LG GR-409GLPA-GLQA-GVPA-GVQA Service Manual ▷ View online
4 FAN AND FAN MOTOR
1) Remove freezer drawers.
2) Remove two cap, screws and loosen two screws in Grille Fan.
3) Pull out the Grille Fan and Shroud, F.
4) Disconnect the housing of lead wire.
5) Separate the Fan Assy.
6) Losse 2 screw fixed to the Bracket.
7) Pull out Shroud, F remove the Fan Motor Assy.
8) Separate the Motor Bracket and Rubber.
2) Remove two cap, screws and loosen two screws in Grille Fan.
3) Pull out the Grille Fan and Shroud, F.
4) Disconnect the housing of lead wire.
5) Separate the Fan Assy.
6) Losse 2 screw fixed to the Bracket.
7) Pull out Shroud, F remove the Fan Motor Assy.
8) Separate the Motor Bracket and Rubber.
5 DEFROST CONTROL ASSY
Defrost Control Assy consists of Thermistor and Fuse, Melting.
Thermistor functions to defrost automatically and it is attached to
metal side of the Evaporator and senses temperature.
Fuse, Melting is a kind of safety device for preventing overheating
of the Heater when defrosting.
At the temperature of 72°C, it stops the emission of heat from the
Heater.
1) Pull out the Shroud, F after removing the Grille.
2) Separate the connector connected with the Defrost Control
Thermistor functions to defrost automatically and it is attached to
metal side of the Evaporator and senses temperature.
Fuse, Melting is a kind of safety device for preventing overheating
of the Heater when defrosting.
At the temperature of 72°C, it stops the emission of heat from the
Heater.
1) Pull out the Shroud, F after removing the Grille.
2) Separate the connector connected with the Defrost Control
Assy and replace new one.
6 DAMPER CONTROL
1) Remove the Cover Lamp, R and loosen 2 screw.
2) Pull the Control Box, R and separate the lead wire
2) Pull the Control Box, R and separate the lead wire
housing.
3) Remove the Cover Lamp, R.
4) Separate the Insulation Multi Duct and Control Box, R.
5) Disassemble the Knob.
6) Separate the Damper Control and Control Box, R.
7) Separate the Damper Control and Resistor.
8) Disconnect the lead wire.
4) Separate the Insulation Multi Duct and Control Box, R.
5) Disassemble the Knob.
6) Separate the Damper Control and Control Box, R.
7) Separate the Damper Control and Resistor.
8) Disconnect the lead wire.
7 HEATER, SHEATH & HEATER, CORD-L
In this refrigerator, Heater, Sheath & Heater, Cord-L are
used for defrosting heater. During heating, the temperature
of heater rises about 300~350°C. Therefore, be careful not
to burn while servicing.
1) After removing the Grille and Shroud, separate the
used for defrosting heater. During heating, the temperature
of heater rises about 300~350°C. Therefore, be careful not
to burn while servicing.
1) After removing the Grille and Shroud, separate the
Heater, Sheath by disconnecting the connectors.
2) Exchanged Heater, Sheath and connected the housing.
3) If the Heater, Cord-L is defected, disconnect the
connectors, and separate the Heater, Cord-L with
Long Nose.
Long Nose.
4) Replace and assembly the Heater, Cord-L and connect
the connectors.
REFRIGERATOR ROOM LAMP
Heater, Sheath
Heater, Cord-L
GUIDE FAN
FAN
SHROUD
FAN MOTOR
GRILLE
Thermister
Fuse, Melting
Figure 13
Figure 14
Figure 11
Figure 12
- 8 -
NOTE : This is a basic model. The shape of refrigerator is subject to change.
PARTS IDENTIFICATION
- 5 -
Door Basket
(2, 3, 4)
(2, 3, 4)
Water Tank
2 Bottle
Door Basket
Door Basket
Leveling Screw
Utility Corner
(movable)
(movable)
Egg Tray(1 or 2)
Freezer Temperature
Control
Removable
Glass Shelf(2 or 3)
Lamp
Multi-air Flow Duct
Fresh Zone
(Optional)
Refrigerator
Temperature Control
Vegetable Drawer
Used to keep fruits
and vegetables, etc.
fresh and crisp.
