PROCEDURE 1


Step 1

Unscrew bottom
attachment.

Step 2

Unscrew top
attachment.

Step 3

Unscrew the plastic
guider.

Step 4

Hold cabinet and pull
appliance out.

CHECK AND TEST 1

Step 1
Check to see if
compressor running time
is 100%.

DIAGNOSIS 1


Note


CHECK AND TEST 2



Step 1

Discharge refrigerant.
Cut off the charging
tube with pliers.

Step 2

Discharge all refrigerant
toward the exhaust vent.

Step 3

Melt brazing material with flame and pull out processing tube using a pair of pliers.

Step 4

Re-braze a copper tube onto compressor processing tube. 

Click below link to get more details for brazing requirements, go to Annex B1

NOTE

Step 5

Install quick connector
onto re-brazed pipe.

Step 6

Inject nitrogen gas with 1.57Mpa pressure through quick connector into pipe.

Step 7

Please follow drawing below to perform a leakage test for brazed joints in the compressor niche.

DIAGNOSIS 2


PROCEDURE 2

Step 1

Clean paint from brazed
joint.

Step 2

Cut off brazed joint with leakage.

Step 3

Use a larger copper tube to connect 2 ends of brazed joint.

Step 4
Braze the 2 ends.

Step 5

Inject nitrogen at 1.57Mpa
through quick connector
into pipe.

Step 6

Use soapy water to
perform leakage test
again.

DIAGNOSIS 3


CHECK AND TEST 3


Step 1

Braze a piezometer
onto processing tube of
compressor.

Step 2

Charge nitrogen at
1.57Mpa through quick
connector into pipe.

Step 3

Do leakage test on
brazing points and
piezometer.

DIAGNOSIS 5

CHECK AND TEST 5

Step 1

Try to find possible
leakage point.

DIAGNOSIS 6

PROCEDURE 3


Step 1

Clean paint off brazed
joint of drying-filter.

Step 2

Cut off brazed joint
with leakage.

Step 3

Use a larger copper
tube to connect 2
ends of brazed joint.

Step 4

Braze the 2 ends.

Step 5

Inject nitrogen at
1.57Mpa through quick
connector into pipe.

Step 6

Use soapy water to
perform leakage test
again.

DIAGNOSIS 7


CHECK AND TEST 3

Step 1

Braze 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 4


CHECK AND TEST 4 


Step 1

Try to find possible
leakage point.

DIAGNOSIS 5



PROCEDURE 3


Step 1

Clean paint off brazed
joint of drying-filter.

Step 2

Cut off brazed joint
with leakage.

Step 3

Use a larger copper
tube to connect 2
ends of brazed joint.

Step 4

Braze the 2 ends.

Step 5

Inject nitrogen at
1.57Mpa through quick
connector into pipe.

Step 6

Use soapy water to
perform leakage test
again.

DIAGNOSIS 6

CHECK AND TEST 5


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

Braze 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

Do leakage test on
brazed joints of dryingfilter
and processing pipe
on compressor.

Step 8

Vacuum and recharge.
Click below link to
get more details for
vacuuming and gascharging
requirements,
go to page 10.4 Annex B1

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

Braze the ends and
remove the pliers.

DIAGNOSIS 7


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