Hoshizaki DCM-750BWH-OS, DCM-750BAH Adjustment of Water Regulating Valve Water-Cooled Model Only

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

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

H. Adjustment of Water Regulating Valve - Water-Cooled Model Only

The water regulating valve (also called "water regulator") is factory-adjusted. No adjustment is required under normal use. Adjust the water regulator, if necessary, using the following procedures.

1)Prepare a thermometer to check the condenser drain temperature. Attach a pressure gauge to the high-side line of the system.

2)Five minutes after a freeze cycle starts, confirm that the thermometer reads 104°F to 115°F (40°C to 46°C). If it does not, rotate the adjustment screw by using a flat blade screwdriver until the temperature is in the proper range. See Fig. 4. Next, check that the reference pressure is in the range indicated in the Head Pressure table in the Performance Data section. If it is not in the proper range, verify the refrigerant charge.

Top View

Fig. 4

Adjustment Screw

CW – Higher CCW – Lower

3)Check that the condenser drain temperature is stable.

I.Removal and Replacement of Fan Motor

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 apron panel.

3)Disconnect the wire connectors from the fan motor leads.

4)Remove the fan motor bracket.

5)Remove the fan blade and install it onto the new fan motor.

6)Install the new fan motor onto the fan motor bracket.

7)Replace the fan motor bracket in its correct position and reconnect the wire connectors.

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

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

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