LG GR-131SPF user manual download

Languages: English
Pages:14
You can view the full version and download it in PDF format.
Page 1 of 14
SAFETY
PRECAUTIONS
1. Check if an electric leakage
occurs
in
the
set.
2. When servicing
current
applying
parts, unplug
prior to
servicing.
3. In case of testing with power injecting,
wear rubber
gloves to prevent electric shock.
4. If you use any appliances,
check regular current,
voltage
and capacity.
5. Don't touch metal products
in cold freezer room with wet
hand.
It may cause frostbite.
6. Prevent water flowing
to electric elements
in mechanical
parts.
7. When sloping the set, remove any materials
on the set,
especially
thin plate type(ex,:
glass plates or books.).
8. When servicing
evaporator
part, wear cotton gloves
without fail. It is to prevent wound by sharp fin of
evaporator.
9. Leave a breakage freezing
cycle to a heavy service
center. The gas in cycle inside may soil ambient air.
SERVICING
PRECAUTIONS
AIR
RECHARGING
IN COMPRESSOR
Test the refrigeration
system by connecting
it electrically
before refilling operation.
This is necessary
to ascertain
the
function
of the motor-compressor
and identify the defects
immediately.
If the defects
have been found, empty the old
system of eventual R-12 residue by breaking
off the end of
the extension
piece at its narrow point. (Figure 1)
Replace the filter and any damaged
components.
Unsolder
and pull off the piece remaining
inside the service
tube and
then attach an extension completely
with male Hansen and
last, solder it to the same tube again. (Figure 2)
It is necessary
to execute
the
soldering
operation
with
valve open so that the fumes caused
by oil residue
can
come out freely without
blowholes
between two tubes
during heating the point to be soldered.
The extension
fitted with the male Hansen is connected
to
the female fitting
of the vacuum
pump tube. (Figure 3)
Air evacuating
from the system begins as soon as the
pump starts. The refrigeration
system must be kept under
vacuum
until the reading
on the low-pressure
gauge
indicates
vacuum (0 absolute,
-1 atm., -760 mm Hg) in any
case it is advisable
to keep the pump running for about
30 minutes. (Figure 4)
POINT TO BE
BROKEN
SERVICE
TUBE
EXTENSION
Figure 1
CHARGE
TUBE
FEMALE
EXTENSION
HANSEN
MALE
HANSEN
SOLDERING
POINT
Figure 2
PRESSURE
GAUGE
Figure 3
Figure 4
-3-
Sample
This manual is suitable for devices