Maytag 56326 Service Manual

r-

Side-By-Side

and

ToP

Mount

Refrigerator

Service

Manual

svF-0289 PRINTED

IN

U.S.A.

o Copyright

1989

--

,-a.

l..r

4--

,

,.-.-.-,=--:..

56326

]

INDEX

4-1 4-4

4-8 4-11 4-15 4-15

4-16

4-17 4-17 4-20 4-25

4-28

4-33

4-34

4-36

SaBIECT

SECTION

1

.

INTRODUCTION

SECTION

2

.

INSTALLATION

Specifications Warranty Installation

Instructions

Operation

SECTION

3. SERVICE

PROCEDURES

General Checking

Operation

Leak

Testing

Leak

Testing

Yoder

LooP

Checking

Pressures

Evacuating

&

Recharging

Sealed

System

SweeP

Charge

SECTION

4 - COMPONENTS

Compressor Heat

Exchanger Condenser Freezer

Evaporator

Electrical

System Compressor Overload

Protector

Starting

RelaY

PTC &

Run CaPacitor

Temperature

Oontrol

Defrost

Timer

Defrost

Heater

&

Thermostat

Condenser

Fan

Freezer

Fan

Divider Channel

Heater

SECTION

5

.

CABINET

& RELATED

COMPONENTS

Food

Liner

Compartment

Accessories

(shelves)

PAGE

SaBIECT

2-1 2-4 2-5

2-14

3-1 3-5

3-7

3-8

3-10

3-12 3-14

Meat

Keeper

5-3

Freezer

Cold

Control

5-4

Mounting

Hardware

5-6

Drain

Tubes

5-6

Styrofoam

Drip

Tray

5-7

Cabinet

Doors

&

Assoc.

Parts

5'9

Paint Touch-up

5-9

Door

Liner

5-9

Door Panel

S10

Reversing

Doors

$11

Top

Hinge

5-11

Door Closer

5-11

Shelf Guards

5'12

Cabinet

Wheels

5-12

Cabinet

Leveling

5-12

Gasket

Seal

5-13

Door

Switch

5-14

Water Components

5-15

Water

Supply

5-15

Water

Valve

5-15

Water Fill

Tubing

5-15

Water

Reservoir

S18

Fountain

Assembly

5-2O

lce &

Water

Fountain

5-20

lce &

Water

Actuator

Switch

5-21

Dash-Pot

5-22

Switch

Assembly

5-22

lce &

Water

Activating

Sw. +23

lce Dispensing

Safety

Door 5-23

Fountain

Heater

5-23

lce Storage

Bin

5-24

Interlock

Switch

5-24

Auger

5-25

PACE

SECTION6.ICEMAKER

lnstallation Servicing

SECTION

7

.

TROUBLESHOOTING

SECTION

8

.

SCHEMATICS

sEcTroN

I - SPECIFICATIONS

6-1

6-10

5-1 5-1

MI\YTAG

SECTION

I

INTRODUCTION

GENERAL

This

manual covers

Maytag Refrigerators

manufactured beginning in 1989. Those

models

covered are

15, 17, 19, 20, 21,22,23

and

24

cubic

foot

Side-By-Side and

Top Mount

ref rigerators.

SAFETY

PRECAUTIONS

This

service information is intended to be used

by a

qualified

service technician, who is

familiar

with

proper

and safe

procedures

to

be followed when repairing any

electrical

appliance.

All fests and repairs should be

performed

by a

qualified

service technician,

using only Genuine Maytag

parts.

Repairs and servicing

attempted by uninformed

persons

can result in hazards

developing

due to improper assembly

or adjustment. While

performing

such

repairs,

persons

not

having

the

proper

background may

subject

themselves to

the risk

of

injury

or electrical

shock which can be

serious or even

fatal.

1-1

M/\YTAG

SECTION

2

INSTALLATION

SPECIFICATIONS

TOP

MOUNT

Models

SIDE.BY.SIDE

Models

RSC2OA RSD2OA

RSD22A RSW22A RSD24A

RSW24A

RTC15A RTS17A RTC17A RTD17A RTS19A

RTC19A RTD19A RTD21A RTW22A RTD23A

2-1

DIMENSIONS

TOP

MOUNT

SIDE-BY.SIDE

;i

*"1

L-C

ry

It-B--hrl

ri

o

le

I

:l ; lrl

lr

trln

I

r-----------------r-1

I

"

-i:

T

I

A

E

ffi

Mod. No.

A

B

c

D

E

F

G

RTC15A

60"

29"

31

3t10"

25

3t8"

27 5/8"

29 15t16"

55 3/8"

RTSl 7A

641t2"

29'

31 3/10"

25

3t8"

27 5t8"

29 15/16"

55 3/8"

RTCl7A

641/2"

29"

31

3/10" 25

3t8" 27

5/8" 29

15t16"

55 3/8"

RTD17A

64 1/2" ZJ

31 3/10"

25

3/8'

27 5/8"

29 15/16"

55 3t8"

RTC19A

65112"

31 1t2"

33 4t5"

25

3t8"

27

5t8"

30"

57 7

/8"

RTS19A

651/2'

31

1t2"

33 4t5'

25 3/8'

27

5/8"

erl"

57 7 l8'

RTD19A

65 1t2"

31

1/2"

33 4t5"

25 3t8"

27

5/8"

30"

57 7t8"

RTD21A

651t2"

31 1/2"

33 4t5"

28

3t8"

30 5/8"

32

15/16"

60

7 /8"

RTW22A

65 1t2"

33"

3511t32"

28

3t8"

30 5/8"

32

15t16"

62 3t8"

RTD23A

651/2"

33"

3511t32'

28 3t8"

30

5t8"

32

15/16"

62

3t8"

RSC2OA

66 3/8" JI

34 7 t8"

26

3t4"

29"

31

11t32"

46

3t4"

RSD2OA

66 3/8" JI

34 7 /8"

26

3t4" ZJ

31

11t32"

46 3t4"

RSD22A

66 3/8'

33"

36 7 t8"

26

3t4"

29 1/4"

3111t32"

48

3t4"

RSD24A

66

3/8"

35 3t4"

39 3/5"

26

3t4"

29"

31 11t32'

48

3t4"

RSW22A

66

3/8"

33"

36 7 /8"

26

3t4"

29 114"

31 11/32"

48 3t4"

RSW24A

66

3/8"

35 3/4"

39 3/5"

26

3t4"

29"

3111t32"

48

3/4"

2-2

CAPACITY

Mod. No.

