Hoshizaki KM-61BAH Service Manual
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Hoshizaki KM-61BAH Service Manual

Self-contained crescent cuber
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SELF-CONTAINED
CRESCENT CUBER
MODEL
SERVICE MANUAL
HOSHIZAKI
KM-61BAH
KM-101BAH
KM-151BAH
KM-151BWH
NO.
M006-749
ISSUED:
FEB. 18, 2008
REVISED: JUN. 17, 2011

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Summary of Contents for Hoshizaki KM-61BAH

  • Page 1 M006-749 ISSUED: FEB. 18, 2008 REVISED: JUN. 17, 2011 HOSHIZAKI SELF-CONTAINED CRESCENT CUBER KM-61BAH MODEL KM-101BAH KM-151BAH KM-151BWH SERVICE MANUAL...
  • Page 2 Hoshizaki provides this manual primarily to assist qualifi ed service technicians in the maintenance and service of the unit. 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.

  • Page 3: Table Of Contents

    5. BIN CONTROL ------------------------------------------------------------------------------------ 20 [a] EXPLANATION OF OPERATION -------------------------------------------------------- 20 [b] BIN CONTROL CHECK PROCEDURE ------------------------------------------------ 20 6. SWITCHES ---------------------------------------------------------------------------------------- 21 III. TECHNICAL INFORMATION -------------------------------------------------------------------- 22 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT --------------------------------------- 22 [a] KM-61BAH, KM-101BAH ------------------------------------------------------------------- 22 [b] KM-151BAH ----------------------------------------------------------------------------------- 23...
  • Page 4 12. WATER VALVE------------------------------------------------------------------------------------ 56 13. CLEANING VALVE ------------------------------------------------------------------------------- 57 14. DRAIN VALVE ------------------------------------------------------------------------------------- 58 15. FLOAT SWITCH ---------------------------------------------------------------------------------- 59 [a] KM-61BAH, KM-101BAH ------------------------------------------------------------------- 59 [b] KM-151BAH, KM-151BWH ---------------------------------------------------------------- 60 16. BIN CONTROL SWITCH ----------------------------------------------------------------------- 61 17. THERMISTOR ------------------------------------------------------------------------------------ 64 18. CONTROL BOX ---------------------------------------------------------------------------------- 65...
  • Page 5 [d] CONTROL BOARD -------------------------------------------------------------------------- 66 [e] POWER RELAY ------------------------------------------------------------------------------ 66 [f] COMPRESSOR CAPACITOR - EXCEPT KM-61BAH ------------------------------- 67 [g] CONTROL BOARD TRANSFORMER -------------------------------------------------- 67 19. WATER TANK ------------------------------------------------------------------------------------- 67 20. CUBE GUIDE ------------------------------------------------------------------------------------- 69 21. SEPARATOR -------------------------------------------------------------------------------------- 70 22. SPRAY TUBE, WATER SUPPLY PIPE, SPRAY GUIDE ------------------------------- 70 23.

  • Page 6: Specifications

    I. SPECIFICATIONS 1. SPECIFICATIONS [a] KM-61BAH AC SUPPLY VOLTAGE 115/60/1 AMPERAGE 3.4A ( 5 Min. Freeze AT 104°F / WT 80°F ) MINIMUM CIRCUIT AMPASITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F) PER 24 HR. Temp.(°F) lbs./day ( kg/day )

  • Page 7: [B] Km-101Bah

    [b] KM-101BAH AC SUPPLY VOLTAGE 115/60/1 AMPERAGE 5.2A ( 5 Min. Freeze AT 104 / WT 80 MINIMUM CIRCUIT AMPASITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F) PER 24 HR. Temp.(°F) lbs./day ( kg/day ) *115 (52) 107 (49) 97 (44) Reference without *marks...

  • Page 8: [C] Km-151Bah

    [c] KM-151BAH AC SUPPLY VOLTAGE 115/60/1 AMPERAGE 7.0A ( 5 Min. Freeze AT 104°F / WT 80°F ) MINIMUM CIRCUIT AMPASITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F) PER 24 HR. Temp.(°F) lbs./day ( kg/day ) *146 (66) 139 (63) 129 (58) Reference without *marks...

