CHECK AND TEST 1
DIAGNOSIS 1
PROCEDURE 1
Step 1
Pull upwards to remove inverter box.
Step 2
Disconnect terminals.
Step 3
Disconnect power cord.
Step 4
Disconnect earthing wires.
PROCEDURE 2
CHECK AND TEST 2
Step 1
Watch the warning light flashing on inverter box.
Note
one flash -
light is on for 0.5 second,
and then off for 0.5 second.
DIAGNOSIS 2
PROCEDURE 3
Step 1
Discharge refrigerant. Cut off the charging tube with pliers.
Step 2
Release all refrigerant toward the exhaust vent.
Step 3
Cut off exhaust pipe to check whether oil is being ejected from compressor.
Step 4
Unscrew nut of compressor.
Step 5
Install a new compressor and tighten nuts onto compressor.
Step 6
Braze the joints of suction and exhaust pipes.
Step 7
Re-braze a copper tube onto compressor processing tube.
PROCEDURE 4
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
Braze on a new drying-filter.
Step 5
Add quick connector onto processing pipe of drying-filter.
Step 6
Inject nitrogen (1.57Mpa)
through quick connector
into pipe for at least
3 min to blowing remaining
refrigerant.
Step 7
Perform leakage test on brazed joints of drying- filter and compressor processing pipe.
Step 8
Vacuum and recharge.
Click below link to
get more details for
vacuuming and gas-
charging requirements,
go to Annex B2
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
Braze the ends and remove the pliers.
DIAGNOSIS 3
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