Total Volume Fresh Food Vol. Freezer Vol.

Total

Shelf

Area

RTC15A

14.7

10.51

4.14

22.6

RTS17A

16.5

11.69 4.83 23.8

RTC17A

16.5

11.69

4.83

24.2

RTD17A 16.5

11.69 4.83 24.2

RTC19A

18.6

12.89

5.70

28.6

RTS19A

18.6 12.90

5.70

26.3

RTD19A

18.5

12.81

5.70

28.4

RTD21A 21.0

'14.59

6.42

32.5

RTW22A 21.9

14.98

6.91 32.9

RTD23A 22.5 15.52

6.96 34.6

RSC2OA 20.2 13.66

6.57

24.4

RSD2OA 20.2 13.58

o.c/

24.4

RSD22A 21.8 15.22

6.57 25.3

RSD24A 23.8 15.22

8.53 29.5

RSW22A 21.6 15.22

6.34 24.1

RSW24A 23.5 15.22

8.25 28.1

2-3

MAYTAG

REFRIGERATOR

WARRANTY

Full

One Year

Warranty

For

one

(1) year

from the

date of

original retail

purchase,

any

part

which

fails

in

normal

home

use will

be

repaired

or

replaced

f ree

of charge.

Limited

Warranty

Second

thru Fifth Year

-

major refrigeration

components:

After the first

year

and through

the

fifth

year

after the

date

of original

retail

purchase

Maytag will

repair

or replace,

at

its

option, f ree

of

charge to the

owner for

parts

and labor

any

part

of the

sealed

refrigeration

system

(consisting

ol the

compressor,

evaporator,

condenser,

drier

and

connecting

tubing)

and the

cabinet liner

(exclusive

of the

door liner)

which fails

in normal

home

use. Trrp

charges,

travel

and transportation,

if required,

shall

be the responsibility

of the

owner.

Second

year

-

other

parts:

Other

parts

which

fail

in normal

home

use

during the

second

year

following

date

of original

retail

purchase

will

be

repaired

or replace

free

of charge

for the

part

itsell,

with

the

owner

paying

all

other

costs,

including

labor

and trip

charges.

lce Maker

-

when

purchased

with

the refrigerator

and installed

by the

dealer the

ice

maker

will

be considered

part

of the

ref rigerator

for

warranty

purposes.

This

full

warranty

and the

limited

warranty

apply

only when

the

appliance

is located

in

the

United

States

or

Canada.

LIMITATION

OF LIABILITY

The

warrantor,

Maytag

Company,

shall not

be liable

for

any incidental

or consequential

damages,

including

food

loss.

Some states

do not

allow

the

exclusion

or limitations

of

consequential

damages,

so

the

above

limitations

or

exclusion

may

not apply

to

you.

How

and

Where

to Receive

Warranty

Service

Call

or write the

authorized

Maytag

dealer

from

whom

the

appliance

was

purchased

or the

authorized

service

firm

designated

by

it.

lf

the

owner moves from

the

selling

dealer's

servicing

area

after

purchase,

call

or write

any

authorized

Maytag

dealer

or

authorized

service

firm

in

or near the

new

location.

Should

the

owner not

receive

satisfactory

warranty

service from

one

of

the

above, call

or

write

MAyCOR

Appliance

Parts

and

Service

Company,

240

Edwards

Street

S.E.,

Cleveland,

TN

97911,

a division

of Maytag

Corporation,

and

arrangements

for

warranty

service

will

be made.

This

Warranty

gives

you

specific

legal

rights,

and

you

may

also have

other

rights

which

vary from

state to

state.

2-4

MAYTAG

COMPANYO

Newton,

towa

50208

INSTALLATION

INSTRUCTIONS

ELECTRICAL

REQUI REM

ENTS

OBSERVE ALL NATIONAL ELECTRICAL

CODES AND

LOCAL

CODES

&

ORDINANCES ELECTRICAL

SERVICE - 120 VOLTS,

60 Hz

ONLY

A 120 volt,

60 Hz, 15 ampere fused

electrical supply is required.

An

individual

branch

(or

separate

circuit serving only this

appliance

is

recommended.)

DO

NOT USE

EXTENSION

CORD unless it meets

all

requirements

as outlined for

grounding,

polarizing

(3-wire)

and

capacity. Wire

size should be

at

least No. 14.

BEFORE PLUGGING

lN POWER

CORD, OPERATING

OR TESTING,

Follow

grounding

instructions

in

Grounding

Section.

GROUNDING . 120

VOLTS, 60

HZ

IMPORTANT

SAFETY PRECAUTIONS

WARNING - To

prevent

unnecessary risk

of fire, electrical

shock

or

personal

injury,

all

wiring

and

grounding

must

be done

in

accordance

with National

Electrical

Code and local

codes

and

ordinances. lt is the

personal

responsibility

and obligation

of the appliance

owner to

provide

adequate electrical

service for this

appliance.

ELECTRICAL

GROUTVD 'S REQUIRED

ON THIS

APPLIANCE

GROUNDING INSTRUCTIONS

This

appliance is

equipped with

a

power

supply

cord having

a 3-prong

grounding

plug.

