LG LRTG2011W, LRTG1811W Owner’s Manual

SERVICING PRECAUTIONS

AIR RECHARGING IN COMPRESSOR
Test the refrigeration system connecting itelectrically before

refilling operation. It is necessary to ascertain the function
of the motor-compressor and identify the defects
immediately. If defects have been found, empty the old
system of possible R-134a 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 complete extension with male Hansen and

at last, solder it to the same tube again. (Figure 2)

POINT TO BE BROKEN

CHARGETUBE FEMALE

EXTENSION HANSEN

. MALERANSEN

SERVICE TUBE EXTENSION

Figure I

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 the heating the of 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)

SOLDERING POINT

Figure 2

vacuum operation is over, add the quantity ingrams of
R-134a to the refrigeration system. Remember that every
system has an exact quantity of R-134a that can be added
with a tolerance of :!:5 grams. (Figure 4)

TO THE R-134a CYLINDER

_,, _ TO THE REFRIGERATION

Before performing this operation (if the vacuum pump and
refilling cylinder are connected), make sure that the valve
placed between the vacuum pump and the refilling tube is
closed in order to keep the Freon for addition to the system.
(Figure 5)

FILLING OR VALVE TO BE OPENED

CHARGE TUBE WHEN REFILLING

SYSTEM

I Figure 4

__ESSURE

GAUGE

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 3)

If considerable leakage occurs, it will be necessary to stop
the vacuum pump and to add a small quantity of Freon to
the system. If vacuum should not be obtained (pressure
gauge can't fall to 1 atmosphere), start the refrigeration
unit and find the leakage with special leak-fieder. When the
defective soldering point is visible, repair it after opening
the extension tube valve and reestablishing the normal
outside pressure inside the group.

Because the melted alloy is sucked into the tubes and
blocks them, the pressure must be rebalanced when

vacuum is in the system when soldering. As soon as the

TO THE REFRIGERATION TO THE CHARGE
SYSTEM CYLINDER

VALVE TO BE CLOSED
AFTER VACUUM

TO THE
VACUUM _ Figure 5

PUMP

addition, check the graduated scale on the cylinder for

the quantity of R-134a to be added, for example, ifwe have
750 grams of Freon in the cylinder and must add 140
grams to the group, this amount will be reached when
R-134a has dropped to 610 grams, remembering that the

indicator shows a lower limit of meniscus. Do this after
choosing the scale corresponding to the gas pressure

different scales reported as the same gas pressure
indicated by the pressure gauge on the top of the column.

To make R-134a flow into the system, open the valve
placed at the base of the cylinder connected to the titling

tube. The amount of Freon cannot be added to the system
all at once because it may cause a blocking of motor-

compressor. Therefore, proceed by adding the original
quantity of about 20-30 grams and close the valve

immediately.

The pressure rises and the motor compressor must start
sucking the gas and lowering the pressure again. Open the
valve again, maintaining the same manner until reaching to
the quantity of R-134a established for the system being

charged. When the system is running, the suction pressure
must be stabilized between 0.30 to 0.6 (0.10 to 0.4)

atmosphere.

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2001.06.01 160/120

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2. PARTS IDENTIFICATION

FREEZER

COMPARTMENT

Freezer Shelf

General Type

Ice Tray

Freezer Temperature

REFRIGERATOR

COMPARTMENT

Temperature

Control Dial

Freezer Door Bin

Door Cooling

On the refrigerator door,
the cold air passageway is

installedto supply
coldair to the doorsideof

the refrigerator

compartment.

Lamp

Shelves

Snack Corner

Crisper

Used to keep fru_s

and vegetables

fresh and crisp.

Base Grille

Push the gdlle toward

the refrigerator

untilit snaps

intoplace.

Can Server

Dairy Corner

-- Adjustable

Door Bin

-- Re_iger_orDoor

Rack

Screw

(Inside)

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3. DISASSEMBLY

3-1 DOOR

• Freezer Door

1. Remove the hinge cover by pulling itupwards.

2. Loosen hexagonal bolts fixing the upper hinge to the
body and lift the freezer door.

HINGE COVER

BOLT

HINGE

Figure 6

3. Pull out the door gasket to remove from the door foam

assembly.

GASKET

3-2 DOOR SWITCH

1. To remove the door switch, pull out it with a slotted type

driver as shown in (figure 9).

2. Disconnect the lead wire from the switch.

LEAD WIRE

DOOR SWITCH

Figure 9

3-3 THERMOSTAT

1. Remove Control Box4_ by loosening2 screws attached to

seiHng of Refngerator compar_nent (Figure 10)

2. Separate the thermostat and dial knob F.

3. Remove the thermostat by disconnecting the lead wire.

Figure 7

• Refrigerator Door

1. Loosen hexagonal bolts attaching the lower hinge to the
body to remove the refrigerator door only.

LOWER HINGE

BOLT

Figure 8

2. Pull out the door gasket to remove from the door foam

assembly.

Figure 10

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3.4 FAN AND FAN MOTOR

1. Remove the freezer shelf. (If your refrigerator have an
Ice Maker, disassemble the ice maker first)

2. Remove the grille by pulling it out and by loosening a
screw.

3. Remove the Fan Motor assembly by loosening 4 screws
and disassemble the shroud.

4. Pull cot the fan end separate the Fan Motor and Bracket.

_"_ FANMOTOR

SHROUD

I
I

FAN

Figure 12

3-5 DEFROST CONTROL ASSEMBLY

Defrost control assembly consists of Defrost Thermostat
and FUSE-M.

Defrost Thermostat functions to defrost automatically and it
is attached to metal side of the Evaporator and senses
Temp.

Fuse-M is a safety device for preventing over-heating of the
Heater when defrosting.

At the temperature of 77_C. it stops the emission of heat
from the Heater.

1. Pull out the grifie assembly.

2. Separate the connector connected with the Defrost
Contrbl assembly and replace the Defrost Control

assembly after cutting the Tie Wrap. (Figure 14)

3-6 REFRIGERATOR ROOM LAMP

REFRIGERATOR ROOM LAMP

Figure 16

1. Unplug the power cord from the outlet,

2. Remove refrigerator shelves.

3. Release the hooks on both ends of the lamp shield and
pull the shield downward to remove it.

4. Turn the lamp counterclockwise.

5. Assemble in reverse order of disassembly Replacement
bulb must be the same specification as original.

(Max 40 W)

3-7 CONTROL BOX-R

1. First, remove all shelves in the refrigerator and Control
Box-R by loosening 2 screws.

COVER LAMP_I@ Figure 17

2. Remove the Control Box-R by pulling it downward.

3. Disconnect the lead wire on the right position and

seperate timer, themostat, Lamp socket, etc.

SHROUD-F

Figure 13

DEF-THERMO

FUSE-M

HOLDER FUSE Figure 14

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