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19) Turn on the power supply.
9. 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 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 the figure below. 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.
3) Check that the condenser drain temperature is stable.
10. FAN MOTOR
1) Turn off the power supply.
2) Remove the panels.
3) Loosen the two screws securing the fan blade cover, then remove it.
4) Disconnect the connector of the fan motor lead.
5) Loosen the far side of the two screws and remove the near side of the two screws
securing the fan motor bracket and slide out towards you. To prevent deformation, do not
hit the fan on the condenser or other parts.
6) Install the new fan motor in the reverse order of the removal procedure.
7) Replace the panels in their correct positions.
8) Turn on the power supply.
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