For

your

safety, this cord must

be

plugged

into

a mating

3

prong

type wall

receptacle

which is

properly

wired,

grounded

and

polarized.

lf

a mating wall

receptacle

is not

available.

Contact

a

qualified

electrician

to

have the wall receptacle

replaced.

lf

there is

any

question,

local

building

off

icials

or

electrical

utility should

be

consulted.

DO NOT

UNDER ANY

CIRCUMSTANCES,

REMOVE THE

ROUND

GROUNDING

PRONG FROM

POWER

SUPPLY

CORD.

2-5

UNCRATING

1. Lay

appliance on back.

2. Remove

bottom cap

by cutting

band

and

pulling

cap

away.

3.

Remove crate base by

removing

four

(4)

bolts.

4. Discard crate base.

5. Return appliance

to an upright

position

6.

Lift carton up and off.

NOTE:

lf

using a

hand

truck to move

refrigerator.

NEVER PLACE STRAP

OVER THE

HANDLES. Avoid

overtightening strap

to

prevent

misaligning doors.

7.

Remove

all exterior and

interior tape,

carefully

retain

old

tape. Make a small

pad

of this tape

to

pick

off any

remaining tape residues. This will

eliminate

the need to use dangerous

solvents

of

any

kind.

8. Remove and discard cantilever shelf packing

clips located

just

above each

shelf where

it hooks

onto

the frame.

To remove

a clip,

wiggle

sideways and

pull

straight out.

NOTE: Should it be necessary to remove the doors

for installation

purposes,

see

page

2-9.

ln

addition,

hinges may

be

removed if necessary. Care MUST be taken since the water and electrical lines will

need

to be disconnected

on those

models with ice and water fountains. Both can

be disconnected

just

behind the

hinge.

LOCATION

1. Select a

location

for

your

new

ref rigerator

away

f rom

any

heat

sources.

Allow a free

flow of air

through the front base

grille.

2. Your model

should

NOT

be installed

where the temperature will

go

below

55"F because

if

will not

run

frequently

enough to maintain

proper

temperature in the freezer.

3.

For

ease of

installation,

you

should

leave

a space of about one-half inch

between

your

ref rigerator and

adjacent walls or cabinets.

WATER

CONNECTION

For those models without an lce Maker.

Most models are designed so an

automatic lce Maker

can

be easily

installed. The lce Maker kits

come

with installation instructions. water connection instructions and

other

information

concerning the ice maker operation. For

those models

with lce

Maker.

To

locate water valve:

For

the 22 and 24 cubic foot models,

remove

the center screw from the right

end of the

black

fiber

panel

that covers

the

machine

compartment with a socket driver, and fold back the etch marked flap. Save the screw for later reinstallation

as

this flap

is required for

proper

and safe

operation of the refrigerator.

For

the 20 cubic foot model. follow above

sequence for the left

side of

the fiber

panel. To connect

water:

All installations

must be in accordance

with local

plumbing

code requirements.

2-6

Copper

tubing

(

114" O.D.)

and

saddle

valve can

be

purchased

f rom

local

hardware

stores.

Sweat

or

f lare

connection

can be

used

instead

of

the

compression

union,

if desired.

4.

Do

not use

plastic

tubing or

plastic

fittings

because

the connection

between

the

water supply

and

the

refrigerator

water

valve inlet

is under

constant

pressure.

Also,

certain

types of

plastic

tubing

may

become

brittle

with

age and

crack,

resulting

in water

leakage.

NOTE:

When using

unfiltered

well

water,

it is advisable

to

use

a

filter in

the water

supply

line.

This

eliminates

all

possibility

of small

particles

from entering

the water

valve.

Find

a 318" to

1" vertical COLD

water

pipe

near

the ref rigerator.

Water

pressure

must be

between

20 and

12Q

P.S.l.

Vertical

pipe

is

preferable,

but

a

horizontal

pipe

will

work.

lf

a

horizontal

pipe

is used,

install the

saddle

valve on the

top

or

the side

of

the

pipe,

not on the bottom.

Install

the saddle

valve according

to

manufacturer's

instructions

included

with the

valve.

Route the copper

tubing

through

the

floor, wall or

sink cabinet

to the saddle

valve location.

Form

the excess

tubing

into a

large loop.

This allows

movement

for

the

refrigerator

without disconnecting

the

tubing.

Other

routing

methods

are

shown

on

page

2-8.

Slide

the

brass

nut and

sleeve

onto

the

114" copper

tubing.

Insert the end

of

the

tubing into

the saddle

valve as

far

as it

will

go

and

tighten

the nut with

an

adjustable

wrench.

Turn off

the saddle

valve.

COLD WATER

-

LINE

PIPE

CLAMPS

BRASS SLEEVE

1.

MANUAL

SHUT.OFF

VALVE

Turn ON

the

main water supply

and

flush

out

the

water

pipe

until

water

runs clear.

At

the same

time, check

for leaks at

the

saddle

valve, After

the

water has cleared,

flush

out

the tubing

from

the saddle

valve to

the water

valve

into a bucket

by turning

the

saddle

valve on. When

the

water has

cleared,

turn off the saddle

valve.

Connect

the water line

from the saddle

valve

to the water

valve as shown

in

steps

4 and 5.

(Also

see drawing

in

step 3.)

Insert

the water

line into the

compression union

as far as

it will

go.

Tighten each

brass

nut with one

wrench

on

the

nut

and

the other

wrench

on the compression

union.

Rotate water line

to vertical. Secure

water

supply

line clamp

with one

type

screw.

Tighten

hose nut with

pliers.

Turn

on

saddle

valve. Tighten any

connections

that

leak.

Close

the hinged access

panel

and

secure with screw.

*

/

"rorrrut

Htt**

5.

2.

3.

7.

8.