  • Page 9: [D] Km-151Bwh

    [d] KM-151BWH AC SUPPLY VOLTAGE 115/60/1 AMPERAGE 6.8A ( 5 Min. Freeze AT 104°F / WT 80°F ) MINIMUM CIRCUIT AMPASITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F) PER 24 HR. Temp.(°F) lbs./day ( kg/day ) *146 (66) 141 (64) 136 (62) Reference without *marks...

  • Page 10: General Information

    II. GENERAL INFORMATION 1. CONSTRUCTION [a] KM-61BAH, KM-101BAH Top Panel Separator Spray Tube Evaporator Door Water Supply Tube Front Panel Tank Louver Control Box Control Switch Condenser Fan Motor Hot Gas Valve Air Filter Front View Thermistor Cleaning Valve Water...

  • Page 11: [B] Km-151Bah

    [b] KM-151BAH Top Panel Separator Spray Tube Evaporator Door Water Supply Tube Front Panel Tank Louver Control Box Control Switch Condenser Compressor Hot Gas Valve Air Filter Fan Motor Front View Thermistor Cleaning Valve Water Valve Rear Panel Pump Expansion Valve Motor Power Supply...

  • Page 12: [C] Km-151Bwh

    [c] KM-151BWH Top Panel Evaporator Spray Tube Separator Water Supply Tube Door Tank Front Panel Louver Control Switch Control Box Fan Motor Air Filter Condenser Compressor Front View Cleaning Valve Thermistor Water Valve Pump Motor Expansion Valve Rear Panel Drain Valve Power Hot Gas Valve Supply...

  • Page 13: [D] Icemaking Compartment

    [d] ICEMAKING COMPARTMENT Water Valve Cleaning Valve Spray Tube Water Supply Pipe Evaporator Pump Motor Separator Cube Guide Float Switch Water Tank...

  • Page 14: Sequence Of Operation

    2. SEQUENCE OF OPERATION The steps in the sequence are as outlined below. When power is supplied, a 5 second delay occurs at startup. Note that the order of the LEDs from the outer edge of the board is 5, 6, 8, 4, 7. [a] ONE MINUTE FILL CYCLE LED 8 is on.

  • Page 15: [D] Drain Cycle

    [d] DRAIN CYCLE LEDs 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 water tank. Drain cycle always occurs on the 2nd harvest after startup. Then, depending on the control board setting, drain cycle occurs every cycle, or every 2nd, 5th, or 10th cycle (S1 dip switch 5 &...

  • Page 17: Control Board

    3. CONTROL BOARD * A HOSHIZAKI exclusive solid-state control is employed in KM-61BAH, KM-101BAH, KM-151BAH and KM-151BWH Crescent Cubers. * All models are pretested and factory-adjusted. CAUTION 1. Fragile, handle very carefully. 2. A control board contains integrated circuits, which are susceptible to failure due to static discharge.

  • Page 18: [A] Control Board Layout

    [a] CONTROL BOARD LAYOUT "H" Control Board Relay LEDs (6) Connector K7 (indicate which relays Transformer are energized as listed below) LED 5 (X1 Relay) Compressor (Comp) Remote Fan Motor (FMR) LED 6 (X2 Relay) Connector K3 Hot Gas Valve (HGV) Magnetic Contactor Self-Contained Fan Motor (FMS) (FMS off...

  • Page 19: [B] Features

    [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 & 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.
  • Page 20 seconds and the icemaker automatically stops. The control board will signal this problem using 7 beeps every 3 seconds. The icemaker also automatically stops in cases of insuffi cient 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.

  • Page 21: [C] Controls And Adjustments

    However, a setting longer than the factory setting may be advised in cases where the fl ush provided at harvest needs to be prolonged for extra cleaning. Before changing this setting, call the HOSHIZAKI Technical Support Department at...
  • Page 22 1-800-233-1940 for recommendations. Keep in mind that setting the harvest timer to a longer setting will decrease 24 hour production. Dip Switch Setting Time No. 1 No. 2 (seconds) c) Drain Timer (S1 dip switch 3 & 4) Once every ten freeze cycles, the drain valve opens to drain the water tank for the time determined by the drain timer.

