Hoshizaki FS-1022MLH-C service manual Control Board

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C. Control Board

•A Hoshizaki exclusive control board is employed in Hoshizaki Modular Flakers.

•All models are pre-tested and factory set.

CAUTION

1.The control board is fragile; handle very carefully.

2.The control board contains integrated circuits, which are susceptible to failure due to static discharge. It is especially important to touch the metal part of the icemaker before handling or replacing the control board.

3.Do not touch the electronic devices on the control board or the back of the control board.

4.Do not change wiring and connections. Do not misconnect terminals.

5.Do not short out power supply to test for voltage.

6.Always replace the whole control board assembly if it goes bad.

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Contents SRC-10H Hoshizaki AMERICA, INC Contents Page Important Safety Information Serious injuryIndicates important information about the use and care UnitFor SRC Specifications Icemaker FS-1022MLH-CCondensing Unit SRC-10HII. General Information Construction Icemaker FS-1022MLH-CCondensing Unit a SRC-10H Icemaking Unit Sequence of Operation Sequence Cycles and ShutdownDrain Cycle Shutdown Cycle Control Board Sequence Flow Chart FS-1022MLH-C/SRC-10H Sequence Flow ChartControl Board Control Board Layout Control BoardLED Lights and Audible Alarm Safeties No. of Beeps Type of Alarm Reset Options Every 5 secSequence Step Energized Components Min MaxS1 Dip Switch Setting Infrared Sensor Shutdown Delay Controls and AdjustmentsSeconds 1.6 minutes Factory Default S1 Dip Switch Setting Drain Timer Interval S1 Dip Switch Setting Dispense TimeS1 Dip Switch Mechanical BackupShutdown Delay Bin ControlIII Wiring Diagrams Safety Low-Pressure Switch Manual Reset Control Low-Pressure SwitchHigh-Pressure Switch Performance Data FS-1022MLH-C with SRC-10HDiagnostic Procedure IV. Service DiagnosisIce Production Check Page Page Page Control Board Check 5VDC Page Bin Control Check Infrared Sensor CheckMechanical Backup Bin Control Check Page Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Page No Ice Production Diagnostic ChartsNo Ice Production Possible Cause Startup No Ice Production Possible Cause Shutdown Removal and Replacement of Components Service for Refrigerant LinesBrazing Refrigerant RecoveryEvacuation and Recharge R-404A Evaporator Assembly Components. See Fig Important Notes for Component ReplacementComponent Evaporator Assembly Removal and Replacement of Cutter Upper Bearing Wear CheckRemoval and Replacement of Extruding Head Removal and Replacement of AugerRemoval and Replacement of Evaporator Page 6b. Lower Housing Removal and Replacement of Gear MotorPage VI. Cleaning and Maintenance Cleaning and Sanitizing InstructionsCleaning Solution Cleaning ProcedureFloat Switch Assembly Reservoir Cover Sanitizing Solution Sanitizing Procedure InitialSanitizing Procedure Final Maintenance Maintenance Schedule Frequency Area TaskRemove the water from the icemaker water supply line Preparing the Icemaker for Long StorageDrain the evaporator