Hoshizaki KM-201BAH Service Manual
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Hoshizaki KM-201BAH Service Manual

Self-contained crescent cuber
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SELF-CONTAINED
CRESCENT CUBER
MODEL
SERVICE MANUAL
HOSHIZAKI
KM-201BAH
KM-260BAH
KM-201BWH
KM-260BWH
NO.
F015-774
ISSUED:
MAR. 18, 2009
REVISED: JUN. 17, 2011

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Summary of Contents for Hoshizaki KM-201BAH

  • Page 1 HOSHIZAKI SELF-CONTAINED CRESCENT CUBER KM-201BAH MODEL KM-260BAH KM-201BWH KM-260BWH SERVICE MANUAL F015-774 ISSUED: MAR. 18, 2009 REVISED: JUN. 17, 2011...
  • Page 2 Hoshizaki provides this manual primarily to assist qualifi ed 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.

  • Page 3: Table Of Contents

    [b] KM-260BAH -------------------------------------------------------------------------------------2 [c] KM-201BWH -------------------------------------------------------------------------------------3 [d] KM-260BWH ------------------------------------------------------------------------------------4 II. GENERAL INFORMATION -------------------------------------------------------------------------5 1. CONSTRUCTION ----------------------------------------------------------------------------------5 [a] KM-201BAH, KM-260BAH -------------------------------------------------------------------5 [b] KM-201BWH ------------------------------------------------------------------------------------6 [c] KM-260BWH -------------------------------------------------------------------------------------7 [d] ICEMAKING COMPARTMENT -------------------------------------------------------------8 2. SEQUENCE OF OPERATION ------------------------------------------------------------------9 [a] ONE MINUTE FILL CYCLE ------------------------------------------------------------------9...
  • Page 4 [a] KM-201BAH, KM-260BAH ----------------------------------------------------------------- 26 [b] KM-201BWH, KM-260BWH --------------------------------------------------------------- 27 2. WIRING DIAGRAM ------------------------------------------------------------------------------ 28 3. TIMING CHART ----------------------------------------------------------------------------------- 29 [a] KM-201BAH ----------------------------------------------------------------------------------- 29 [b] KM-260BAH ----------------------------------------------------------------------------------- 30 [c] KM-201BWH ----------------------------------------------------------------------------------- 31 [d] KM-260BWH ---------------------------------------------------------------------------------- 32 4. PERFORMANCE DATA ------------------------------------------------------------------------- 33...
  • Page 5 [c] FUSE HOLDER ------------------------------------------------------------------------------- 66 [d] CONTROL BOARD -------------------------------------------------------------------------- 66 [e] POWER RELAY ------------------------------------------------------------------------------ 66 [f] CONTROL BOARD TRANSFORMER -------------------------------------------------- 67 19. WATER TANK ------------------------------------------------------------------------------------- 67 20. CUBE GUIDE ------------------------------------------------------------------------------------- 68 21. SEPARATOR -------------------------------------------------------------------------------------- 68 22. SPRAY TUBE, WATER SUPPLY PIPE, SPRAY GUIDE ------------------------------- 70 23.

  • Page 6: Specifications

    I. SPECIFICATIONS 1. SPECIFICATIONS [a] KM-201BAH AC SUPPLY VOLTAGE AMPERAGE MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.)

  • Page 7: [B] Km-260Bah

    [b] KM-260BAH AC SUPPLY VOLTAGE AMPERAGE MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) WATER gal./24HR (gal./100 lbs.) CEC/CEE TIER LEVEL ENERGY STAR...

  • Page 8: [C] Km-201Bwh

    [c] KM-201BWH AC SUPPLY VOLTAGE AMPERAGE MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) WATER gal./24HR (gal./100 lbs.) COND.WATER gal./24HR (gal./100 lbs) CEC/CEE TIER LEVEL...

  • Page 9: [D] Km-260Bwh

    [d] KM-260BWH AC SUPPLY VOLTAGE AMPERAGE MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) WATER gal./24HR (gal./100 lbs.) COND.WATER gal./24HR (gal./100 lbs) CEC/CEE TIER LEVEL...

