CHECK AND TEST 1

Step 1

Discharge refrigerant: Use a pair of pliers to cut off the charging tube. 

Step 2

Discharge all refrigerant toward the exhaust vent.

Step 3

Melt brazing material with flame and pull out processing tube 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

Step 5

Install quick connector onto processing pipe. 

Step 6

Cut off suction pipe and exhaust pipe. 

Step 7

Power on the compressor and use paper to test exhaust pressure from the exhaust pipe. 

Step 8

Use paper to test suction pressure from the suction pipe. 

DIAGNOSIS 1


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. 

Step 8

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

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

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

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

Step 6

Add quick connector onto processing pipe of drying-filter. 

Step 7

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

Step 8

Vacuum and recharge.

Click below link to get more details for vacuuming and gas- charging requirements, on Annex B1

Step 9

Block processing pipe twice with locking pliers. 

Step 10

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

Step 11

Braze the ends and remove the pliers. 

DIAGNOSIS 2


Performance Testing Procedures and Assessment Criteria for FC2 Series

Test conditions

1 Ambient temperature and humidity are the same as natural conditions.

2 Sensor position close to air outlet.
3 Testing time 45 or 60 minutes.
4 Set thermostat to MAX.