CHECK AND TEST 1


Step 1

Discharge refrigerant:
1) Use pliers to cut off
charging tube.

Step 2

2) Discharge all
refrigerant toward the exhaust vent.

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 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 leaking.

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 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 freezer drawers.

Step 2

Remove all freezer shelves.

Step 3

Remove screw covers (total of two) on upper
freezer air duct with Slotted Screw Driver.

Step 4

Unscrew screws (total of two) on upper freezer
air duct with Cross-head screw driver.

Step 5

Catch bottom of air duct upper freezer air duct
and pull all buckles (total of 8) down.

Step 6

Take out upper freezer air duct by tilting to one
side.
Pay attention to the connectors when pulling
out the air duct.

Step 7

Disconnect the terminal for fan motor and move upper freezer air duct away.

Step 8

Remove the screw cover on bottom freezer air
duct with Slotted Screw Driver.

Step 9

Unscrew the screw on bottom freezer air duct
with Cross-head screw driver.

Step 10

Catch bottom of air duct bottom freezer air duct and pull all buckles (total of 10) down.

Step 11

Take out the lower air duct, tilting to one side.

Step 12

When restoring the upper air duct, fasten the
wires to avoid crushing them with air duct.

CHECK AND TEST 3


DIAGNOSIS 3


CHECK AND TEST 4


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 4


PROCEDURE 3


Tip 1

When restoring the upper freezer air duct,
fasten the wires to avoid crushing them with air
duct.

Tip 2

All buckles should be pushed into proper final
position. If not, please repeat installation.

PROCEDURE 4


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

Weld 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

Do leaking test on brazed joints of
drying-filter and processing pipe on
compressor.

Step 8

Vacuum and recharge.
Click below link to get more details for
vacuuming and gascharging requirements,
on 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

Weld the ends and remove the pliers.

CHECK AND TEST 5


DIAGNOSIS 5


GO BACK TO COMPONENT LIST