened or 2 Check and replace and the defective switch icemaker will 3 Float does not move 3 Clean or replace not start freely b Control Board 1 Defective 3 Compressor a Control Switch 1 WASH position 1 Move to ICE position will not start or intermittently Control condenser 2 Ambient temperature 2 Reduce ambient too warm temperature 3 Refrigerant 3 Recharge overcharged 5 Condenser water 5 Check and get temperature too warm recommended water cooled model temperature 6 Refrigerant line or components plugged Protector replace or undercharged 2 Coil winding opened 2 Replace e Start Capacitor 1 Defective d f Power Relay 1 Bad contacts 1 Check for continuity and replace 2 Coil winding opened Compressor 1 Wiring to compressor 1 Check for loose connection or open and replace 2 Defective 3 Protector tripped 3 Reduce temperature and verify cause h Control Board 1 Defective 1 See ll 3 d CONTROL BOARD CHECK PROCEDURE i Condenser Air 1 Clogged with dirt and 1 Clean and unclog Filter dust j Water regulator 1 Set too high 1 Adjust lower water cooled 2 Clogged or defective 2
8. 3 Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes 22 4 Check for resistance between the thermistor leads Normal reading is within 4 7 to 6 2 Replace the thermistor if it exceeds the normal reading 5 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 a OF OPERATION The bin control is connected to the K1 connector pins 4 amp 5 on the control board When the bin control is calling for ice proximity switch closed POWER OK LED on the control board continues icemaking operations When the bin control is activated in the bin full position proximity switch open POWER OK LED flashing the control board drains and shuts down the unit However to prevent incomplete batches of ice from forming on the evaporator the control board will only shut down the machine during the freeze cycle before the five minute timer expires The five minute timer starts counting down when the thermistor temperature reaches 36 F 2 C If during the freeze cycle ice pushes in the lever after the five minute timer expires the control board will allow the machine to complete the freeze cycle and the following harvest cycle before shutting down the machine When the bin control is activated the POWER OK LED flashes There is a delay before the s
9. Jolsluu ul 31942 323355 31049 1S3AHVH Tina LS3AHVH 81919 3733834 319A9 LSSAYVH 81919 3733834 31949 1S3AHVH 31949 32334 310949 63 31040 63 So 38500 HV8092 IN q 30 330 9x AV139 330 AW NO 33 Wa g x AV139 QuvO8 lOHLNOO 340 W3JAH 2CAVTIH 330 anoo IX AVT38 330 HOLIMS NO IOHLNOO NI8 330 a No HOLMS 1 E T NO 3 NINV31O 330 ims w 9 O 3 995 0 lt 295 0 9 9956 lt gt llul AQ SAWAHSIVM 9 XEN la 9 XEN lt T T 340 NO 3N1VA 505 LOH TIE IOLA poo fueyxny 1918 10 2 6 webos 10 0 A apog Au ny 10 19 YOLOW dnd NO 965 0S YOLOW HOSS3HdWOO YOLSINYSHL HOLIMS H3MOd Tarer 4aqe 40 Ho 19 epo ise ull i Jaq ySentey ut oas OF uw g rina 31 39 ONIGNTONI TWLLIND pet sosuos soysiquoy UEU 0 Joye 9 6 sosues 1orstuuou 31040 3zadu4 371949 LSSAYVH 310919 3733313 FIOAO 1S3ANVH 31010 373353 310 0 1S3AtiVH 31010 373353 Sic LANA 3WVN Lud 310A0 LSSAMVH 31049 LSJAYYH
10. 5 used to test relays on K1 Connector control board L Pins 1 3 Float Switch 2 Open 4 5 Bin Control 6 7 Thermistor 8 9 Open ALARM RESET Button e 1 Dip Switch 52 Dip Switch Control Board VO or Earlier V1 or Later P00013 02 P01771 02 HKM2006V003 13 b FEATURES a Maximum Water Supply Period 6 minutes The inlet water valve will be open during harvest for 6 minutes or the length of harvest minus 0 10 30 or 50 seconds adjustable by S1 dip switch 7 amp 8 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 S1 dip switch 9 amp 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 safety This protects the unit from excessively high temperatures If the evaporator temperature rises above 127 F 53 C 7 F 4 C the thermistor operates
11. 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 OPERATING CONDITIONS DRAWING NO DIMENSION 115 60 1 7 5 A 5 Min Freeze AT 104 F WT 80 F N A WATER TEMP F Ambient TempCF 50 70 90 70 268 122 259 117 242 110 80 90 100 Crescent Cube 5 0 Ibs 2 26kg 238 pcs 100 Ibs 45Kg 90 70 F 70 50 F 630 6 37 620 5 59 62 26 3 77 28 7 285 120 6 151 56 2 3 30 x 28 x 39 762 x 712 x 990 mm Including 6 legs Stainless Steel Galvanized Steel Rear Net 154 Ibs 70 kg Shipping 187 Ibs 85 kg Cord Connection Inlet 1 2 FPT Outlet 3 4 FPT Inlet 1 2 FPT Outlet 1 2 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Mechanical Level Switch with Delay Hermetic Model SC10CL Water Cooled Tube type Vertical type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 12 702 360g High 467PSIG Low 230PSIG High Voltage Cut out Internal Auto reset Overload Protector Internal Auto reset High Pressure Control Switch Float Switch Ice Scoop 6 leg 4 pcs VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 F WATER SUPPLY TE
12. HOSHIZAKI SELF CONTAINED CRESCENT CUBER MODEL KM 201BAH KM 260BAH KM 201BWH KM 260BWH SERVICE MANUAL IMPORTANT Only qualified service technicians should install service or maintain the product 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 maintenance and service of the product 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 Support 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 explanation 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 maintai
13. P00013 02 250r earlier 28 ON OFE OFF OEF ON ON ON OFF I M201BAH OEE OFE OFF OFF ON ON OFF ON OEF 1 22 M 260BAH OFE OFF orF OFF ON ON orF OF V 1 or later KM 201BWHIOFF OFF OFF OFF ON ON OFF ON Program Ver Control Board Auxiliary Code S2 Dip Switch No Loma ow cr orr 0001302 25 orearier KM 2608AH ON OFF OFF OFF V 0 or earlier KM 2018WH ON OFF OFF OFF OFF OFF M 3 2 KM 260BAH ON OFF OFF OFF V 1 or later KM 201BWH ON OFF OFF OFF KM 260BWH ON OFF OFF OFF Do not adjust the S2 dip switch These must be left in the factory default position or the unit will not operate properly rs OFF OFF OFF O OFF O OFF O 16 S1 Dip Switch S2 Dip Switch Freeze Timer 9 amp 10 S Water Saver Timer 7 amp 8 VE Refill Counter 3 amp 4 Pump Out Frequency Control 5 amp 6 Pump Out Timer 3 amp 4 Pump Out Drain Selector 1 Functions of S2 dip switch nos 2 Harvest Timer 1 amp 2 through 6 depend on program version Fig 1 Fig 2 b Harvest Timer S1 dip switch 1 amp 2 Used for adjustment of the harvest timer The harvest timer starts counting when the thermistor reads a certain temperature at the evaporator outlet Dip Switch Setting seconds OFF oF e ON OFF 9 c Pump Out T
14. F S opens and terminates ice production d PUMP OUT CYCLE LEDs 4 5 6 and 7 are on Comp continues to run HGV opens FMS de energizes PM stops for 2 seconds DV energizes then restarts to take water from the sump and force it through DV and down the drain When the drain timer stops counting the drain is complete The drain timer has settings of 10 and 20 seconds S1 dip switch 3 amp 4 Pump out cycle always occurs on the 2nd harvest after startup Then depending on 9 the control board setting pump out cycle occurs every cycle or every 2nd 5th or 10th cycle S1 dip switch 5 amp 6 e NORMAL HARVEST CYCLE LEDs 5 6 and 8 are on Comp continues to run HGV remains open and WV opens As the evaporator warms the thermistor reaches 48 F 9 C The control board then receives the thermistor s 3 9 signal and starts the harvest timer WV is open during harvest for a maximum of 6 minutes or the length of harvest minus 0 10 30 or 50 seconds adjustable by S1 dip switch 7 amp 8 whichever is shorter LED 8 goes off when WV closes PM energizes and runs for the last 0 10 30 or 50 seconds of harvest depending on S1 dip switch 7 amp 8 setting LED 7 comes on when PM energizes At the end of harvest the control board checks the position of F 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 c d and e sequence until the bin contr
15. R 404A 12 702 3609 High 467PSIG Low 230PSIG High Voltage Cut out Internal Auto reset Overload Protector Internal Auto reset High Pressure Control Switch Float Switch Ice Scoop 6 leg 4 pcs VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG 372021 We reserve the right to make changes in specifications and design without prior notice KM 201BWH AC SUPPLY VOLTAGE AMPERAGE 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 COND WATER gal 24HR gal 100 Ibs CEC CEE TIER LEVEL EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CONDENSER WATER 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 OPERATING CONDITIONS DRAWING NO DIMENSION 115 60 1 5 5 5 Min Freeze AT 104 F WT 80 F 9 Crescent Cube 4 0lbs 1 82 kg 182pcs 80 Ibs 36Kg 90 70 F 70 50 F 470 6 17
