Hoshizaki F-1000MAF-22C Service Manual
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Hoshizaki F-1000MAF-22C Service Manual

Hoshizaki F-1000MAF-22C Service Manual

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73088
NO:
JULY. 13, 1999
ISSUED:
DEC. 15, 2003
REVISED:
HOSHIZAKI
MODULAR FLAKER
MODEL
F-1000MAF-22C
SERVICE MANUAL

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Summary of Contents for Hoshizaki F-1000MAF-22C

  • Page 1 73088 JULY. 13, 1999 ISSUED: DEC. 15, 2003 REVISED: HOSHIZAKI MODULAR FLAKER MODEL F-1000MAF-22C SERVICE MANUAL...
  • Page 2 No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual. HOSHIZAKI provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker. Should the reader have any questions or concerns which have not been satisfactorily addressed, please call or write to the HOSHIZAKI Technical Support Department for assistance.

  • Page 3: Table Of Contents

    Please review this manual. It should be read carefully before the icemaker is serviced or maintenance operations are performed. Only qualified service technicians should service and maintain the icemaker. This manual should be made available to the technician prior to service or maintenance. I.

  • Page 4: Specifications

    I. SPECIFICATION 1. ICEMAKER F-1000MAF-22 AC SUPPLY VOLTAGE COMPRESSOR GEAR MOTOR FAN MOTOR OTHER MAXIMUM FUSE SIZE MAX. HACR BREAKER (USA ONLY) MAX. CIRC. BREAKER (CANADA ONLY) MINIMUM CIRCUIT AMPACITY APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE QUALITY...

  • Page 5: General Information

    II. GENERAL INFORMATION 1. CONSTRUCTION F-1000MAF-22 Control Water Valve Bin Control Ice Chute Evaporator Expansion Valve Flush Water Valve Control Box Gear Motor Water Supply Inlet Junction Box Condenser Fan Motor Compressor Drier...

  • Page 6: Control Box Layout

    2. CONTROL BOX LAYOUT F-1000MAF-22 CONNECTOR PRESSURE SWITCH START CAPACITOR CAPACITOR Note: The above component names are identical with the Wiring Label, but not with the Parts List. WATER CONTROL RELAY FLUSH TIMER TRANSFORMER GEAR MOTOR RELAY CIRCUIT PROTECT RELAY MOTOR GEAR MOTOR PROTECT RELAY...

  • Page 7: Technical Information

    III. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERATION CIRCUIT F-1000MAF-22...

  • Page 8: Wiring Diagram

    2. WIRING DIAGRAMS F-1000MAF-22...

  • Page 9: Sequence Of Electrical Circuit

    3. SEQUENCE OF ELECTRICAL CIRCUIT [a] When Power Switch is moved to “ON” position and Flush Switch to “ICE” position, water starts to be supplied to Reservoir.
  • Page 10 [b] When Reservoir has been filled, Gear Motor starts immediately.
  • Page 11 [c] Compressor starts about 60 sec. after Gear Motor starts.
  • Page 12 [d] Bin Control operates, and about 6 sec. later, Compressor and Gear Motor stop simultaneously.
  • Page 13 [e] Low Water...
  • Page 14 [f] Dirty Air Filter, Pressure Switch to “OPEN”, Compressor and Gear Motor operates intermittently.
  • Page 15 [g] When Flush Switch is moved to “FLUSH” position, Flush Water Valve opens and flushes Reservoir and Evaporator.
  • Page 16 [h] When Flush Timer operates (for 15 min. every 12 hours).
  • Page 17 [i] When 208-230V are supplied to Circuit Protect Relay, it protects the circuit from miswiring. If the power supply is properly connected, the contact of Circuit Protect Relay does not move even when the coil is energized.
  • Page 18 [j] When input voltage is too low, (Less than 70%), Gear Motor Fuse (1.5A) is blown causing the Compressor and Gear Motor to turn off immediately.

