LG GR-409GTPA User guide
SPECIFICATIONS
1.Ref. No: GR-409/409P
ITEMS SPECIFICATIONS ITEMS
DIMENSIONS (mm) |
595(W)X626(D)X1880(H) |
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NET WEIGHT (kg) |
77 |
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REFRIGERATOR |
COOLING SYSTEM |
Fan Cooling |
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COMPARTMENT |
TEMPERATURE REFRIGERATOR |
Knob Dial |
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CONTROL |
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FREEZER |
Button |
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Full Automatic |
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DEFROSTING SYSTEM |
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DOOR POCKET |
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Heater Defrost |
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DOOR FINISH |
Pre-Coated Metal |
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or Vinyl Coated Metal |
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OUT CASE |
Painted Steel Sheet |
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FREEZER |
INNER CASE |
ABS |
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COMPARTMENT |
INSULATION |
Polyurethane Foam |
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COMPRESSOR |
DEFROSTING DEVICE |
Heater, Sheath & Heater, Cord-L |
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EVAPORATOR |
REFRIGERANT |
R600a(60g) |
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CONDENSER |
LUBRICATION OIL |
FREOL S10(280 cc) |
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WATER DISPENSER |
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* |
Optional Parts |
2.Ref. No: GR-369 |
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ITEMS |
SPECIFICATIONS |
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ITEMS |
DIMENSIONS (mm) |
595(W)X626(D)X1710(H) |
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NET WEIGHT (kg) |
72 |
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REFRIGERATOR |
COOLING SYSTEM |
Fan Cooling |
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COMPARTMENT |
TEMPERATURE REFRIGERATOR |
Knob Dial |
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CONTROL |
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FREEZER |
Button |
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Full Automatic |
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DEFROSTING SYSTEM |
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DOOR POCKET |
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Heater Defrost |
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DOOR FINISH |
Pre-Coated Metal |
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or Vinyl Coated Metal |
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OUT CASE |
Painted Steel Sheet |
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FREEZER |
INNER CASE |
ABS |
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COMPARTMENT |
INSULATION |
Polyurethane Foam |
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COMPRESSOR |
DEFROSTING DEVICE |
Heater, Sheath & Heater, Cord-L |
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EVAPORATOR |
REFRIGERANT |
R600a(60g) |
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CONDENSER |
LUBRICATION OIL |
FREOL S10(280 cc) |
* |
Optional Parts |
SPECIFICATIONS
Transparent Shelf(3 EA)
Vegetable Container(1 EA)
Vegetable Container Cover(1 EA)
Fresh Zone Container(1 EA)*
Dairy Pocket Cover(2 EA)
Egg Tray(2 EA)
Little Pocket(5 EA) 4 or 3 EA
Bottle Pocket(1 EA)
Tray Drawer(4 EA)
Ice Tray(1 EA)
PTC Starting Type
Fin Tube Type
Side & Wire Condenser
WATER TANK(1 EA)*
SPECIFICATIONS
Transparent Shelf(2 EA)
Vegetable Container(1 EA)
Vegetable Container Cover(1 EA)
Fresh Zone Container(1 EA)*
Dairy Pocket Cover(2 EA)
Egg Tray(1 EA)
Little Pocket(3 EA)
Bottle Pocket(1 EA)
Tray Drawer(4 EA)
Ice Tray(1 EA)
PTC Starting Type
Fin Tube Type
Side & Wire Condenser
-4-
ADJUSTMENT
1 COMPRESSOR
1) Role
The compressor intakes low temperature and low pressure gas evaporated from Evaporator of the Refrigerator, and condenses this gas to high temperature and high pressure gas, and then plays delivering role to Condenser.
2) Composition
The Compressor is Composed of Compressor Apparatus compressing gas, Compressor Motor moving Compressor Apparatus and Case protecting Compressor Apparatus and Motor. There is Relay Assy (one set of PTC-Starter and Over Load Protector (OLP)) in Compressor. On the other hand, because the Compressor consists of 1/1000mm processing precision components and is sealed after production in absence of dust or humidity, deal and repair with care.
3)Note for Usage
(1)Be careful not to allow over-voltage and over-current.
(2)No Strike
If applying forcible power or strike (dropping or careless dealing), poor operation and noise may occur.
(3)Use proper electric components appropriate to the
Compressor.
(4)Note to Keep Compressor.
If Compressor gets wet in the rain and rust in the pin of Hermetic Terminal, the result may be poor operation and poor contact may cause.
(5)Be careful that dust, humidity, and flux welding don't inflow in the Compressor inside in replacing the
Compressor. Dust, humidity, and flux due to welding which inflows to Cylinder may cause lockage and noise.