16. Refit the removed parts in the reverse order of the removal procedure Check for water leaks IMPORTANT Fit the spray guide securely and tightly on the evaporator fin Otherwise cloudy or irregular ice cubes or performance reduction may be caused 7 Plug in the icemaker or connect the power source Silicone Hose Spray Tube Spray Guide Water Spray Pipe 23 DOOR 1 Open the door 2 Unscrew and remove the hinges on both sides and remove the door 3 Refit the removed parts in the reverse order of the removal procedure Check that the door opens and closes smoothly Door A g Y 71 VI CLEANING AND MAINTENANCE INSTRUCTIONS IMPORTANT Ensure all components fasteners and screws are securely in place after any maintenance or cleaning is done to the equipment 1 CLEANING WARNING Hoshizaki recommends cleaning this unit at least once a year More frequent cleaning however may be required in some existing water conditions 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 For safety and maximum effectiveness use cleaning and sanitizing solutions immediately after dilution 8 CLEANING PROCEDURE 1 Dilute 5 fl oz 148 ml of recommended cleaner Hoshizaki Scal
17. 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 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 control 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 14 seconds and the icemaker automatically stops The control board will sign
18. 11 Remove plugs from the compressor suction and discharge pipes 12 Braze the access suction and discharge lines Do not change this order with nitrogen gas flowing at a pressure of 0 2 0 3 bar 48 13 Install the new drier see 4 DRIER 14 Check for leaks using nitrogen gas 10 bar and soap bubbles 15 Evacuate the system and charge it with refrigerant see 1 c EVACUATION AND RECHARGE 16 Connect the solderless terminals and replace the terminal cover in its correct position 17 Refit the panels in their correct positions 18 Plug in the icemaker or connect the power source Note Hoshizaki recommends that compressor starting electrics are always replaced at the same time as the compressor 4 DRIER CAUTION 1 Always install a new drier every time the sealed refrigeration system is opened 2 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 3 When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel and rear panel 3 Recover the refrigerant and store it in a proper container if required by an applicable law see 1 REFRIGERANT RECOVERY 4 Remove the drier holder if any and pull the dri
19. 460 5 08 43 24 0 55 25 6 226 141 3 119 55 6 3 24 x 28 x 39 612 x 712 x 990 mm Including 6 legs Stainless Steel Galvanized Steel Rear Net 137 Ibs 62 kg Shipping 165 Ibs 75 kg Cord Connection Inlet 1 2 FPT Outlet 3 4 FPT Inlet 1 2 FPT Outlet 1 2 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Mechanical Level Switch with Delay Hermetic Model NF7CLX Water Cooled Tube type Vertical type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 9 9 oz 280g High 467PSIG Low 230PSIG High Voltage Cut out Internal Auto reset Overload Protector Internal Auto reset High Pressure Control Switch Float Switch Ice Scoop 6 leg 4 pcs VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG 373568801 We reserve the right to make changes in specifications and design without prior notice d KM 260BWH AC SUPPLY VOLTAGE AMPERAGE MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR Ibs day kg day Reference without marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC amp WATER CONSUMPTION ELECTRIC W kWH 100 Ibs WATER gal 24HR gal 100 Ibs COND WATER gal 24HR gal 100 Ibs CEC CEE TIER LEVEL EXTERIOR DIMENSIONS WxDxH EXTERIOR FINISH WEIGHT CONNECTIONS ELECTRIC WATER SUPPLY DRAIN CONDENSER WATER
20. Allow the machine to cycle into the freeze cycle In the first 5 minutes of the freeze cycle activate the bin control actuator press the actuator in The POWER OK LED should flash and the machine should turn off If not replace the control board 6 SWITCHES Two different control switches are used for operation They are located on the right side of the control box which becomes accessible when the front louver is removed The upper is the control switch and the lower is the service switch 8 CONTROL SWITCH This switch is used to place the machine into one of three modes OFF center position ICE upper position and SERVICE lower position b 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 This machine 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 24 b CIRCULATE When the service switch is active and placed in th
21. Cap the access valves to prevent a possible leak 2 BRAZING WARNING R 404A itself is not flammable at atmospheric pressure and temperatures up to 176 F 80 C R 404A itself is not explosive or poisonous However when exposed to high temperatures open flames R 404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous Do not use silver alloy or copper alloy containing arsenic 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 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG CAUTION 1 Always install a new drier every time the sealed refrigeration system is opened 2 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 3 When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 2 Use an electronic leak detector or soap bubbles to check for leaks Add a trace of refrigerant to the system if using an electronic leak detector and then raise the pressure using nitrogen gas 140 PSIG DO NOT use
22. DATA If it is not in the proper range verify the refrigerant charge 3 Check that the condenser drain temperature is stable ADJUSTMENT SCREW ADJUSTMENT SCREW CW Higher CCW Lower Top View Fig 7 58 12 PUMP MOTOR 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel rear panel and side panel R 3 Disconnect the connector of the pump motor lead 4 Remove the water tank see 19 WATER TANK 5 Remove the hose band connecting the pump motor discharge outlet and pull off the rubber hose Rubber Hose M Hose Band Pull off Fig 8 6 Remove the screws securing the pump motor and lift it off Fig 9 7 Install the new motor in the reverse order of the removal procedure 8 Refit the water tank in its correct position 9 Plug in the icemaker or connect the power source and check for leaks 10 Refit the panels in their correct positions 59 19 WATER 1 Unplug the icemaker or disconnect the power source 2 Close the water supply tap 3 Remove the top panel rear panel and side panel R 4 Disconnect the tab terminals 5 Pinch and lower the hose clamp 6 Disconnect the rubber hose from the water valve Put a towel under the water valve to receive water coming out 7 Turn the inlet nut in the arrow direction to remove it from the water valve Do not lose the gasket inside 8 Remove the two mounting screws 9 Ins
23. adjust This must be left in the factory default position or the unit will not operate properly When activated this control promotes harvest of ice on the evaporator that is hard to remove If the harvest cycle exceeds 6 minutes the pump motor starts to operate for a maximum of 3 minutes S2 Dip Switch Setting Harvest Promotion No 2 Control Activated Deactivated k Refill Counter S2 dip switch 3 Program Ver 3 2 Do not adjust This must be left in the factory default position or the unit will not operate properly The KM 201BAH BWH and KM 260BAH BWH do not refill l Harvest Completion Detection Control S2 dip switch 4 Program Ver 3 2 Do not adjust This must be left in the factory default position or the unit will not operate properly It is deactivated on the KM 201BAH BWH and KM 260BAH BWH When activated this control determines whether ice remains on the evaporator at the end of a harvest cycle and at the beginning of a freeze cycle If ice drops and activates the bin control switch in the last 10 seconds of a harvest cycle the control determines that ice still remains on the evaporator and extends the harvest cycle for 30 seconds If the bin control switch is activated at the beginning of a freeze cycle the control determines that ice still remains on the evaporator and starts a harvest cycle after the minimum freeze cycle time has passed S2 Dip Switch Setting Harvest Completion Detection Control 2
24. and lift off the transformer from the fit at the bottom 3 Install the new transformer in the reverse order of the removal procedure 19 WATER TANK 1 Drain out the water tank by leaving the control switch in the SERVICE position and the service switch in the DRAIN position for several tens of seconds 2 Unplug the icemaker or disconnect the power source Remove all ice from the storage bin 3 Disconnect the overflow pipe 4 Remove the two thumbscrews Pull the water tank slightly toward you and push it down Be careful to avoid breakage when handling the parts See Fig 17 5 Refit the water tank in the reverse order of the removal procedure 6 Plug in the icemaker or connect the power source Water Tank Overflow Pipe Fig 17 Thumbscrew 67 20 CUBE GUIDE 1 Remove the water tank see 19 WATER TANK 2 Lift off the cube guide out of the water tank 3 To refit the cube guide fit the notches on both sides to the stoppers in the water tank 4 The unit is provided with three or four cube guides quantity varies depending on model Be sure to locate the vertical flanges on the outside edges Vertical Flange Notch Cube Guide Stopper 21 SEPARATOR IMPORTANT 1 The front separator and rear separator are attached to the evaporator bracket with different lengths of pins The front separator pins 12 7 mm are longer than the rear separator pins 9 8 mm Do not misplace t
