Service manual

Replacing the Compressor

Compressor Replacement Procedure

137

Removing of compressor

• Remove two discharge pipes, suction pipe, upper oil return piping, oil tank piping, and case

bypass piping.

(Same case for pulling out from the front side)

NOTE:

Take great care when removing the pipes with a brazing torch – if oil is remaining in the pipe,

a flame may be emitted at the moment when the flux melts.

• Loosen the flare nut at the bottom side of the compressor to remove the pipe.

• Remove the metal fixing the oil tank.

• Remove the oil tank. (Two brazing positions)

• Remove the screws fixing the bottom plate for the compressor.

• Pull out the compressor with the bottom plate for the compressor.

NOTE:

Weight of the compressor is approx. 100kg.

• Remove the nuts fixing the compressor.

• Remove the compressor.

Installation

• Install the compressor in the reverse order of removing the compressor.

NOTE:

After installation, fully open the valve at bottom side of the compressor, using a hexagonal

wrench.

Vacuuming

• Connect the vacuum pump to the check joint of the discharge and suction pipes, and

operate the vacuum pump.

• Perform vacuuming until the vacuum low-pressure gauge indicates 0.750 (mmHg).

Charging of refrigerant

• Add refrigerant of the same volume as the recovered refrigerant into the check joint of the

liquid pipe.