Removal And Replacement Of Water Regulating Valve - Hoshizaki DCM-500BAF Service Manual

6. REMOVAL AND REPLACEMENT OF WATER REGULATING VALVE -

WATER-COOLED MODEL ONLY
Always install a new Drier every time the sealed refrigeration system is
opened. Do not replace the Drier until after all other repair or replacement
has been made.
1) Turn off the power supply.
2) Remove the panels.
3) Close the Water Supply Line Shut-off Valve.
4) Recover the refrigerant and store it in an approved container.
5) Disconnect the Capillary Tube using brazing equipment.
6) Disconnect the Flare-connections of the valve.
7) Remove the screws and the valve from the Bracket.
8) Install the new valve, and braze the Capillary Tube.
9) Install the New Drier
10) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
11) Connect the Flare-connections.
12) Open the Water Supply Line Shut-off Valve, and turn on the power supply.
13) Check for leaks.
14) Evacuate the system, and charge it with refrigerant. See the Nameplate for the re-
quired refrigerant charge.
15) See "IV. 1. ADJUSTMENT OF WATER REGULATING VALVE." If necessary, adjust
the valve.
16) Replace the panels in their correct positions.
IMPORTANT
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