Ice Cube Tray
Freezer
Compartment
Removable
Plinth
Features of refrigerant (R600a)
• Achromatic and odor less gas.
• Flammable gas and the ignition (explosion) at 494°C.
• Upper/lower explosion limit: 1.8%~8.4%/Vol.
• Flammable gas and the ignition (explosion) at 494°C.
• Upper/lower explosion limit: 1.8%~8.4%/Vol.
Features of the R600a refrigerator
• Charging of 60% refrigerant compared with a R134a model
• The suction pressure is below 1bar (abs) during the operation.
• Because of its low suction pressure, the external air may
• The suction pressure is below 1bar (abs) during the operation.
• Because of its low suction pressure, the external air may
flow in the cycle system when the refrigerant leak, and it
causes malfunction in the compressor.
causes malfunction in the compressor.
• The displacement of compressor using R600a must be at
least 1.7 times larger than that of R134a.
• Any type of dryer is applicable (XH-5, 7, 9).
• The EVAPORATOR or any other cycle part that has
• The EVAPORATOR or any other cycle part that has
welding joint is hidden in the foam. (If not hidden inside,
the whole electric parts must be tested with the
LEAKAGE TEST according to the IEC Standard.)
the whole electric parts must be tested with the
LEAKAGE TEST according to the IEC Standard.)
• The compressor has label of the refrigerant R600a.
• Only the SVC man must have an access to the system.
• Only the SVC man must have an access to the system.
Installation place
• Must be well ventilated.
• Must be 20 m
• Must be 20 m
3
or larger.
• Must be no-smoking area.
• No ignitable factors must be present.
• No ignitable factors must be present.
Utilities
• Refrigerant cylinder (MAX NET 300g)
• Manometer
• Vacuum pump (600
• Manometer
• Vacuum pump (600
L
/min)
• Piercing Clamp
• Quick coupler
• Hoses (5m-1EA, 1m-3EA)
• LOKRING
• Portable Leakage detector (3g/year
• Quick coupler
• Hoses (5m-1EA, 1m-3EA)
• LOKRING
• Portable Leakage detector (3g/year
↓
)
• Nitrogen cylinder (for leakage test)
• Concentration gauge
• Concentration gauge
Make sure before Servicing
• Refrigerant
Confirm the refrigerant by checking Name Plate and the label
on the compressor, after opening the COVER ASSY,
BACK-M/C.
on the compressor, after opening the COVER ASSY,
BACK-M/C.
• If the refrigerant is R600a, you must not weld or apply a
heat source.
Air Recharging in Compressor
Before refilling the refrigerant, you must perform the test according
to Chapter 5 (TROUBLESHOOTING CHART). When the defects
are found, you must discharge the residual refrigerant (R600a) in
the outdoor. For discharging the refrigerant R600a, break the
narrow portion of tube extension by hand or with a pipe cutter as
shown in Figure 1. Leave it for 30min in outside to stabilize the
pressure with ambient. Then, check the pressure by piercing the
dryer part with piercing pliers. If the refrigerant is not completely
discharged, let the refrigerator alone for more 30min in outside.
to Chapter 5 (TROUBLESHOOTING CHART). When the defects
are found, you must discharge the residual refrigerant (R600a) in
the outdoor. For discharging the refrigerant R600a, break the
narrow portion of tube extension by hand or with a pipe cutter as
shown in Figure 1. Leave it for 30min in outside to stabilize the
pressure with ambient. Then, check the pressure by piercing the
dryer part with piercing pliers. If the refrigerant is not completely
discharged, let the refrigerator alone for more 30min in outside.
Attach the service tube installed with a Schrader valve (one-way
valve) by using the LOKRING (Figure 2). Then, connect the
Schrader valve (one-way valve) to the pump that is connected to
the discharging hose leading to the outside. When discharging the
residual refrigerant, repeat 3 cycle that includes 3min of the pump
running->pump off->30sec of the compressor running.
valve) by using the LOKRING (Figure 2). Then, connect the
Schrader valve (one-way valve) to the pump that is connected to
the discharging hose leading to the outside. When discharging the
residual refrigerant, repeat 3 cycle that includes 3min of the pump
running->pump off->30sec of the compressor running.