  • Page 10: General Information

    II. GENERAL INFORMATION 1. CONSTRUCTION [a] KM-201BAH, KM-260BAH Side Panel (L) Fan Motor Overfl ow Pipe Front View Top Panel Front Cover Door Air Filter Louver Side Panel (R) Top Cover Drain Valve Evaporator Cleaning Valve Separator Water Tank Expansion...

  • Page 11: [B] Km-201Bwh

    [b] KM-201BWH Side Panel (L) Water Regulator Overfl ow Pipe Front View Top Panel Front Cover Door Side Panel (R) Louver Top Cover Drain Valve Cleaning Valve Evaporator Separator Water Tank Expansion Valve Control Switch Service Switch Control Box With Tank Removed Rear Panel Power Supply Cord Hot Gas Valve...

  • Page 12: [C] Km-260Bwh

    [c] KM-260BWH Side Panel (L) Overfl ow Pipe Front View Top Panel Front Cover Door Side Panel (R) Louver Top Cover Drain Valve Cleaning Valve Evaporator Separator Water Tank Expansion Valve Control Switch Service Switch Control Box With Tank Removed Rear Panel Power Supply Cord Hot Gas Valve...

  • Page 13: [D] Icemaking Compartment

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

  • 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, 9, 4, 7. [a] ONE MINUTE FILL CYCLE LED 8 is on.

  • Page 15: [E] Normal Harvest Cycle

    the control board setting, pump-out cycle occurs every cycle, or every 2nd, 5th, or 10th cycle (S1 dip switch 5 & 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).

  • Page 17: Control Board

    3. CONTROL BOARD * A HOSHIZAKI exclusive solid-state control is employed in crescent cubers. * All models are pretested and factory-adjusted. 1. Fragile, handle very carefully. 2. 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.

  • Page 18: [A] Control Board Layout

    [a] CONTROL BOARD LAYOUT Power Relay (FM off when LED on) Control Board Auxiliary Code V0 or Earlier V1 or Later Part Number P00013-02 P01771-02 Type HKM2006V003...

  • 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

    The dip switch is factory-adjusted to the following positions: Control Program Ver. Board (Auxiliary Code) KM-201BAH OFF OFF OFF OFF ON ON OFF ON OFF ON KM-260BAH OFF OFF OFF OFF ON ON ON OFF OFF ON 2.5 or earlier P00013-02 (V-0 or earlier)
  • Page 22 S1 Dip Switch Freeze Timer (9 & 10) Water Saver Timer (7 & 8) Pump-Out Frequency Control (5 & 6) Pump-Out Timer (3 & 4) Harvest Timer (1 & 2) Fig. 1 b) Harvest Timer (S1 dip switch 1 & 2) Used for adjustment of the harvest timer.
  • Page 23 Pump-out cycle always occurs on the 2nd harvest after startup. Then, depending on the pump-out frequency control setting (S1 dip switch 5 & 6), pump-out cycle occurs every cycle, or every 2nd, 5th, or 10th cycle. d) Pump-Out Frequency Control (S1 dip switch 5 & 6) The water tank drains at the frequency set by the pump-out frequency control.
  • Page 24 Do not adjust. 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 refi ll. i) Anti-Slush Control (S2 dip switch 5 & 6) [Program Ver. 2.5 or earlier] Do not adjust.
  • Page 25 Refi ll 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 refi ll. l) Harvest Completion Detection Control (S2 dip switch 4) [Program Ver. 3.2] Do not adjust.

  • Page 26: [D] Control Board Check Procedure

    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 fi nd overfreeze in a harvest cycle and at the beginning of a freeze cycle.

  • Page 27: [E] Control Board Replacement

    1) Check the dip switch settings to assure that S1 dip switch 3, 4, 7, 8, 9 & 10 and S2 dip switch 1 through 6 are in the factory default position. S1 dip switch 1, 2, 5, & 6 are cleaning adjustments and the settings are fl...

  • Page 28: Bin Control

    4) Check for resistance between the thermistor leads. Normal reading is within 4.7 to 6.2 kΩ. 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.

