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

Use a pliers to cut the capillary off. 

Step 7

Inject nitrogen (1.57Mpa) through quick connector into pipe. 

Step 8

Check to see if gas is blowing out of capillary. 

Step 9

Cut off exhaust pipe to check whether oil is being ejected from compressor. 

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

Install a new compressor on top. 

Step 7

Braze joints of suction and exhaust 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

Add quick connector onto processing pipe of drying-filter. 

Step 6

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

Step 7

Vacuum and recharge.

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

Step 8

Block processing pipe twice with locking pliers.

Step 9 

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

Step 10

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 at MAX. 

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