CHECK AND TEST 1

Step 1

Power on the appliance, measure voltage
between phases of compressor with a
multimeter.

Step 2

Take note of measured value.

Note
Voltage between any
two phases should be
the same (100V~200V).

Step 3

Put hand onto compressor for a few minutes to feel if compressor is jammed or not.

DIAGNOSIS 1


CHECK AND TEST 2

Step 1

Cut off capillary to discharge refrigerant. 

Step 2

Cut off exhaust pipe and suction pipe 

Step 3

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

DIAGNOSIS 2


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

Install a new compressor on top.

Step 7

Braze the joints of suction and exhasuting pipes.

Step 8

Re-braze a copper tube onto processing tube of compressor.

To get more details on brazing requirements, please go to Annex B1.


Note


Step 9

Install quick connector onto re-brazed pipe. 

Step 10

Clean paint off of brazed joint of drying filter.

Step 11

Cut off the brazed joint of drying filter.

Step 12

Cut off capillary and remove the cut end by
shaking.

Step 13

Braze on a new drying-filter. 

Step 14

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

Step 15

Add quick connector onto processing pipe of drying-filter. 

Step 16

Test for leaks on brazed joints of drying-filter
and processing pipe on compressor.

Step 17

Vacuum and recharge.

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

Step 18

Block processing pipe twice with locking pliers.

Step 19
Leave locked pliers attached to second
block and shake to cut off the remaining pipe.

Step 20

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

Note


CHECK AND TEST 3


DIAGNOSIS 3


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