Step 1

Discharge refrigerant:
1) Use pliers to cut off charging tube.
2) Discharge all refrigerant toward the exhaust vent.

Step 2

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

Step 3

Re-braze a copper tube onto processing tube of compressor.
To get more details on brazing requirements, please go to the 10.4 Annex B1

Note

Step 4

Install quick connector onto rebrazed pipe.

Step 5

Inject nitrogen of 1.57Mpa through quick connector into pipe.

Step 6

Test brazed joints in compressor niche for leaks with soapy water.

DIAGNOSIS 1

Step 1

Clean paint off of brazed joint.

Step 2

Cut off brazed joint with leaking.

Step 3

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

Step 4

Braze the 2 ends.
Please get more details
of brazing requirements on 10.4 Annex B1

Inject 1.57Mpa nitrogen through quick connector into pipe and apply
soapy water to test for leaks again.

DIAGNOSIS 2

CHECK AND TEST 3

Step 1

Braze a piezometer onto processing tube of compressor.

Step 2

Charge nitrogen of 1.57Mpa through quick connector into pipe.

Step  3

Perform leakage test on brazing points and piezometer.

DIAGNOSIS 3

PROCEDURE 2

Step 1

Clean paint off of brazed joint of drying filter.

Step 2

Cut off the brazed joint of drying filter.

Step 3

Cut off capillary and remove the cut end by shaking.

Step 4

Braze 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

Do leaking 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

Leave locked pliers attached to second block and shake to cut off the remaining pipe.

Step 11

Braze the ends and remove the pliers.

DIAGNOSIS 4