25. with the arrow on the drier in the direction of the refrigerant flow 3 When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Unplug the icemaker or disconnect the power source 2 Remove the panels 3 Recover the refrigerant and store it in an approved container 4 Disconnect the condenser inlet and outlet piping 5 Remove the fan motor bracket from the condenser 6 Remove the screws securing the condenser assembly then remove the assembly 53 7 Install the new condenser then attach the fan motor bracket 8 Remove the drier then place the new drier in position 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 for the required refrigerant charge 12 Replace the panels in their correct positions 13 Plug in the icemaker or connect the power source 8 WATER COOLED CONDENSER CAUTION Always install a new drier every time the sealed refrigeration system is opened Do not replace the drier until after all other repair or rep
26. 0 m Overfreeze Detection Control 52 dip switch 5 Program Ver 9 2 Do not adjust This must be left in the factory default position or the unit will not operate properly It is deactivated on the KM 201BAH BWH and KM 260BAH BWH When activated the thermistor detects the temperature of the evaporator outlet to find overfreeze in a harvest cycle and at the beginning of a freeze cycle If the difference between the maximum temperature after the water saver timer starts counting and the temperature at the end of a harvest cycle is 4K or more and if the temperature at the end of a harvest cycle is 48 F 9 C or less the harvest cycle is extended for 30 seconds If the difference between the temperature at the beginning of a freeze cycle and the minimum temperature after 30 seconds in the freeze cycle is 2 5K or more and less than 3 5K the next harvest cycle is extended for 30 seconds If the above conditions occur in succession the number of occurrence times 30 seconds will be added to the harvest cycle time If the above temperature difference is 3 5K or more the freeze cycle ends after the minimum freeze cycle time and a harvest cycle starts S2 Dip Switch Overfreeze Detection rl le No 5 Control OFF Deactivated ON Activated n Anti Slush Control S2 dip switch 6 Program Ver 3 2 Do not adjust This must be left in the factory default position or the unit will not operate properly When activated Ver 1 1 the therm
27. 0 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 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 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 5 second delay occurs The POWER LED on the control board comes on If the POWER OK LED is flashing indicating a full bin check the bin control See Il 5 b BIN CONTROL CHECK PROCEDURE 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 The inlet wate
28. 00 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 4 313 BTU h AT 90 F 32 C WT 70 F 21 C Note Pressure data is recorded at 5 minutes into freezing cycle We reserve the right to make changes in specifications and design without prior notice 34 KM 201BWH APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C F C 50 10 70 21 90 32 PRODUCTION PER 24 HR 70 21 98 205 93 87 80 27 94 192 87 82 90 32 93 181 82 76 Ibs day kg day 100 38 92 178 81 71 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 3 200 BTU h AT 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 650 BTU h AT 90 F 32 C WT 70 F 21 C WATER FLOW FOR CONDENSOR 27 gal h AT 100 F 38 C WT 90 F 32 C PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG Note Pressure data is recorded at 5 minutes into freezing cycle The data
29. 4 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 CEC CEE TIER LEVEL ENERGY STAR 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 OPERATING CONDITIONS DRAWING NO DIMENSION 115 60 1 7 6 A 5 Min Freeze AT 104 F WT 80 F WATER TEMP F CF 50 70 90 263 119 245 111 227 103 100 Crescent Cube 5 0 Ibs 2 26kg 238 pcs 100 Ibs 45Kg 90 70 F 70 50 F 630 7 6 590 5 4 41 20 3 78 29 7 3 Yes 30 x 28 x 39 762 x 712 x 990 mm Including 6 legs Stainless Steel Galvanized Steel Rear Net 154 Ibs 70 kg Shipping 187 Ibs 85 kg Cord Connection Inlet 1 2 FPT Outlet 3 4 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Mechanical Level Switch with Delay Hermetic Model SC10CL Air Cooled Fin and tube type Vertical type Stainless Steel and Copper Thermostatic Expansion Valve
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31. CAUTION Fragile handle very carefully 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 before 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 Always replace the whole board assembly if it goes bad Do not short out the power supply to test for voltage 12 a CONTROL BOARD LAYOUT H Control Board Relay LEDs 6 indicate which relays are energized K7 Connector as listed below Transformer LED 5 X1 Relay Compressor Comp Fan Motor Remote FMR LED 6 X2 Relay Hot Gas Valve HGV Fan Motor FM FM off when LED on K3 Connector Power Relay POWER OK LED Lights when power is supplied to the board Flashes when bin control is activated LED 8 X4 Relay Inlet Water Valve WV WV1 on units with 2 inlet water valves LED 9 X5 Relay K5 Connector Pins 1 Fan Motor FM NM or tal I A mM Li NA 2 Hot Gas Valve 3 Pump Motor 4 Inlet Water Valve 5 Open 6 Drain Valve LED 4 X6 Relay Drain Valve DV LED 7 X3 Relay Pump Motor PM K6 Connector Alarm Buzzer Open 5 OUTPUT TEST Button
32. Clean or replace model 40 PROBLEM POSSIBLE CAUSE REMEDY 4 Water a Inlet Water Valve 1 Diaphragm does not 1 Check for water leaks continues to close with icemaker off be supplied in Replace if necessary freeze cycle b Control Board 1 Defective 1 See ll 3 d CONTROL BOARD CHECK PROCEDURE 5 No water a Water Supply Line 1 Water pressure too low 1 Check and get comes from and water level in water recommended pressure Spray Tubes tank too low Water Pump b Inlet Water Valve 1 Dirty mesh filter or 1 Clean will not start or orifice and water level in freeze cycle water tank too low time is too Water System 1 Check connections for short water leaks and replace 2 Clogged 2 Clean d Pump Motor 3 Wiring to pump motor 3 Check for loose connection or open and replace 4 Defective capacitor 4 Replace 5 Defective or bound 5 Replace and clean impeller e Control Board 1 Defective 1 See Il 3 d CONTROL BOARD CHECK PROCEDURE 6 Fan Motor will a Fan Motor 1 Motor winding opened not start or is not operating 3 Wiring to fan motor 3 Check for loose connection or open and replace 4 Fan blade bound 4 Check and replace locked fan motor Control Board 1 Defective 1 See ll 3 d CONTROL BOARD CHECK PROCEDURE 7 All a Refrigerant 1 Undercharged 1 Check for leaks and components recharge run but no i
33. ED is off check the control transformer circuit If no voltage is present check the power supply circuit 3 To perform a relay sequence test turn on the power switch while pressing the OUTPUT TEST button The correct lighting sequence should be 5 6 7 8 9 4 Some components e g the compressor will cycle during test Each LED comes on for 5 seconds LED 5 is on while LED 6 is on Following the output test sequence the icemaker will resume normal operation beginning with the 1 minute fill cycle e CONTROL BOARD REPLACEMENT The dip switches should be adjusted to the factory default settings as outlined in this manual 4 THERMISTOR A thermistor semiconductor is used as a harvest control sensor and anti slush sensor The resistance varies depending on the suction line temperatures The thermistor detects the temperature of the evaporator outlet to start the harvest timer or momentarily stop the pump motor during the freeze cycle 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 14 401 10 10 613 32 0 6 000 3 871 2 474 90 3 1 633 Check a thermistor for resistance by using the following procedure 1 Disconnect the connector K1 on the board 2 Remove the thermistor See V 17 THERMISTOR
34. LVE eisein 52 T AIR COOLED CONDENSER a 53 WATER COOLED CONDENSER Uu uu U UU uu u 54 9 FAN MOTOR AIR COOLED MODED uuu cette 55 10 WATER REGULATING VALVE WATER COOLED 56 11 ADJUSTMENT OF WATER REGULATING VALVE WATER COOLED M DED Uu 58 12 PUMP MOTOR uuu uu 59 I8 WATER VAIAE 2 uuu u 60 14 DRAIN VALVE GLEANING VALVE UU UU u aet 61 15 FLOAT SWITCH PN 62 16 BIN CONTROL SWITCH luu u eee 63 17 IMERMISIODR 64 65 al POWER 66 b FUSE 66 d CONTROL 66 e POWER RELAY 66 f CONTROL BOARD TRANSFORMER 67 19 WATER 67 20 CUBE GUIDE 68 21 SEPARATOR 68 22 SPRAY TUBE WATER SUPPLY PIPE SPRAY GUIDE 70 23 DOOR ee 71 VI CLEA
35. MP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG 373569801 We reserve the right to make changes in specifications and design without prior notice I GENERAL INFORMATION 1 CONSTRUCTION a KM 201BAH KM 260BAH Side Panel L Front Cover VT Rear Panel Door TY Top Cover Thermistor Evaporator Condenser Cleaning Valve Separator Fan Motor Compressor Water Tank Water Valve Float Switch Overflow Pipe Front View Rear View Bin Control Switch With Tank Removed b KM 201BWH Side Panel L Front Cover Rear Panel Door Power Supply Cord Top Cover Drain Valve Hot Gas Valve Cleaning Valve Thermistor Evaporator Condenser gt Separator Compressor Water Tank Water Valve Expansion Valve Float Switch Overflow Pipe Drier Control Switch Service Switch Control Box Front View Rear View Bin Control Switch With Tank Removed KM 260BWH Top Panel Front Cover Side Panel TEN Rear Panel Door Side Panel R Louver Power Supply Cord Leg Top Cover Drain Valve Hot Gas Valve Thermistor Cleaning Valve Water Regulator Evaporator Condenser Separator Water Tank p Compressor Valve Water Valve Drier Control Switch Float Switch Service Switch Control Box Front View Rear View Bin C
