Hoshizaki KM-260BWH, Service Manual

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7) Install the new condenser, then attach the fan motor bracket.
8) Remove the drier, then place the new drier in position.
9) Braze all fi ttings while purging with nitrogen gas fl owing at a pressure of 3 to 4 PSIG.
10) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (140 PSIG). DO NOT use R-404A as a mixture with
pressurized air for leak testing.
11) Evacuate the system, and charge it with refrigerant. See the nameplate for the
required refrigerant charge.
12) Replace the panels in their correct positions.
13) Plug in the icemaker or connect the power source.
8. WATER-COOLED CONDENSER
CAUTION
1. Always install a new drier every time the sealed refrigeration system is
opened.
2. 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
fl ow.
3. When brazing, protect the drier by using a wet cloth to prevent the drier
from overheating. Do not allow the drier to exceed 250°F (121°C).
1) Unplug the icemaker or disconnect the power source.
2) Remove the panels.
3) Close the condenser water supply line shut-off valve. If connected to a closed loop
water supply, also close the condenser return outlet shut-off valve.
4) Open the condenser water supply line drain valve. If connected to a closed loop
water supply, also open the condenser return outlet drain valve.
5) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.