4-3 OLP (OVER LOAD PROTECTOR)
4-3-1 Definition of OLP
(1) OLP (OVER LOAD PROTECTOR) is attached to
Hermetic Compressor and protects Motor by cutting off
current in Compressor Motor by Bimetal in the OLP in
case of over-rising temperature.
(2) When over-voltage flows to Compressor motor, Bimetal
works by heating the heater inside OLP,
and OLP protects Motor by cutting off current which
flows to Compressor Motor.
4-3-2 Role of OLP
(1) OLP is attached to Hermetic Compressor used to
Refrigerator and Show Case and prevents Motor Coil
from being started in the Compressor.
(2) Do not turn the Adjust Screw of OLP in any way for
normal operation of OLP.
(Composition and connection Diagram of OLP)
CONTACTING
POINT
COVER
BIMETAL
CONTACTING
POINT
HEATER
TERMINALS
ADJUST
SCREW
HEATER
BIMETAL
Figure 21
u
u
GR-R472/R522
NOTE : 1. This is a basic diagram and specifications vary in different localities.
5. CIRCUIT DIAGRAM
- 12 -
Summary of Contents for GR-472
Page 32: ...7 5 MAIN PWB ASSEMBLY AND PARTS LIST 7 5 1 MAIN PWB ASSEMBLY u u GR R472 R522 32 ...
Page 33: ...7 5 2 MAIN PWB ASSEMBLY u u GR S472 S522 33 ...
Page 34: ...7 5 3 REPLACEMENT PARTS LIST u u GR R472 R522 34 ...
Page 35: ...7 5 4 REPLACEMENT PARTS LIST u u GR S472 S522 35 ...
Page 36: ...7 5 5 PWB ASSEMBLY DISPLAY AND PARTS LIST u u GR R472 R522 36 ...
Page 37: ...7 5 6 PWB ASSEMBLY DISPLAY AND PARTS LIST u u GR S472 S522 37 ...
Page 38: ...7 6 1 PWB DIAGRAM u u GR R472 R522 38 ...
Page 39: ... 39 ...
Page 40: ...7 6 2 PWB DIAGRAM u u GR S472 S522 40 ...
Page 41: ... 41 REF TEMP CONTROL ...
