CHECK AND TEST 1

NOTE

Step 1

Cut off capillary to discharge refrigerant.

Step 2

Discharge all refrigerant toward the exhaust vent.

 

Step 3

Cut off exhaust pipe and suction pipe. 

Step 4

Power up the compressor and feel the exhaust pressure from the exhaust pipe with a piece of paper. 

DIAGNOSIS 1

CHECK AND TEST 2

Step 1

 Braze.

Step 2

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

Step 3

Re-braze a copper tube onto processing tube of compressor. Please find more details of brazing requirements go to ANNEX B1

NOTE

Step 4

Clean paint off of brazed joint of drying filter.

Step 5

Cut off drying-filter.

Step 6

Cut off capillary and shake to remove the cut end.

Step 7

Braze.

Step 8

Add quick connector onto processing pipe of drying-filter.

Step 9

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

Step 10

Cut off brazed joints, one by one, to find blockage point.

Step 11

First, cut off end closed to exhaust end (A in right picture).

Step 12

Then, cut off the end closed to suction end.

DIAGNOSIS 2

PROCEDURE 1

Step 1

Use a larger copper tube to connect 2 ends of brazed joint.

Step 2

Braze. 

Step 3

Perform a leakage test on all re-brazed joints of drying-filter and compressor processing pipe.

Step 4

Vacuum and recharge. Please get more details of vacuuming and gas- charging requirements, go to Annex-B2

Step 5

Block processing pipe twice by locking pliers.

Step 6

Leave locking pliers on the second block and shake to cut off the rest of the pipe.

Step 7

Braze the ends and remove the pliers.

DIAGNOSIS 3

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