2-7

I' Plug

in

the

power

cord

and

push

the

refrigerator

to the

walt,

arranging

the

copper

tubing

so

that it

does

not

vibrate

against

the

back

of the

refrigerator

or

against

the

wall.

IMPORTANT:

Because

the

refrigerator

and ice

maker

are warm.

tt

may

take

up

to

12

hours

before

the

ice maker

produces

the

first

suppty

of ice

cubes.

^-

In

The

Crawl

Space

Under

The

Hdme

Through

The

Wall

To The

Utility

Room

Cold

Water

piDe

lf the

floor

is

not level

and

it

is

necessary

to

raise

the

rear

of the

cabinet,

we

suggest

rolling

the

rear

wheels

on

to

a

piece

of

plywood

or

other

shim

material.

Under

The

Sink

To

The

Cold

Water

pipe

LEVELING

To

enhance

its

appearance

and

maintain

efficient

performance,

your

refrigerator

should

be

level.

The

front

wheels

were

adjusted

at

the

iactory

so

th;

cabinet

would

be levet.

Ho.wever,

jarring

in

transit,

or

standing

the

refrigerator

on

an

uneven

floor

may

cause

the

cabinet

to

appear

unlevel.

lf

leveling

is

necessary,

remove

the

base

grille

and

adjust

the

wheels

with

a

screwdriver

as

shown

below.

Tilt

refrigerator

back

jusi

enough

to

illow

easy

turning

of the

adjusting

screws.

On Top

Mount

models

only,

turn

clockwise

to

raise

the

cabinet

corner

and

counterclockwise

to

lower

cabinet

corner.

On

Side-by-Side

models

the

procedure

is

just

reversed.

Also,

lock

front

wheels

to

secure

refrigerator.

Through

The Floor

To

Basement

Cold

Water Pipe

2-8

REVERSING

DOORS

Top Mount

Models

Only

Door reversal

is NOT

possible

on

those

models that

have a built-in

ice and water

lountain.

However,

if door

removal

becomes

necessary

please

see

the note

in

Step

9.

Unplug

Refrigerator.

lf

unit

is

in

use,

remove food

from fresh

food compartment

and

freezer com

partment.

Removing doors.

NOTE:

Taping doors shut

prior

to

physically

removing them

may

prevent

unnecessary

damage.

1. Remove hinge cover

from top of

treezer door by

removing screw.

2. Remove

three

(3)

screws

from hinge.

&

Lift

hinge

off of cabinet.

Open

freezer

door,

pivot

and

lift door

off of center

hinge

pin.

NOTE: Keep track at all

times the

position

of all spacers and

pads

when

removing them from doors. Remove

center

using

a 5116"

wrench.

Open

refrigerator door and

lift

door off

lower hinge

and

place

to the side

for now.

Remove center

hinge by

removing

two

(2)

screws

using Torx-T27 drive.

Remove screws

from opposite side

of

the cabinet.

Flip

center

hinge

over

and reinstall on

left

side

of cabinet using

the

same

screws

you

just

removed from the

center

hinge. Reinstall screws that

were used on

the

opposite

side.

NOTE: lf door

removal is necessary

on those models with an ice and

water

fountain,

use

care in removing the

water

and

electrical lines

from the

hinge by

pulling

the water line

first

followed by

the

electrical

wires,

6.

L

7.

9.

4.

2-9

Reversing

lreezer

door.

10. Take freezer

door

and

remove

screw

from

trim cap

on the top

of the

door.

11.

Slide black trim

off

of

the

metal handle

bracket.

$tide Black

Trim

Off

Bracket

12.

Remove

screw

holding

metal handle

bracket

at

the

top

of the

door.

13.

Remove

two

(2)

screws holding

handle

to

bottom

of door.

Handle

and trim

should

be completely

removed

from freezer

door.

Pry

plugs

on left

side

on top

off with

a

flat

blade

screwdriver,

taking

care not

to

damage

them

or the

door.

Put

plugs

into

exposed

holes

on the

right

hand

side of treezer

door. These

would

be the

holes

you

just

removed

the

screws

from.

Remove

door

stop

on

bottom edge

of

the

hinge

side

and reinstall

on

opposite

side in

the

original handle

holes

Now

move

handle

and all

parts

to the

opposite

end

of the freezer

door

and

reinstall

by

reversing

steps

above.

NOTE:

Make

sure

spacer

pad

is in

proper position.

Slide black

trim

over

metal

bracket

and black

gasket

which

is

positioned

under

metal

bracket.

Reversing

refrigerator

door.

Remove

grille

f rom

bottom

of

refrigerator

by simply

grasping

both

ends

and

pulling

forward.

14.

15.

16.

17.

18.

2-10

19. With

grille

now removed,

you

have

access to the

bottom

hinge. Remove

screw

from the

side of the hinge cover.

20. From the

opposite side of cabinet,

remove

screw, removing trim

cap.

21. Remove

bottom hinge

using aTorx-T?7

drive

and move to the

opposite side of

cabinet and reinstall

using

the

same

screws.

22. Reinstall

the trim

cap and hinge

cover

on the

opposite sides.

23. Now take refrigerator

door and remove

screw from the

trim cap located

on the

bottom

of

the

door,

24. Slide

black trim

off

metal

door

bracket.

25.

Remove

screw holding metal

bracket

at

the

bottom

of the door,

and the

screw located in the

center of the

door

just

underneath the

handle.

26. Remove

two

(2)

screws holding handle

to top

of door.

Now remove the

plugs

from

opposite

side of

door

taking

the

same caution in

removal

you

did for the treezer

door.

Remove

two

(2)

screws securing

door

stop. Reinstall on the

opposite side.

27.

28.

2-11

29. Just as

you

did above for the

treezer

door, move

all of the

handle

and trim

parts

to the

opposite side of the

door and

reinstall.

This

is

done by reversing

the

steps

above.

