CHECK AND TEST 1


When listening, the compressor is clearly louder than normal. 

If you hold compressor firmly with your hand, the noise can be reduced.

DIAGNOSIS 1

PROCEDURE 1

Step 1

Discharge refrigerant. Cut charging tube off with pliers.


Step 2

Discharge all refrigerant toward the exhaust vent.

Step 3

Cut off suction pipe and exhaust pipe.

Step 4

Unscrew terminal cover.

Step 5

Remove terminal cover.

Step 6

Remove protector and starter.

Step 7

Unscrew earthing wire.

Step 8

Unscrew nut on compressor.

Step 9

Install a new compressor and tighten the nuts onto compressor.

Step 10

Braze the joints of suction and exhaust pipes.

Step 11

Re-braze a copper tube onto compressor processing tube.

Step 12

Install quick connector onto re-brazed pipe.

Step 13

Melt brazing material with flame and pull out processing tube with pliers.

Step 14

Re-braze a copper tube onto compressor processing tube.
PROCEDURE 2

Step 1

Clean paint off brazed joint of drying-filter.

Step 2

Cut off drying-filter.

Step 3

Cut off capillary and remove the cut end by shaking.

Step 4

Braze on a new drying-filter.

Step 5

Inject nitrogen (1.57Mpa) through quick connector into pipe for at least 3 min to blow remaining refrigerant away.

Step 6

Add quick connector onto processing pipe of drying-filter.

Step 7

Perform leakage test on brazed joints of dryingfilter and compressor processing pipe.

Step 8

Vacuum and recharge. Please get more details of vacuuming and gascharging requirements on 10.5 Annex B2.

Step 9

Block processing pipe twice with locking pliers.

Step 10

Leave locking pliers on the second block and cut off the rest of the pipe by shaking.

Step 11

Braze the ends and remove the pliers.
DIAGNOSIS 2

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