LG GR-051CN Servicing Precautions

SAFETY PRECAUTIONS
Please read the following before servicing your refrigerator.
1. Check if electric leakage occurs in the set.
2. When servicing current applying parts, unplug prior to
servicing.
3. If testing with power on, wear rubber gloves to prevent
electric shock.
4. Be sure to check regular current, voltage, and capacity.
5. Don't touch metal products in a cold freezer
compartment with wet hands. It may cause frostbite or
other injury.
6. Prevent water flowing to electric elements in mechanical
parts.
7. When tilting 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 to
prevent injury by sharp fins of the evaporator.
9. Do not open the sealed refrigeration system. It could
cause injury or pollute the air. Leave this job to an
autherized servicer with the appropriate refrigerant
recovery equipment.
SERVICING PRECAUTIONS
AIR RECHARGING IN COMPRESSOR
Test the refrigeration system by connecting it electrically
before begee beginning refilling operation. This is
necessary to ascertain the function of the motor-
compressor and identify defects immediately. If defects
have been found, empty the old system of R134a residue
by breaking off the end of the extension piece at its narrow
point. (Figure 1)
Use the appropriate refrigerant recovery equipment.
Replace the filter and any damaged components. Unsolder
and pull off the piece remaining inside the service tube and
then attach an extension 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 60 minutes. (Figure 4)
POINT TO BE CHARGE TUBE FEMALE
BROKEN EXTENSION HANSEN
MALE
HANSEN
SERVICE TUBE SOLDERING
EXTENSION POINT
Figure 1 Figure 2
PRESSURE
GAUGE
Figure 3 Figure 4
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