NOTE:

Care

must

once

again be

taken

to make

sure

all

spacer

pads

are

returned

to

their

proper position.

30. Reinstall

plugs

into

screw

holes

exposed

on the right

hand

side

of the

door.

31. Reinstall the refrigerator

door.

Lower refrigerator

door

so socket on bottom

fits

onto the

on bottom

hinge

bracket.

Be

sure washer is in

place.

Tilt

door towards

cabinet

and

gently

push

door

under

center

hinge

bracket

and align with the hole

in the

center

hinge

bracket.

Reinstall hinge

with

5116"

socket and rachet

so it extends

through

hole

in

center

hinge

bracket

and into

bracket on top

of refrigerator

door.

32. Reinstall

the freezer

door. Lower treezer

door

so socket

on bottom

f its

onto the center

hinge

pin.

Be

sure washer is

in

place.

Tilt

door towards

cabinet, lifting

the

top hinge

so the

fits

into the

socket

on top of the

door.

Tighten

the top hinge

screws

after supporting

the

door

on the handle

side and

aligning

so

the

gap

between the

door is

even

all across the

front.

2-12

1.

DOOR REMOVAL

Side-By-Side

Models

Only

Unplug

Refrigerator.

lf unit

is in

use,

remove

food from

the f resh

food

com

partment

and

f reezer compartment.

Removing

Freezer Door

Remove

grille

from bottom

of

refrigerator by

pulling

out at bottom

of

grille

to disengage.

From behind

the hinge on

the treezer

side, disconnect

water line and

electrical

connection

at the connector

plug

if the

unit

has an

ice

and

water

fountain.

Remove hinge cover

f rom top of

lreezer door hinge by removing screw.

Remove three

(3)

screws

from hinge.

With assistance from someone else

to

support

the treezer door,

remove

bottom hinge by

first removing screw

from side of

hinge

cover

and remove

cover.

Pull

wires

and

water line through

opening

in refrigerator

frame.

7. Remove bottom

hinge using a

Torx-I27 drive.

lf necessary.

Tilt

lreezer door forward

and

pull

away. NOTE:

Use

extreme care as

the hinge

will remain attached

to the water line

and wires on

those

units

having an

ice

and water fountain.

Removing Refrigerator

Door

1. Remove hinge

cover f rom

top

of

refrigerator door

hinge by removing

screw. Remove

three

(3)

screws

from

hinge.

Tilt refrigerator door

forward

and

lift

door off of

bottom hinge.

Remove bottom hinge by

f irst

removing

screw

from side of hinge

cover and remove cover. Remove bottom

hinge using a

Torx-f27 drive.

lf necessary.

To reinstall

both

doors

just

reverse steps

above. Be sure

to

properly

realign both

doors so

they will be even

with

each

other

and easy

to

open and

close.

6.

4.

5.

8.

3.

4.

2.

3.

2-13

OPERATION

Top Mount Models

Setting Controls These

models have two

controls. One

for

regulating the

temperature in

the fresh

food

compartment and one for the

freezer. The fresh food

compartment

and the treezer

compartment controls

are

located

at the top front

of the fresh food

compartment.

Turn the

refrigerator control to the number

"5"

and

the

freezer control to the

letter

"E"

to start the

refrigerator. Allow refrigerator

to run

about 8 to 12 hours

before loading

with food.

In

a day

or so, if the consumer

decides that

one

or both compartments

should

be colder or

warmer,

adjust the control(s)

as instructed

in the

charts

below.

To

start:

Set refrigerator

control

on

"5"

Set

freezer

control

on

"E".

Refrigerator

too WARM:

Turn

refrigerator

control to next

higher

number.

Refrigerator

too

COLD:

Turn

refrigerator

control to

next lower

number.

Freezer

too

WARM:

Turn

freezer control

to next higher

letter.

Freezer

too

COLD:

Turn

freezer control

to next

lower letter.

Refrigerator

OFF:

Set ref

rigerator control

on

OFF.

2-14

USE OF CONTROLS f

MPORTANT: Except when

starting, do

not

change

either control more

than one number

at

a

time. ALLOW 24

HOURS FOR TEMPERATURE

TO

STABILIZE BEFORE RESETNNG.

Changing either control will have

some effect on the temperature

of the other

compartment.

The number

"9"

lreezer control

setting

is recommended

for

short term

use ONLY.

Please note:

The refrigerator may run for

several

hours

when first

started

up. This is

normal

and shouldn't

be cause for alarm.

Warm

Cabinet Surfaces

At

times, the front

surfaces of the refrigerator

cabinet

may be warm

to the touch.

This is a

normal function

of the refrigerator,

This feature

prevents

moisture

from

condensing

on

the

outside of the refrigerator

during

humid

weather.

This condition

may

be

noticeable

when

you

first

start the refrigerator,

during

hot weather,

and excessive

or

lenghty

door openings.

Energy

Saver

Control

During

extremely

huinid weather,

moisture

has a tendency

to collect

on objects that

are

cooler than the

surrounding

air,

just

as droplets

of water accumulate

on

a

glass

containing

an iced drink

during a hot

summer day.

The refrigerator

is

built

to

exacting

standards and,

therefore,

contains

condensate

driers

that

are designed to

minimize

any collection

of

moisture

on

the

cabinet

external surface

during

periods

of high

humidity.

lf the

consumer lives

in

an area of low

humidity, or

one in which

the humidity

is

considerably lower

during certain

seasons,

you

can

set the switch

to the

"Saves

Energy"

position

which

will

disconnect the

condensate

driers

and

decrease the

amount

of electricity

you

use.

In

areas of relatively

high humidity,

set the

switch to the

"Reduces

Exterior

Moisture"

position

which

will

minimize

any collection

of moisture

on

the

outside

surface

of the

cabinet.

