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LG LTCS20220W User Manual

LG LTCS20220W
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4-2-3 PTC - Applied Circuit Diagram
Starting Method for the Motor
4. COMPRESSOR ELECTRICAL
4-1 COMPRESSOR
4-1-1 Role
The compressor intakes low temperature and low pressure gas
from the evaporator of the refrigerator and compresses this gas
to high temperature and high pressure gas. It then delivers the
gas to the condenser.
4-1-2 Composition
The compressor includes overload protection. The PTC starter
and OLP (overload protector) are attached to the outside of the
compressor. Since the compressor is manufactured to
tolerances of 1 micron and is hermetically sealed in a dust and
moisture-free environment, use extreme caution when
repairing it.
4-1-3 Note for Usage
(1) Be careful not to allow over-current.
(2) If compressor is dropped or handled carelessly, poor
operation and noise may result.
(3) Use proper electric components appropriate to the particular
compressor in your product.
(4) Keep compressor dry.
If the compressor gets wet (in the rain or a damp environment)
and rust forms in the pin of the Hermetic Terminal, poor
operation and contact may result. If the hermetic connector
rusts out or fails, refrigerant and oil will be expelled into the
contact area, probably resulting in smoke and fire.
(5) When replacing the compressor, be careful that dust,
humidity, and soldering flux don´t contaminate the inside of the
compressor. Contamination in the cylinder may cause noise,
improper operation or even cause it to lock up.
4-2 PTC-STARTER
4-2-1 Composition of PTC- Starter
(1) PTC (Positive Temperature Coefficient) is a no-contact
semiconductor starting device which uses ceramic material
consisting of BaTiO3.
(2) The higher the temperature is, the higher the resistance
value. These features are used as a starting device for the
motor.
4-2-2 Role of PTC-Starter
(1) The PTC is attached to the Sealed Compressor and is used
for starting the motor.
(2) The compressor is a single-phase induction motor. During
the starting operation, the PTC allows current flow to both the
start winding and main winding.
COMPRESSOR
ACCESORIES
PTC DIAGRAM
- 12 -
PK
CAPACITOR PART
2
3
5
P.T.C
6
Cr
BL
BK
BL
OLP
PART
COMP' EARTH
GN
(GN)
/YL
M
S
LF, MQ COMP' (e - PTC)
* P.T.C OPTION
3
2
5
6
4-2-6 Motor Restarting and PTC
(1) It requires approximately 5 minutes for the pressure to
equalize before the compressor can restart.
(2) The PTC device generates heat during operation.
Therefore, it must be allowed to cool before the compressor can
restart.
4-2-7 Relation of PTC-Starter
(1) If the compressor attempts to restart before the PTC
device is cooled, the PTC device will allow current to
flow only to the main winding.
(2) The OLP will open because of the over current condition.
This same process will continue (3 to 5 times) when the
compressor attempts to restart until the PTC device has
cooled. The correct OLP must be properly attached to prevent
damage to the compressor.
Parts may appear physically identical but could have different
electrical ratings. Replace parts by part number and model
number. Using an incorrect part could result in damage to the
product, fire, injury, or possibly death.

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LG LTCS20220W Specifications

General IconGeneral
Child lock-
Door hingeRight
Product colorWhite
Housing materialMetal, Stainless steel
Reversible doorsYes
Shelves materialTempered glass
Appliance placementFreestanding
Noise level- dB
Total net capacity572 L
Total gross capacity- L
Fridge net capacity416 L
Fridge number of shelves/baskets2
Freezer positionTop-placed
Freezing capacity- kg/24h
Freezer net capacity156 L
Storage time during power failure- h
Connected load- W
Annual energy consumption406 kWh
Weight and Dimensions IconWeight and Dimensions
Depth838.2 mm
Width736.6 mm
Height1676.4 mm
Weight91600 g

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