LG GR 051SF User Manual REFRIGERATOR Manuals And Guides L0212259

LG Refrigerator Compact Manual L0212259 LG Refrigerator Compact Owner's Manual, LG Refrigerator Compact installation guides

User Manual: LG GR-051SF GR-051SF LG REFRIGERATOR - Manuals and Guides View the owners manual for your LG REFRIGERATOR #GR051SF. Home:Kitchen Appliance Parts:LG Parts:LG REFRIGERATOR Manual

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SAFETY

PRECAUTIONS

Please read the followings before servicing your refrigerator.
1. Check if an electric leakage occurs in the set.

6. Prevent water flowing to electric elements in mechanical
parts.

2. When servicing current applying parts, unplug prior to
servicing.

7. When sloping the set, remove any materials on the set,
especially thin plate type(ex,: glass plates or books.).

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.

8. When servicing evaporator part, wear cotton gloves
without fail. it is to prevent wound by sharp fin of
evaporator.

5. Don't touch metal products in cold freezer room with wet
hand. It may cause frostbite.

9. Leave a breakage freezing cycle to a heavy service
center. The gas in cycle inside may soil ambient air.

SERVICING
AIR RECHARGING

PRECAUTIONS

IN COMPRESSOR

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, -t atm., -760 mm Hg) in any
case it is advisable to keep the pump running for about
30 minutes. (Figure 4)

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)

POINT TO BEE]
BROKEN

CHARGE TUBEE] FEMALEr
EXTENSION
HANSEN

MALEE]
HANSEN
SERVICE TUBEE]
EXTENSION

Figure I

PRE
GAUGE

SOLDERINGE]
POINT

Figure 2

Figure 3

-3-

Figure 4

In case that a considerable leakage occurs and to stop the
vacuum pump will be necessary and 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 the special
leak-finder. When the defective soldering point is visible,
re-do 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
block them, the pressure must be rebalanced when
vacuum is in the system in soldering. As soon as the
vacuum operation is over, add the quantity in grams of R12 to the refrigeration system. Remember that every
system has an exact quantity of R-12 with a tolerance of
-+5grams than can be added. (Figure 5)

Before performing this operation (if the vacuum pump and
refilling cylinder are connected), make sure that the valve
placed between the vacuum pump and refilling tube are
closed to keep the Freon for adding to the system. (Figure 6)

FILLING ORB

VALVE TO BE []

CHARGE TUBE

REFILLING
,PENED WHEN []

TO THE•
REFRIGERATIOND
SYSTEM

TO THE []
CHARGE[]
CYLINDER

VACUUM[
PUMP

VALVE TO BED
CLOSED[]
AFTER VACUUM

Figure 6

TO THED
R-12 CYLINDER

In addition, check the graduated scale on the cylinder for
the quantity of R-12 to be added, for example, if we have
750 grams of Freon in the cylinder and must add 165
grams to the group, this amount will be reached when R-12
has dropped to 585 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-12 flow into the system, open the valve placed
at the base of the cylinder and connected to the filling 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 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 making the pressure go down again.
Regulate the valve again, maintaining the same manner
until reaching the quantity of R-12 established for the
system being charged. When the system is running, the
suction pressure must be stabilized from 0.30 to 0.6
atmosphere.

TO THED
REFRIGERATIOND
SYSTEM

Figure 5

-4-

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 R134a 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)

POINT TO BED
BROKEN

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, -t atm., -760 mm Hg) in any
case it is advisable to keep the pump running for about
60 minutes. (Figure 4)

CHARGE TUBED FEMALEF
EXTENSION
HANSEN

MALED
HANSEN

;

_
SERVICE TUBED
EXTENSION

Figure I

VACUUMD
PUMP
PRE
GAUGE

SOLDERINGD
POINT

Figure 2

Figure 3

-5-

Figure 4

In case that a considerable leakage occurs and to stop the
vacuum pump will be necessary and 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 the special
leak-finder. When the defective soldering point is visible,
re-do 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
block them, the pressure must be rebalanced when
vacuum is in the system in soldering. As soon as the
vacuum operation is over, add the quantity in grams of
Rt34a to the refrigeration system. Remember that every
system has an exact quantity of Rt34a with a tolerance of
-+5grams than can be added. (Figure 5)

FILLING ORD

VALVE TO BE []

CHARGE TUBE

REFILLING
OPENED WHEN D

TO THED
REFRIGERATIOND
SYSTEM

TO THE D
CHARGE[]
CYLINDER

TO THE
VACUUME
PUMP

VALVE TO BE[]
CLOSED[]
AFTER VACUUM

Figure 6

TO THE[]

Ri34a

In addition, check the graduated scale on the cylinder for
the quantity of R134a to be added, for example, if we have
750 grams of Freon in the cylinder and must add 165
grams to the group, this amount will be reached when
R134a has dropped to 585 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.

CYLINDER

To make R134a flow into the system, open the valve
placed at the base of the cylinder and connected to the
filling 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 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 making the pressure go down again.
Regulate the valve again, maintaining the same manner
until reaching the quantity of R134a established for the
system being charged. When the system is running, the
suction pressure must be stabilized from 0.10 to 0.4
atmosphere.

