Hoshizaki KM-150BAF, Service Manual

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6. REMOVAL AND REPLACEMENT OF HOT GAS VALVE
CAUTION
Always use a copper tube of the same diameter and length when replacing
the hot gas lines; otherwise the performance may be reduced.
IMPORTANT
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 and unplug the icemaker.
2) Remove the panels.
3) Recover the refrigerant and store it in an approved container.
4) Remove the screw and the Solenoid.
5) Disconnect the Hot Gas Valve using brazing equipment.
6) Install the new valve.
WARNING
Always protect the valve body by using a damp cloth to prevent the valve
from overheating. Do not braze with the valve body exceeding 250°F.
7) Install the new Drier.
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
9) Evacuate the system, and charge it with refrigerant. See the Nameplate for the
required refrigerant charge.
10) Cut the leads of the Solenoid allowing enough lead length to reconnect using closed
end connectors.
11) Connect the new Solenoid leads.
12) Attach the Solenoid to the valve body, and secure it with a screw.
13) Slide in the refrigeration base and replace the Front Panel in its correct position.
14) Plug in the icemaker, and turn on the power supply.