  • Page 23: [D] Control Board Check Procedure

    e) 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 tank during the fi nal part of harvest. The water 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 water saver timer setting), whichever is shorter.

  • Page 24: [E] Control Board Replacement

    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” LED is off, check the control transformer circuit. If no voltage is present, check the power supply circuit.

  • Page 25: Bin Control

    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] EXPLANATION OF OPERATION The bin control is connected to the K1 connector (pins 4 & 5) on the control board. When the bin control is calling for ice (proximity switch closed;...

  • Page 26: Switches

    7) Reconnect the 2-pin connector. Allow the machine to cycle into the freeze cycle. In the fi rst 5 minutes of the freeze cycle, activate the bin control actuator (press the actuator in). The "POWER OK" LED should fl ash and the machine should turn off. If not, replace the control board.

  • Page 27: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT [a] KM-61BAH, KM-101BAH Water Inlet Capillary Tube Accumulator Water Valve Spray Tube Cleaning Valve Thermistor Pump Motor Evaporator Water Tank Float Switch Drain Valve Drain Outlet Hot Gas Drier Valve Condenser...

  • Page 28: [B] Km-151Bah

    [b] KM-151BAH Water Inlet Water Valve Expansion Valve Spray Tube Thermistor Cleaning Valve Evaporator Water Tank Pump Motor Float Switch Drain Valve Drain Outlet Hot Gas Valve Compressor Pressure Switch Drier Condenser Water Circuit Refrigeration Circuit...

  • Page 29: [C] Km-151Bwh

    [c] KM-151BWH Water Inlet Water Valve Expansion Valve Spray Tube Thermistor Cleaning Valve Evaporator Water Tank Pump Motor Float Switch Drain Valve Drain Outlet Hot Gas Valve Compressor Pressure Switch Condenser Condenser Water Supply Water Circuit Drain Refrigeration Circuit Water Regulating Valve...

  • Page 30: Wiring Diagram

    2. WIRING DIAGRAM [a] KM-61BAH...

  • Page 31: [B] Km-101Bah

    [b] KM-101BAH...

  • Page 32: [C] Km-151Bah, Km-151Bwh

    [c] KM-151BAH, KM-151BWH...

  • Page 33: Timing Chart

    MOTOR PUMP BOARD CONTROL...

  • Page 34: Performance Data

    4. PERFORMANCE DATA [a] KM-61BAH APPROXIMATE ICE WATER TEMP. (°F/°C) AMBIENT TEMP. PRODUCTION PER 24 HR. (°F/°C) 50/10 70/21 90/32 70/21 80/27 90/32 lbs./day kg./day 100/38 APPROXIMATE ELECTRIC 70/21 CONSUMPTION 80/27 90/32 watts 100/38 APPROXIMATE WATER 70/21 0.09 0.07 0.07 CONSUMPTION PER 24 HR.

  • Page 35: [B] Km-101Bah

    [b] KM-101BAH APPROXIMATE ICE WATER TEMP. (°F/°C) AMBIENT TEMP. PRODUCTION PER 24 HR. (°F/°C) 50/10 70/21 90/32 70/21 80/27 90/32 lbs./day kg./day 100/38 APPROXIMATE ELECTRIC 70/21 CONSUMPTION 80/27 90/32 watts 100/38 APPROXIMATE WATER 70/21 0.18 0.15 0.14 CONSUMPTION PER 24 HR. 80/27 0.16 0.11...

  • Page 36: [C] Km-151Bah

    [c] KM-151BAH APPROXIMATE ICE WATER TEMP. (°F/°C) AMBIENT TEMP. PRODUCTION PER 24 HR. (°F/°C) 50/10 70/21 90/32 70/21 80/27 90/32 lbs./day kg./day 100/38 APPROXIMATE ELECTRIC 70/21 CONSUMPTION 80/27 90/32 watts 100/38 APPROXIMATE WATER 70/21 0.19 0.16 0.15 CONSUMPTION PER 24 HR. 80/27 0.17 0.12...