The indicator

light will

be ON with

the

switch

in

this

position.

Side-By-Side

Models

Setting

Controls

The

refrigerator

has two

controls.

One for regulating

the temperature

in

the refrigerator

compartment

and

one for the freezer

compartment.

Both controls

are located

at the

upper

rear

of

the

refrigerator

compartment,

just

below the light

shield.

2-15

To

start

the refrigerator,

"6"

. Let

the

relfrigerator

set

the refrigerator

run at least 8

to 12

control on

"D"

and

set

the

hours before loading it with

freezer control food.

ln a day or so, if the consumer

warmer,

adjust

the

controls(s)

decides

that one

or both compartments should be colder

or

as

instructed in

the charts below,

To

start: Set refrigerator control

on

"D".

Set f reezer control

on

"6".

Refrigerator too WARM:

Turn refrigerator control

to

next higher

letter.

Refrigerator too

COLD:

Turn refrigerator control to next lower letter.

Freezer

too WARM:

Turn

freezer

control to

Freezer too

COLD.

Turn freezer control to next lower number.

Refrigerator

OFF:

Set refrigerator

control

on OFF.

2-16

USE

OF CONTROLS

IMPORTANT:

Except when

starting, DO NOT

change either

control more than

one letter

or

one number

at a time. Allow 24

hours tor temperature

to

stabilize betore resetting.

To turn

off

the

refrigerator,

set the refrigerator

control

on OFF.

Warm

Cabinet Surfaces

At times,

the front

surfaces of the refrigerator

cabinet may

be

warm

to the touch.

This is

a

normal

function

of

the

refrigerator. This

feature

prevents

moisture from

condensing

on the

outside

of

the refrigerator

during

humid

weather.

This condition

may

be

noticeable

when

you

first start the

refrigerator,

during hot weather,

and excessive

or lengthy

door openings.

2-17

-l

MITYTAG

SECTION 3

SERVICE

PROCEDURES

GENERAL INFORMATION

TOP MOUNT

MODELS

FORCED AIR

SYSTEMS

On all forced air models,

an air circulating fan

draws cold

air

from

around the evaporator

and directs it

to

the fresh food

and treezer

compartments. A

carefully measured amount

of

chilled

air

is

directed into the fresh food

compartment

through a

baffle

to

maintain the de-

sired fresh food

compartment temperature.

The

greater

part

of chilled air is directed into

the freezer

compartment to maintain

freezer temperature.

Forced

air models use a fan

cooled

condenser. The

evaporator

is

automatically

defrosted

every six or eight hours

of

compressor run time

depending

on

the

model. Defrosting

is

accomplished by

a defrost

heater

activated by a timer.

The

accumulated moisture is

drained into

a defrost

pan

located

in the compressor

area of the

cabinet.

REFRIGERATION

CYCLE

@l

HEATEXCHANGER

-

---

-

cAptLLARy

I

ols - rrex

pREssuRE

ffi

rrouro-xrot

pREssuRE

CONDE NSER

3-1

EVAPORATION

OF

ICE

CUBES

(rop

Mount

& side-By-side

Moders)

Since

ice

cubes have a moisture

vapor

pressure

above them,

the vapor

is

constantly

being

picked

up

in the

dry air stream

and deposited

on

the

evaporator.

This

physical

change

known

as

"sublimation",

is the

changing

of a solid to

a vapor

without

going

through liquid

state. In a forced

air treezer

compartment,

this

action will

be readily

noticed

by a customer

who

does

not

use ice cubes

with regularity.

AIR

FLOW. FORCED

AIR

SYSTEMS

Top

Mount Models

The

balance

between the

air flow

into the fresh

food

and Ireezer

compartments

is

an im-

portant

factor in

maintaining

proper

compartment

temperatures

in a forced

air

refrigeration

system.

A

baffle is used

to regulate

the

amount of

chilled

air directed

into

the fresh

food

compartment.

lf

a colder treezer

compartment temperature

is

desired,

the

baffle is

adjusted

so that less

air is directed

into the

fresh food

compartment.

This

causes

the

compressor

to

run longer

since the

compressor thermostat

sensing

element is

located

in the fresh

food

compartment. Cold

air is

drawn through

the fin

and tube

evaporator

and

into

the

fan.

A

portion

of the

air

is

deflected

into the f

resh food

compartment

where

it

absorbs heat

and returns

to the

f in

and

tube

evaporator

through

ports

in the

top

of the fresh

food

compartment

Most

of the

air

moving

through the

fin

and tube

evaporator,

however,

is

blown through

the

freezer

air tun-

nel

and

circulated

throughout

the freezer

compartment

and back

across

the fin

and tube

evaporator

where

it starts

another

cycle.

-r'

-

-l \\

3-2

SIDE-BY-SIDE

MODELS

Side-By-Side

models

are

manufactured with a single evaporator.

They are automatically

defrosted by a

radiant heater working in conjunction with an

electric

timer.

They have a fan cooled condenser

with the fan

dissipating condenser heat and aiding in the

evaporation of defrost water that collects in

the

defrost

pan.

A forced

air system

is

used

to distribute

chilled air

throughout the

lreezer and fresh food

compartments

thus

utilizing a single evaporator. A

temperature

control and baffle

system

are

used

to

control

the amount of chilled air distributed to

each compartment, Both of the

controls are

located in the fresh food compartment. The temperature

control is used to en-

ergize

the

compressor.

The

baffle

mechanism regulates the flow

of chilled air

between

the

freezer compartment

and

the fresh food compartment.

The drawing illustrates the air flow system typical to the

Side-By-Side

models.

"i----

I I

L--'

1"-'

I I

I I rFR

L

:.