36. NING AND MAINTENANCE INSTRUCTIONS 72 c 72 a CLEANING 72 0 SANITIZING PROCEDURE 73 2 74 a EXTERIOR PANELS 74 0 STORAGE BIN AND SCOOP 74 c AIR FILTER AIR COOLED MODEL 75 d CONDENSER AIR COOLED MODEL ii 75 3 PREPARING THE ICEMAKER FOR LONG 75 I SPECIFICATIONS 1 SPECIFICATIONS a KM 201BAH AC SUPPLY VOLTAGE AMPERAGE 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 CEC CEE TIER LEVEL ENERGY STAR 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 CONDENSE
37. Notes High Evaporator Temp Check for harvest problem stuck HGV or 1 temperature gt 127 F 53 C relay hot water entering unit stuck HM or shorted thermistor Harvest Backup Timer Check for open thermistor HGV not 2 harvest gt 20 min for twoopening TXV leaking by low charge cycles in a row inefficient Comp or WRV leaking by Freeze Timer Check for a float switch stuck closed up freeze specified setting for WV leaking by HGV leaking by PM not 3 two cycles in a row pumping TXV not feeding properly low Timer is factory set using S1 charge or inefficient Comp dip switch 9 amp 10 To reset the above safeties press the ALARM RESET button with the power supply on 15 Low Voltage POWER OK LED will turn off if voltage 92Vac 5 or less protection operates 7 High Voltage The control voltage safeties automaticlly 147Vac x 5 or more reset when voltage is corrected Legend Comp compressor DV drain valve FMS self contained fan motor HGV hot gas valve PM pump motor TXV thermostatic expansion valve WRV water regulating valve WV inlet water valve c CONTROLS AND ADJUSTMENTS CAUTION Dip switches are factory set Failure to maintain factory settings may adversely affect performance and warranty coverage a Default Dip Switch Settings The dip switch is factory adjusted to the following positions Control Board 201 OFF OFF OFF OFF ON ON OFF ON OFF ON
38. R EVAPORATOR REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE P C BOARD CIRCUIT PROTECTION COMPRESSOR PROTECTION REFRIGERANT CIRCUIT PROTECTION LOW WATER PROTECTION ACCESSORIES SUPPLIED OPERATING CONDITIONS DRAWING NO DIMENSION 115 60 1 6 1A 5 Min Freeze AT 104 F WT 80 F WATER TEMP F 50 390 136 62 Crescent Cube 4 0lbs 1 82 kg 182pcs 80 Ibs 36Kg 90 70 F 70 50 F 510 7 5 490 5 8 36 22 0 72 35 6 3 Yes 24 x 28 x 39 612 x 712 x 990 mm Including 6 legs Stainless Steel Galvanized Steel Rear Net 137 Ibs 62 kg Shipping 165 Ibs 75 kg Cord Connection Inlet 1 2 FPT Outlet 3 4 FPT Float Switch Hot Gas and Water Thermistor and Timer Timer Controlled Overflow Pipe N A Mechanical Level Switch with Delay Hermetic Model NF7CLX Air Cooled Fin and tube type Vertical type Stainless Steel and Copper Thermostatic Expansion Valve R 404A 12 340g High 467PSIG Low 230PSIG High Voltage Cut out Internal Auto reset Overload Protector Internal Auto reset High Pressure Control Switch Float Switch Ice Scoop 6 leg 4 pcs VOLTAGE RANGE 104 127 V AMBIENT TEMP 45 100 F WATER SUPPLY TEMP 45 90 F WATER SUPPLY PRESSURE 10 113 PSIG 372022 We reserve the right to make changes in specifications and design without prior notice b KM 260BAH AC SUPPLY VOLTAGE AMPERAGE MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 2
39. R 404A as a mixture with pressurized air for leak testing 47 3 COMPRESSOR WARNING The compressor terminal cover must be refitted in its correct position Otherwise operation under high temperature and high humidity conditions may cause electric shock fire or corrosion to shorten the service life CAUTION 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 When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel and rear panel 3 Recover the refrigerant and store it in a proper container if required by an applicable law see 1 REFRIGERANT RECOVERY 4 Remove the terminal cover on the compressor and disconnect solderless terminals 5 Disconnect the discharge and suction pipes using brazing equipment 6 Remove the hold down bolts washers and rubber grommets 7 Slide and remove the compressor Unpack the new compressor package 8 Attach the rubber grommets of the previous compressor 9 Clean the suction and discharge pipes with an abrasive cloth paper 10 Place the compressor in position and secure it using the bolts and washers
40. al 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 f LED Lights and Audible Alarm Safeties The control board includes LED indicator lights audible alarm safeties and an output test feature The POWER OK LED indicates control voltage and will remain on unless a control voltage problem occurs The POWER OK LED flashes continuously when the bin is full and DV energizes for a maximum of 5 minutes to drain the water tank At startup a 5 second delay occurs to stabilize the circuit LEDs 4 through 8 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 5 6 8 9 4 7 For more information see 2 SEQUENCE OF OPERATION Gonencais LED Energized Time LEDs are On p Components 1 Minute Fill Cycle W j Harvest Cycle Last 0 10 30 or 50 seconds adjustable by dip switch of harvest WV de energizes and PM energizes LEDs 5 6 and 7 are on Freeze Cycle 5 minutes umer 25 to 30 minutes setting Comp HGV factory default Pump Out Cycle 5 6 4 7 DV PM 10 seconds 20 seconds setting The built in safeties shut down the unit and have alarms as listed below ee Type of Alarm
41. ce 2 Air or moisture trapped 2 Replace drier and is produced recharge 1 Defective C Hot Gas Solenoid 1 Continues to open in 1 Check and replace Valve freeze cycle a b 41 3 EVAPORATOR IS FROZEN UP 1 Freeze cycle a Float Switch 1 Leads shorted or 1 Check and replace time is too defective switch long 2 does not move 2 Clean or F b Inlet Water Valve 1 Diaphragm does not 1 for water leaks close with icemaker off Replace if necessary c Control Board 1 Defective 1 See ll 3 d CONTROL BOARD CHECK PROCEDURE 2 All ice formed does not fall recommended pressure into bin in Inlet Water Valve 1 Dirty mesh filter or 1 Clean harvest cycle orifice 2 Diaphragm does not 2 Check for water leaks close with icemaker off Replace if necessary Shen temperature attachment THERMISTOR short ll 4 THERMISTOR 2 Defective 2 See Il 3 d CONTROL BOARD CHECK PROCEDURE 3 Others a Spray Tubes 1 Dirty 1 Clean recharge loose attachment 2 Defective e Hot Gas Solenoid 1 Coil winding opened pom 2 Plunger does not move 3 Wiring to hot gas valve 3 Check for loose connection or open and replace f Water Supply Line 1 Too small requires 9 5 1 Increase water supply line mm OD line dedicated size per machine g Water Filter 1 Flow rate too small 1 Replace with filter that ha
42. e 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 This machine 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 cleaning valve This operation is used to circulate cleaner and sanitizer over both the inside and outside of the evaporator Control Switch Service Switch Fig 3 25 Ill TECHNICAL INFORMATION 1 WATER CIRCUIT AND REFRIGERANT CIRCUIT UoIsuedx3 Xx UN eur eBueuosiq JeyeA NEIN jue1e8uj8s 1055814100 U9IMS 4oloW 18014 yue seo 10H i 1 J ulens eur uonons I lt ta eo lt x I m 5 Es T YOWMS ojnsseJg uBiH ueq N 2 7 Kjddng JOVEN pino
43. e Away or LIME A WAY Economics Laboratory Inc with 1 gal 3 8 lit of water 2 Remove the louver Open the door and remove all ice from the evaporator and the storage bin Note To remove cubes on the evaporator move the control switch on the control box to the OFF position and move it back to the ICE position after 3 minutes The defrost cycle starts and the cubes will be removed from the evaporator 3 Move the control switch to the OFF position 4 Move the control switch to the SERVICE position and the service switch to the DRAIN position 5 After 2 minutes move the control switch to the OFF position 72 6 Pour the cleaning solution into the water tank Move the control switch to the SERVICE position and the service switch to the WASH position Close the door 7 After 30 minutes move the control switch to the OFF position 8 Same as step 4 9 Move the control switch to the ICE position to fill the water tank with water 10 After 3 minutes move the control switch to the SERVICE position and the service switch to the WASH position 11 After 5 minutes move the control switch to the OFF position 12 Same as step 4 13 Repeat steps 9 through 12 three more times to rinse thoroughly 14 Disconnect the overflow pipe Next remove the water tank by removing the two thumbscrews and pulling the tank towards you slightly and pushing it down Be careful to avoid breakage w