After the refrigerant (R600a) is completely discharged, repair any
defective parts and replace the dryer. At any case you must use the
LOKRING for connecting or replacing any part in the cycle (No Fire,
No Welding). Connect the Schrader valve to pump with the coupler.
And then turn the pump on for vacuum state (Figure 3). Let the
pump run until the low-pressure gauge indicates the vacuum (gauge
pressure 0, absolute pressure -1atm or -760mmHg). Recommended
vacuum time is 30 min. Charge the N
defective parts and replace the dryer. At any case you must use the
LOKRING for connecting or replacing any part in the cycle (No Fire,
No Welding). Connect the Schrader valve to pump with the coupler.
And then turn the pump on for vacuum state (Figure 3). Let the
pump run until the low-pressure gauge indicates the vacuum (gauge
pressure 0, absolute pressure -1atm or -760mmHg). Recommended
vacuum time is 30 min. Charge the N
2
gas in order to check for
leakage from welding points and the LOKRING. If leakages are
found, repair the defects and repeat the vacuum process.
found, repair the defects and repeat the vacuum process.
After the system is completely vacuumed, fill it with the refrigerant
R600a up to what has been specified at your refrigerator Name
Plate. The amount of refrigerant (R600a) must be precisely
measured within the error of ±2g by an electron scale (Figure 4).
R600a up to what has been specified at your refrigerator Name
Plate. The amount of refrigerant (R600a) must be precisely
measured within the error of ±2g by an electron scale (Figure 4).
If you use the manifold connected with both the refrigerant
(R600a) cylinder and the vacuum pump simultaneously,
make sure the pump valve is closed (Figure 5).
(R600a) cylinder and the vacuum pump simultaneously,
make sure the pump valve is closed (Figure 5).
Connect the charging hose (that is connected to the refrigerant
(R600a) cylinder) to the Schrader valve installed on the service
tube. Then, charge the refrigerant (R600a) by controlling the
Throttle valve. When you do so, do not fully open the Throttle valve
because it may make damage to the compressor. Gradually charge
the refrigerant (R600a) by changing open and close the Throttle
Valve (5g at each time). The charging hose must use a one-way
valve to prevent the refrigerant refluence. Close the Schrader valve
cap after the refrigerant (R600a) is completely recharged.
(R600a) cylinder) to the Schrader valve installed on the service
tube. Then, charge the refrigerant (R600a) by controlling the
Throttle valve. When you do so, do not fully open the Throttle valve
because it may make damage to the compressor. Gradually charge
the refrigerant (R600a) by changing open and close the Throttle
Valve (5g at each time). The charging hose must use a one-way
valve to prevent the refrigerant refluence. Close the Schrader valve
cap after the refrigerant (R600a) is completely recharged.
After you completely recharge the refrigerant (R600a), perform the
leakage test by using a portable leakage detector or soapy water.
Test the low pressure (suction) parts in compressor off time and
high pressure parts in compressor on time. If the leakages are
found, restart from the refrigerant (R600a) discharging process and
repairs defects of leaks.
leakage test by using a portable leakage detector or soapy water.
Test the low pressure (suction) parts in compressor off time and
high pressure parts in compressor on time. If the leakages are
found, restart from the refrigerant (R600a) discharging process and
repairs defects of leaks.
After the leakage test, check the temperature of each parts of the
cycle. Check with hands if the CONDENSER and the case (HOT-
LINE pipe) that is contacted to the door gasket are warm. Confirm
that frost is uniform distributed on the surface of the
EVAPORATOR.
cycle. Check with hands if the CONDENSER and the case (HOT-
LINE pipe) that is contacted to the door gasket are warm. Confirm
that frost is uniform distributed on the surface of the
EVAPORATOR.
