LG GR 151CN User Manual REFRIGERATOR Manuals And Guides L0212262
LG Refrigerator Compact Manual L0212262 LG Refrigerator Compact Owner's Manual, LG Refrigerator Compact installation guides
User Manual: LG GR-151CN GR-151CN LG REFRIGERATOR - Manuals and Guides View the owners manual for your LG REFRIGERATOR #GR151CN. Home:Kitchen Appliance Parts:LG Parts:LG REFRIGERATOR Manual
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SAFETY PRECAUTIONS
Please read the following before servicing your refrigerator.
1. Check if 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 tilting the set, remove any materials on the set,
especially thin plate type (ex,: glass plates or books.)
3. If testing with power on, wear rubber gloves to prevent
electric shock,
8. When servicing evaporator part, wear cotton gloves to
prevent injury by sharp fins of the evaporator.
4. Be sure to check regular current, voltage, and capacity.
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.
5. Don't touch metal products in a cold freezer
compartment with wet hands. It may cause frostbite or
other injury.
SERVICING
AIR RECHARGING
PRECAUTIONS
IN COMPRESSOR
Test the refrigeration system by connecting it electrically
before beginning the 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)
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)
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)
POINT TO BE
BROKEN
CHARGE TUBE
EXTENSION
FEMALE
HANSEN
MALE
HANSEN
SERVICE TUBE
EXTENSION
Figure
1
PRES;
GAUGE
SOLDERING
POINT
Figure
2
Figure 3
-3-
Figure
4
If case that a considerable leakage occurs, it will be
necessary to stop the vacuum pump and add a small
quantity of Freon to the system, if vacuum should not be
obtained (pressure gauge doesn't fall to 1 atmosphere,)
Start the refrigeration unit and find the leakage with a
special leak4inder. When the defective soldering point is
visible, repair it after opening the extension tube valve and
reestablishing the normal outside pressure inside the
system.
Because the melted solder is sucked into the tubes and
blocks them, the pressure must be rebalanced when
vacuum is in the system for soldering. As soon as the
vacuum operation is over, add the quantity (in grams) of
R134a to the refrigeration system. Remember that every
system has an exact quantity of R134a with a tolerance of
+5 grams than can be added. (Figure 5)
Before
refilling
placed
closed
(Figure
performing this operation (if the vacuum pump and
cylinder are connected), make sure that the valve
between the vacuum pump and refilling tube are
to keep the Freon from adding to the system.
6)
_
FILLING OR
VALVE TO BE
CHARGE TUBE
REFILLING
OPENED WHEN
TO THE
REFRIGERATION
SYSTEM
TO THE
VACUUM
PUMP
TO THE
CHARGE
CYLINDER
VALVE TO BE
CLOSED
AFTER VACUUM
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.
TO THE
R-134a 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 thereafter,
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.
Use ONLY R134a refrigerant.
Do not substitute any other type refrigerant.
Do not mix refrigerants.
TO THE
REFRIGERATION
SYSTEM
-4-
1. SPECIFICATIONS
1-1 GR-151
ITEMS
DOOR TYPE
1 DOOR
NET CAPACITY
4.42ft 3
CONDENSER
SPECIFICATIONS
EVAPORATOR
ROLL BOND TYPE
TYPE
DIMENSION
SYSTEM
LUBRICANT
CONTROL
KNOB DIAL
INSULATION
DOOR
POLYURETHANE
CABINET
POLYURETHANE
19 X 331/2X 215/8 in
66.14 Ib
REFRIGERANT
MANUAL
TEMPERATURE
(W X H X D)
NET WEIGHT
WALL CONDENSER
(FLUSH BACK)
DEFROSTING
ITEMS
SPECIFICATIONS
R-134a (3.35 oz)
NS Series
HTS-150
FREOL c_22G
COMPRESSOR
(180 cc)
(180 cc)
2. PARTS IDENTIFICATION
EVAPORATOR (Inside Door)
- The heart of the refrigerator.
- It evaporates the refrigerant
fluid and thereby absorbs
heat from the interier.
_\\
\\
J
\\
\
ICE CUBETRAY
Ice cubes are easy to
remove from the tray
__THERMOSTAT
Regulates the operation of
the motor and controls the
temperature inside the
refrigerator.
Keeps bottles, cans, or jars.
=RTER
Keeps any kinds of bottles.
DRIP TRAY
Catches the water that
drips off the evaporator
when defrosting.
GASKET
PLASTIC COATED
SHELVES
Have full width and can
slide out.
Tight fitting door seal
keeps all the cooling
power locked inside.
