Hoshizaki KM-260BAH - Manual (Page 62)

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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.
6) Open the water regulating valve by using a screwdriver to pry up on the spring
retainer underneath the spring. While holding the valve open, blow out the
condenser using the compressed air or carbon dioxide supply until water stops
coming out.
7) Recover the refrigerant and store it in an approved container.
8) Disconnect the capillary tube at the condenser outlet.
9) Disconnect the fl are-connections of the valve.
10) Remove the screws and the valve from the bracket.
11) Install the new valve.
12) Remove the drier, then place the new drier in position.
13) Braze all fi ttings while purging with nitrogen gas fl owing at a pressure of 3 to 4 PSIG.
14) 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.
15) Evacuate the system, and charge it with refrigerant. See the nameplate for the
required refrigerant charge.
16) Connect the fl are-connections.
17) Close the drain valve(s). Open the condenser water supply line shut-off valve. If
connected to a closed loop water supply, also open the condenser return outlet shut-
off valve.
18) Check for water leaks.
19) Replace the panels in their correct positions.
20) Plug in the icemaker or connect the power source.