Adjustment; Expansion Valve - Hoshizaki IM-21 Service Manual

VIII. ADJUSTMENT

1. EXPANSION VALVE

The Expansion Valve is factory-adjusted. Do not adjust it except at replacement or service.
Adjust the valve setting, if necessary, as follows:
1) Remove the Cap Nut.
2) Rotate the Adjust Screw.
3) Watch holes of ice cubes produced. Standard setting is that Evaporator inlet side and
outlet side cubes have almost the same diameters. To make the inlet side larger, rotate
90 - 180° clockwise. Smaller, counterclockwise. Do not rotate more than 180° at a time.
Over adjustment of the valve may result in liquid refrigerant return causing freezing
to the suction line and severe damage to the Compressor.
Bottom View
CAUTION
Adjust Screw
Cap Nut
Bulb
Fig. 23
97
Capillary Tube
Solder Connection