LG GR-349SQF.CEWQEHU, Service Manual

Page: 10 / 36

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
ADJUST
SCREW
HEATER
BIMETAL
Figure 20
NOTE : 1. This is a basic diagram and specifications vary in different localities.
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3854JS8003Y
2.Ref.
Circuit 2
2.Circuit 2 has been only applied to C4 C5 B3 power cord type.
2.Ref.
Circuit
1
3854JS8003Z