2PTC-STARTER
1)Composition of PTC-Starter
(1)PTC (Positive Temperature Coefficient) is a no-contact semiconductor starting device which uses ceramic material and this material consists of BaTiO3.
(2)The higher the temperature is, the higher becomes the resistance value. These features are used as starting device for the Motor.
2)Role of PTC-Starter
(1)PTC is attached to Hermetic Compressor used for Refrigerator, Show Case and starts Motor.
(2)Compressor for household refrigerator applies to single-phase induction Motor.
For normal operation of the single-phase induction motor, in the starting operation flows in both main coil
3) PTC-Applied Circuit Diagram
According to Starting Method for the Motor
OVERLOAD
PROTECTOR(O.L.P)
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C |
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PTC |
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COMPRESSOR |
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S |
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MOTOR |
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S |
M |
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S |
M |
3M
PTC STARTER |
HERMETIC |
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TERMINAL |
RSIR |
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RELAY ASSY |
Figure 19 |
4)Motor Restarting and PTC Cooling
(1)For restarting after power off during normal
Compressor Motor operation, plug the power cord after
5 min. for pressure balance of Refrigerating Cycle and PTC cooling.
(2)During normal operation of the Compressor Motor, PTC elements generate heat continuously. Therefore,
if PTC isn't cooled for a while after the power has been shut off, Motor can't operate again.
5)Relation of PTC-Starter and OLP
(1)If the power is off during operation of Compressor and the power is on before the PTC is cooled, (instant shut- off within 2 min. or reconnect a power plug due to
misconnecting), the PTC isn't cooled and a resistance value grows. As a result, current can't flow to the subcoil and the Motor can't operate and the OLP operates by flowing over current in only in the main-coil.
(2)While the OLP repeats on and off operation about 3-5 times, PTC is cooled and Compressor Motor performs normal operation.
If OLP doesn't operate when PTC is not cooled, Compressor Motor is worn away and causes circuit- short and fire. Therefore, use a properly fixed OLP without fail.
6)Note to Use PTC-Starter
(1)Be careful not to allow over-voltage and over-current.
(2)No Strike
Don't apply a forcible power or strike.
(3)Keep apart from any liquid.
If liquid such as oil or water away enter the PTC, PTC materials it may break due to insulation breakdown of the material itself.
(4)Don't change PTC at your convenience.
Don't disassemble PTC and mold. If the exterior to the
PTC-starter is damaged, resistance value is altered and it may cause poor starting of the compressor motor may cause.
(5)Use a properly fixed PTC.
-9-
3 OLP (OVER LOAD PROTECTOR)
1) Definition of OLP
(1)OLP (OVER LOAD PROTECTOR) is attached to the Hermetic Compressor and protects the Motor by cutting off current in Compressor Motor in case of over-rising temperature by Bimetal in the OLP.
(2)When over-voltage flows to Compressor motor, the Bimetal works by heating the heater inside the OLP, and the OLP protects Motor by cutting off current which flows to the Compressor Motor.
2)Role of the OLP
(1)The OLP is attached to the Hermetic Compressor used for the Refrigerator and Show Case and prevents the Motor Coil from being started in the Compressor.
(2)Do not turn the Adjust Screw of the OLP in any way for normal operation of the OLP.
(Composition and connection Diagram of OLP)
CIRCUIT DIAGRAM
CONTACTING
POINT
COVER
BIMETAL
CONTACTING
POINT
HEATER
TERMINALS
BIMETAL
ADJUST
SCREW
Figure 20
HEATER
CIRCUIT DIAGRAM
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DISPLAY CONTROL P.W.B |
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RT-SENSOR |
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123456789 |
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GYPRBL YL BO RDBNWHWH |
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BO 1 |
GYPRBL YL BO RDBNWHWH |
THE PLUG TYPE, |
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DEF-SENSOR |
CAPACITOR PART, |
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BO 2 |
123456789 |
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BL 3 |
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COMPRESSOR EARTH |
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F-SENSOR |
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PART ON CIRCUIT |
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BL 4 |
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DIAGRAM ARE SUBJECT |
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DOOR OPEN A |
GY 5 |
PWB ASSY, MAIN |
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PERCEPTION B |
RD 6 |
TO CHANGE IN DIFFERENT |
LOCALITIES AND ACCORDANCE
WITH MODEL TYPE
11 10 9 87654321
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BL |
YL |
BK |
GY |
SB |
BN |
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BL |
YL |
BK |
GY |
SB |
BN |
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YL |
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POWER |
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SUPPLY |
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CORD |
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GN/YL |
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BK |
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C |
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N |
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R-LAMP |
GY |
FANMOTOR |
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L-CORDHEATER |
SHEATHHEATER |
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L |
BL |
PR |
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A |
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DOORSW-R |
RD |
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FUSE-M72˚C |
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B |
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BL |
BL |
BL |
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BL |
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WHEN STARTING CAPACITOR
IS NOT USED, NO.3,4 OF PTC
START IS CONNECTED
INTERNALLY
BK |
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BK |
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COOLINGFANMOTOR |
RUNNING |
PK |
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OVERLOADPROTECTOR |
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2 |
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BK |
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RD |
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C |
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STARTING |
4 |
5 S |
COMPRESSOR |
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M |
BL |
BL BL |
3 |
6 |
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CAPACITOR |
P.T.C |
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EARTH PART |
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PART |
STARTER |
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3854JD1026E
BK:BLACK |
BN :BROWN |
RD:RED |
BO:BRIGHT ORANGE |
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YL :YELLOW |
GN:GREEN |
BL :BLUE |
PR:PURPLE |
GY:GRAY |
WH:WHITE |
SB:SKY BLUE |
PK :PINK |
GN/YL:GREEN/YELLOW |
WH/BK:WHITE/BLACK |
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NOTE : 1. This is a basic diagram and specifications vary in different localities.
