Panasonic OCU-CR200VF5 Service Manual page 16

Compressor Replacement Procedure
8. Replacing compressor
Remove the cushion rubbers (rubber mounts) from the compressor you just removed in step "6.
Compressor removal", attach them to the new compressor, and then place the new compressor
in its original position.
Note: Place the new compressor without causing stress to the refrigerant piping in the
refrigerating unit.
9. Pipe brazing operation
1) While heating the brazing position of each pipe (4 places), insert the tip of each pipe into the
brazing part of the new compressor.
2) Maintain a flow of oxygen-free nitrogen through the pipe at a very low pressure during
brazing. Nitrogen displaces the air and prevents the formation of copper oxides in the pipe.
3) Confirm that the pipe is inserted to the specified length.
Note: When inserting the 2
screw. (Bending prevention)
4) Apply phosphor copper brazing to the welded parts. Strictly comply with the nitrogen
substitution process.
5) Fasten the pipe securing screw removed in step "3)".
Note: When the screw-fastening is omitted, excessive vibration may cause a failure
by piping breakage. For that reason, be sure to fasten the screw.
nd
stage discharge pipe, remove the piping securing
Completed condition after brazing
16
Condition with an attached
cushion rubber (rubber mount)