Removal And Replacement Of Water-Regulating Valve; Water Cooled Model Only - Hoshizaki KM-500MAF Service Manual

8. 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) Close the Water Supply Line Shut-off Valve.
3) Remove the panels.
4) Recover the refrigerant and store it in an approved container.
5) Disconnect the Capillary Tube at the Condenser outlet 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) Evacuate the system, and charge it with refrigerant. See the Nameplate for the
required refrigerant charge.
12) Connect the Flare-connections.
13) Open the Water Supply Line Shut-off Valve.
14) Check for water leaks.
15) Replace the panels in their correct positions.
16) Turn on the power supply.
IMPORTANT
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