44. ect positions 7 Plug in the icemaker or connect the power source v 4 Lift off I Float Switch lt lt 62 16 BIN CONTROL SWITCH 1 Remove the water tank see 19 WATER TANK The bin control switch is located as shown below when viewed from the front Bin Control Switch Fig 13 2 Remove the top panel and the rear panel 3 Disconnect the connector of the bin control switch lead black covered with a silicone hose and remove the lead wire from the grommet 4 Loosen the thumbscrew on the right side 5 Remove the thumbscrew on the left side Shift the bin control switch to the left to remove 6 Refit the removed parts in the reverse order of the removal procedure 7 Plug in the icemaker or connect the power source Shift to the left and remove 17 THERMISTOR 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel and unscrew the rear panel 3 Disconnect the connector of the thermistor lead orange 4 Remove the ties insulation thermistor holder and thermistor in this order 5 Remove the old sealant from the thermistor holder and suction pipe 6 Wipe off any moisture or condensation from the suction pipe surfaces 7 Press a tube of the sealant KE4560RTV manufactured by Shin Etsu Silicones to the recess of the thermistor holder Slowly squeeze the sealant out of the tube and spread it smoothly in the recess Do not use any sealant othe
45. er and a neutral cleaner to wash the filter d CONDENSER AIR COOLED MODEL 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 3 PREPARING THE ICEMAKER FOR LONG STORAGE IMPORTANT When shutting off the icemaker for an extended time drain out all water from the water lines 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 lines 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 a Remove the water from the potable water supply line 1 Remove the louver if it has not already been removed 2 Move the control switch on the control box to the OFF position See Fig 3 3 Wait 3 minutes 4 Close the potable water supply line stop valve See Fig 22 5 Remove the inlet hose b Drain the potable Water Tank 1 Move the control switch to the SERVICE position and the service switch to the 15 DRAIN position 2 After 2 minutes move the control switch to the OFF position 3 Open the door Remove all ice from the storage bin and clea
46. er toward you for easy service 5 Remove the drier using brazing equipment 6 Braze the new drier with the arrow on the drier in the direction of the refrigerant flow Use nitrogen gas at a pressure of 0 2 0 3 bar when brazing tubings Braze in an access valve using a tee if necessary 49 7 Check for leaks using nitrogen gas 10 bar and soap bubbles 8 Evacuate the system and charge it with refrigerant see 1 EVACUATION AND RECHARGE 9 Refit the panels in their correct positions 10 Plug in the icemaker or connect the power source Note Always use a drier of the correct capacity and refrigerant type 5 HOT GAS VALVE CAUTION TO ensure optimum performance use a copper tube of the same diameter and length for replacement of the hot gas circuit 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 When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel rear panel and side panel R 3 Recover the refrigerant and store it in a proper container if required by an applicable law see 1 REFRIGERANT RECOVERY 4 D
47. ew switch in the reverse order of the removal procedure 3 To prevent miswiring check the terminal numbers and lead wire colors with the wiring label b FUSE 1 Use a phillips head screwdriver to remove the fuse holder cap and take out the fuse 2 Install the new fuse in the reverse order of the removal procedure c FUSE HOLDER 1 Disconnect the tab terminal and remove the nut securing the fuse holder 2 Install the new fuse holder in the reverse order of the removal procedure d CONTROL BOARD 1 Disconnect all the connectors 2 Pull the tab to release the control board 3 Lift off the control board 4 To refit the control board fit its four corner holes on the positioning lugs inside the control box and secure the control board with the tab 5 Check the dip switch for proper setting 6 When reconnecting the connectors do not push them too hard The control board may be damaged e POWER RELAY 1 Disconnect the tab terminals remove the mounting screw and lift off the power relay from the fit at the bottom 2 Install the new relay in the reverse order of the removal procedure 66 9 prevent miswiring check the terminal numbers and lead wire colors with the wiring label f CONTROL BOARD TRANSFORMER 1 Disconnect the connectors and closed end connectors connecting the control board The tie securing the harness may be removed But be careful not to break the lead wires 2 Remove the mounting screw
48. he WASH position 8 After 15 minutes move the control switch to the OFF position 9 Move the control switch to the SERVICE position and the service switch to the DRAIN position 10 After 2 minutes move the control switch to the OFF position 11 Repeat steps 5 through 10 one time Repeat steps 9 through 12 in the Cleaning Procedure three times to rinse thoroughly 12 Flush the storage bin with water 13 Move the control switch to the ICE position and start the automatic icemaking process 14 Close the door Replace the louver in its correct position 2 MAINTENANCE a EXTERIOR PANELS To prevent corrosion wipe the exterior occasionally with a clean and soft cloth Use a damp cloth containing a neutral cleaner to wipe off all oil or dirt build up b 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 rinse thoroughly Clean the bin liner by using a neutral cleaner Rinse thoroughly after cleaning 74 AIR FILTER AIR COOLED MODEL The plastic mesh air filter removes dirt or dust from the air and keeps the condenser from getting clogged As the filter gets clogged the icemaker s performance will be reduced Check the filter at least twice a month When it is clogged use warm wat
49. he front and rear separators 2 Do not attach the separators upside down or inside out Make sure that the side printed with THIS SIDE UP faces up and the side printed with EVAPORATOR SIDE faces the evaporator 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel rear panel and side panels L R 68 3 Remove the top cover and front cover See Fig 19 4 Disconnect the silicone hose from the spray tube and remove the spray tube from the evaporator bracket 5 Remove the front separator by pushing the pins inserted into both sides of the evaporator bracket toward the center See Fig 19 Note Be careful not to break the pins 6 The rear separator is hooked on the groove in the evaporator bracket Remove the rear separator by lifting it up and down See Fig 19 7 Refit the separators in the reverse order of the removal procedure Check that the separators are fit correctly and can swing like a pendulum 8 Plug in the icemaker or connect the power source Top Cover Front Cover Spray Tube Silicone Hose Rear Separator Front Separator Pin Fig 19 69 22 SPRAY TUBE WATER SUPPLY SPRAY GUIDE 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel 3 Remove the top cover 4 Remove the silicone hose and spray tube See Fig 20 5 Remove the water spray pipe and spray guide from the evaporator plate See Fig 20 6
50. hen handling the parts See Fig 17 15 Pull the cube guides quantity varies depending on model upward to remove them from the water tank They are snapped in place See Fig 18 16 Same as step 1 17 Wash the bin control switch water tank float switch cube guide and overflow pipe by using a nylon scouring pad brushes and the cleaning solution In addition to the removed parts also wash the bin liner and bracket L R with the solution 18 Discard the cleaning solution and rinse the parts thoroughly with water b SANITIZING PROCEDURE Following Cleaning Procedure 1 Dilute approximately 0 5 fl oz 15 ml of a 5 25 sodium hypochlorite solution chlorine bleach with 1 gal 3 8 lit of warm water Using a chlorine test strip or other method confirm that you have a concentration of about 200 ppm 2 Soak the removed parts from step 17 above in a clean container containing the sanitizing solution After allowing the parts to soak for 10 minutes wash them with the solution Also wash the bin liner bracket L R with the solution 3 Discard the sanitizing solution and rinse the parts thoroughly with water 4 Replace the removed parts in their correct positions in the reverse order of which 73 they were removed 5 Same as step 1 6 Pour the sanitizing solution into the water tank and allow the sanitizer to sit for 10 minutes 7 Move the control switch to the SERVICE position and the service switch to t
51. hutdown sequence begins The delay varies depending on the cycle the icemaker is in at the time of activation For details see the table below Cycle at Bin Control Activation IDelay Before Shutdown Sequence Begins Fill Cycle Harvest Cycle 15 seconds after the next freeze cycle starts Freeze Cycle 15 seconds if the bin control is activated between the beginning of freeze and termination of the 5 minute short cycle protection timer timer starts when the thermistor temperature drops to 36 F 2 C 5 5 or more After this time the unit will not shut down until the next harvest cycle is complete b BIN CONTROL CHECK PROCEDURE 1 Clear any ice away from the bin control 2 Make sure the control switch is in the ICE position 3 Check that the POWER OK LED on the control board is on 4 Activate the bin control actuator press the actuator in Check that the POWER OK LED flashes 23 5 Disconnect the bin control at the 2 pin connector attached to the black wires coming from the K1 connector pins 4 amp 5 on the control board 6 Check for continuity across the bin control leads When calling for ice the bin control proximity switch should be closed If 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 Reconnect the 2 pin connector
