Manuals / Hoshizaki / Kitchen Appliance / Ice Maker

Hoshizaki F-1000MRF/-C Vi. Removal And Replacement Of Components, Service For Refrigerant Lines

Models: F-1000MWF/-C F-1000MRF/-C F-1000MLF/-C F-1000MAF/-C

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VI. REMOVAL AND REPLACEMENT OF COMPONENTS

VI. REMOVAL AND REPLACEMENT OF COMPONENTS

IMPORTANT

Ensure all components, fasteners and thumbscrews are securely in place

after the equipment is serviced.

IMPORTANT

1.The Polyol Ester (POE) oils used in R-404A units can absorb moisture quickly. Therefore it is important to prevent moisture from entering the system when replacing or servicing parts.

2.Always install a new filter drier every time the sealed refrigeration sys- tem is opened.

3.Do not leave the system open for longer than 15 minutes when replac- ing or servicing parts.

1.SERVICE FOR REFRIGERANT LINES

[a] REFRIGERANT RECOVERY [EXCEPT F-1000MLF(-C)]

The icemaker unit is provided with two Refrigerant Access Valves - one on the low-side and one on the high-side line. Using proper refrigerant practices recover the refrigerant from the Access Valves and store it in an approved container. Do not discharge the refrig- erant into the atmosphere.

[b] REFRIGERANT RECOVERY [F-1000MLF ONLY]

The refrigerant charge on the F-1000MLF is provided from the external Compressor Rack Assembly. In the event that service is required on the F-1000MLF, close the Suction and Liquid Line Shut-off Valves located at the rear of the unit. Attach the Service Manifold Hoses to the High-side, Low-side and Evaporator Pressure Regulator (E.P.R.) access ports to purge or evacuate the unit. To recharge the system, simply open the Suction and Liquid Line Shut-off Valves after evacuating the F-1000MLF.

[c]EVACUATION AND RECHARGE [R-404A]

1)Attach Charging Hoses, a Service Manifold and a Vacuum Pump to the system. Be sure to connect Charging Hoses to both High-side and Low-side Access Valves.

IMPORTANT

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

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Hoshizaki F-1000MRF/-C, F-1000MAF/-C, F-1000MLF/-C Vi. Removal And Replacement Of Components, Service For Refrigerant Lines

Contents

HOSHIZAKI MODULAR FLAKERF-1000MAF/-C F-1000MWF/-C F-1000MRF/-C F-1000MLF/-C MODELHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA Phone 1-800-233-1940 Technical ServiceComplete and detailed explanation of the problem Attn HOSHIZAKI Technical Support DepartmentCONTENTS V. SERVICE DIAGNOSIS IV. ADJUSTMENT OF COMPONENTS1. ADJUSTMENT OF WATER REGULATING VALVE VI. REMOVAL AND REPLACEMENT OF COMPONENTSI. SPECIFICATION 1. ICEMAKER F-1000MAFF-1000MWF F-1000MRF F-1000MLF F-1000MAF-C F-1000MWF-C F-1000MRF-C F-1000MLF-C 2. CONDENSER UNIT URC-6FREFRIGERANT ELECTRICAL CONDENSER HEAD PRESSURE CONTROL SPECIFICATIONS MODEL URC-6FEXTERIOR DIMENSIONS W x D x H REFRIGERANT CHARGE WEIGHT CONNECTIONS AMBIENT CONDITIONControl Water Valve Bin Control Ice Chute Evaporator Expansion Valve II. GENERAL INFORMATION 1. CONSTRUCTIONF-1000MAF/-C Flush Water Valve Control Box Gear MotorControl Water Valve Bin Control Ice Chute Evaporator Expansion Valve F-1000MWF/-CWater Supply Inlet Junction Box Water Regulator Compressor Drier Flush Water Valve Control Box Gear MotorControl Water Valve Bin Control Ice Chute Evaporator Expansion Valve F-1000MRF/-CWater Supply Inlet Junction Box Compressor Receiver Tank Drier Flush Water Valve Control Box Gear MotorExchanger F-1000MLF/-CWater Supply Inlet Junction Box Hot Gas Valve Solenoid Valve Heat Control Water Valve Bin Control Ice Chute Evaporator Expansion Valve2. CONTROL BOX LAYOUT F-1000MAF/-CGEAR MOTOR F-1000MWF, F-1000MRF/-C CONTROL TIMERGEAR MOTOR PROTECT RELAY CONTROL TIMER FLUSH TIMERCONNECTOR FLUSH FLUSH SWITCH ICE POWER SWITCH FUSE FUSE GEAR MOTORIII. TECHNICAL INFORMATION 1. WATER CIRCUIT AND REFRIGERATION CIRCUIT F-1000MAF/-CF-1000MWF/-C F-1000MRF/-C F-1000MLF/-C 2. WIRING DIAGRAMS F-1000MAF/-C, F-1000MWF/-C, F-1000MRF/-CF-1000MLF/-C 3. 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 4. TIMING CHART Miswiring. Circuit Protect Relay operatesProper wiring. The unit starts 150 sec 1 sec60 sec 1. CIRCUIT PROTECT RELAY 2. WATER LEVEL UPPER 3. FLOAT SWITCH LOWER 5. PERFORMANCE DATA F-1000MAFF-1000MWF F-1000MRF F-1000MLF F-1000MAF-C F-1000MWF-C F-1000MRF-C F-1000MLF-C IV. ADJUSTMENT OF COMPONENTS 1. ADJUSTMENT OF WATER REGULATING VALVE - WATER-COOLED MODEL ONLY1. NO ICE PRODUCTION V. SERVICE DIAGNOSISPROBLEM POSSIBLE CAUSEPROBLEM POSSIBLE CAUSEREMEDY POSSIBLE CAUSE PROBLEM2. LOW ICE PRODUCTION REMEDYPOSSIBLE CAUSE 3. OTHERSPROBLEM REMEDYa REFRIGERANT RECOVERY EXCEPT F-1000MLF-C VI. REMOVAL AND REPLACEMENT OF COMPONENTS1. SERVICE FOR REFRIGERANT LINES b REFRIGERANT RECOVERY F-1000MLF ONLY2. BRAZING DANGER 3. REMOVAL AND REPLACEMENT OF COMPRESSOR IMPORTANT 4. REMOVAL AND REPLACEMENT OF DRIER 5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE Page Page EXTRUDING HEAD 8. 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 Barrier9. REMOVAL AND REPLACEMENT OF FAN MOTOR 10. REMOVAL AND REPLACEMENT OF CONTROL WATER VALVE11. REMOVAL AND REPLACEMENT OF FLUSH WATER VALVE VII. MAINTENANCE AND CLEANING INSTRUCTIONS 1. PREPARING THE ICEMAKER FOR LONG STORAGEWater-cooled Models 1 Turn off the power supply and wait for 3 minutes2 Turn on the power supply and wait for 20 seconds 3 Close the Water Supply Line Shut-off Valve2. CLEANING INSTRUCTIONS Page 14 Turn off the power supply when the Gear Motor starts 6 Move the Flush Switch to the “ICE” position11 Move the Flush Switch to the “ICE” position 16 Move the Flush Switch to the “ICE” position STEP14 Turn off the power supply after 30 minutes If the solution is left on these parts, they will rust13 Turn on the power supply and run the icemaker 16 Flush out any solution from the Storage Bin3. MAINTENANCE 3 Air Filter Air-cooled model only 4 Condenser Except water-cooled model