Removal And Replacement Of Drier - Hoshizaki KM-251BAH Service Manual

5) Remove the screws securing the compressor base and the condenser. Carefully slide
the refrigeration assembly forward.
6) Remove the terminal cover on the compressor, and disconnect the compressor wiring.
7) Remove the discharge and suction pipes.
8) Remove the hold-down bolts, washers and rubber grommets.
9) Remove the compressor. Unpack the new compressor package.
10) Attach the rubber grommets of the prior compressor.
11) Place the compressor in position, and secure it using the bolts and washers.
12) Remove the drier (located behind the upper, rear panel), then place the new drier in
position.
13) Remove plugs from the suction, discharge and process pipes.
14) Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG.
15) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
16) Evacuate the system, and charge it with refrigerant. See the nameplate for the required
refrigerant charge.
17) Connect the terminals, and replace the terminal cover in its correct position.
18) Replace the removed parts in the reverse order of which they were removed. Replace
the panels in their correct positions.
19) Turn on the power supply.
D. Removal and Replacement of Drier
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) Remove the panels.
3) Recover the refrigerant and store it in an approved container.
4) Remove the drier (located behind the upper, rear panel).
5) Install the new drier with the arrow on the drier in the direction of the refrigerant flow.
Use nitrogen gas at a pressure of 3 to 4 PSIG when brazing the tubings.
6) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
7) Evacuate the system, and charge it with refrigerant. See the nameplate for the required
refrigerant charge.
8) Replace the panels in their correct positions.
9) Turn on the power supply.
IMPORTANT
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