CHECK AND TEST 1
Step 1
Put your hand on
compressor and feel the
vibration.
DIAGNOSIS 1
PROCEDURE 1
Step 1
Discharge refrigerant.
Cut charging tube off with pliers.
Step 2
Discharge all refrigerant
toward the exhaust vent.
Step 3
Cut off suction pipe and
exhaust pipe.
Step 4
Unscrew terminal cover.
Step 5
Remove terminal cover.
Step 6
Remove protector and starter.
Step 7
Unscrew earthing wire.
Step 8
Unscrew nut on compressor.
Step 9
Install a new compressor and tighten the nuts onto compressor.
Step 10
Braze the joints of suction and exhaust pipes.
Step 11
Re-braze a copper tube onto compressor processing tube.
Step 12
Install quick connector onto re-brazed pipe.
Step 13
Melt brazing material with flame and pull out processing tube with pliers.
Step 14
Re-braze a copper tube onto compressor processing tube.
Step 15
Clean paint off brazed joint of drying-filter.
Step 16
Cut off drying-filter.
Step 17
Cut off capillary and remove the cut end by shaking.
Step 18
Weld on a new drying-filter.
Step 19
Inject nitrogen (1.57Mpa) through quick connector into pipe for at least 3 min to blow remaining refrigerant away.
Step 20
Add quick connector onto processing pipe of drying-filter.
Step 21
Perform leakage test on brazed joints of drying- filter and compressor processing pipe.
Step 22
Vacuum and recharge.
Please get more details of vacuuming and gas- charging requirements on page 313
Step 23
Block processing pipe twice with locking pliers.
Step 24
Leave locking pliers on the second block and cut off the rest of the pipe by shaking.
Step 25
Braze 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.
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