LG GR-K18PBS Service Manual - Page 51

Characteristics

of

each

part

9-1-7.

Capacitor

operating

principle

and

temperature

characteristics

(1)

Function

1.

Capacitor

(CIS):

Sometimes

called

the

starting

capacitor,

it

is

used

to

improve

the

motor

operation

characteristics

in

low

pressure

because

the

operating

torque

is

weak

based

on

the

characteristics

of

the

motor

within

the

compressor

of

the

refrigerator

in

low

voltage

areas

(85%

or

less

than

rated).

2.

Capacitor

(C/R):

Sometimes

called

the

running

capacitor,

it

is

used

to

improve

the

operating

torque

of

the

motor

within

the

compressor

of

the

refrigerator.

(Capacitor

for

operation)

(2)

Concept

When

you

put

dielectric

material

between

two

facing

electrodes

and

connect

the

voltage,

the

electric

charge

wil

l

be

accumulated.

This

functional

device

is

called

a

capacitor

and

the

basic

structure

is

as

shown

in

the

right

figure.

(3)

Poor

symptom

(product)

A

electrode

-

Dielectric

material

-

17

B

electrode

Problem

(parts)

Symptom

Check

method

Resolution

❑isconnected

(open)

Shorted

Normal

1)

Compressor

does

not

work.

2)

Compressor

is

heated.

3)

OLP

is

operating.

4)

Power

fuse

is

disconnected.

(Immediately

after

exchanging

or

frequently)

-

Measure

the

both

ends

of

the

capacitor

with

a

tester

to

see

if

there

is

no

change:

O.

LI.

-

Exchange

the

capacitor

1)

Compressor

does

not

work.

2)

Compressor

is

heated.

3)

Compressor

repeatedly

works

and

stops.

4)

OLP

is

operating.

5)

Power

fuse

is

disconnected.

(Immediately

after

exchanging

or

frequently)

-

Measure

the

both

ends

of

the

capacitor

with

a

tester

to

see

if

it

is

0

c≥.

-

Exchange

the

capacitor

1)

Compressor

does

not

work.

2)

Compressor

is

heated.

3)

Compressor

repeatedly

works

and

stops.

4)

OLP

is

operating.

5)

Power

fuse

is

disconnected.

(Immediately

after

exchanging

or

frequently)

-

Measure

the

both

ends

of

the

capacitor

with

a

tester

to

see

if

it

decreases

and

then

slowly

increases

(Move

toward

0

a

and

then

to

—

LI).

-

Check

other

parts

Caution

►

Before

the

measurement,

short

the

capacitor

with

a

driver

to

discharge

all

the

electricity.

►

After

setting

the

multipl

ier

rate

to

maximum

within

the

resistance

measuring

range,

measure

whi

le

switching

the

terminals.

-

51

-

LG GR-K18PBS Service Manual - Page 51

Caution

Page 51 highlights