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
Weld 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
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.