TOT RAT,ON[]
SYSTEM

Figure 5

-6-

1. SPECIFICATIONS
ITEMS

SPECIFICATIONS

DOOR TYPE

1DOOR

NET CAPACITY
CONDENSER

TYPE

ITEMS
INSULATION

SPECIFICATIONS
DOOR

POLYURETHANE

CABINET

POLYURETHANE

EVAPORATOR

WALL CONDENSER

DIMENSION
(FLUSH BACK)
DEFROSTING
TEMPERATURE

SYSTEM
CONTROL

MANUAL
KNOB DIAL

ROLL BOND TYPE
443(W)X501(H)X450(D)mm

NET WEIGHT

15 Kg

SHELF

1 PIECE

REFRIGERANT

LUBRICANT

R-12(40g)

R-134a(43g)

VS Series

HTS-150

FREOL a 22G

COMPRESSOR

(200cc)

NS Series

HTS-150

FREOL a 22G

COMPRESSOR

(180cc)

2. PARTS IDENTIFICATION

THERMOSTAT
Regulates the operation of
the motor and controls the
temperature inside the
refrigerator.

EVAPORATOR
The heart of the refrigerator,
It evaporates the refrigerant
fluid and thereby absorbs
heat from the surrounding.
Made of pure aluminum.

Keeps butter.
ICE CUBE TRAY
Ice cube is easy to remove
from the tray

DOOR SEAL

PLASTIC SHELF
It has full width and can
slide out and catches the
water that drips off the
evaporator when
defrosting.

Keeps the refrigerator
virtually airtight all along
the edge, but is
nevertheless easy to open.

BOTTLE SUPPORTER
Keeps bottles, cans or jars.

-7-

3. DISASSEMBLY
A. DOOR

C. COMPRESSOR

AND PTC

1. Loosen 1 screw holding an cover hinge and 3 screws
holding an upper hinge to separate the door body.
(Figure 7)

1. Remove Protector Cover, Power Cord and Lead Wire
first. (Figure 11)
2. Separate OLR
3. Separate PTC.
4. Remove the Compressor Base by loosening 4 bolts
fixed to base plate of the set. (Figure 12)

Figure 7

Figure 11

Figure 12

B. THERMOSTAT
1. Pull Knob Dial. (Figure 8)
5. Remove the Compressor by loosening 2 earth screws
next to Compressor.
NOTE : Replace the Compressor, after peeling off
painted part of earth terminal.
• Compressor inhales the gas evaporated from Evaporator
and condenses this gas and then delivers to Condenser.
• PTC is abbreviation of Positive Temperature Coefficient
and is attached to the Compressor, and operates motor.
• OLP prevents Motor coil from being started inside
Compressor.
• Do not turn the Adjust Screw of OLP in any way for
nomal operation of OLR

2. Loosen 1 screw holding the case to remove the Thermo
cover. (Figure 9)

Figure 8

Figure 9

3. Pull out thermostat in the thermostat cover, and
disconnecting 2 or 3 lead wires. (Figure 10)
NOTE : Replace a proper specification

new thermostat.

Figure 10

-8-

2000.03.13

100/70

CIRCUIT DIAGRAM
THERMOSTAT

_, i
_l

GN(GI_.)

YL :YELLOW
BK:BLACK
BL:BLUE
GN:GREEN
PK:PINK

4N-I

BL_ _

__C_IOMPRESSOR

P.T.CSTARTER
THE PLUG TYPE ON CIRCUIT DIAGRAM
TO CHANGE IN DIFFRENT LOCALTIES.

IS SUBJECT
3854,JD1009E

5. TROUBLESHOOTING
DEFECT

CAUSE

EFFECT

REMEDY

GROUP PARTIALLY
OR COMPLETELY
OUT OF
REFRIGERANT
CHARGE

Evaporatordosenot frost even
though motor-compressorruns
continually.

An empty refrigerantsystem
indicatesa leakage of R_2.This loss
is generallyto be lookedfor at the
soldering pointsconnectingthe
various componentsor in an
eventual hotein the evaporator
made by the user.

Leakagemust be eliminated by
resolderingthe defective point or
substitutingthe damaged
evaporator.

EXCESSIVELY
FULL

This defect is indicatedby the
presenceof wateroutside
refrigeratornear the motor caused
byformationsof ice on the return
tube.

If in the refrigerantsystema quantity
of R_2is introducedwhich is greater
than that indicated,the excess gas
dose not terminateits expansionin
the evaporatorbut proceedsinto the
returntube.

The system mustbe emptiedand
subsequentlyrefilled introducing
the
correctquantity of R_.

HUMIDITY
SYSTEM

This defect is indicatedby the partial
frosting of the evaporatorand by
continual defrosting cyctes
determined by the interruptionof the
flow ofgas on the evaporator.The
motorcompressorkeeps running.

The refrigerantsystemis humid
when there is a small percentageof
water present which, not completely
retainedby the dehydratorfilter,
enters into circulation withthe Freon
and freezesat the capillaryexit in
the evaporator.

The system mustbe emptiedand
then refilledafter eliminatingthe
humidity.

