Hoshizaki DCM-750BAH, DCM-750BWH Removal and Replacement of Inlet or Dispensing Water Valve

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J. Removal and Replacement of Inlet or Dispensing Water Valve

1)Close the water supply line shut-off valve.

2)Open the water supply line drain valve.

3)Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF" position.

4)Remove the apron panel. For the inlet water valve, remove the left side panel. For the dispensing water valve, remove the right side panel.

5)Disconnect the wire terminals from the water valve.

6)Loosen the fitting nut on the water valve. Do not lose the washer inside the fitting nut.

7)Remove the water valve bracket (inlet water valve) or water valve (dispensing water valve).

8)Remove the old water valve and install the new water valve. Remove the supply hose from the old water valve and place on the new water valve.

9)Replace the water valve bracket (inlet water valve) or water valve (dispensing water valve) in its correct position.

10)Reconnect the wire terminals.

11)Reconnect the fitting nut on the water valve. Make sure the washer is in place in the fitting nut.

12)Close the water supply line drain valve and open the water supply line shut-off valve.

13)Check for water leaks.

14)Move the power switch to the "ON" position, then replace the panels in their correct positions.

15)Turn on the power supply, then move the control switch to the "ICE" position to start the automatic icemaking process.

K.Removal and Replacement of Drain Valve

1)Close the water supply line shut-off valve.

2)Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF" position.

3)Remove the apron panel, then the right and left side panels. Next, remove the rear panel.

4)Prepare a container to catch water from the reservoir and evaporator, then disconnect the hose from the drain valve and allow all of the water from the reservoir and evaporator to drain into the container.

5)Disconnect the wire terminals from the drain valve.

6)Remove the drain valve bracket.

7)Remove the old drain valve and install the new drain valve.

8)Replace the drain valve bracket in its correct position.

9)Reconnect the wires and hoses.

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Contents DCM-750BAH DCM-750BAH-OS DCM-750BWH DCM-750BWH-OS Hoshizaki AMERICA, INC Contents Page Specifications Icemaker DCM-750BAHDCM-750BAH-OS Water TEMP. FDCM-750BWH Potable Water WATER-COOLED CondenserDCM-750BWH-OS Potable Water Water Cooled CondenserII. General Information Construction DCM-750BWH-OS Ice Making Unit Sequence of Operation Startup Control Board Control Board Layout DCM-750BAH, DCM-750BWH Control BoardDCM-750BAH-OS, DCM-750BWH-OS Features LED LightsControls and Adjustments Portion Control Control Board Check ProcedurePower Supply Ice Making ComponentsDispensing Components DCM-750BAH, DCM-750BWH Float Switch Inlet Water Valve DCM-750BWH-OS Wiring Diagrams Wire Color CodeDCM-750BAH-OS, DCM-750BWH-OS Sequence of Electrical Circuit Ice Making DCM-750BWH-OSIce Purge Cycle Orange WHITE/BLACK Pink WHITE/BROWN RED WHITE/BLUE Violet Hour Drain Cycle / Drain Switch Shutdown Low Water Safety High Pressure Switch Sequence of Electrical Circuit Dispensing Continuous DispensePortion Dispense Performance Data 192Approximate IV. Service Diagnosis Diagnostic Procedure Ice Production Check Diagnostic Charts No Ice ProductionProblem Possible Cause Remedy Problem Possible Cause Remedy Low Ice Production Other Dispensing Opti Serve OS Sensors 5a. Ice Dispensing Continuous Mode 5b. Ice Dispensing Portion Mode5c. Water Dispensing Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery BrazingEvacuation and Recharge R-404A Removal and Replacement of Compressor Removal and Replacement of Expansion Valve Removal and Replacement of Evaporator Assembly Components Removal and Replacement of Extruding Head Upper Bearing Wear CheckRemoval and Replacement of Auger Removal and Replacement of EvaporatorPage 5b. Lower Housing Removal and Replacement of Gear Motor Page Removal and Replacement of Water-Cooled Condenser Page Adjustment of Water Regulating Valve Water-Cooled Model Only Removal and Replacement of Fan MotorRemoval and Replacement of Inlet or Dispensing Water Valve Removal and Replacement of Drain ValveRemoval and Replacement of Dispensing System Dispensing Auger and AgitatorDispensing or Agitating Motor Page VI. Cleaning and Maintenance Cleaning and Sanitizing InstructionsCleaning Solution Water SystemSanitizing Solution Dispensing ComponentsBin Control Bracket Snap Pin Maintenance Frequency Area TaskPreparing the Icemaker for Long Storage