TO THE
VACUUM
PUMP
VACUUM
PUMP
PRESSURE
GAUGE
GAUGE
Figure 3
WEIGH SCALE
THROTTLE
VALVE
VALVE
COUPLE
REFRIGERANT
(R600a)
(R600a)
CHARGING HOSE
Figure 4
FILLING OR
CHARGE TUBE
CHARGE TUBE
VALVE TO BE OPENED
WHEN REFILLING
WHEN REFILLING
VALVE TO BE CLOSED
AFTER VACUUM
AFTER VACUUM
TO THE VACUUM PUMP
TO THE
REFRIGERATION
SYSTEM
REFRIGERATION
SYSTEM
TO THE CHARGE
CYLINDER
CYLINDER
Figure 5
SERVICING PRECAUTIONS
- 3 -
POINT TO BE
BROKEN
BROKEN
CHARGE TUBE
EXTENSION
EXTENSION
SCHRADER VALVE
(ONE-WAY VALVE)
(ONE-WAY VALVE)
LOKRING
SERVICE TUBE
EXTENSION
EXTENSION
Figure 1
Figure 2
1.Ref. No: GR-409/409P
2.Ref. No: GR-369
ITEMS
SPECIFICATIONS
DIMENSIONS (mm)
595(W)
X
626(D)
X
1880(H)
NET WEIGHT (kg)
77
COOLING SYSTEM
Fan Cooling
REFRIGERATOR
Knob Dial
FREEZER
Button
Full Automatic
DEFROSTING SYSTEM
Heater Defrost
DOOR FINISH
Pre-Coated Metal
OUT CASE
Painted Steel Sheet
INNER CASE
ABS
INSULATION
Polyurethane Foam
DEFROSTING DEVICE
Heater, Sheath & Heater, Cord-L
REFRIGERANT
R600a(60g)
LUBRICATION OIL
FREOL S10(280 cc)
TEMPERATURE
CONTROL
ITEMS
SPECIFICATIONS
Transparent Shelf(3 EA)
REFRIGERATOR
Vegetable Container(1 EA)
COMPARTMENT
Vegetable Container Cover(1 EA)
Fresh Zone Container(1 EA)*
Dairy Pocket Cover(2 EA)
Egg Tray(2 EA)
DOOR POCKET
Little Pocket(5 EA) 4 or 3 EA
Bottle Pocket(1 EA)
FREEZER
Tray Drawer(4 EA)
COMPARTMENT
Ice Tray(1 EA)
COMPRESSOR
PTC Starting Type
EVAPORATOR
Fin Tube Type
CONDENSER
Side & Wire Condenser
WATER DISPENSER
WATER TANK(1 EA)*
SPECIFICATIONS
- 4 -
* Optional Parts
ITEMS
SPECIFICATIONS
DIMENSIONS (mm)
595(W)
X
626(D)
X
1710(H)
NET WEIGHT (kg)
72
COOLING SYSTEM
Fan Cooling
REFRIGERATOR
Knob Dial
FREEZER
Button
Full Automatic
DEFROSTING SYSTEM
Heater Defrost
DOOR FINISH
Pre-Coated Metal
OUT CASE
Painted Steel Sheet
INNER CASE
ABS
INSULATION
Polyurethane Foam
DEFROSTING DEVICE
Heater, Sheath & Heater, Cord-L
REFRIGERANT
R600a(60g)
LUBRICATION OIL
FREOL S10(280 cc)
TEMPERATURE
CONTROL
ITEMS
SPECIFICATIONS
Transparent Shelf(2 EA)
REFRIGERATOR
Vegetable Container(1 EA)
COMPARTMENT
Vegetable Container Cover(1 EA)
Fresh Zone Container(1 EA)*
Dairy Pocket Cover(2 EA)
Egg Tray(1 EA)
DOOR POCKET
Little Pocket(3 EA)
Bottle Pocket(1 EA)
FREEZER
Tray Drawer(4 EA)
COMPARTMENT
Ice Tray(1 EA)
COMPRESSOR
PTC Starting Type
EVAPORATOR
Fin Tube Type
CONDENSER
Side & Wire Condenser
* Optional Parts
or Vinyl Coated Metal
or Vinyl Coated Metal
Display