Hoshizaki DCM-750BWH-OS Upper Bearing Wear Check, Removal and Replacement of Extruding Head

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1. Upper Bearing Wear Check

To ensure that the bearing inside the extruding head does not exceed the wear tolerance of .02", follow the instructions below. See Fig. 2.

1) 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.

2) Remove the front cover of the storage bin. Remove spout B,

.02" Round Stock

then remove spout A and the cutter. See Fig. 1.

3) Grasp the top of the auger and move

or Pin Gauge

Auger

the auger towards you and then try to

Extruding

insert a .02" round stock or pin gauge in

Head

between the back side of the auger shaft

 

and the bearing surface. Check several

 

locations around the auger shaft. If the

 

gauge goes between the shaft and the

 

bearing at any point or if the bearing is

 

scratched or cracked, both the top bearing

 

in the extruding head and the lower

 

bearing in the housing should be replaced.

Fig. 2

Instructions for removing the extruding

head and housing are located later in this

 

procedure.

 

Note: Replacing the bearing requires a bearing press adaptor. If one is not available, replace the whole extruding head and housing.

4)Replace the cutter, spout A, spout B, and the front cover of the storage bin in their correct positions.

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

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

2.Removal and Replacement of Extruding Head

1)Move the control switch to the "DRAIN" position and drain all of the water from the evaporator.

2)After the water has stopped draining, 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 front cover of the storage bin. Remove spout B, then remove spout A and the cutter. See Fig. 1.

4)Remove the apron panel, then remove the left side panel.

5)Remove the extruding head heater, then remove the allen head cap screws and lift off the extruding head.

6)Place the new extruding head in place and tighten down the allen head cap screws.

7)Replace the extruding head heater and cutter in their correct positions.

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Contents DCM-750BAH DCM-750BAH-OS DCM-750BWH DCM-750BWH-OS Hoshizaki AMERICA, INC Contents Page DCM-750BAH Specifications IcemakerWater TEMP. F DCM-750BAH-OSPotable Water WATER-COOLED Condenser DCM-750BWHPotable Water Water Cooled Condenser DCM-750BWH-OSII. General Information Construction DCM-750BWH-OS Ice Making Unit Sequence of Operation Startup Control Board Control Board Control Board Layout DCM-750BAH, DCM-750BWHDCM-750BAH-OS, DCM-750BWH-OS LED Lights FeaturesIce Making Components Controls and Adjustments Portion ControlControl Board Check Procedure Power SupplyDispensing Components DCM-750BAH, DCM-750BWH Float Switch Inlet Water Valve DCM-750BWH-OS Wire Color Code Wiring DiagramsDCM-750BAH-OS, DCM-750BWH-OS DCM-750BWH-OS Sequence of Electrical Circuit Ice MakingIce Purge Cycle Orange WHITE/BLACK Pink WHITE/BROWN RED WHITE/BLUE Violet Hour Drain Cycle / Drain Switch Shutdown Low Water Safety High Pressure Switch Continuous Dispense Sequence of Electrical Circuit DispensingPortion Dispense 192 Performance DataApproximate IV. Service Diagnosis Diagnostic Procedure Ice Production Check No Ice Production Diagnostic ChartsProblem 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 Brazing Removal and Replacement of ComponentsService for Refrigerant Lines Refrigerant RecoveryEvacuation and Recharge R-404A Removal and Replacement of Compressor Removal and Replacement of Expansion Valve Removal and Replacement of Evaporator Assembly Components Upper Bearing Wear Check Removal and Replacement of Extruding HeadRemoval and Replacement of Evaporator Removal and Replacement of AugerPage 5b. Lower Housing Removal and Replacement of Gear Motor Page Removal and Replacement of Water-Cooled Condenser Page Removal and Replacement of Fan Motor Adjustment of Water Regulating Valve Water-Cooled Model OnlyRemoval and Replacement of Drain Valve Removal and Replacement of Inlet or Dispensing Water ValveRemoval and Replacement of Dispensing System Dispensing Auger and AgitatorDispensing or Agitating Motor Page Cleaning and Sanitizing Instructions VI. Cleaning and MaintenanceWater System Cleaning SolutionDispensing Components Sanitizing SolutionBin Control Bracket Snap Pin Frequency Area Task MaintenancePreparing the Icemaker for Long Storage