52. imer S1 dip switch 3 amp 4 Once every ten freeze cycles the drain valve opens to drain the water tank for the time determined by the pump out timer These switches also determine the time to delay completion of a defrost cycle i e the minimum defrost time Do not change this setting or the unit will not operate properly or produce high quality ice Dip Switch Setting Time seconds T2 120 10 120 ON 20 120 N T1 Time to drain the water tank T2 Harvest timer at pump out 17 Pump out cycle always occurs on the 2nd harvest after startup Then depending on the pump out frequency control setting S1 dip switch 5 amp 6 pump out cycle occurs every cycle or every 2nd 5th or 10th cycle d Pump Out Frequency Control S1 dip switch 5 amp 6 The water tank drains 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 out more often the pump out frequency can be adjusted as shown in the table below See Switch BC CUM Eres No5 No 6 every 2 cycles every 5 cycles every 10 cycles e Harvest Pump Timer S1 dip switch 7 8 The harvest pump timer allows the water valve to close and the pump motor to circulate water in the tank during the final part of harvest The wate
53. imer which is factory set for normal conditions The timer has settings of 60 90 120 and 180 seconds S1 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 WV is open during harvest for a maximum of 6 minutes or the length of harvest minus 0 10 30 or 50 seconds adjustable by S1 dip switch 7 amp 8 whichever is shorter LED 8 goes off when WV closes PM energizes and runs for the last O 10 30 or 50 seconds of harvest depending on S1 dip switch 7 amp 8 setting LED 7 comes on when PM energizes At the end of harvest the control board checks the position of F S and proceeds to the freeze cycle if it is closed or calls for a 1 minute fill if it is open c FREEZE CYCLE LEDs 5 amp 7 are on Comp continues to run PM and FMS energize HGV closes and the freeze cycle starts For the first 5 minutes after the thermistor temperature reaches 36 F 2 C the control board will not accept a signal from F S This minimum freeze period acts as a short cycle protection At the end of this period F S assumes control As the evaporator cools the thermistor located on the suction line checks the temperature and PM stops see Ill 3 TIMING CHART for details This is to prevent slushing As ice builds on the evaporator the water level in the sump lowers The freeze continues until
54. isconnect the hot gas valve leads 5 Remove the screw and the solenoid coil 6 Remove the valve and drier using brazing equipment 7 Braze the new hot gas valve with nitrogen gas flowing at a pressure of 0 2 0 3 bar 50 Hot Gas Valve Fig 4 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 275 F 135 C 8 Install the new drier see 4 DRIER 9 Check for leaks using nitrogen gas 10 bar and soap bubbles 10 Evacuate the system and charge it with refrigerant see 1 c EVACUATION AND RECHARGE 11 Attach the solenoid coil to the valve body and secure it with the screw 12 Connect the lead wires 13 Refit the panels in their correct positions 14 Plug in the icemaker or connect the power source 51 6 EXPANSION VALVE IMPORTANT The water in the refrigeration circuit may exceed the capacity of the drier and freeze in 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 Unplug the icemaker or disconnect the power source 2 Remove the top panel rear panel and side panel R 3 Recover the refrigerant and store it in a proper container if required by an applicable law see 1 REFRIGERANT RECOVERY 4 Remove the expansion valve using brazing e
55. istor located on the suction line checks for a 41 F 5 C temperature as the evaporator cools When 41 F 5 C is reached a 4 8 signal causes the control board to de energize the pump motor for 10 seconds When activated Ver 2 0 the thermistor located on the suction line checks for a 50 F 10 C temperature as the evaporator cools When 50 F 10 C is reached a 3 9 kO signal causes the control board to de energize the pump motor for 10 seconds and energize it for 50 seconds repeatedly When 34 F 1 C is reached a 5 9 signal causes the control board to de energize the pump motor for 10 seconds energize it for 50 seconds de energize it again for 10 seconds then energize it continuously S2 Dip Switch Setting No 6 Anti Slush Control OFF Activated Ver 1 1 Activated Ver 2 0 d 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 21 1 Check the dip switch settings to assure that S1 dip switch 3 4 7 8 9 amp 10 and S2 dip switch 1 through 6 are in the factory default position 51 dip switch 1 2 5 amp 6 are cleaning adjustments and the settings are flexible 2 Move the control switch to the ICE position and check for proper control voltage If the POWER OK LED is on the control voltage is good If the POWER OK L
56. ition from detector b Control Board 1 Defective 1 See Il 3 d CONTROL BOARD CHECK PROCEDURE 2 Abnormal a Pump Motor 1 Bearings worn out 1 Replace noise b Fan Motor 1 Bearings worn out 1 Replace move freely cylinder valve broken 2 Mounting pad out of 2 Reinstall position or loose hold down bolt other surfaces 3 Ice in Storage a Bin Drain 1 Plugged 1 Clean Bin often melts 44 V AND REPLACEMENT WARNING This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire Move the control switch to the OFF position and turn off the power supply before servicing CHOKING HAZARD Ensure all components fasteners and thumbscrews are securely in place after the unit is serviced Make sure that none have fallen into the storage bin Make sure all food zones in the icemaker and storage bin are clean after the unit is serviced For cleaning procedures see VI CLEANING AND MAINTENANCE INSTRUCTIONS 1 SERVICE FOR REFRIGERANT LINES a SERVICE INFORMATION WARNING Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA certified service personnel Always recover the refrigerant and store it in an approved container Do not discharge the refrigerant into the atmosphere Use an electronic leak detec
57. lacement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Unplug the icemaker or disconnect the power source 2 Remove the panels 3 Close the condenser water supply line shut off valve If connected to a closed loop water supply also close the condenser return outlet shut off valve 4 Open the condenser water supply line drain valve If connected to a closed loop water supply also open the condenser return outlet drain valve 5 Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve 54 6 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 7 Recover the refrigerant and store it in an approved container 8 Disconnect the condenser water inlet and outlet piping and the refrigeration inlet and outlet piping at the condenser 9 Remove the old condenser and install the new condenser 10 Remove the drier then place the new drier in position 11 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 12 Use an electronic leak detector or soap bubbles to check fo
58. n 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 PAGE SPECIFICATIONS 1 1 5 1 201 l E 1 2 DW REPE 3 TIE Essi 4 Il GENERAL INFORMATION 5 1 CONSTRUCTION 5 3 KM 20 1BAH netten 5 TES 6 Fes OI UI 7 d ICEMAKING COMPARTMENT 8 2 SEQUENCE OF OPERATION 9 a ONE MINUTE FILL 9 b INITIAL HARVEST CYCLE 9 FREEZE CYCLE 9 d PUMP OUT CYCLE 9 e NORMAL HARVEST CYCLE
59. n the storage bin 4 Close the door 5 Replace the louver in its correct position 6 Turn off the power supply at the breaker box Inlet Hose Washer 76
60. not in bold should be used for reference only We reserve the right to make changes in specifications and design without prior notice 35 d KM 260BWH APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C F C PRODUCTION PER 24 HR 500 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 3 600 BTU h AT 90 F 32 C WT 70 F 21 C TOTAL HEAT OF REJECTION FROM COMPRESSOR 800 BTU h AT 90 F 32 C WT 70 F 21 C WATER FLOW FOR CONDENSOR 30 gal h AT 100 F 38 C WT 90 F 32 C PRESSURE DROP OF COOLING WATER LINE less than 10 PSIG Note Pressure data is recorded at 5 minutes into freezing cycle We reserve the right to make changes in specifications and design without prior notice 36 IV SERVICE DIAGNOSIS 1 DIAGNOSTIC PROCEDURE The diagnostic 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 7