:IGAS-HIGH

PRESSURE

liiEJ

L|OUD-H|GH PRESSURE

YODER

CONDT

3-3

AIR

FLOW

Side-By-Side

Models

The evaporator is mounted behind the

cover at

the rear

of

the freezer

compart-

ment. A circulating fan is mounted near

the top of the compartment, directly

above

the

evaporator. This fan

draws air up over

the evaporator and discharges it

against

a dispersing shield, mounted in front

of

the fan. As the

air hits the dispersing

shield, the air is deflected in three

di-

rections. The

cold air circulates to the

bottom of the freezer

compartment,

ab-

sorbing heat and moisture from

the

pack-

ages

stored on the shelves. lt is

then

drawn up into the

evaporator atea to

again

repeat the

cycle,

DISPERSING SHIELD

Because

the evaporator

is the

coldest

surface in the

treezer,

all moisture in the

compartment forms

on

its

surfaces.

After

eight hours

of

accumulated

compressor

running

time, the

evaporator

is automat-

ically

defrosted

and the water

drains into

a

tray

in the machine

compartment.

The

amount

of air being moved in each

direction

in

the drawing is broken

down

as follows:

1. The

greatest

volume

of air is

blown out

the

opening

at the bottom of the

dis-

persing

shielc.

2.

Part

of

the

chilled air is

blown over the

top

of

the

dispersing

shield.

3. A

small

portion

of the chilled

air

is

forced through

a side

opening into the

ref ri

gerator

com

partment.

The

air being moved in

each direction is

depending

somewhat

on the setting of the

treezer

baffle control, For

example: lf the

baffle control is turned

to the

closed

posi-

tion

(coldest), a greater

volume

of chilled

air

will

circulate throughout

the treezer

compartment.

However,

because the

sensing

element

that

controls the

com-

pressor

operation is located

in the refri-

gerator

compartment, the

compressor will

operate for

a longer

period

of time, re-

sulting in colder lreezer

temperatures

and

the

desired fresh food

compartment tem-

peratures.

Conversely, if the

treezer

baffle

is

in the

open

position,

more

air will flow

into

the refrigerator

compartment,

thus

satisfyinQ the

sensing

element sooner

and

reducing

the compressor

run time consid-

erably.

This naturally

results in warmer

freezer temperatures.

The refrigerator

compartment is

cooled by

the

air

passing

through

the freezer

baffle

control

and then circulating throughout

the

refrigerator

compartment. Return

air from

this compartment

is drawn

through an

opening near

the bottom, where

it again

passes

through the

evaporator coil to

start

the

cycle again.

3-4

I-.l

CHECKING

OPERATIOT\f

-

(A'

Moders)

The

following

general

information

ex-

plains

several

method for

checking oper-

ation of the refrigeration

system. This

information

applies to all systems

covered

in

this manual.

The

correct operation

of a refrigeration

system is

dependent upon the

proper

functioning

of each of the

parts

comprising

the system. lf the

system does

not operate

properly

(long

run

periods,

warmer than

normal

temperatures),

the trouble

may be

caused

by one of the following

conditions.

RESTRICTED

CAPILLARY

TUBE

The

opening

of a capillary

tube is

about

the

same

diameter as the

period

at the

end of this

sentence. This

should indicate

that

it doesn't

take much

to restrict

this

tube. lt

should also tell

you

to

use care

when

any service

procedures

involve

moving

or

touching

the

capillary

tube. A

very

slight

kink

can

cause

a complete re-

striction

of

the tube.

Restrictions

of the

capillary tube

may be

caused

by:

(1)

moisture

freeze-up,

(2)

tor-

eign

particles

lodged

in the tube,

or

(3)

a

bend

or

kink.

lf the

capillary tube

is restricted,

there

will

be a noticeable

lack of frost

on

all of the

cooling

surfaces; the

compressor

may

op-

erate for

a short

period

of time

and then

cycle

on the

overload. Because

some mo-

dels can hold the

entire

charge in

the

condenser,

the compressor

may run con-

tinuously

and

definite

vacuum

will be no-

ticed

in the low

side.

When moisture

freeze-up

causes

a restriction,

it usually

occurs

at the

outlet

end of the

capillary

tube.

Normally,

a frost

build-up

can

be

detected in

this

area,

but

insulation

wrapped

around the

tubing may

conceal

or limit the

amount

of frost

accumulation.

Expose

the discharge

end of the capillary

and apply heat

at this

point.

lf there

is

enough head

pressure,

and if the

re-

striction

is caused

by moisture

freeze-up,

you

will

be able to

hear a

gurgling

noise

as the

heat releases

the ref

rigerant

through the

tubing.

It is

possible

that this

moisture will

be ab-

sorbed

by the

drier and remedy the

trou-

ble. However, if the

freeze-up recurs,

you

must replace

the drier.

A kink in

the capillary

tube will reveal

about the

same symptom

as a moisture

freeze-up

except for the

accumulation

of

frost.

Check the

entire length

of

the

capil-

lary

tube and, if

possible,

straighten the

kink to

relieve the

restrictions.

Check the

unit operation to

see if

you

have helped

the

situation. lf the trouble

persists,

re-

place

the

defective

part.

lf

the freeze-up

condition

does not

exist

and

there

is

not a kink,

you

can

assume

that

a foreign

particle

is

causing the re-

strictions

--

the

only remedy

in this

case

is

to replace

the restricted

part.

PARTIAL

RESTRICTION

IN LOW

SIDE

TUBING

Bent tubing,

foreign

matter,

or moisture in

the

system may

cause

a

partial

restriction

in

the low

side tubing. This

is usually

in-

dicated

by

frost-free

tubing

between the

restriction

and the

capillary

tube

and by

f rost-covered

tubing

between

the re-

striction

and

the

suction line.

The

re-

striction

acts like

a second

capillary tube,

increasing

the

pressure

ahead

of

it

(warming)

and

decreasing the

pressure

beyond it

(cooling).

To confirm

the

exist-

ence

of a restriction

in the low

side tubing,

perform

operational

pressure

checks.