  • Page 19: Timing Chart

    4. TIMING CHART 1. CIRCUIT PROTECT RELAY UPPER 2. WATER LEVEL LOWER BOTTOM UPPER 3. FLOAT SWITCH LOWER 4. WATER CONTROL RELAY 5. CONTROL WATER VALVE 1 - 2 6. FLUSH TIMER 2 - 3 FLUSH 7. FLUSH SWITCH 8. FLUSH WATER VALVE 9.
  • Page 20 LOW WATER 1. CIRCUIT PROTECT RELAY UPPER 2. WATER LEVEL LOWER BOTTOM UPPER 3. FLOAT SWITCH LOWER 4. WATER CONTROL RELAY 5. CONTROL WATER VALVE 1 - 2 6. FLUSH TIMER 2 - 3 FLUSH 7. FLUSH SWITCH 8. FLUSH WATER VALVE 9.
  • Page 21 1. CIRCUIT PROTECT RELAY UPPER 2. WATER LEVEL LOWER BOTTOM UPPER 3. FLOAT SWITCH LOWER 4. WATER CONTROL RELAY 5. CONTROL WATER VALVE 1 - 2 6. FLUSH TIMER 2 - 3 FLUSH 7. FLUSH SWITCH 8. FLUSH WATER VALVE 9.

  • Page 22: Performance Data

    5. PERFORMANCE DATA F-1000MAF-22 APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./DAY ( kg/day) APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal. / day (l/day) EVAPORATOR OUTLET TEMP. ˚F (˚C) HEAD PRESSURE PSIG (kg/sq.cmG) SUCTION PRESSURE PSIG (kg/sq.cmG) TOTAL HEAT OF REJECTION Note: The data without *marks should be used for reference.

  • Page 23: Service Diagnosis

    IV. SERVICE DIAGNOSIS 1. NO ICE PRODUCTION PROBLEM [1] The icemaker will not start. [2] Water flow does not stop, and the icemaker will not start [3] Water has been supplied, but the icemaker will not start. POSSIBLE CAUSE Power Supply OFF position.
  • Page 24 PROBLEM Water has been supplied, Fan Motor starts, but Gear Motor and Compressor will not start. Gear Motor and Compressor start but operate intermittently. Gear Motor starts, but Compressor will not start or operates intermittently. Gear Motor and Compressor start, but no ice is produced.

  • Page 25: Low Ice Production

    2. LOW ICE PRODUCTION PROBLEM Low ice production Refrigerant Line High-side Pressure Too High Expansion Valve (not adjustable) POSSIBLE CAUSE Gas leaks. Refrigerant line clogged. Overcharged. Dirty Air Filter or Condenser. Ambient or condenser water temperature too warm. Fan rotating too slow.

  • Page 26: Others

    3. OTHERS...

  • Page 27: Removal And Replacement Of Components

    5) Disconnect the Vacuum Pump, and attach a Refrigerant Service Cylinder to the High- side line. Remember to loosen the connection, and purge the air from the Hose. See the Nameplate for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No. 700-88 be used.

  • Page 28: Brazing

    9) Close the Refrigerant Access Valve, and disconnect the Hoses and Service Manifold. 10) Cap the Access Valve to prevent a possible leak. 2. BRAZING 1. Refrigerant R-22 itself is not flammable, explosive or poisonous. How- ever, when exposed to an open flame, the refrigerant creates phosgene gas, hazardous in large amounts.

  • Page 29: Removal And Replacement Of Compressor

    3. REMOVAL AND REPLACEMENT OF COMPRESSOR Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repairs or replacement have been made. 1) Turn off the power supply, and remove the panels. 2) Remove the Terminal Cover on the Compressor, and disconnect the Compressor Wiring.

  • Page 30: Removal And Replacement Of Drier

    14) Evacuate the system, and charge it with refrigerant. For the air-cooled and water-cooled models, see the Nameplate for the required refrigerant charge and type. For the remote air-cooled models, see the label on the Control Box. 15) Connect the Terminals to the Compressor, and replace the Terminal Cover in its correct position.

