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Hoshizaki M029-897 B. Water/Refrigeration Circuit Diagram, Air-Cooled Model SAA, Water Tank

Models: M029-897

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B. Water/Refrigeration Circuit Diagram

1. Air-Cooled Model (SAA)

Inlet

Water

Valve

Thermostatic Expansion Valve

Evaporator

Evaporator Thermistor

Water	Water Tank
Water
Pump

Condenser

Hot Gas

Heat Exchanger

Fan Motor

Valve Strainer

Compressor

Drier

Water Circuit

Refrigerant Circuit

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Hoshizaki M029-897 service manual B. Water/Refrigeration Circuit Diagram, Air-Cooled Model SAA, Water Tank

Contents

Stackable Square Cuber Model IM-500SAA HoshizakiHoshizaki America, IncAttn Hoshizaki Technical Support Department Complete and detailed explanation of the problemPhone 1-800-233-1940 770 Fax 618 Highway 74 South Peachtree City, GACONTENTS appliance or property Important Safety Informationserious injury Indicates a situation which could result in damage to theWARNING, continued A. Construction I. Construction and Water/Refrigeration Circuit Diagram1. Air-Cooled Model SAA 1. Air-Cooled Model SAA B. Water/Refrigeration Circuit DiagramWater Tank IM Control Board II. Sequence of Operation and Service DiagnosisA. Sequence of Operation Flow Chart Shutdown and Restart Sequence Flow Chart3. Freeze Cycle B. Sequence of Operation1. Startup Cycle 2. Harvest Cycle4. Shutdown No Ice Production - Possible Cause C. Service Diagnosis TableSlab Does Not Break Into Separate Cubes - Possible Cause Low Ice Production - Possible CauseLong Harvest Cycle Long Freeze CycleCloudy Cubes - Possible Cause Large-Hole Cubes - Possible Cause Also see III.H.1. Dimple Diameter1. Bin Control Check D. Bin Control Check and Cleaning2. Bin Control Cleaning E. Evaporator Thermistor Check B. Control Board III. Controls and Adjustments A. Control SwitchIM Control Board 1. Control Board LayoutPart Number P01873-01 Version 1.3A or Later 2. SERVICE 1 and SERVICE 2 Buttons 1. RESET ButtonC. Control Buttons D. Control Board Settings DO NOT ADJUST Control Board CB Setting MenuDO NOT ADJUST DO NOT ADJUSTIM-500SAA Control Board CB Setting MenuDO NOT ADJUST DO NOT ADJUST4. Press the RESET button to return to list E. Control Board Information Display2. Use the SERVICE 1 and SERVICE 2 buttons to move through the list 3. Press the RESET button to view the item’s valueexample, 655,350 cycles Freeze cycles interrupted by bin control shutdown1.0A, displays as follows 1. Control Board Replacement F. Control Board Model Code Setting2. Checking or Changing the Control Board Model Code Page G. Error Codes b To decrease dimple diameter H. Quick Adjustments1. Dimple Diameter a To increase dimple diameterNormal Position 2. Ice ClarityDrain Position A. Refrigeration Circuit Service Information IV. Refrigeration Circuit and Component Service Information1. Refrigerant Recovery 3. Evacuation and Recharge R-404A 2. BrazingB. Component Service Information Refer to illustration for assembly Refer to illustration for assemblyAssembly J. Pump Motor AssemblyV. Maintenance 1. Remove the water from the icemaker water supply line VI. Preparing the Icemaker for Periods of Non-Use2. Drain the water tank VII. Disposal VIII. Technical Information A. Specification Data1. IM-500SAA 1. IM-500SAA B. Performance Data1. IM-500SAA C. Wiring Diagram