Hoshizaki KM-151BAH User Manual

SERVICE MANUALHOSHIZAKISELF-CONTAINEDCRESCENT CUBER MODEL KM-61BAH KM-101BAH KM-151BAHNO. M006-749ISSUED: FEB. 18, 2008REVISED:

5[b] KM-151BAH Top Panel Separator Spray Tube Evaporator Door Water Supply Tube

6[c] ICEMAKING COMPARTMENT Water Valve Cleaning ValveSpray Tube Water Supply Pipe Evaporator Pump MotorSeparatorCube Gui

72. SEQUENCE OF OPERATIONThe steps in the sequence are as outlined below. When power is supplied, a 5 second delay occurs at startup. Note that the

8[d] DRAIN CYCLELEDs 4, 5, and 6 are on. Comp continues to run, HGV opens, and FMS de-energizes. PM stops. DV opens for 20 seconds to drain out the

9

103. CONTROL BOARD* A HOSHIZAKI exclusive solid-state control is employed in KM-61BAH, KM-101BAH and KM-151BAH Crescent Cubers.* All models are prete

11[a] CONTROL BOARD LAYOUT"H" Control Board Connector K7 TransformerConnector K3Magnetic ContactorConnector K4OpenPOWER OK LED(Lights when p

12[b] FEATURESa) Maximum Water Supply Period - 6 minutesThe inlet water valve will be open during harvest for 6 minutes or the length of harvest minus

13in 3 seconds and the icemaker automatically stops. The control board will signal this problem using 7 beeps every 3 seconds.The icemaker also autom

146Low Voltage(92Vac ± 5% or less)"POWER OK" LED will turn off if voltage protection operates.The control voltage safeties automaticlly rese

IMPORTANTOnly qualified service technicians should attempt to install, service, or maintain this product. No service or maintenance should be underta

15longer setting will decrease 24 hour production.Dip Switch SettingTime(seconds)No. 1 No. 2OFF OFF 60ON OFF 90OFF ON 120ON ON 180c) Drain Timer (S1 d

16e) Water Saver Timer (S1 dip switch 7 & 8)The water saver timer allows the water valve to close and the pump motor to circulate water in the tan

172) 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. I

18Fig. 25. BIN CONTROLThis machine uses a lever-actuated proximity switch (mechanical bin control) to control the ice level in the storage bin. No ad

19Control SwitchFront View with Louver Removed7) Reconnect the 2-pin connector. Allow the machine to cycle into the freeze cycle. In the first 5 min

20Pump MotorWater TankCompressorWater CircuitRefrigeration CircuitIII. TECHNICAL INFORMATION1. WATER CIRCUIT AND REFRIGERANT CIRCUIT[a] KM-61BAH, KM-1

21[b] KM-151BAHPump MotorWater TankCompressorWater CircuitRefrigeration CircuitDrain ValveDrain OutletHot Gas ValveDrierExpansion ValveEvaporatorFanCo

222. WIRING DIAGRAM[a] KM-61BAH

23[b] KM-101BAH

24[c] KM-151BAH

IMPORTANTThis manual should be read carefully before the icemaker is serviced or maintenance operations are performed. Only qualified service technici

253. TIMING CHART

4. PERFORMANCE DATA[a] KM-61BAH70/21 71 32 65 29 58 2680/27 66 30 56 25 51 2390/32 65 29 49 22 43 20lbs./day kg./day 100/38 64 29 48 22 38 1770/2180

[b] KM-101BAH70/21 115 52 107 49 97 4480/27 109 50 97 44 87 4090/32 107 49 88 40 78 35lbs./day kg./day 100/38 106 48 86 39 69 3170/2180/2790/32watts

[c] KM-151BAH70/21 146 66 139 63 129 5880/27 140 64 129 59 119 5490/32 139 63 121 55 111 50lbs./day kg./day 100/38 137 62 119 54 101 4670/2180/2790/