  • Page 29: Switches

    5) Disconnect the bin control at the 2-pin connector attached to the black wires coming from the K1 connector (pins 4 & 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.
  • Page 30 b) CIRCULATE When the service switch is active and placed in the “CIRCULATE” position, power is supplied to the pump only. This operation can be used to circulate cleaner for extended periods of time over the outside surface of the evaporator. c) WASH This machine utilizes a solenoid operated wash (bypass) valve.

  • Page 31: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERANT CIRCUIT [a] KM-201BAH, KM-260BAH...

  • Page 32: [B] Km-201Bwh, Km-260Bwh

    [b] KM-201BWH, KM-260BWH...

  • Page 33: Wiring Diagram

    2. WIRING DIAGRAM...

  • Page 34: Timing Chart

    MOTOR PUMP BOARD CONTROL...
  • Page 35 MOTOR PUMP BOARD CONTROL...
  • Page 36 MOTOR PUMP BOARD CONTROL...
  • Page 37 MOTOR PUMP BOARD CONTROL...

  • Page 38: Performance Data

    4. PERFORMANCE DATA [a] KM-201BAH APPROXIMATE ICE AMBIENT TEMP. PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE...

  • Page 39: [B] Km-260Bah

    [b] KM-260BAH APPROXIMATE ICE AMBIENT TEMP. PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE PSIG kg/cm TOTAL HEAT OF REJECTION FROM CONDENSER Note: Pressure data is recorded at 5 minutes into freezing cycle.

  • Page 40: [C] Km-201Bwh

    [c] KM-201BWH APPROXIMATE ICE AMBIENT TEMP. PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE PSIG kg/cm TOTAL HEAT OF REJECTION FROM CONDENSER TOTAL HEAT OF REJECTION FROM COMPRESSOR WATER FLOW FOR CONDENSOR...

  • Page 41: [D] Km-260Bwh

    [d] KM-260BWH APPROXIMATE ICE AMBIENT TEMP. PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE PSIG kg/cm TOTAL HEAT OF REJECTION FROM CONDENSER TOTAL HEAT OF REJECTION FROM COMPRESSOR WATER FLOW FOR CONDENSOR...

  • Page 42: Service Diagnosis

    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 70°F (21°C) or warmer air and 50°F (10°C) or warmer water temperatures.
  • Page 43 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 44: No Ice Production

    2. NO ICE PRODUCTION PROBLEM [1] The icemaker a) Power Supply will not start. b) Fuse (inside fused disconnect, if any) c) Control Switch d) Bin Control Switch e) High Pressure Control f) Transformer g) Wiring to Control Board h) Thermistor i) Hot Gas Solenoid Valve j) Water Supply Line...
  • Page 45 PROBLEM [1] (Continued) l) Control Board [2] Water a) Float Switch continues to be supplied, and the icemaker will not start. b) Control Board [3] Compressor a) Control Switch will not start or operates b) High Pressure intermittently. Control c) Overload Protector d) Starter e) Start Capacitor...
  • Page 46 PROBLEM [4] Water a) Inlet Water Valve continues to be supplied in freeze cycle. b) Control Board [5] No water a) Water Supply Line 1. Water pressure too low comes from Spray Tubes. Water Pump b) Inlet Water Valve will not start, or freeze cycle time is too c) Water System...

  • Page 47: Evaporator Is Frozen Up

    3. EVAPORATOR IS FROZEN UP PROBLEM [1] Freeze cycle a) Float Switch time is too long. b) Inlet Water Valve c) Control Board [2] All ice formed a) Evaporator on Evaporator b) Water Supply Line 1. Water pressure too low. does not fall into bin in c) Inlet Water Valve...

  • Page 48: Low Ice Production

    4. LOW ICE PRODUCTION PROBLEM [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.

  • Page 49: Other

    6. OTHER PROBLEM [1] Icemaker will a) Bin Control Switch not stop when bin is filled with ice. b) Control Board [2] Abnormal a) Pump Motor noise b) Fan Motor c) Compressor d) Refrigerant Lines [3] Ice in Storage a) Bin Drain Bin often melts.