No hooks or latches.
GLASS LID & VEGETABLECONTAINER
BAR
Keeps cans.
NOTE : This is a basic model. The shape of refrigerator is subject to change.
-5-
3. DISASSEMBLY
* Disconnect the power before working on the refrigerator.
A. DOOR
3. Pull off Knob Dial. (Figure 8)
4. Pull out thermostat in the thermostat cover, and
disconnect lead wires. (Figure 10)
NOTE : Replace a proper specification new thermostat.
1. Loosen 3 screws holding an upper hinge to separate the
door body. (Figure 7)
Figure
10
Figure 7
C. COMPRESSOR
B. THERMOSTAT
AND PTC
1. Remove Protector Cover, Power Cord, and Lead Wire
first. (Figure 11)
2. Remove OLR
3. Remove PTC.
1. Seperator feeler of thermostat from evaporator.
2. Loosen I screw holding the case to remove the
Thermostat cover. (Figure 9)
4. Remove the Compressor Base by loosening 4 bolts
fixed to base plate of the set. (Figure 12)
Figure 8
Figure 9
Figure 11
5. Remove the Compressor
next to Compressor.
Figure 12
by loosening 2 earth screws
NOTE : Replace the Compressor, after peeling off
painted part of earth terminal.
• Compressor inhales the gas evaporated from Evaporator,
condenses this gas and then delivers to Condenser.
• PTC is abbreviation of Positive Temperature Coefficient,
is attatched 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
normal operation of OLR
-6-
4. CIRCUIT DIAGRAM
CIRCUIT DIAGRAM
"_'IERMOSTAT
IFJ
BK
BK
GN(GNHL)
c= m
YL :YELLOW
BK:BLACK
BL:BLUE
GN:GREEN
PK:PINK
BL
F_T.CSTARB_R
THE PLUG TYPE ON CIRCUIT DIAGRAM IS SUBJECT
TO CHANGE IN DIFFERENT LOCAL'nES.
B854JD1009E
NOTE: This is a basic circuit diagram. The specifications vary in different localities.
-7-
TROUBLESHOOTING
DEFECT
CAUSE
EFFECT
REMEDY
SYSTEM
PARTIALLY OR
COMPLETELY OUT
OF REFRIGERANT
CHARGE
Evaporatordoesnot frost even
though motor-compressorruns
continually.
An empty refrigerantsystem
indicatesa leakage d R134a.This
lossis generallyto be lookedfor at
the soldering pointsconnectingthe
various componentsor in an
eventualhole in the evaporator
made by the user.
EXCESSIVELY
FULL
This defect is indicatedby the
presence of water outside the
refrigerator near the motor caused
by formationsof iceon the return
tube.
If in the refrigerantsystema quantity The system mustbe emptiedand
of R134a is introducedwhich is
subsequentlyrefilled introducingthe
greaterthan that indicated,the
correctquantity of R134a.
excessgas does not terminateits
expansionin the evaporatorbut
proceedsinto the return tube.
HUMIDITY IN THE
SYSTEM
This defect is indicated by the partial
frostingof the evaporatorand by
continua{defrosting cycles
determined by the interruptionof the
flow of gas on the evaporator.The
motor compressorkeepsrunning.
The refrigerantsystemis humid
The system mustbe emptiedand
when there is a small percentageof then refilled after eliminatingthe
water present, which, not completely humidity.
retainedby the dehydratorfilter,
entersinto circulation with the
PRESENCE OF AIR
IN THE SYSTEM
Poorperformanced the refrigerant
systemwhich is indicated on the
evaporatorwith a slightfrost which
does not freeze and an excessive
overheatingof the condenserand
motor-compressor.
There is air in the refrigerating
systemwhen during thefilling phase
vacuum is not effectedor it is not
adequatelydone.
Groupmust be drained and
subsequentlyrefilled after carefully
creatingvacuum.
BLOCKED
CAPILLARY
Becaused the lackd circulation
Freon®in the system, there is no
frostingof the evaporator,whilea
slight overheatingof the first spiral of
the condenseris noted.
Impuritiescontainedin the Freon@
or in the componentsof the
refrigerationsystem before
assemblyand not retainedby the
filter can obstructthe capillary.
To restore the system it must be
emptied,substitutethe capillaryor
the evaporatorentirely incase the
capillaryis coaxial with respectto
the return tube, then refill it.
MOTORCOMPRESSOR
SHORT-CIRCUITED
OR BLOCKED
The systemdoes not work and the
"OLP" intervenes interrupting
deliveryto the motor-compressor.
