PROCEDURE 1


Step 1

Unscrew bottom
attachment.

Step 2

Unscrew top
attachment.

Step 3

Remove the plastic
cover.

Step 4
Unscrew central
attachment on left and
right side.

Step 5

Unscrew the plastic
guider.

Step 6

Unscrew the plastic
guider.

CHECK AND TEST 1

Step 1

Plug in, the compressor starts, but the protection is activated immediately, and it cannot work normally. Put hand onto compressor, no shaking can be felt.

Step 2

Measure the AC voltage
of the compressor with a
multimeter. If voltage of
three terminals is almost
the same (100V~200V), it
means power is transferred
to compressor. The power
supply of compressor is
good.

NOTE

Step 3

Wait a few minutes,
repeatedly power on and
off several times, the
compressor starts but
activates protection.

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

DIAGNOSIS 2

PROCEDURE 1

Step 1

Unscrew terminal cover.

Step 2

Remove terminal cover.

Step 3

Move out protector and starter. 

Step 4

 Unscrew earthing wire.

Step 5

Unscrew nut of compressor.

Step 6

Put on a new compressor and fix nuts onto compressor.

Step 7

Braze the joints of suction and exhasuting pipes.

PROCEDURE 2

Step 1

Clean away paint on 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

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

Click below link to get more details for brazing requirements, go to Annex B1

Step 6

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

Step 7

Add quick connector onto processing pipe of drying-filter.

Step 8

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

Step 9

Vacuum and recharge. 

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

Step 10

Block processing pipe twice with locking pliers.

Step 11

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

Step 12

Braze the ends and remove the pliers.

DIAGNOSIS 3

GO BACK TO COMPONENT LIST