PRESENCE OF AIR
IN THE SYSTEM

Poor performanceof the refrigerant
systemwhich is indicated:onthe
evaporatorwith a slight frost which
dose not freeze and an excessive
overheatingof the condenserand
motor-compressor.

There is air in a refrigeratingsystem
when duringthe filling phase
vacuum is not effectedor it is not
adequately done.

Groupmust be drained and
subsequentlyrefilled after carefully
creatingvacuum.

BLOCKED
CAPILLARY

Becauseof the lackof circulation
Freonin the system,there is no
frosting of the evaporator,while a
slight overheatingof the first spiral
of the condenser is noted.

Eventuatimpuritiescontained in the
Freonor inthe componentsof the
refrigerationsystembefore
assembly and not retained bythe
filter can obstructthe capillary.

Torestore the systemit must be
emptied,substitutethe capillaryor
the evaporatorentirely in case the
capillaryis coaxial with respectto
the returntube, then refill it.

MOTORCOMPRESSOR
SHOR_CIRCUITED
OR BLOCKED

The systemdose not work andthe
"clixson" intervenes interrupting
delivery to the motor-compressor.

In case of short circuit, the
breakdownis dueto the electric
winding: if blocked,there is a
mechanicalfailure in the motor-

The motor-compressormust be
replacedand then proceed with
refilling.

IN THE

compressor.
MOTORCOMPRESSOR
DOSE NOT
COMPRESS

Nofrost forms on the evaporator
even if the motor-compressoris
apparentlyrunning regulary.

In this case there is a mechanical
failure in the diaphramvalves which:
remainingcontinuallyopen, do not
permitthe pistonto suckand
compressorthe which
consequente]ydose not circulate in
the system.

The motor-comprossormust be
replacedand then proceed with
refilling.

NOISY MOTORCOMPRESSOR

in case ofmechanicalfailure inthe
motor-compressorthere in an
excessive noise when the system is
functioning: incase a suspension
spring is unhooked,bangingwill be
heardand therewillbe especially
strong vibrationswhen the system
starts up and stops.

The causeof the excessive noise is
normallyto be sought for in a
mechanicalbreak down, and only
rarely in the unhooking of oneof the
suspensionsprings.

The motor-comprossormust be
substitutedand then proceedwith
the refilling.

-10-

NO COOLING

The Compressor
doesn't run.

Check if the current
flows at the contacting
point of the Thermostat.

Poor contacting point

Replace the
Thermostat.

on
the main
circuit.
Check
the components

Check if the current
flows at the contacting
point of the starting
system.

Poor contacting point
and broken

-11 -

Replace the device.

COMPRESSOR

AND ANOTHER

ELECTRIC

COMPONENTS

Separate the PTC-STARTER from
the Compressor and measure the
voltage between M and C of the
Compressor.

YES

OLP works within 30 sec.
in forcible OLP operation

YES
NO

Measure minimum starting voltage
after checking steps 1-3 above.
And measure the pressure balance
of the PTC with the interval of
more than 5 min.

-12-

PTC

Poor starting or no
operating of the
Compressor.

First, separate the PTC from
the Compressor and check the
voltage between NO 5 and 6
in the PTC with a multitester
or Wheatstone

Bridge.

Separate the OLP from
the Compressor and
check resistance value
between two terminals of
OLP with Tester.

-13-

6. EXPLODED

VIEW

NOTE : The shape of parts are subject to change in different localities.
-14-

7. EXPLODED

VIEW

NOTE : The shape of parts are subject to change in different localities.
-15-

WALMART(WAL)

Electrical
ITEM

BUYER MODEL NAME
RATED INPUT(W)

Specification
GR-051SF
GR_051SF
70+15%

DEFROST INPUT(W)
ENERGY CONSUMPTION(kwh/yr)

288

AMPERE(Amp)

0.84

RATING(V/Hz)

115/60

REFRIGERANT

R134a

CHARGE(Oz)

1.41

COMPRESSOR

NS24LBCM

OLP

4TM232NFB

PTC

P6R8MD

CAPACITOR-R
CAPACITOR-S

10pF/250VAC

HOME

DEPOT(HDP)

Electrical
ITEM

Specification
GR-051SF

GR-131SF

GR=151SF

GR_051SF

GR_131SPF

GR-151SPF

70+15%

ENERGY CONSUMPTION(kwh/yr)

288

330

350

AMPERE(Amp)

0.84

1.0

0.7

RATING(V/Hz)

115/60

REFRIGERANT

R134a

1.41

2.12

3.35

COMPRESSOR

NS24LBCM

NS24LBCG

NS30LACM

OLP

4TM232NFB

4TM265MFB

PTC

P6R8MD

P6R8MC

P6R8MD

BUYER MODEL NAME
RATED INPUT(W)
DEFROST INPUT(W)

CHARGE(Oz)

CAPACITOR-R
CAPACITOR-S

101JF/250VAC

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LG GR 051SF User Manual REFRIGERATOR Manuals And Guides L0212259

LG Refrigerator Compact Manual L0212259 LG Refrigerator Compact Owner's Manual, LG Refrigerator Compact installation guides

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