29IV. SERVICE DIAGNOSIS1. 10-MINUTE DIAGNOSTIC PROCEDUREThe 10 minute check out procedure is basically a sequence check which can be used at unit star

30starts after the thermistor temperature reaches 36°F (2°C). After this period, the freeze cycle operation is transferred to the float switch for fre

312. NO ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY 1. OFF position. 1. Move to ON position. 2. Loose connections. 2. Tighten. 3. Bad contacts. 3

32PROBLEM POSSIBLE CAUSE REMEDY 1. Connector disconnected.1. Reconnect. 2. Leads opened or defective switch. 2. Check and replace. a) Float Switch 3.

33PROBLEM POSSIBLE CAUSE REMEDY a) Water Supply Line 1. Water pressure too low and water level in Water Tank too low. 1. Check and get recommended pr

343. EVAPORATOR IS FROZEN UP PROBLEM POSSIBLE CAUSE REMEDY 1. Leads shorted or defective switch. 1. Check and replace. a) Float Switch 2. Float does

[b] KM-101BAH ----------------------------------------------------------------------------------- 23[c] KM-151BAH ------------------------------------

354. LOW ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY a) See chart 2 - [3] and check dirty Air Filter or Condenser, ambient or water temperature, wat

366. OTHER PROBLEM POSSIBLE CAUSE REMEDY 1. Completely disconnected and dropped inside bin. 1. Place in position. 2. Detector broken. 2. Replace. 3.

37V. REMOVAL AND REPLACEMENT1. SERVICE FOR REFRIGERANT LINES[a] SERVICE INFORMATION1) Allowable Compressor Opening Time and Prevention of Lubricant Mi

38type copper tubes are used in the shipped units.)7) Evacuation, Vacuum Pump and Refrigerant Charge [R134a]Never allow the oil in the vacuum pump to

398) Repeat steps 4) through 7), if necessary, until the required amount of refrigerant has entered the system.9) Close the Refrigerant Access Valve,

403. COMPRESSORWARNINGThe Compressor Terminal Cover must be refitted in its correct position. Otherwise, operation under high temperature and high hu

41RECHARGE”).16) Connect the Solderless Terminals and replace the Terminal Cover in its correct position.17) Refit the Louver and Rear Cover in their c

425. HOT GAS VALVECAUTIONTo ensure optimum performance, use a copper tube of the same diameter and length for replacement of the hot gas circuit.IMPOR

43WARNINGAlways protect the valve body by using a damp cloth to prevent the valve from overheating. Do not braze with the valve body exceeding 274°F.

446. EXPANSION VALVE - KM-151BAH ONLYIMPORTANTThe water in the refrigeration circuit may exceed the capacity of the Drier and freeze in the Expansion

19. SPRAY TUBE, WATER SUPPLY PIPE, SPRAY GUIDE ------------------------------- 6220. DOOR ------------------------------------------------------------

45Fig. 6Remove Expansion Valve Cover firstCut ties to make Bulb removableTop Rear View with Top and Rear Panels RemovedBulb Insulation HoseExpansion Va

467. FAN MOTOR1) Unplug the icemaker or disconnect the power source.2) Remove the Louver.3) Disconnect the Connector of the Fan Motor lead.4) Remove t

478. PUMP MOTOR1) Unplug the icemaker or disconnect the power source.2) Remove the Top Panel and unscrew the Rear Panel.3) Disconnect the Connector of

489. WATER VALVE1) Unplug the icemaker or disconnect the power source.2) Close the water supply tap.3) Remove the Top Panel and unscrew the Rear Panel

4910. CLEANING VALVE1) Unplug the icemaker or disconnect the power source.2) Remove the Top Panel and unscrew the Rear Panel.3) Disconnect the Connect

5011. DRAIN VALVE1) Unplug the icemaker or disconnect the power source.2) Close the water supply tap.3) Drain the Water Tank (see “16. WATER TANK”).4)