61. ns 310910 LS3AHVH 81919 323355 319A9 1S3AHVH 81910 373333 37949 1S3AHVH 31942 373333 37049 LSJAYYH IWYN Lud HAMa09z INM p 32 4 PERFORMANCE DATA a KM 201BAH APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C PRODUCTION PER 24 HR FIC 8000 50 10 70 21 90 32 70 21 201 86 80 80 27 193 90 32 190 Ibs day _kg day 100 38 187 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 4 120 BTU h AT 90 F 32 C WT 70 F 21 C Note Pressure data is recorded at 5 minutes into freezing cycle The data not in bold should be used for reference only We reserve the right to make changes in specifications and design without prior notice 33 b KM 260BAH APPROXIMATE ICE AMBIENT TEMP WATER TEMP F C F C PRA 70 21 263 11 245 227 80 27 249 220 207 90 32 245 185 Ibs day kg day 100 38 244 171 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 1
62. nt refrigerants However the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for POE oils 2 Turn on the vacuum pump Open the gauge manifold valves Never allow the oil in the vacuum pump to flow backwards 3 Allow the vacuum pump to pull down to a 29 9 Hg vacuum Evacuating period depends on pump capacity 4 Close the low side valve and high side valve on the gauge manifold 5 Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder 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 model see the rating label inside the icemaker Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 latest edition 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 gauge manifold 7 Allow the system to charge with liquid until the proper charge weight is met 46 8 If necessary add any remaining charge 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 valve with the unit running 9 Close the gauge manifold valves and disconnect the gauge manifold hoses 10
63. o cycle until bin control is satisfied or power is turned 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 38 2 NO ICE PRODUCTION will not start 2 Loose connections 2 Tighten replace recommended voltage disconnect if an replace position 2 Bad contacts 2 Check for continuity and replace d Bin Control Switch 1 Tripped with bin filled 1 Remove ice with ice replace Conr replace or coil winding opened Sm open replace h Thermistor 1 Leads shorted or open 1 See ll 4 and high temperature THERMISTOR safety operates If open unit will start but have long harvest cycle i Hot Gas Solenoid 1 Continues to open in 1 Check for power off in Valve freeze cycle and high freeze cycle and replace temperature safety operates j Water Supply Line 1 Water supply off and 1 Check and get water supply cycle does recommended pressure not finish Check for water supply 2 Condenser water 2 Check and get pressure too low or off recommended pressure and high pressure control opens and closes frequently k Inlet Water Valve 1 Mesh filter or orifice 1 Clean Replace if gets clogged and water necessary 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
64. ol is activated and shuts the unit down When the bin control is activated the POWER OK LED flashes f SHUTDOWN When BC is activated BC open the POWER OK LED flashes There is a delay before the shutdown sequence begins The delay varies depending on the cycle the icemaker is in at the time of activation For details see the table below Cycle at Bin Control Activation Delay Before Shutdown Sequence Begins ill Cycle 15 seconds arvest Cycle 5 seconds after the next freeze cycle starts Freeze Cycle 15 seconds if BC is activated between the beginning of freeze and termination of the 5 minute short cycle protection timer timer starts when the thermistor temperature drops to 36 F 2 C 5 5 or more After this time the unit will not shut down until the next harvest cycle is complete After the delay all components de energize DV energizes after 2 seconds PM energizes after 2 seconds PM takes water from the tank and forces it through DV and down the drain The water tank drains for a maximum of 5 minutes or until F S opens DV and PM if applicable then de energize When BC closes again calling for ice the unit starts at the 1 minute fill cycle There is a 90 second minimum off time before the icemaker can restart Legend BC bin control Comp compressor DV drain valve FMS self contained fan motor F S float switch HGV hot gas valve PM pump motor WV inlet water valve 10 y JO
65. ontrol Switch With Tank Removed d ICEMAKING COMPARTMENT Spray Tube Evaporator Water Supply Pipe Separator 277 VIAE Cube Guide Water Tank Overflow Pipe Drain Valve Cleaning Valve Separator M I Water Valve 7 SAU rZ AWA N M A NNN lt TNA KN Z 25 d SEND lt TS NEUE 1 qe C S Pump Motor NY Al IZ AN ag Float Switch eS D D lt 4 2 SEQUENCE 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 5 6 8 9 4 7 a ONE MINUTE FILL CYCLE LED 8 is on WV opens and the fill period 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 pump motor b INITIAL HARVEST CYCLE LEDs 5 6 and 8 are on WV remains open Comp energizes HGV opens and harvest begins As the evaporator warms the thermistor located on the suction line checks for a 48 F 9 C temperature When 48 F 9 C is reached a 3 9 signal turns the harvest over to the adjustable harvest t
66. placement has been made Install the new drier with the arrow on the drier in the direction of the refrigerant flow 3 When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C 1 Unplug the icemaker or disconnect the power source 2 Remove the panels 3 Close the condenser water supply line shut off valve If connected to a closed loop water supply also close the condenser return outlet shut off valve 56 4 Open the condenser water supply line drain valve If connected to a closed loop water supply also open the condenser return outlet drain valve 5 Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve 6 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 7 Recover the refrigerant and store it in an approved container 8 Disconnect the capillary tube at the condenser outlet 9 Disconnect the flare connections of the valve 10 Remove the screws and the valve from the bracket 11 Install the new valve 12 Remove the drier then place the new drier in position 13 Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG 14 Use an electronic leak detector or soap bubbles
67. quipment Protect the evaporator and pipes from excessive heat with damp cloths or similar 5 Remove the insulation hose from the expansion valve sensor bulb and remove the bulb 6 Remove the drier using brazing equipment 7 Braze in the new expansion valve Protect the body of the valve from excessive heat and use nitrogen at a pressure of 0 2 0 3 bar when brazing 8 Install the new drier see 4 DRIER 9 Check for leaks using nitrogen gas 10 bar and soap bubbles 10 Evacuate the system and charge it with refrigerant see 1 c EVACUATION AND RECHARGE 11 Attach the bulb to the suction line in position Be sure to secure it using a wire or clamp and replace the insulation 12 Refit the panels in their correct positions 13 Plug in the icemaker or connect the power source 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 239 F 115 C 52 Cut ties to make Bulb removable Bulb Bulb Insulation Hose F d H SSS 55 me p Q a lan k H ae Remove Expansion Expansion Valve Valve Cover first Fig 5 7 AIR COOLED CONDENSER CAUTION 1 Always install a new drier every time the sealed refrigeration system is opened 2 Do not replace the drier until after all other repair or replacement has been made Install the new drier
68. r 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 19 Evacuate the system and charge it with refrigerant See the nameplate for the required refrigerant charge 14 Close the drain valve s Open the condenser water supply line shut off valve If connected to a closed loop water supply also open the condenser return outlet shut off valve 15 Check for water leaks 16 Replace the panels in their correct positions 17 Plug in the icemaker or connect the power source 9 FAN MOTOR AIR COOLED MODEL 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel rear panel and side panel L 3 Disconnect the connector of the fan motor lead 4 Remove the four screws securing the fan motor bracket and pull out the fan motor in the arrow direction To prevent deformation do not hit the fan on the condenser or other parts 55 5 Install the new fan motor in the reverse order of the removal procedure 6 Refit the panels in their correct positions 7 Plug in the icemaker or connect the power source Fan Motor Fan Motor Bracket 10 WATER REGULATING VALVE WATER COOLED MODEL CAUTION 1 Always install a new drier every time the sealed refrigeration system is opened 2 Do not replace the drier until after all other repair or re
