Maytag 56326 Spezifikationen PDF herunterladen (Seite 57)

STARTING RELAY

The

starting relay

energizes

the

compressor

start winding.

When current

is

applied to the

compressor,

the magnetic

coil will raise

the relay

plunger

to

close

the

starting contacts,

thus

connecting

the

start

winding in

parallel

with the run

winding.

As the

compressor

motor

approaches

f

ull running

speed,

the

current

in the run

winding

and in the

relay

coil

decreases

and

the

plunger

drops out,

opening the

start winding

circuit. The

compressor

continues

to

operate

on the

run winding.

NOTE:

A replacement

relay

must

match

with the

compressor

windings.

lt is

important

to replace

a defective

starting

relay

with the

replacement

relay

specified

in

the

parts

manual.

and run

terminals

of the

compressor.

This

device is

connected

in

parallel

with

the

run

capacitor

and in

series with

the

compressor

start

windings.

This

will

produce

a short

circuit

across

the run

capacitor

during

the

compressor

starting

sequence,

and

full

current is

applied to

the

start winding

as

well

as

the

main

winding.

Since the

PTC

device

is temperature

sensitive,

a variance

in its temperature

causes

a change

in its

resistance.

When

current

is first

applied

to the

compressor,

the PTC

device's

low

resistance

shorts

out

the run

capacitor,

thus

producing

adequate

motor

starting torque.

As the

compressor

motor

approaches

running

speed,

the

current

through

the

PTC

device

causes the

temperature

and

resistance

of the PTC

device to increase

to

where

it

appears

to

be an

open circuit.

The

compressor

continues

to

operate

on

the run

winding

in

parallel

with the

series

combination

of the

run

capacitor

and

start

winding.

START

PTC

STARTING

DEVICE

&

RUN

CAPACITOR

OVERLOAD

PROTECTOR

,_

o

,[n

RUN

PTC

STARTING

DEVICE

OR

\

POWER

LEADS

The

PTC

solid

state

starting

push-on

component

mounted

+

CAPACITOR

LEADS

CHECKING

PTC

DEVICE

1.

Unplug

the line

cord.

2.

Discharge

the

capacitor.

3.

Remove

the

wires

from

the

pTC

device

terminals.

4.

Allow

the

PTC

device

to

cool to

room

temperature,

device is

a

to

the

start

4-17

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