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3. Removal and Replacement of Compressor
IMPORTANT
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.
Note: When replacing a compressor with a defective winding, be sure to
install the new start capacitor and start relay supplied with the replacement
compressor. Due to the ability of the POE oil in the compressor to absorb moisture
quickly, the compressor must not be opened more than 15 minutes for
replacement or service. Do not mix lubricants of different compressors even if both
are charged with R-404A, except when they use the same lubricant.
1) Turn off the power supply and unplug the dispenser.
2) Remove the panels.
3) Remove the terminal cover on the compressor, and disconnect the compressor wiring.
4) Recover the refrigerant and store it in an approved container.
5) Remove the discharge and suction pipes using brazing equipment.
WARNING
When repairing a refrigerant system, be careful not to let the burner flame
contact the lead wires or insulation.
6) Remove the hold-down bolts, washers and rubber grommets.
7) Slide and remove the compressor. Unpack the new compressor package. Install the
new compressor.
8) Attach the rubber grommets of the prior compressor.
9) Sandpaper the suction, discharge and process pipes.
10) Place the compressor in position, and secure it using the bolts and washers.
11) Remove plugs from the suction, discharge and process pipes.