Hoshizaki F-80 I MWH (-c) HOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA

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HOSHIZAKI AMERICA, INC.

IMPORTANT

Only qualified service technicians should attempt to service or maintain this icemaker. 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.

HOSHIZAKI AMERICA, INC.

618 Highway 74 South

Peachtree City, GA 30269

Attn: HOSHIZAKI Technical Support Department

Phone: 1-800-233-1940 Technical Service

(770)487-2331 Fax: 1-800-843-1056

(770)487-3360

Web Site: www.hoshizakiamerica.com

Note: To expedite assistance, all correspondence/communication MUST include the following information:

•Model Number

•Serial Number

•Complete and detailed explanation of the problem

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Contents Modular Flaker Models F-801MAH-C F-801MWH-C Number Issued Revised“A Superior Degree of Reliability” HoshizakiHoshizaki America, IncHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA Phone 1-800-233-1940 Technical Service 770 487-2331 FaxComplete and detailed explanation of the problem Attn HOSHIZAKI Technical Support DepartmentCONTENTS 8. Removal and Replacement of Fan Motor 5. Removal and Replacement of Expansion Valve7. Removal and Replacement of Evaporator Assembly 9. Removal and Replacement of Control Water ValveI. Specification 1. Icemaker F-801MAHF-801MWH F-801MAH-C F-801MWH-C II. General Information 1. Construction F-801MAH/-CF-801MWH/-C Water Supply Inlet Junction Box Water Regulator Compressor Drier2. Control Box Layout GEAR MOTORRUN CAPACITOR CONTROL TIMERFLUSH III. Technical Information 1. Water Circuit and Refrigeration Circuit F-801MWH/-C 2. Wiring Diagrams F-801MAH/-C, F-801MWH/-C3. Sequence of Electrical Circuit b When reservoir has been filled, gear motor starts immediately c Compressor starts about 60 sec. after gear motor starts Page e Low water except water-cooled model Page Page h When flush timer operates for 15 min. every 12 hours Page Page Proper wiring. The unit starts 4. Timing ChartMiswiring. Circuit Protect Relay operates 60 sec 150 sec1 sec 1. CIRCUIT PROTECT RELAY 2. WATER LEVEL UPPER 3. FLOAT SWITCH LOWER 5. Performance Data WATER FLOW FOR CONDENSER F-801MAH-C F-801MWH-C IV. Adjustment of Components 1. Adjustment of Water Regulating Valve water-cooled model only2. Adjustment of Flake Size POSSIBLE CAUSE V. Service Diagnosis 1. No Ice ProductionPROBLEM REMEDYREMEDY POSSIBLE CAUSE PROBLEM2. Low Ice Production REMEDY3. Other a Refrigerant Recovery VI. Removal and Replacement of Components1. Service for Refrigerant Lines b Evacuation and Recharge R-404A2. Brazing DANGER 3. Removal and Replacement of Compressor 4. Removal and Replacement of Drier 5. Removal and Replacement of Expansion Valve Page Extruding Head 7. Removal and Replacement of Evaporator AssemblyCutter AugerBearing-Lower and Mechanical Seal Gear Motor28 Move the flush switch to the ICE position 27 When replacing the evaporatorc Check for leaks using nitrogen gas 140 PSIG and soap bubbles 30 Turn on the power supplyRubber O-ring Nylon Ring Bolt Washer Cutter Extruding Head Washer Auger Mechanical Seal O-ring Bearing Lower Bolt WasherCoupling - Spline Socket Head Cap Screw Evaporator Washer Socket Head Cap Screw Barrier8. Removal and Replacement of Fan Motor 9. Removal and Replacement of Control Water Valve10. Removal and Replacement of Flush Water Valve VII. Cleaning and Maintenance 1. Preparing the Icemaker for Long Storage2. Cleaning and Sanitizing Instructions a Cleaning Solutionb Cleaning Procedure c Sanitizing Solution d Sanitizing Procedure - Initiale Sanitizing Procedure - Final 21 Flush out any solution from the storage bin 18 Move the flush switch to the “ICE” position and run the icemaker19 Turn off the power supply after 30 minutes 22 Turn on the power supply and start the automatic icemaking process3. Maintenance 3 Air Filter air-cooled model only 4 Condenser except water-cooled model