5112. FLOAT SWITCH[a] KM-61BAH, KM-101BAH1) Unplug the icemaker or disconnect the power source.2) Remove the Top Panel and unscrew the Rear Panel.3) D

52Fig. 14[b] KM-151BAH1) Unplug the icemaker or disconnect the power source.2) Remove the Top Panel and unscrew the Rear Panel.3) Disconnect the Conne

537) Put the Float Switch down into the mounting hole and hook it in position as shown. To ensure proper operation, be sure to fit the Hook (A) under

547) The Bin Control Switch (KM-61BAH) pulled out of the Storage Bin has the internal structure as shown below.Fig. 18RetainerEvaporatorPump MotorHold

I. SPECIFICATIONS1. SPECIFICATIONS[a] KM-61BAHAC SUPPLY VOLTAGE 115/60/1AMPERAGE 3.4A ( 5 Min. Freeze AT 104°F / WT 80°F )MINIMUM CIRCUIT AMPASITY 15A

558) To remove the Bin Switch Plate, slightly flex both sides and pull the Shaft toward you.Fig. 20Top ViewSlightly flexPull toward you9) Refit the remov

5614. THERMISTOR1) Unplug the icemaker or disconnect the power source.2) Remove the Top Panel and unscrew the Rear Panel.3) Disconnect the Connector o

5715. CONTROL BOX1) Unplug the icemaker or disconnect the power source.2) Remove the Louver.3) Tilt the Tabs inward at the same time on both sides of

58[a] POWER SWITCH1) Disconnect the Tab Terminals and remove the Nut securing the Power Switch.2) Install the new Switch in the reverse order of the r

593) To prevent miswiring, check the terminal numbers and lead wire colors with the Wiring Label.[f] COMPRESSOR CAPACITOR - KM-101BAH, KM-151BAH ONLY1

603) Pinch and push down the Snaps on both sides of the Bracket to unhook the Water Tank from the square holes, and pull it about 1” toward you.4) Whe

616) Slide the left side of the Water Tank to release it from the Bracket Rail, lift down the entire Water Tank, and pull it toward you out of the Sto

6218. SEPARATOR1) Unplug the icemaker or disconnect the power source. Remove the Top Panel.2) Hold both sides of the Separator and lift it up. The B

636) The Spray Guide is located under the Water Supply Pipe. Pull off the Spray Guide from the Evaporator Plate.7) Refit the removed parts in the reve

64VI. CLEANING AND MAINTENANCE INSTRUCTIONSIMPORTANTEnsure all components, fasteners and screws are securely in place after any maintenance or cleanin

[b] KM-101BAHAC SUPPLY VOLTAGE 115/60/1AMPERAGE 5.2A ( 5 Min. Freeze AT 104㐈 / WT 80㐈 )MINIMUM CIRCUIT AMPASITY 15AMAXIMUM FUSE SIZE 15AAPPROXIMATE IC

656) After 30 minutes, move the Control Switch to the “OFF” position.7) Same as step 4.8) Move the Control Switch to the “ICE” position to fill the Wat

6615) Same as step 1.16) Wash the Bin Control Switch, Water Tank, Float Switch, Cube Guide, Silicone Hose and Overflow Pipe by using a nylon scouring p

672. MAINTENANCE[a] EXTERIOR PANELSTo prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a damp cloth containing a ne

68When 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 wil

69Water Supply Inlet1/2” FPTDrain Outlet3/4” FPTFig. 32

[c] KM-151BAHAC SUPPLY VOLTAGE 115/60/1AMPERAGE 7.0A ( 5 Min. Freeze AT 104㐈 / WT 80㐈 )MINIMUM CIRCUIT AMPASITY 15AMAXIMUM FUSE SIZE 15AAPPROXIMATE IC

4II. GENERAL INFORMATION1. CONSTRUCTION[a] KM-61BAH, KM-101BAH Top Panel Separator Spray Tube Evaporator Door