CHECK AND TEST 1
NOTE
Step 1
Discharge refrigerant.
Cut off the charging tube
with pliers.
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 for compressor.
To get more details on brazing requirements, please go to page 366
NOTE
Step 5
Install quick connector onto re-brazed pipe.
Step 6
Cut off suction pipe and exhaust pipe.
Step 7
Power up the compressor and feel the exhaust pressure from the exhaust pipe with a piece of paper.
Step 8
Feel the suction pressure of the suction pipe using a piece of paper.
DIAGNOSIS 1
PROCEDURE 1
Step 1
Unscrew terminal cover.
Step 2
Remove terminal cover
Step 3
Remove protector and
starter.
Step 4
Unscrew earthing wire.
Step 5
Unscrew nut for compressor.
PROCEDURE 2
Step 1
Re-braze a copper tube
onto processing tube for
compressor.
To get more details on brazing requirements, please go to page 366
NOTE
Step 2
Weld the joints of suction and exhaust pipes.
PROCEDURE 3
Step 1
Clean paint off brazed joint of drying-filter
Step 2
Cut off drying-filter.
Step 3
Cut off capillary and
shake to remove the cut
end.
Step 4
Weld on a new drying- filter.
Step 5
Inject nitrogen (1.57Mpa) through quick connector into pipe for at least 3 min to blow remaining refrigerant away.
Step 6
Add quick connector onto processing pipe of drying-filter.
Step 7
Perform leakage test on brazed joints of drying- filter and compressor processing pipe.
Step 8
Vacuum and recharge.Please get more details of vacuuming and gas- charging requirements on page 313
Step 9
Block processing pipe twice with locking pliers.
Step 10
Leave locking pliers on the second block and cut off the rest of the pipe by shaking.
Step 11
Weld the ends and remove the pliers.
CHECK AND TEST 2
DIAGNOSIS 2
Performance Testing Procedures and Assessment Criteria.
1. Sensor position: Freezer: geometric center of freezer compartment.
2. Test time: 30min to 60min.
3. Stop Gear: compressor-stopping gear must be above the gear listed on the table.
4. Temperature drop must be no less than the value on the table.
Attention
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