CHECK AND TEST 1
Step 1
Discharge refrigerant.
Cut off the charging tube with a pair of pliers.
Step 2
Discharge all refrigerant toward the exhaust vent.
Step 3
Melt brazing material with flame and use a pair of pliers to pull charging tube out.
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
Inject nitrogen (1.57Mpa)
through quick connector
into pipe for at least
3 min to blow left remaining refrigerant.
Step 6
Cut off exhaust pipe and suction pipe.
Step 7
Power up the compressor and feel the exhaust pressure of the exhaust pipe with a paper.
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 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
Re-braze a copper tube onto processing tube of compressor.
To get more details on
brazing requirements,
please 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
vacuuming and gas-
charging requirements,
on Annex B1
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
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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