LG GR-B197GVQ Service Manual page 98

3-5. Standard
Regulations For Heavy Repair
TROUBLE DIAGNOSIS
-98-
Items Precautions
4) Refrigerant Charging
Charge refrigerant
while
operating
a
compressor
as
shown above.
5)
Pinch
a
charging pipe
with
a
pinch-off plier
after
completion
of
charging.
6) Braze the end of
a
pinched charging pipe with copper brazer and take
a
gas
leakage test
on
the welded
parts.
6. Gas-leakage test
*
Test for leaks
on
the welded
or
suspicious
area
with
an
electronic
leakage tester.
7.
Pipe
arrangement
Check each
pipe
is
placed
in its
original
in each
cycle place
before
closing
a cover
back-M/C
after
completion
of work.
Particularly
control the size of Joint Drain
Pipe
Compressor
Condenser
Drier
Evaporator
Charging
cannister
Bushing
1)
Observe the
safety precautions
for gas
handling.
2)
Use JIG
(or wet towel)
in order to
prevent
electric wires from
burning during welding. (In
order
to
prevent
insulation
break and
accident.)
3)
The inner
case
will melt and the insulation will burn.
4) The copper piping will oxidize.
5)
Do
not
allow aluminum and copper
pipes to
touch.
(In
order
to
prevent
corrosion.)
6)
Observe that the inserted
length
of
a
capillary
tube into
a
drier should be 12
mm.
7) Make
sure
that the inner diameter should not be distorted while cutting
a
capillary tube.
8)
Be
sure
that
a
suction
pipe
and
a
filling
tube should
not
be substituted each other
during welding. (High efficiency
pump.)
12
mm
+3
-0
Drier
Molecular
Pipe
Molecular
Sieves
+3
-0