Hoshizaki dcm-75ibah service manual

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B. Important Notes for Component Replacement	42
C. Icemaking Unit	44
1. Upper Bearing Wear Check	44
2. Removal and Replacement of Extruding Head	45
3. Removal and Replacement of Auger	45
4. Removal and Replacement of Evaporator	46
5. Removal and Replacement of Mechanical Seal and Lower Housing	47
6. Removal and Replacement of Gear Motor	48
D. Dispense Components	49
1. Dispense Auger and Agitator	49
2. Dispense and Agitating Motors	49
V. Maintenance	50
VI. Preparing the Appliance for Periods of Non-Use	51
VII. Disposal	53
VIII. Technical Information	54
A. Specification Sheets	54
1. DCM-751BAH	54
2. DCM-751BAH-OS	55
3. DCM-751BWH	56
4. DCM-751BWH-OS	57
B. Performance Data	58
1. DCM-751BAH(-OS)	58
2. DCM-751BWH(-OS)	59
C. Wiring Diagrams	60
1. DCM-751B_H	60
2. DCM-751B_H-OS	61

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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 DiagnosisDiagnostic Procedure Service DiagnosisIce Production Check Page Page Page Page Control Board Check High-Pressure Switch HPS 5VDC CB K9 Connector See Fig5VDC 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 Float Switch Check and CleaningFloat Switch Cleaning Page No Ice Production Diagnostic TablesNo 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 DrainContinuous Dispense Mode SwitchPortion IV. Removal and Replacement of Components Service for Refrigerant LinesBrazing Refrigerant RecoveryEvacuation 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 Auger and Agitator Dispense ComponentsDispense and Agitating Motors Maintenance Schedule MaintenanceFrequency 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