-10-
TROUBLESHOOTING (Mechanical Part)
1 COMPRESSOR AND ELECTRIC COMPONENTS
Power |
Remove the Relay Assy |
(Rating Voltage |
1 |
from the Compressor |
±10%)? |
Source. |
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and measure the voltage |
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between Terminal C of |
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Compressor and |
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Terminals M or S of |
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Relay Assy |
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YES
2
Check the
2resistance of Motor
Compressor.
Check the
3resistance of PTC-Starter.
4Check OLP.
Check
5
starting state.
No Voltage.
Applied voltage isn't in the range of Rating Voltage ±10%.
Check the resistance
among M-C, S-C and M-S in Motor
Compressor.
Check the resistance of
two terminals in PTC-
Starter.
Check if applying a regular OLP.
Measure minimum
starting voltage after 5 min. for balancing cycle pressure and cooling the PTC.
Advise the customer
to use a regular
Trans.
YES
NO Replace Compressor.
YES
NO
YES
OLP works within
30 sec. in forcible
OLP operation by turning instant power on and off.
Components start in the voltage of Rating Voltage ±10% below.
5
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5 |
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3 |
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3 |
4 |
5 |
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4 |
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Replace |
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Relay Assy |
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5 |
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YES |
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5 |
NO |
Replace |
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Relay Assy |
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YES
O.K.
NO
1
-11-
2 RELAY ASSY (PTC AND OLP)
Normal operation of |
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Compressor is |
Separate the Relay Assy |
impossible or poor. |
from Compressor and |
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measure the resistance |
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between M and S with a |
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Tester or Whistone Bridge. |
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(Figure 21) |
Separate the Relay Assy from the Compressor and check the resistance value
between two terminals of
OLP with a Tester.
C
M S
Figure 21
Observation value is
220V/50Hz : 22Ω±30%
115V/60Hz : 6.8Ω±30%
240V/50Hz : 33Ω±30%
127, 220V/60Hz :
22Ω±30%
The resistance value is 0 or serveral hundreds Ω.
The value is ∞.
YES Check another electric components.
NO
Check another
electric
components.
Replace
Relay Assy.
Replace Relay Assy.
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T |
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LN |
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2 |
C |
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M S |
32 |
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Figure 22
-12-
3 ANOTHER ELECTRIC COMPONENTS
Cooling is impossible
Compressor |
Check if current flows to |
doesn't run. |
the following |
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components. |
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a. Thermistor |
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b. Starting devices |
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c. OLP |
Running state of Compressor is poor.
Cooling ability is poor
Fan motor doesn't run.
d.Compressor coil
e.Circuit Parts
Check a starting voltage.
Check if current flows
to starting devices.
Check current flowing in sub-coil of
Compressor.
Check capacity of OLP.
The items described above are normal.
Check current flowing in SWITCH, DOOR.
Check current flowing in the
MOTOR[MECH], FAN.
Much frost are sticked |
Check current flowing |
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to the EVAPORATOR. |
of the following |
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components. |
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? |
THERMISTOR |
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? |
FUSE, MELTING |
Check current flowing
of the following components.
? HEATER, SHEATH ? HEATER, CORD-L
Cause.
Poor contacting.
Shorted or broken.
Poor contacting or shorted.
Coil shorted.
Poor contacting or shorted.
Low voltage.
Poor contacting and broken.
Shorted.
Lack of capacity.
Coil of motor
Compressor.
Poor contacting.
Coil is shorted.
Shorted.
Defect on
Heater, Cord-L
Replace
each component.
Raise the voltage.
Replace
each component.
Replace
the compressor.
Replace
each component.
Replace
each component.
Replace
the Heater, Sheath
Replace
the Heater, Cord-L
-13-
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