  • Page 37: [D] Km-151Bwh

    [d] KM-151BWH APPROXIMATE ICE WATER TEMP. (°F/°C) AMBIENT TEMP. PRODUCTION PER 24 HR. (°F/°C) 50/10 70/21 90/32 70/21 80/27 90/32 lbs./day kg./day 100/38 APPROXIMATE ELECTRIC 70/21 CONSUMPTION 80/27 90/32 watts 100/38 APPROXIMATE WATER 70/21 0.59 0.65 0.82 CONSUMPTION PER 24 HR. 80/27 0.63 0.73...

  • Page 38: Service Diagnosis

    IV. SERVICE DIAGNOSIS 1. 10-MINUTE DIAGNOSTIC PROCEDURE The 10 minute check out procedure is basically a sequence check which can be used at unit start-up or for system diagnosis. Using this check out procedure will allow you to diagnose electrical system and component failures in approximately 10 minutes under normal operating conditions of 70°F or warmer air and 50°F or warmer water temperatures.
  • Page 39 starts after the thermistor temperature reaches 36°F (2°C). After this period, the freeze cycle operation is transferred to the fl oat switch for freeze termination. During the fi rst 5 minutes of freeze, confi rm that the evaporator temperature drops. After the minimum freeze period, disconnect the fl...

  • Page 40: No Ice Production

    2. NO ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY [1] The icemaker a) Power Supply 1. OFF position. 1. Move to ON position. will not start. 2. Loose connections. 2. Tighten. 3. Bad contacts. 3. Check for continuity and replace. 4. Voltage too high. 4.
  • Page 41 PROBLEM POSSIBLE CAUSE REMEDY [2] Water a) Float Switch 1. Connector 1. Reconnect. 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.
  • Page 42 PROBLEM POSSIBLE CAUSE REMEDY [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.

  • Page 43: Evaporator Is Frozen Up

    3. EVAPORATOR IS FROZEN UP PROBLEM POSSIBLE CAUSE REMEDY [1] Freeze cycle a) Float Switch 1. Leads shorted or 1. Check and replace. time is too defective switch. long. 2. Float does not move 2. Clean or replace. freely. b) Inlet Water Valve 1.

  • Page 44: Low Ice Production

    4. LOW ICE PRODUCTION PROBLEM POSSIBLE CAUSE REMEDY [1] Freeze cycle a) See chart 2 - [3] and check dirty Air Filter or Condenser, ambient or water time is long. temperature, water pressure, Condenser Water Regulating Valve (KM-151BWH) and refrigerant charge. b) See chart 3 - [1] and check Float Switch, Inlet Water Valve, and Control Board.

  • Page 45: Other

    6. OTHER 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. 2. Replace. 3. Detector out of position. 3.

  • Page 46: Removal And Replacement

    V. REMOVAL AND REPLACEMENT 1. SERVICE FOR REFRIGERANT LINES [a] SERVICE INFORMATION 1) Allowable Compressor Opening Time and Prevention of Lubricant Mixture [R134a] The compressor must not be opened more than 15 minutes in replacement or service. Do not mix lubricants of different compressors even if both are charged with the same refrigerant, except when they use the same lubricant.

  • Page 47: [B] Refrigerant Recovery

    type 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 flow backward. The vacuum level and vacuum pump may be the same as those for the current refrigerants. However, the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for R134a.

  • Page 48: Brazing

    8) Repeat steps 4) through 7), if necessary, until the required amount of refrigerant has entered the system. 9) Close the Refrigerant Access Valve, and disconnect the Hoses, Service Manifold, etc. 10) Cap the Access Valve to prevent possible leak. Depressed Access Valve OPEN...

  • Page 49: Compressor

    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, fi re, or corrosion to shorten the service life. IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened.

  • Page 50: Drier

    17) Refi t the Louver and Rear Cover 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...

  • Page 51: Hot Gas Valve

    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. IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repair or replacement has been made.
  • Page 52 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 274°F. 8) Install the new Drier (see “4. DRIER”). 9) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles. 10) Evacuate the system and charge it with refrigerant (see “1.

