Hoshizaki dcm-75ibah service manual

Page 6

WARNING, continued

•Children should be properly supervised around the appliance.

•Do not climb, stand, or hang on the appliance or allow children or animals to do so. Serious injury could occur or the appliance could be damaged.

•Do not use combustible spray or place volatile or flammable substances near the appliance. They might catch fire.

•Keep the area around the appliance clean. Dirt, dust, or insects in the appliance could cause harm to individuals or damage to the appliance.

NOTICE

•Follow the instructions in this manual carefully to reduce the risk of costly water damage.

•In areas where water damage is a concern, install in a contained area with a floor drain.

•Install the appliance in a location that stays above freezing. Normal operating ambient temperature must be within 45°F to 100°F (7°C to 38°C).

•Do not leave the appliance on during extended periods of non-use, extended absences, or in sub-freezing temperatures. To properly prepare the appliance for these occasions, follow the instructions in "V.D. Preparing the Appliance for Periods of Non-Use."

•Keep ventilation openings, in the appliance enclosure or in the built-in structure, clear of obstruction.

•Do not place objects on top of the appliance.

•The storage bin is for ice use only. Do not store anything else in the storage bin.

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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 Operation Control Board Sequence Flow Chart DCM-751BH-OSChart 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 Gear Motor Protect Relay Gmpr 5VDC CB K8 Connector See Fig5VDC CB K8 Connector Component Pin # Wire Color 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 Dispense-Opti-Serve Ice/Water DispensingIce Dispense-Push Button Water Dispense-Push ButtonIII. Controls and Adjustments Control Board Layout DCM-751BHK2 Connector Drain Valve #10 W/BU DCM-751BH-OSIcemaking Sequence Sequence Step LED Lights and Audible Alarm SafetiesNo. of Beeps Type of Alarm Reset Options Every 5 sec Energized Components Min MaxInfrared Sensor Shutdown Delay S1 dip switch 1, 2 Settings and AdjustmentsDefault Dip Switch Settings Drain Frequency Control S1 dip switchBin Control Shutdown Delay S1 dip switch Continuous Dispensing Timer S1 dip switch 5Bin Control Selector S1 dip switch Factory Use S1 Dip Switch 9OFF Power Switch, Control Switch, and Dispense Mode SwitchICE 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