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 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


Note


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

CHECK AND TEST 2


Step 1

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

DIAGNOSIS 2


PROCEDURE 2


Step 1

Remove the freezer
drawer.

Step 2

Remove the middle
glass shelf located
between upper and
bottom freezer drawer
compartments.

Step 3

Unscrew air duct
a. Check the freezer air
duct to find the three
screw covers.

b. Remove the screw
covers (total of three)
on the air duct with
slotted screw driver.

c. Unscrew all three
screws with Crosshead
screw driver.

Step 4

Dismantle the air duct.
a. Catch the bottom of
air duct.

b. Pull air duct out from
below from the bottom
of air duct.

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

d. Disconnect the
terminal for fan motor.

e. Disconnect the
terminal of temp.
sensor.

f. Take the air duct
out of the freezer
compartment.

DIAGNOSIS 3


PROCEDURE 3


Note


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

CHECK AND TEST 3


Step 1

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

DIAGNOSIS 4


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.

DIAGNOSIS 5


CHECK AND TEST 5

Step 1

Check to find possible
leakage point.

DIAGNOSIS 6


PROCEDURE 4


Note


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

CHECK AND TEST 6

Step 1

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

DIAGNOSIS 7


PROCEDURE 5


Tip 1

When re-installing the air
duct, move the wires out
of the way so that they
won’t be crushed by air
duct.

Tip 2
After pushing air duct
into position, it should
make a click sound. If no
click is heard, do it again.

PROCEDURE 6


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.
Please get more details
of 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

Braze the ends and
remove the pliers.

DIAGNOSIS 9


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