  • Page 53: Expansion Valve - Km-151Bah, Km-151Bwh Only

    6. EXPANSION VALVE - KM-151BAH, KM-151BWH ONLY 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.
  • Page 54 Top Rear View with Top and Rear Panels Removed Remove Expansion Valve Cover fi rst Cut ties to make Bulb removable Bulb Insulation Hose Wrap this part with a damp cloth to Expansion Valve prevent overheating Expansion Valve is brazed at these two points.

  • Page 55: Water Regulating Valve - Km-151Bwh Only

    7. WATER REGULATING VALVE - KM-151BWH ONLY IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repair or replacement has been made. 1) Unplug the icemaker or disconnect the power source. 2) Close the water supply line Shout-off Valve.

  • Page 56: Adjustment Of Water Regulating Valve - Km-151Bwh Only

    12) Remove the Drier using brazing equipment. 13) Install the new Drier (see “4. DRIER”). 14) Braze all fi ttings with nitrogen gas fl owing at a pressure of 3 - 4 PSIG. 15) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles. 16) Evacuate the system, and charge it with refrigerant (see “1.

  • Page 57: Water-Cooled Condenser - Km-151Bwh Only

    Fig. 8 9. WATER-COOLED CONDENSER - KM-151BWH ONLY IMPORTANT Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repair or replacement has been made. 1) Unplug the icemaker or disconnect the power source. 2) Close the water supply line Shout-off Valve.
  • Page 58 7) Lift up the front of the body, and place a block between the body and base to allow space for servicing. 8) Disconnect the copper tubes at the inlet and outlet. 9) Remove the screws and take off the Condenser. 10) Install the new Condenser.

  • Page 59: Fan Motor

    10. FAN MOTOR 1) Unplug the icemaker or disconnect the power source. 2) Remove the Louver. 3) Disconnect the Connector of the Fan Motor lead. 4) Remove the two screws securing the Fan Motor Bracket and pull out the Fan Motor in the arrow direction.

  • Page 60: Pump Motor

    11. PUMP MOTOR 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 Pump Motor lead. 4) Remove the Water Tank (see “19. WATER TANK”). 5) Remove the ties connecting the Pump Motor discharge outlet and pull off the Silicone Hose.

  • Page 61: Water Valve

    12. WATER VALVE 1) Unplug the icemaker or disconnect the power source. 2) Close the water supply tap. 3) Remove the Top Panel and unscrew the Rear Panel. 4) Disconnect the Tab Terminals. 5) Pinch and lower the Hose Clamp. 6) Disconnect the Rubber Hose from the Water Valve.

  • Page 62: Cleaning Valve

    13. CLEANING VALVE 1) Unplug the icemaker or disconnect the power source. 2) Remove the Top Panel and unscrew the Rear Panel. 3) Disconnect the Connectors (or Tab Terminals) of the Cleaning Valve lead. 4) Pinch and shift the two Hose Clamps. 5) Disconnect the Hoses from the Cleaning Valve.

  • Page 63: Drain Valve

    14. DRAIN VALVE 1) Unplug the icemaker or disconnect the power source. 2) Close the water supply tap. 3) Drain the Water Tank (see “19. WATER TANK”). 4) Disconnect any rigid (fi xed) pipe for water supply and drain connections. 5) Unscrew the Rear Cover.

  • Page 64: Float Switch

    15. FLOAT SWITCH [a] KM-61BAH, KM-101BAH 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 Float Switch lead and remove the lead wire from the grommet opening.

  • Page 65: [B] Km-151Bah, Km-151Bwh

    [b] KM-151BAH, KM-151BWH 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 Float Switch lead (gray). 4) The Float Switch is located behind the Pump Motor. Pinch where indicated (1) and pull it forward diagonally (2) to unhook the Float Switch.

  • Page 66: Bin Control Switch

    7) Put the Float Switch down into the mounting hole and hook it in position as shown. To ensure proper operation, be sure to fi t the Hook (A) under the mounting hole. 8) Refi t the removed parts in the reverse order of the removal procedure. 9) Plug in the icemaker or connect the power source.
  • Page 67 Slide Rail [both sides] Pull Stopper (A) [both sides] Fig. 20 7) The Bin Control Switch (KM-61BAH) pulled out of the Storage Bin has the internal structure as shown below. Reed Switch Lead Hook Stopper (B) [both sides] * Fit in Stopper (A)
  • Page 68 8) To remove the Bin Switch Plate, slightly fl ex both sides and pull the Shaft toward you. Slightly fl ex Top View Pull toward you Fig. 22 9) Refi t the removed parts in the reverse order of the removal procedure. Be sure to put the lead wire back in the Retainer on the Bracket.