  • Page 50: Removal And Replacement

    V. REMOVAL AND REPLACEMENT 1. This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fi re. 2. Move the control switch to the “OFF” position and turn off the power supply before servicing.

  • Page 51: [B] Refrigerant Recovery

    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.

  • Page 52: Brazing

    8) If necessary, add any remaining charge to the system through the low-side. Use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low-side access valve with the unit running. 9) Close the gauge manifold valves and disconnect the gauge manifold hoses. 10) Cap the access valves to prevent a possible leak.

  • Page 53: Compressor

    3. COMPRESSOR 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. 1. Always install a new drier every time the sealed refrigeration system is opened.

  • Page 54: Drier

    17) Refi t 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 1. Always install a new drier every time the sealed refrigeration system is opened.

  • Page 55: Hot Gas Valve

    7) Check for leaks using nitrogen gas (10 bar) and soap bubbles. 8) Evacuate the system and charge it with refrigerant (see “1. [c] EVACUATION AND RECHARGE”). 9) Refi t 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.
  • Page 56 Hot Gas Valve 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° 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.

  • Page 57: Expansion Valve

    6. EXPANSION VALVE 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 58: Air-Cooled Condenser

    Cut ties to make Bulb removable Bulb Insulation Hose Remove Expansion Valve Cover fi rst 7. AIR-COOLED CONDENSER 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.

  • Page 59: Water-Cooled Condenser

    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 fi ttings while purging with nitrogen gas fl owing at a pressure of 3 to 4 PSIG. 10) Use an electronic leak detector or soap bubbles to check for leaks.

  • Page 60: Fan Motor (Air-Cooled Model)

    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.

  • Page 61: Water Regulating Valve (Water-Cooled Model)

    5) Install the new fan motor in the reverse order of the removal procedure. 6) Refi t the panels in their correct positions. 7) Plug in the icemaker or connect the power source. Fan Motor 10. WATER REGULATING VALVE (WATER-COOLED MODEL) 1.
  • Page 62 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.

  • Page 63: Adjustment Of Water Regulating Valve (Water-Cooled Model)

    11. ADJUSTMENT OF 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.

  • Page 64: Pump Motor

    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.

  • Page 65: Water Valve

    13. WATER 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) Pinch and lower the hose clamp. 6) Disconnect the rubber hose from the water valve.

  • Page 66: Drain Valve, Cleaning Valve

    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.

  • Page 67: Float Switch

    15. FLOAT 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 fl oat switch lead. 4) Remove the two mounting screws. 5) Install the new fl oat switch in the reverse order of the removal procedure. 6) Refi...

  • Page 68: Bin Control Switch

    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. 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.

  • 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) Remove the two mounting screws, and pull the control box toward you. 4) Refi t 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.

  • 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] Control Board Transformer

    3) To 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 and lift off the transformer from the fi...

  • Page 73: Cube Guide

    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 refi t the cube guide, fi t the notches on both sides to the stoppers in the water tank.
  • Page 74 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.

  • Page 75: Spray Tube, Water Supply Pipe, Spray Guide

    22. SPRAY TUBE, WATER SUPPLY PIPE, 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. 6) Refi...

  • Page 76: Door

    23. DOOR 1) Open the door. 2) Unscrew and remove the hinges on both sides, and remove the door. 3) Refi t the removed parts in the reverse order of the removal procedure. Check that the door opens and closes smoothly. Door Hinge Fig.

  • 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 gal. (3.8 lit.) of water. 2) Remove the louver. Open the door and remove all ice from the evaporator and the storage bin.

  • Page 78: [B] Sanitizing Procedure

    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.

  • Page 79: Maintenance

    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 the “WASH”...

  • Page 80: [C] Air Filter (Air-Cooled Model)

    [c] AIR FILTER (AIR-COOLED MODEL) The plastic mesh air fi lter 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 fi lter at least twice a month. When it is clogged, use warm water and a neutral cleaner to wash the fi...
  • Page 81 “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 clean 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.

This manual is also suitable for:

Km-260bwhKm-201bwhKm-260bah

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