Panasonic OCU-CR1000VF8A, Service Manual

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Caution For safety purposes, always wear protective gear during operations.
2. Compressor removal
1) After completing the preparation for compressor replacement, cut the compressor piping at
five places (1st stage suction, 1st stage discharge, 2nd stage suction, 2nd stage discharge,
and oil return) by using a pipe cutter or cable cutter.
Notes: 1. The cutting position should be on the compressor side of the welded part as
follows. Cutting the refrigeration unit side would disable recovery.
2. Use sufficient caution not to deform the welded part of the pipe during cutting.
2) Remove the securing bolt, spring washer, flat washer, and protection rubber washer, etc. in
three places (two places in the front and one in the back) of the compressor to be replaced.
3) Remove the compressor from the refrigeration unit.
4) Remove the compressor pipe left on the refrigeration unit side by heating the cut end.
Notes: 1. In order to avoid radiation of the heating flame, make sure to cover the wiring, heat
insulation material, and MOV1 (oil control electronic expansion valve) with a wet
waste cloth.
2. During heating, supply nitrogen gas by using the service piping (SPK-TU125).
Nitrogen displaces the air and prevents the formation of copper oxides in the
heating position.
5) Remove the secured part of the piping. (Prevention of bending deformation)
Compressor Replacement Procedure
1st stage discharge
pipe cutting position
Oil return pipe
cutting position
2nd stage discharge
pipe cutting position
2nd stage suction
pipe cutting position
1st stage suction
pipe cutting position
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