Hoshizaki FS-1022MLH-C Removal and Replacement of Components, Service for Refrigerant Lines

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V. Removal and Replacement of Components

WARNING

1.This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire.

2.Move the power switch to the "OFF" position and unplug the icemaker from the electrical outlet and turn off the power supply to the condensing unit before servicing. Lockout/Tagout to prevent the power from being turned back on inadvertently.

3.CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are securely in place after the equipment is serviced. Make sure that none have fallen into the dispenser unit/storage bin.

4.Make sure all food zones in the icemaker and dispenser unit/storage are clean after the unit is serviced. For cleaning procedures, see "VI. Cleaning and Maintenance."

5.When replacing evaporator assembly and water circuit components, make sure there are no water leaks after the repair is complete.

A. Service for Refrigerant Lines

WARNING

1.Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA-certified service personnel.

2.Always recover the refrigerant and store it in an approved container. Do not discharge the refrigerant into the atmosphere.

3.Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). DO NOT use R‑404A as a mixture with pressurized air for leak testing.

CAUTION

1.Do not leave the system open for longer than 15 minutes when replacing or servicing parts. 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 drier every time the sealed refrigeration system is opened.

3.Do not replace the drier until after all other repair or replacement has been made. Install the new drier with the arrow on the drier in the direction of the refrigerant flow.

4.When brazing, protect the drier by using a wet cloth to prevent the drier from overheating. Do not allow the drier to exceed 250°F (121°C).

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Contents SRC-10H Hoshizaki AMERICA, INC Contents Page Serious injury Important Safety InformationIndicates important information about the use and care UnitFor SRC FS-1022MLH-C Specifications IcemakerSRC-10H Condensing UnitIcemaker FS-1022MLH-C II. General Information ConstructionCondensing Unit a SRC-10H Icemaking Unit Sequence Cycles and Shutdown Sequence of OperationDrain Cycle Shutdown Cycle Sequence Flow Chart Control Board Sequence Flow Chart FS-1022MLH-C/SRC-10HControl Board Control Board Control Board LayoutNo. of Beeps Type of Alarm Reset Options Every 5 sec LED Lights and Audible Alarm SafetiesSequence Step Energized Components Min MaxSeconds 1.6 minutes Factory Default Controls and AdjustmentsS1 Dip Switch Setting Infrared Sensor Shutdown Delay S1 Dip Switch Setting Dispense Time S1 Dip Switch Setting Drain Timer IntervalBackup S1 Dip Switch MechanicalShutdown Delay Bin ControlIII Wiring Diagrams High-Pressure Switch Control Low-Pressure SwitchSafety Low-Pressure Switch Manual Reset FS-1022MLH-C with SRC-10H Performance DataIce Production Check IV. Service DiagnosisDiagnostic Procedure Page Page Page Control Board Check 5VDC Page Infrared Sensor Check Bin Control CheckMechanical Backup Bin Control Check Page Float Switch Cleaning Float Switch Check and CleaningFloat Switch Check Page No Ice Production Possible Cause Startup Diagnostic ChartsNo Ice Production No Ice Production Possible Cause Shutdown Service for Refrigerant Lines Removal and Replacement of ComponentsEvacuation and Recharge R-404A Refrigerant RecoveryBrazing Component Important Notes for Component ReplacementEvaporator Assembly Components. See Fig Evaporator Assembly Upper Bearing Wear Check Removal and Replacement of CutterRemoval and Replacement of Auger Removal and Replacement of Extruding HeadRemoval and Replacement of Evaporator Page Removal and Replacement of Gear Motor 6b. Lower HousingPage Cleaning and Sanitizing Instructions VI. Cleaning and MaintenanceCleaning Solution Cleaning ProcedureFloat Switch Assembly Reservoir Cover Sanitizing Procedure Initial Sanitizing SolutionSanitizing Procedure Final Maintenance Frequency Area Task Maintenance ScheduleDrain the evaporator Preparing the Icemaker for Long StorageRemove the water from the icemaker water supply line
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