CHECK AND TEST 1

NOTE 

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 page 366 

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 on page 366 

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


PROCEDURE 2


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 drying- filter. 

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 drying- filter and compressor processing pipe. 

Step 8

Vacuum and recharge.

Please get more details of vacuuming and gas- charging requirements on page 313 

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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