CHECK AND TEST 1
Follow the procedure 1 on next page to open inverter box.
Step 1
Discharge refrigerant: Use a pair of pliers to cut off the charging tube.
DIAGNOSIS 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
DIAGNOSIS 2
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 and suction pipe.
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 exhausting pipes.
Step 7
Re-braze a copper tube onto processing tube of
compressor. To get more details on brazing requirements, please go to 10.4 Annex B1.
Step 1
Clean paint off of 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
Inject nitrogen (1.57Mpa) through quick connector into pipe for at least 3 min to blow remaining refrigerant away.
Step 7
Do leakage test on brazed joints of drying-filter and processing pipe on compressor.
Step 8
Vacuum and recharge. Please get more details
of vacuuming and gascharging requirements
on 10.5 Annex B2.
Step 9
Block processing pipe twice by locking pliers.
Step 10
Left locking pliers on the second blocking and
cut off the rest pipe by shaking.
Step 11
Braze the ends and remove the pliers away.
