Maytag 56326 Spezifikationen PDF herunterladen (Seite 58)

5.

Remove

the

PTC

device

from

the

compressor.

6.

Using

an ohmmeter,

check

the

resistance

between

the

PTC

device

terminals.

The ohmmeter

should

register

between

3 and

20 ohms.

An extreme

variance

from

between

3

and

20 ohms

indicates

a defective

PTC d'evice

which

must be

replaced.

NOTE:

WE DISCOURAGE

USING

A

VOLTMETER

TO

CHECK

THE

PERFORMANCE

OF

THE PTC

DEVICE

BECAUSE

THE TEST

RESULTS

ARE

INFLUENCED

BY

SEVERAL

FACTORS,

SUCH

AS

ITS DEPENDENCE

ON

THE LINE

VOLTAGE

TO

THE COMPRESSOR,

THE

RESPONSE

CHARACTERISTIC

OF

THE

VOLTMETER

AND THE

PTC

DEVICE

TEMPERATURE

AT

THE

TIME THE

COMPRESSOR

IS ENERGIZED.

REPLACING

PTC

DEVICE

1. Unplug

the

line cord.

2. Disconnect

the PTC device

from the

compressor

terminals.

3. Remove

the

lead wires

from

the PTC

device

terminals.

4.

Replace

the device and

reconnect

the

wires

to the

proper

terminals.

RUN

CAPACITOR

The run capacitor

is mounted adjacent

to

the compressor.

lt is electrically

connected

between

the run and

start

windings

and

in

parallel

with

the PTC

device.

The capacitor

is connected

to the

compressor

circuit

to

provide

the required

phase

difference

between

the start

and

run

windings

for running

the compressor.

CAPACITOR

FAILURES

Failure

of the capacitor

may

be caused

by

(1)

a short

circuit,

(2)

open

circuit,

(3)

a

capacitor

that is low

in capacitance.

A short

circuit

will cause

the start

windings

to be energized

in the start

mode

all

the time.

The compressor

could

start

but

the overload

protector

would

eventually

trip, and

sooner

or

later, trip

continuously.

An open

circuit

should,

under

normal

conditions,

allow

the compressor

to

start.

Under

a

heavy

running

load, however,

the

compressor

will

usually

trip

on

the

overload.

A capacitor

may

lose capacitance

by

a

loss of

its electrolytic

properties.

The

compressor

would

run under

a

light

load,

but

would trip,on

the

overload

in

high

ambient

conditions.

TESTING CAPACITOR

CAUTION:

DISCHARGE

A CAPACITOR

BEFORE

HANDLING.

SHORT

ACROSS

/TS

TERMINALS,

US/NG

A RES/STOR

WITH A

MINIMUM

RES/STANCE

OF

lOOO OHMS,

We

recommend

using

a

caPacitor

analyzer

when

testing.

Preferably

a solid

state

unit

that measures

capacitance

and

power

factor

of any capacitor,

and

has an

automatic

means of

discharging

the

capacitor

through

resistance.

4-18

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