CHECK AND TEST 1

Note


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 out processing tube 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 Annex B1. 

Note

Step 4

Install quick connector onto rebrazed pipe. 

Step 5

Inject nitrogen of 1.57Mpa through quick connector into pipe.

Step 7

Test brazed joints in compressor niche for leaks with soapy water




DIAGNOSIS 1


PROCEDURE 1


Step 1

Clean paint off of brazed joint

Step 2

Cut off brazed joint with leakage.

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 Annex B1

Note


CHECK AND TEST 2

Step 1

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

Step 2

Check gas leakage with soapy water again
at all brazed joints in compressor niche.

DIAGNOSIS 2


PROCEDURE 2


Step 1

Remove all drawers.

Step 2

Remove all glass shelves.

Step 3

Remove the upper air duct. a. Prize up and remove the decorative cover.


 b. Prize up the buckle on the air duct with slotted screwdriver, then remove the upper air duct.   

Step 4

Dismantle the air duct. a. Unscrew the screws (total four) with Cross-head screwdriver.


b. Catch the lower air duct and pull down the air duct.  



c. Pay attention to the connectors when pulling out the air duct.  


d. Disconnect the terminal for fan motor. Disconnect the terminal for defrost sensor.


e. Move the air duct out of the fridge compartment.  

CHECK AND TEST3

Step 1

Inject 1.57Mpa nitrogen through quick connector into pipe and check gas leakage behind freezer air duct

DIAGNOSIS 3


CHECK AND TEST 3


Step 1

Clean paint off brazed joint. 

Step 2

Cut off brazed joint with leakage.

Step 3

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

Step 4

Braze on a new drying-filter.  Braze the 2 ends. Please get more details of brazing requirements on page 422

Note


CHECK AND TEST 4

Inject 1.57Mpa nitrogen through quick connector into pipe and check gas leakage behind freezer air duct.   

DIAGNOSIS 4

Add quick connector onto processing pipe of drying-filter. 

CHECK AND TEST 5


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 to make sure all connection points are in good condition.

DIAGNOSIS 5


PROCEDURE 4


Tip 1

Make sure the sealing sponges are in good condition.

Tip 2

After pushing air duct back into position, you should hear a clicking sound. If there is no click, please repeat again.  

Tip 3

Check to see if there is a wide gap between air duct and cabinet. If there is, reinstall air duct.

PROCEDURE 5

Step 1

Clean paint off of brazed joint of drying filter

Step 2

Clean paint off of brazed joint of drying filter.

Step 3

Cut off capillary and remove the cut end by shaking

Step 4

raze on a new dryingfilter.

Step 5

nject 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 leakage test on brazed joints of drying-filter and processing pipe on compressor

Step 8

Vacuum and recharge.

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

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CHECK AND TEST 6


DIAGNOSIS 6

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