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
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

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

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

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 the 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 Crosshead 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 TEST 3

Step 1

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

DIAGNOSIS 3


PROCEDURE 3


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

Note


CHECK AND TEST 4

Step 1

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

DIAGNOSIS 4


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 into place, you should
hear clicking sounds at 8 buckle positions. If not, 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

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 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

Braze the ends and remove the pliers.

CHECK AND TEST 5


DIAGNOSIS 6




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