Hoshizaki F-80 I MWH (-c) Removal and Replacement of Expansion Valve, a Cleaning Solution

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Contents Number Issued Revised “A Superior Degree of Reliability” Modular Flaker Models F-801MAH-C F-801MWH-C HoshizakiHoshizaki America, IncPhone 1-800-233-1940 Technical Service 770 487-2331 Fax Complete and detailed explanation of the problemHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA Attn HOSHIZAKI Technical Support DepartmentCONTENTS 5. Removal and Replacement of Expansion Valve 7. Removal and Replacement of Evaporator Assembly8. Removal and Replacement of Fan Motor 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 MOTORFLUSH CONTROL TIMERRUN CAPACITOR 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 Miswiring. Circuit Protect Relay operates 4. Timing ChartProper wiring. The unit starts 1 sec 150 sec60 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 V. Service Diagnosis 1. No Ice Production PROBLEMPOSSIBLE CAUSE REMEDYPOSSIBLE CAUSE PROBLEM 2. Low Ice ProductionPOSSIBLE CAUSE REMEDY3. Other VI. Removal and Replacement of Components 1. Service for Refrigerant Linesa Refrigerant Recovery 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 7. Removal and Replacement of Evaporator Assembly CutterExtruding Head AugerBearing-Lower and Mechanical Seal Gear Motor27 When replacing the evaporator c Check for leaks using nitrogen gas 140 PSIG and soap bubbles28 Move the flush switch to the ICE position 30 Turn on the power supplyAuger Mechanical Seal O-ring Bearing Lower Bolt Washer Coupling - SplineRubber O-ring Nylon Ring Bolt Washer Cutter Extruding Head Washer 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 18 Move the flush switch to the “ICE” position and run the icemaker 19 Turn off the power supply after 30 minutes21 Flush out any solution from the storage bin 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
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