In case of short circuit, the
breakdownis due to the electric
winding. If blocked,there is a
mechanicalfailure in the motor-
The motor,compressormust be
replacedand then proceed with
refilling.
Leakagemust be eliminatedby
resolderingthe defective pointor
substitutingthe damaged
evaporator.
Freon®and freezesat the capillary
exit inthe evaporator.
compressor.
MOTORCOMPRESSOR
DOSE NOT
COMPRESS
NOISY MOTORCOMPRESSOR
Nofrost forms on the evaporator,
even if the motor-compressoris
apparentlyrunning regulary,
In this case there is a mechanical
failure in the diaphramvalveswhich
remainingcontinuallyopen, do not
permitthe compressorto operate.
Consequenteiy,Freon®does not
circulatein the system.
The motoFcomprossormust be
replacedand then proceed with
refilling.
In case of mechanicalfailure in the
The causeof the excessivenoise is
motor-compressorthere in an
excessive noise when the system is
functioning. In case a suspension
spring is unhooked,bangingwill be
heard and therewill be especially
strongvibrationswhen the system
starts up and stops.
normallyto be sought for in a
mechanicalbreakdown,and only
rarely in the unhookingof one of the
suspensionsprings.
The motor,compressormust be
replacedand then proceed with the
refilling.
-8-
NO COOLING
The Compressor
doesn't run.
--'_
___
--')'
--'_
.__
Poor running of the
Compressor.
flows at the contacting
point of the Thermostat.
Check if the current
_
flowing of starting
Check
system. the current
_._
flows at the main coil of
Check
if the current
the
Comprossor.
Poor contacting point
Thermostat.
H
Replace the device.
Broken
Shorted or
H
Replace the
Compressor.
Coil shorted
H
_[
Replace the
components.
on
the main
circuit.
Check
the components
____.._ voltage.
Measure the starting
_._
Low voltage
at the contacting point of
the starting system,
Check if the current flows _
Check if the current flows I
Compressor.
to the sub coil of the
Replace the
_
_[
Poor contacting point
and broken
.I
Increase the voltage.
Replace the device.
_[
]
.I Replace the
Compressor.
Shorted
sthecHTheco
r enta
o'the
Hounto,
e arth
Compressor
runs.
_1
the electric components
normal?
Compressor
worn out.
Evaporator when
operating set for more
rost 30
doesn't
than
rain. form at the
Poor compressing.
Refrigerant leaks.
___
-9-
Motor is
Compressor.
Repair the
Compressor.
H
COMPRESSOR
[_
AND ANOTHER
Power Source
ELECTRIC
COMPONENTS
Separate the PTC-STARTER from
the Compressor and measure the
voltage between M and C of the
Compressor.
H
The applied voltage is not in the
range of Rating Voltage + 10%.
Check the
resistance of the
Compressor Motor. H
voltage, (Rating
voltage + 10%)
Equal to the applied
H
to use in the
dvice therange.
customer
specified
M-C, S-C, and M-S.
Test the resistance among
Replace the Compressor.
i
[
,D>
YES
[_
Check the
PTC.
resistance of the
I
I Test the resistance of the both
_1
terminals in the PTC-STARTER,
NO
D>
Check OLR
H
regular
Check ifOLR
applying a
Replace the
PTC-STARTER.
in forcible OLP operation
by turning instant power on
0LP off.
works within 30 sec.
and
--9>
YES
.._
NO
_
Check the
starting state.
Measure minimum starting voltage
after checking steps 1-3 above,
Measure the pressure balance of
the PTC at the interval of more
than 5 min.
Starts at the voltage of
more than 90%.
Replace OLR
j,
NO
._
Normal.
of 85% below.
Starts at the voltage
state at the regular
voltage
above.
Check the
starting
NO
Replace the PTC.
--_
Normal.
PTC
First, separate the PTC from
the Compressor and check the
voltage between NO 5 and 6
in the PTC with a multitester or
Poor starting or no
operating of the
Compressor.
Wheatstone
Bridge.
range of 15-28 for
The 22_
the
valuePTC.
is in the
_
-_
The value is 0.
H
•_
The value is _.
H
Separate the OLP from
the Compressor and
check resistance value
between two terminals of
OLP with Tester.
Normal
q
Abnormal
Abnormal
YE_
electric
components.
Check another
--_
Replace OLR
I
o
÷
÷
m
-11-
electric
Check other
components.
PTC.
Replace the
PTC.
Replace the
5. EXPLODED
VIEW
I
I
-12-
-13-
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