  • Page 31: Removal And Replacement Of Expansion Valve

    5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE Sometimes moisture in the refrigerant circuit exceeds the Drier capacity and freezes up at the Expansion Valve. Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repairs or replacement have been made.

  • Page 32: Removal And Replacement Of Evaporator Assembly

    6. REMOVAL AND REPLACEMENT OF EVAPORATOR ASSEMBLY 1) Turn off the power supply. 2) Remove the panels. 3) Move the Flush Switch to the "FLUSH" position. 4) Turn on the power supply and drain out all water from the water line. 5) Turn off the power supply.
  • Page 33 13) Recover the refrigerant and store it in an approved container, if required by an applicable law. Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repairs or replacement have been made.
  • Page 34 25) Remove the three Socket Head Cap Screws securing the Gear Motor. 26) Assemble the removed parts in the reverse order of the above procedure. Be careful not to scratch the surface of the O-ring, or it may cause water leaks. Handle the Mechanical Seal with care not to scratch nor to contaminate its contact surface.
  • Page 35 Auger Mechanical Seal O-ring Bearing - Lower Bolt Washer Coupling - Spline Gear Motor Rubber O-ring Nylon Ring Bolt Washer Cutter Extruding Head Washer Socket Head Cap Screw Evaporator Washer Socket Head Cap Screw Barrier...

  • Page 36: Removal And Replacement Of Fan Motor

    7. REMOVAL AND REPLACEMENT OF FAN MOTOR 1) Turn off the power supply and remove the panels. 2) Remove the wire connectors from the Fan Motor leads. 3) Remove the Fan Motor Bracket and Fan Motor. 4) Install the new Fan Motor. 5) Replace the Fan Motor Bracket and the wire connectors.

  • Page 37: Removal And Replacement Of Flush Water Valve

    9. REMOVAL AND REPLACEMENT OF FLUSH WATER VALVE 1) Turn off the power supply, remove the panels and close the Water Supply Line Shut- off Valve. 2) Remove the Clamp and disconnect the Hose from the Flush Water Valve. Note: Water may still remain inside the Evaporator. Be sure to drain the water into the Drain Pan.

  • Page 38: Maintenance And Cleaning Instructions

    VI. MAINTENANCE AND CLEANING INSTRUCTIONS Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment. 1. PREPARING THE ICEMAKER FOR LONG STORAGE When shutting off the icemaker for an extended time, drain out all water from the water line and remove the ice from the Storage Bin.

  • Page 39: Cleaning Instructions

    2. CLEANING INSTRUCTIONS 1. HOSHIZAKI recommends cleaning this unit at least once a year. More frequent cleaning, however, may be required in some existing water conditions. 2. To prevent injury to individuals and damage to the icemaker, do not use ammonia type cleaners.
  • Page 40 6) Turn on the power supply and drain out all water from the water line. 7) Turn off the power supply. 8) Remove the Control Water Valve by releasing the Fitting Nut. Do not lose the Packing. 9) Remove the Cover of the Reservoir. 10) Fill the Reservoir with the cleaning solution.
  • Page 41 5) Replace the Cover of the Reservoir and the Control Water Valve in their correct position. 6) Move the Flush Switch to the “ICE” position. 7) Replace the Top Panel and the Front Panel in their correct position. 8) Allow the icemaker to set for about 10 minutes before the operation. Then, turn on the power supply, and make ice using the solution until the icemaker stops icemaking.
  • Page 42 6) Remove the two Thumbscrews, Plate, and Gasket at the top of the Ice Chute, and then remove the Bin Control Assembly by sliding it slightly toward the Spout and lifting it off. 7) Disassemble the Bin Control Assembly by removing the two Snap Pins, Shaft and Activator.

  • Page 43: Maintenance

    Consult with your local distributor about inspection and maintenance service. To obtain the name and phone number of your local distributor, call Hoshizaki Technical Support at 1-800-233-1940. 1) Stainless Steel Exterior To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up.
  • Page 44 3) Air Filter A 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 clogged, use warm water and a neutral cleaner to wash the filter.

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