Hoshizaki dcm-75ibah service manual Wiring Diagrams, DCM-751BH

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C. Wiring Diagrams

1. DCM-751B_H

		*
	* High Pressure Switch
	Air-Cooled Model	Water-Cooled Model
Cut-out	412±210 PSIG	384±210 PSIG
Cut-in	327±21 PSIG	284±21 PSIG
	60

Image 60

Contents DCM-751BAH-OS DCM-751BWH-OS Hoshizaki AMERICA, INC Contents Page Important Safety Information Page Construction and Water/Refrigeration Circuit Diagrams DCM-751BAH-OSDCM-751BWH-OS Ice Making Unit Water/Refrigeration Circuit Diagrams Spout Inlet Water Valve Water Supply Float Control Board Sequence Flow Chart DCM-751BH-OS ChartOperation DiagnosisService Diagnosis Diagnostic ProcedureIce Production Check Page Page Page Page Control Board Check 5VDC CB K9 Connector See Fig High-Pressure Switch HPS5VDC CB K9 Connector Component Pin # Wire Color 5VDC CB K8 Connector See Fig 5VDC CB K8 Connector Component Pin # Wire ColorGear Motor Protect Relay Gmpr Bin Control BC5VDC 0VDC Portion Signal #5 R Red K4 pin closest 5VDC Power Supply #3 W/BK 24VAC CB K2 Connector Connector Pin # Wire Color Neutral LBU Open ClosedBin Control Check Float Switch Check and Cleaning Float Switch CheckFloat Switch Cleaning Page Diagnostic Tables No Ice ProductionNo Ice Production Possible Cause Startup No Ice Production Possible Cause ShutdownIce/Water Dispensing Ice Dispense-Push ButtonIce Dispense-Opti-Serve Water Dispense-Push ButtonIII. Controls and Adjustments Control Board Layout DCM-751BHK2 Connector Drain Valve #10 W/BU DCM-751BH-OSLED Lights and Audible Alarm Safeties No. of Beeps Type of Alarm Reset Options Every 5 secIcemaking Sequence Sequence Step Energized Components Min MaxSettings and Adjustments Default Dip Switch SettingsInfrared Sensor Shutdown Delay S1 dip switch 1, 2 Drain Frequency Control S1 dip switchContinuous Dispensing Timer S1 dip switch 5 Bin Control Selector S1 dip switchBin Control Shutdown Delay S1 dip switch Factory Use S1 Dip Switch 9Power Switch, Control Switch, and Dispense Mode Switch ICEOFF DrainDispense Mode Switch ContinuousPortion IV. Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery BrazingEvacuation and Recharge R-404A Important Notes for Component Replacement Evaporator Assembly Components. See FigEvaporator Assembly Icemaking Unit Upper Bearing Wear CheckRemoval and Replacement of Extruding Head Removal and Replacement of AugerRemoval and Replacement of Evaporator 5b. Lower Housing Removal and Replacement of Gear Motor Dispense Components Dispense Auger and AgitatorDispense and Agitating Motors Maintenance Maintenance ScheduleFrequency Area Task VI. Preparing the Appliance for Periods of Non-Use Page VII. Disposal VIII. Technical Information Specification Sheets DCM-751BAHDesign without prior DCM-751BWH Potable Water WATER-COOLED Condenser779 758 Reference without *marks 738 719 Performance Data ICE Production800 363 Wiring Diagrams DCM-751BH-OS