Hoshizaki 73168 service manual Wiring Diagrams, HPR46A-D

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B. Wiring Diagrams

1. HPR46A(-D)

Transformer Output

10V at 115V

*

*High Pressure Switch

Cut-out

490±10 PSIG

 

 

Cut-in

370±20 PSIG

63

Page 62 Page 64
Image 63
Page 62 Page 64
Contents Superior Degree Reliability Number Issued Revised Hoshizaki AMERICA, INC Contents Page Page Unit Important Safety InformationSerious injury Indicates important information about the use and careDimensions Specifications Nameplate RatingsII. General Information Construction Power Switch ON, Rail Cooling Switch OFF Power Switch ON, Rail Cooling Switch Normal or LOWSequence of Operation Cabinet Defrost Cool Down RestartRail Defrost Cabinet Defrost Power Switch ON, Rail Cooling Switch OFFOperation Power Switch ON, Rail Cooling Switch OFF CabinetRail Cooling Power Switch ON, Rail Cooling Switch Normal or LOW PositionCabinet and Rail Cooling Control Board Location Control BoardControl Board Layout Front RearCompressor Short Cycle Protection LED Display and Service Lock-OutAlarm Signal Service MenuControls and Adjustments Switch SettingsTemperature Display Temperature Setpoint Energy Saving ModeCabinet Defrost Temperature Correction Factor Service Menu Access Service MenuService Menu Chart Alarm Signals Control Board Check ProcedureControl Board Replacement Thermistor Check Perimeter HeaterCompressor Protector Alarm Signals III. Service DiagnosisAlarm Priority Problem Reset, Corrections, and Adjustments Reset Options High Temperature Alarm E1Low Temperature Alarm E2 Cabinet Defrost Alarm E3 High Condenser Temperature Alarm clogged filter E7 Defrost Thermistor cabinet Malfunction Alarm E8 Possible Causes5a. Secondary Defrost Thermistor Rail, not used Condenser Thermistor Malfunction Alarm E9 Service Chart Control Board Alarms EA and EDNo Operation Cabinet Cooling Problem Possible Cause Remedy Rail Cooling Cabinet Defrost Other IV. Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Evacuation and Recharge R-404A BrazingPage Refrigerant Recovery Procedure Removal and Replacement of Refrigeration System CartridgePage Refrigeration System Pump‑Down Procedure Page Defrost Thermistor Rail Thermistor Removal and Replacement of Compressor Removal and Replacement of Cabinet Evaporator Removal and Replacement of Expansion Valve Removal and Replacement of Liquid Line Valve Removal and Replacement of Condenser Removal and Replacement of Thermistors and Thermostat Cabinet ThermistorDefrost Thermistor Rail Thermistor Defrost ThermostatCondenser Thermistor clogged filter Removal and Replacement of Defrost HeaterCabinet Fan Motor Removal and Replacement of Fan MotorsRail Fan Motor Condenser Fan MotorDoor Re-Hinging and Drawer Conversion Removal and Replacement of Door GasketWork Surface Cleaning and Maintenance InstructionsDoor/Drawer Gaskets Rail and Rail CoverExterior Cabinet InteriorAir Filter MaintenancePower Supply Connection Rail Condensate PanShutdown and Long Storage HPR100A-D Refrigeration Circuit VI. Technical InformationHPR46A-D Wiring Diagrams2a. HPR72A-D Auxiliary Code U-5 and Earlier 2b. HPR72A-D Auxiliary Code U-6 and Later Awaiting Data
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