CHECK AND TEST 1

Step 1

Discharge refrigerant.
Cut off the charging tube with pliers. 


Step 2

Discharge all refrigerant toward the exhaust vent. 

Step 3

Melt brazing material with flame and pull
processing tube out using a pair of pliers.

Step 4

Re-braze a copper tube onto processing tube of compressor.                                                                                                                 To get more details on brazing requirements, please go to Annex B1

 

Note


Step 5

Install quick connector onto rebrazed pipe.

Step 6

 Cut off suction pipe and exhaust pipe.

Step 7

Power on the compressor and test
exhaust pressure coming from exhaust pipe with a piece of paper.

Step 8

Test the suction pressure
of suction pipe with a
piece of paper.

DIAGNOSIS 1


PROCEDURE 1

Step 1

Unscrew terminal cover.

Step 2
Remove terminal cover

Step 3

Disconnect all terminals.

Step 4

Unscrew earthing wire.

Step 5

Unscrew nut of compressor.

Step 6

Replace with new
compressor. 

Step 7

Braze the joints of suction
and exhaust pipes.

PROCEDURE 2


Step 1

Re-braze a copper tube onto processing tube of compressor.
To get more details on brazing requirements,
please go to Annex B1

Step 2

Install quick connector
onto re-brazed pipe.

Step 3

Clean paint off of brazed joint of drying filter.

Step 4

Cut off the brazed point of drying filter.

Step 5

Cut off capillary and
remove the cut end by
shaking.


Step 6

 Braze on a new drying-filter.

Step 7

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

Step 8

Add quick connector onto processing pipe of
drying-filter.


Step 9

Conduct a leakage test on brazed joints
of drying-filter and compressor processing
pipe.

Step 10

Vacuum and recharge.

Click below link to get more details for vacuuming and gas- charging requirements, on Annex B2

Step 11

Block processing pipe twice by locking pliers. 

Step 12

Leave locked pliers attached to second
block and shake to cut off the remaining pipe.

Step 13

Braze the ends and remove the pliers.

DIAGNOSIS