Compressor - Hoshizaki IM-30CWNE Service Manual

5) Disconnect the vacuum pump, and attach a refrigerant charging cylinder to
accurately weigh in the liquid charge. Remember to purge any air from the charging
hose. See the nameplate for the required refrigerant charge.
6) Open the high-side valve on the gauge manifold and the valve on the charging
cylinder.
Note: Always charge in the liquid stage, as many refrigerants are blends and vapour
charging will affect the blend consistency (e.g. R404A).
7) When no more refrigerant is drawn in, turn on the icemaker. When the required
amount of refrigerant has been charged, close the valve on the charging cylinder
and turn off the icemaker.
8) Close the high-side valve on the gauge manifold.
9) Disconnect the charging hoses from the access valves. Always cap the access
valves to prevent a refrigerant leak.
10) Always thoroughly leak test all joints and valve caps.
11) Avoid charging large quantities of liquid into the low side in case of damage to the

compressor.

2. COMPRESSOR
1) Unplug the icemaker or disconnect the power source.
2) Remove the front and rear panels.
3) Recover the refrigerant and store it in a proper container, if required by an applicable
law (See "1. [b] REFRIGERANT RECOVERY").
4) Remove the terminal cover on the compressor, and disconnect solderless terminals.
5) Disconnect the discharge and suction pipes using brazing equipment.
6) Remove the hold-down bolts, washers and rubber grommets.
7) Slide and remove the compressor. Unpack the new compressor package.
8) Attach the rubber grommets of the previous compressor.
9) Clean the suction and discharge pipes with an abrasive cloth/paper.
10) Place the compressor in position, and secure it using the bolts and washers.
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