  • Page 69: Thermistor

    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.

  • Page 70: Control Box

    18. CONTROL BOX 1) 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 the Control Box and pull the Control Box toward you. Tilting only one Tab will not work. 4) To refi...

  • Page 71: [A] Power Switch

    [a] POWER SWITCH 1) Disconnect the Tab Terminals and remove the Nut securing the Power Switch. 2) Install the new 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.

  • Page 72: [F] Compressor Capacitor - Except Km-61Bah

    3) To prevent miswiring, check the terminal numbers and lead wire colors with the Wiring Label. [f] COMPRESSOR CAPACITOR - EXCEPT KM-61BAH 1) Disconnect the Tab Terminals and cut the Tie. 2) Install the new Capacitor in the reverse order of the removal procedure. Use a cable tie to secure the Capacitor tightly.
  • Page 73 3) 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. Pinch Snap Pull Water Tank Fig. 26 4) When the Snaps are unhooked from the square holes, the rear part of the Water Tank (dotted circle below) is also unhooked.

  • Page 74: Cube Guide

    6) 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 Storage Bin. Do not hit the other components. 7) Refi t the Water Tank in the reverse order Bracket Rail of the removal procedure (left, right, top, rear).

  • Page 75: Separator

    21. SEPARATOR 1) Unplug the icemaker or disconnect the power source. 2) Remove the screws at the rear and take off the Top Panel. 3) Hold both sides of the Separator from the top. Bend the Front Separator into a U-shape and remove it from the Shaft of the Evaporator Bracket.

  • Page 76: Door

    5) The Water Supply Pipe is located right under the Spray Tube. Remove the Water Supply Pipe from the Evaporator, pinch and shift the Hose Clamp, and disconnect the Hose. 6) The Spray Guide is located under the Water Supply Pipe. Pull off the Spray Guide from the Evaporator Plate.

  • Page 77: Cleaning And Maintenance Instructions

    [a] CLEANING PROCEDURE 1) Dilute 5 fl . oz. (148 ml) of recommended cleaner Hoshizaki “Scale Away” or “LIME- A-WAY” (Economics Laboratory, Inc.) with 1 gallon (3.8 lit.) of water. 2) Remove the Air Filter. Remove all ice from the Evaporator and the Storage Bin.
  • Page 78 Water Tank. They are snapped in place. See Fig. 33. Refer to “V. 20. CUBE GUIDE” for details. Cube Guide Water Tank Snap * This illustration shows KM-61BAH. The following number of Cube Guides are provided: KM-61BAH 2 pcs...

  • Page 79: [B] Sanitizing Procedure

    15) Same as step 1. 16) Wash the Bin Control Switch, Water Tank, Float Switch, Cube Guide, Silicone Hose and Overfl ow 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.

  • Page 80: Maintenance

    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.

  • Page 81: Preparing The Icemaker For Long Storage

    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.
  • Page 82 3) Wait 3 minutes. 4) Close the potable water supply line Shut-off Valve and open the potable water supply line Drain Valve. See Fig. 34. 5) Allow the line to drain by gravity. 6) Attach compressed air or carbon dioxide supply to the potable water supply line Drain Valve.
  • Page 83 KM-61BAH, KM-101BAH, KM-151BAH Drain Outlet 3/4” FPT Water Supply Inlet 1/2” FPT Fig. 34...
  • Page 84 KM-151BWH Bin Drain Outlet Condenser Water 3/4” FPT Outlet 1/2” FPT Condenser Water Inlet 1/2” FPT Icemaking Water Supply Inlet 1/2” FPT Shut-off Valve Two-inch (5 cm) air gap Drain Valve Separate piping to approved drain. Drain Valve Leave a two-inch (5 cm) vertical air Shut-off Valve gap between the end of each pipe and the drain.

This manual is also suitable for:

Km-101bahKm-151bahKm-151bwh

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