69. r than the above 8 Attach the new thermistor in position on the suction pipe and press down the thermistor holder over the thermistor Be careful not to damage the thermistor lead Cover the parts with the insulation and secure them with the ties Keep the thermistor inside the thermistor holder After the thermistor holder is fitted do not pull the thermistor lead to move the thermistor 9 Refit the removed parts in the reverse order of the removal procedure 10 Plug in the icemaker or connect the power source Thermistor Lead Tie After thermistor holder is fitted do not pull thermistor lead Insulation Thermistor Holder Fit right on top of pipe Fill up to slightly above top of recess Fill in shaded area Do not let in air and make a hollow in recess Fig 15 64 18 CONTROL BOX 1 Unplug the icemaker or disconnect the power source 2 Remove the louver 3 Remove the two mounting screws and pull the control box toward you 4 Refit the removed parts in the reverse order of the removal procedure Note After replacing the components inside the control box connect and tie the wires properly in their correct position Especially make sure that the harness does not press the push buttons on the control board Power Relay Transformer Power Switch Fuse Fuse Holder Fig 16 65 a POWER SWITCH 1 Disconnect the tab terminals and remove the nut securing the power switch 2 Install the n
70. r valve is open during harvest for a maximum of 6 minutes or the length of harvest minus 0 10 30 or 50 seconds determined by the harvest pump timer setting whichever is shorter When the water valve closes the pump motor energizes and runs for the time determined by the harvest pump timer setting The harvest pump timer is factory adjusted and no adjustment is required Dip Switch Setting Time seconds orr or f Freeze Timer S1 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 18 The freeze timer is factory adjusted and no adjustment is required No 9 9 No 10 10 BEN Switch M ERU Time minutes orc orc 6 g Pump Out Pump Motor Delay S2 dip switch 1 The pump out pump motor delay determines whether or not the pump motor de energizes for 2 seconds before restarting at the beginning of a drain cycle The pump out pump motor delay is factory adjusted and no adjustment is required 52 Dip Switch Setting Delay No 1 seconds Control Board P00013 02 h Refill Counter S2 dip switch 2 3 amp 4 Program Ver 2 5 or earlier Do not adju
71. r valve remains energized contactor coil energizes to start the compressor and fan motor on a remote condenser unit and the 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 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 The compressor remains energized 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 which 37 starts after the thermistor temperature reaches 36 F 2 C After this period the freeze cycle operation is transferred to the float switch for freeze termination During the first 5 minu
72. s larger flow rate 42 4 ICE PRODUCTION 1 Freeze cycle a See chart 2 3 and check dirty air filter or condenser ambient or water time is long temperature water pressure and refrigerant charge b See chart 3 1 and check float switch inlet water valve and control board 2 Harvest cycle a See chart 3 2 and check control board thermistor evaporator ambient time is long and or water temperature water supply line and inlet water valve 5 ABNORMAL ICE PROBLEM POSSIBLE CAUSE REMEDY 1 Small cubes a Cube Guide 1 Out of position 1 Check that cube guide is Water Tank Circulated water falls properly installed on water into bin tank and tank is fixed securely with snaps b See chart 2 5 and check water supply line inlet water valve water system pump motor and control board 2 Cloudy or a See chart 3 1 and 3 and check float switch inlet water valve control irregular cubes board spray tubes water system refrigerant charge and expansion valve b Spray Guide Water Quality 1 High hardness or 1 Install a water filter or contains impurities softener 43 6 PROBLEM POSSIBLE CAUSE REMEDY 1 Icemaker will a Bin Control Switch 1 Completely 1 Place in position not stop when disconnected and bin is filled with dropped inside bin ice 2 Detector broken 3 Detector out of position 3 Place in position replace pos
73. st These must be left in the factory default position or the unit will not operate properly The KM 201BAH BWH and KM 260BAH BWH do not refill i Anti Slush Control S2 dip switch 5 amp 6 Program Ver 2 5 or earlier Do not adjust These must be left in the factory default position or the unit will not operate properly The anti slush control Ver 1 0 Ver 2 0 helps prevent slushing during the freeze cycle on small icemakers It is deactivated on the KM 201BAH and KM 260BAH When activated Ver 1 0 the thermistor located on the suction line checks for a 34 F 1 C temperature as the evaporator cools When 34 F 1 C is reached a 5 9 kQ signal causes the control board to de energize the pump motor for 10 seconds When activated Ver 2 0 the thermistor located on the suction line checks for a 50 F 10 C temperature as the evaporator cools When 50 F 10 C is reached a 3 9 signal causes the control board to de energize the pump motor for 10 seconds and energize it for 50 seconds repeatedly When 34 F 1 C is reached a 5 9 signal causes the control board to de energize the pump motor for 10 seconds energize it for 50 seconds de energize it again for 10 seconds then energize it continuously 19 Se Dip SW n Control Activated Ver 1 0 ON OFF Activated Ver 2 0 OFF Deactivated ON Control Board P01771 02 j Harvest Promotion Control S2 dip switch 2 Program Ver 3 2 Do not
74. tall the new valve in the reverse order of the removal procedure 10 Tighten the inlet nut to a torque of 7 85 Nem 5 to prevent water leaks 11 Open the water supply tap 12 Plug in the icemaker or connect the power source 13 Check for leaks 14 Refit the panels in their correct positions Rubber Hose Hose Clamp Mounting Screw AN iN Cc M Tab Terminal Inlet Nut 14 DRAIN VALVE CLEANING VALVE 1 Unplug the icemaker or disconnect the power source 2 Close the water supply tap 3 Remove the top panel rear panel and side panel R 4 Disconnect the tab terminals 5 Remove the hose clamps at the inlet and outlet sides 6 Remove the rubber hoses at the inlet and outlet sides 7 Remove the two mounting screws 8 Install the new valve in the reverse order of the removal procedure 9 Open the water supply tap 10 Plug in the icemaker or connect the power source 11 Check for leaks 12 Refit the panels in their correct positions Drain Valve Mounting Screw Cleaning Valve Mounting Screw 61 15 SWITCH 1 Unplug the icemaker or disconnect the power source 2 Remove the top panel rear panel and side panel R 3 Disconnect the connector of the float switch lead 4 Remove the two mounting screws 5 Install the new float switch in the reverse order of the removal procedure 6 Refit the panels in their corr
75. tes of freeze confirm that the evaporator temperature drops After the minimum freeze period disconnect the float switch at the 2 pin connector attached to the red wires The unit should 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 or an inoperative compressor If the 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 The compressor remains energized the hot gas valve energizes the fan motor de energizes The drain valve and pump motor energize allowing water to drain from the tank for 10 seconds This removes contaminants from the water tank Diagnosis If the drain valve does not open check the circuit Check for proper voltage If water does not drain 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 8 Shutdown See Il 5 b BIN CONTROL CHECK PROCEDURE Note that after a bin control initiated shutdown there is a 90 second minimum off time Note Unit continues t
76. 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 15 Evacuate the system and charge it with refrigerant See the nameplate for the required refrigerant charge 16 Connect the flare connections 17 Close the drain valve s Open the condenser water supply line shut off valve If connected to a closed loop water supply also open the condenser return outlet shut off valve 18 Check for water leaks 19 Replace the panels in their correct positions 20 Plug in the icemaker or connect the power source 57 11 ADJUSTMENT WATER REGULATING VALVE WATER COOLED MODEL 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 the system 2 Five minutes after a freeze cycle starts confirm that the thermometer reads 104 F to 115 F 40 C 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 7 Next check that the reference pressure is in the range indicated in the Head Pressure table See III 4 PERFORMANCE
77. tor 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 CAUTION 1 Do not leave the system open for longer than 15 minutes when replacing or servicing parts 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 2 Always install a new drier every time the sealed refrigeration system is opened 45 3 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 4 When brazing protect the drier by using a wet cloth to prevent the drier from overheating Do not allow the drier to exceed 250 F 121 C b REFRIGERANT RECOVERY The icemaker unit is provided with refrigerant access valves Using proper refrigerant practices recover the refrigerant from the access valves and store it in an approved container Do not discharge the refrigerant into the atmosphere c 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 access valves IMPORTANT The vacuum level and vacuum pump may be the same as those for curre
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Hoshizaki KM-201BWH User's Manual

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