CHECK AND TEST 1

Step 2

Check reworking record
to see if thermostat has
been replaced.

Step 2

Check to see if the
thermostat gear is 5 to 7.

Step 3

Check to see if
compressor running time
is greater than 85%.
Note: This picture just
show the logic.

DIAGNOSIS 1


PROCEDURE 1


Step 1

Unscrew bottom
attachment.

Step 2

Unscrew top
attachment.

Step 3

Remove the plastic
cover.

Step 4
Unscrew central
attachment on left and
right side.

Step 5

Unscrew the plastic
guider.

Step 6

Hold cabinet and pull
appliance out.


Note:
Reverse procedures
above to install the
appliance.

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.
To get more details for
brazing requirements,
please go to Annex A3

Note


Step 5

Install quick connector
onto re-brazed pipe.

Step 6

Inject nitrogen of
1.57Mpa through quick
connector into pipe.

Step 7

Test brazed joints in
compressor niche for
leaks with soapy water.

DIAGNOSIS 2


Note


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.
Follow below link to
find out right brazing
materials,on page Annex B1

CHECK AND TEST 3

Step 1

Inject nitrogen at
1.57Mpa through quick
connector into pipe
and use soapy water
to perform leakage test
again.

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

Do leakage test on
brazing points and
piezometer.

DIAGNOSIS 4


CHECK AND TEST 5

Step 1

Give the system
1.57Mpa Nitrogen, and
then observe if there is
rust and/or spotted holes
on pipes of compressor
niche and evaporator.

Step 2

Apply soapy water to
rusty area to test for
leaks.

DIAGNOSIS 5


PROCEDURE 3


Step 1

Cut off brazed joint with
leakage.

Step 2

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

Step 3

Braze the 2 ends.
Follow below link to
find out right brazing
materials,on Annex B1

CHECK AND TEST 5

Step 1

Inject nitrogen at
1.57Mpa through quick
connector into pipe
and use soapy water
to perform leakage test
again.

DIAGNOSIS 5


PROCEDURE 3


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 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 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 Annex B2

Step 9

Block processing pipe
twice by locking pliers.

Step 10

Leave locking pliers on
the second block and
shake to cut off the rest
of the pipe.

Step 11

Braze the ends and
remove the pliers.

DIAGNOSIS 6


GO BACK TO COMPONENT LIST