CHECK AND TEST 1



Step 1

Discharge refrigerant: use pliers to cut off charging tube.

Step 2

Discharge all refrigerant toward the exhaust vent.

Step 3

Melt brazing material with flame and pull processing tube out using a pair of pliers.

Step 4

Re-braze a copper tube onto processing tube of  compressor.
To get more details on brazing requirements, please go to

NOTE


Step 5

Install quick connector onto re-brazed pipe.

Step 6

Inject nitrogen of 1.57Mpa through quick connector into pipe.

Step 7

Please refer to drawing below to perform leakage test on brazed joints in compressor
niche.

DIAGNOSIS 1


PROCEDURE 1


Step 1

Clean paint off near leaking point.

Step 2

Cut off the pipe with leaking point.

Step 3

Use a bigger copper tube to connect 2 ends
of brazed joint.

Step 4

Weld the 2 ends.
Please get more details of brazing requirements go to

NOTE


Step 5

Inject nitrogen of 1.57Mpa through quick connector into pipe.

Step 6

Perform leakage test on brazed joints again
in compressor niche to make sure re-brazing
was successful.

CHECK AND TEST 2

Step 1

Weld a piezometer onto processing tube of
compressor.

Step 2

Charge nitrogen of 1.57Mpa through quick
connector into pipe.

Step 3

Do leakage test on brazing points and
piezometer.

DIAGNOSIS 2


DIAGNOSIS 1


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 dryingfilter.

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 dryingfilter and compressor
processing pipe.

Step 8

Vacuum and recharge.
Please get more details of vacuuming and gascharging requirements go to

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 3


DIAGNOSIS 3


Attention


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