Hoshizaki KM-320MAH, KM-320MWH service manual

N. 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 procedure.

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

2)Rotate the adjustment screw by using a flat blade screwdriver, so that the pressure gauge shows 270 PSIG or the thermometer reads 104 to 115°F, 5 minutes after a freeze cycle or icemaking process starts. When the pressure exceeds 270 PSIG, or the condenser drain temperature exceeds 115°F, rotate the adjustment screw counterclockwise. See Fig. 2.

3)Check that the pressure or the condenser drain temperature holds a stable setting.

Adjustment Screw Adjustment Screw

CW – Higher

CCW – Lower

Top View

Fig. 2

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