Removal And Replacement Of Hot Gas Valve And Liquid Line Valve - Hoshizaki KMS-1230MLH Service Manual

7) Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.
1. Do not heat the wall of the machine. Place a steel barrier for protection.
. Always protect the valve body by using a damp cloth to prevent the valve
from overheating. Do not braze with the valve body exceeding 50°F
(11°C).
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
9) Evacuate the system and charge it with refrigerant. See the nameplate on the
condensing unit for the required refrigerant charge.
10) Attach the expansion valve bulb to the suction line in the same location as the previous
bulb. The bulb should be at the 1 o'clock position on the tube. Be sure to secure the
bulb with the clamp and holder and to insulate it.
11) Place the new expansion valve cover in position.
1) Replace the panels in their correct positions.
13) Turn on the power supply.

3. Removal and Replacement of Hot Gas Valve and Liquid Line Valve

1. The icemaker unit has 1 hot gas valve and 1 liquid line valve. The hot gas
valve has a strainer prior to the valve body. It is advisable to change the
strainer and check valves when replacing the hot gas valve.
. Always use a copper tube of the same diameter and length when replacing
the hot gas and liquid lines; otherwise performance may be reduced.
3. 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. Install the new drier with the arrow on the drier in the
direction of the refrigerant flow.
1) Turn off the power supply.
) Remove the panels.
3) Recover the refrigerant and store it in an approved container.
4) Remove the screw and the solenoid.
5) Disconnect the valve body. Remove the strainer and check valve (if applicable).
6) Place the new valve, strainer and check valve in position.
7) Remove the drier, then place the new drier in position. Install the new drier with the
arrow on the drier in the direction of the refrigerant flow.
WARNING
CAUTION
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