3-5

SLOW

LEAK IN

SYSTEM

On forced air

models, long run time will

be

noticed during the

early

stages of a

leak. As the refrigerant

continues

to es-

cape, both compartments

will

gradually

warm up and the compressor will run

continuously.

The freezer will

probably

warm

up

first.

INCORRECT REFRIGERANT CHARGE

The

sealed unit

may

have too much refri-

gerant

(overcharged

system) or too little

refrigerant

(undercharged

system). The

following

paragraphs

will inform

you

on

how to recognize

a

system

with these

de-

fects. An

overcharged system may

have a frost

back condition

appearing outside the

in-

sulation

sleeve on the

suction line

at

the

cabinet

rear.

When the

compressor

stops,

the frost

melts

and drips on the floor.

A

heat

exchanger

separation will

also cause

this

symptom.

An

undercharged

system depending

on

the

degree

of undercharge,

will

operate

with temperatures

above normal

and the

compressor

run time

will be increased.

The

greater

the

undercharge,

the higher

the temperature

will

be

and

the longer

the

run

time.

An

undercharged

system must

be

purged,

evacuated,

and recharged

with the

proper

amount

of refrigerant.

Before recharging,

however,

test for

refrigerant leaks.

DEFECTIVE

COMPRESSOR

A

compressor which is not

pumping

ade-

quately

will not

cool effectively.

All cool-

ing

surfaces

may be covered

with a thin

film

of

frost,

but the

temperature will

not

descend to the

cut-out temperature

of the

control, even

with continuous

running

of

the

compressor.

Because these

symptoms

are similar to

a

refrigerant leak, it

is

advisable to thor-

oughly leak

test

at

this

point.

lf no leak

is

indicated,

install

gauges

and check the

operating

pressures.

lf the

high side

pres-

sures are lower

than those

specified,

and

low side

pressures

are higher than

speci-

fied,

suspicions of

an inefficient

compres-

sor will

be confirmed

and the compressor

must be replaced.

PRESSURE

UNLOADING IN

SYSTEM

The

compressor may

stall

and cycle on

the

overload

protector

if

an attempt is

made

to restart the

unit immediately

after

it has

stopped. This

is

because

the refri-

gerant

pressure

is

high

on the condenser

side and low on the

evaporator

side. When

the

compressor

stops running, the liquid

slowly

passes

through

the capillary tube

and the

pressures

are said to be

"unload-

ing". Pressure

unloading in the system

may

take from 3 to

6 minutes.

PULL

DOWN

OVERLOAD

lf the

cabinet

compartments

are

warm

when

the

compressor starts, the

"pull

down" may

temporarily

overheat the

compressor

and cause

cycling on the ov-

erload

protector.

3-6

LEAK TESTING

The

following

general

information

ex-

plains

several methods

of checking the

refrigeration

system

for

leaks. This infor-

mation

applies to

all systems covered in

this

manual.

lf there

is an undercharge

of

refrigerant

and the system has

not

been recently

opened, there is

probably

a leak in the

system. In that

case, it would

be only a

temporary

solution to

add

ref

rigerant

without

first locating

and repairing

the

leak

since

adding refrigerant

will not

per-

manently

correct the

difficulty.

The leak

must

be

located

and repaired

if

possible,

after which

the

entire system must

be

re-

charged

with the

proper

amount of refri-

gerant.

Whenever

a new

charge

of

refrigerant

is

added, it is

necessary

to in-

stall a new

drier.

Any

leak, regardless

of its

size, must

be

located

before

you

can

determine the

op-

erative

status

of the

system

components.

Do

not replace

a

component

because the

system is

short

of refrigerant

unless

a

non-repairable

leak

is found.

lf

your

analysis

indicates

a leak, find

it

before

opening the

system.

You

are more

likely

to

pinpoint

the

leak

before

dis-

charging

than if the

surrounding

air is

contaminated

with ref

rigerant

f rom

a

newly

opened

system.

The

presence

of oil

around a tubing

joint

usually indicates

a leak,

but don't let this

be the determining

factor.

Always

check

the area with

a

leak

detector

to make

sure.

To simplify leak

detection, keep

the sys-

tem

pressurized

to

a minimum

of 75 P.S.l.

This is

easily

accomplished

for high

side

testing

by merely running

the

compressor.

To

pressurize

the low

side,

allow the en-

tire

system to

warm

up to room temper-

ature. Often

enough

refrigerant

may have

es-

caped to make it

impossible

to raise

the

pressure

enough to leak

test effectively.

In

cases of this

nature,

clamp a

piercing

valve to the

compressor

process

tube and

add enough refrigerant

to conduct the

test.

Leak

testing with

a Halide

torch is consid-

ered

satisfactory in

most

cases, but for

more

accurate testing,

we recommend

the

use

of a Dielectric

Differential Leak

De-

tector. This

transistorized

model reduces

the

guesswork

in leak

testing

because it is

more

sensitive,

faster responding,

and

capable

of detecting a leak

even

though

the

surrounding

air is

contaminated.

The

leak

gun provides

an audible indication

of

a

refrigerant

leak.

3-7

LEAK

TESTING

YODER

LOOP

The

following

general

information

ex-

plains

several

methods

used

in leak

test-

ing the

yoder

loop.

The

yoder

loop is

routed

in the front

cabi-

net

flange at

the top and

sides.

The

yoder

condenser

loop warms

the front

of

the ca-

binet

and

thus

reduces

the formation

of

condensation

on

the cabinet

front.

By

transferring

heat

to the cabinet

front, the

loop helps cool

the condensing

system.

Since

the

yoder

condenser

loop cannot

be

reached

for leak

testing, it

is impossible

to

check

in the normal

manner.

Instead,

it

must be

disconnected

from

the system

and

checked

separately.

NOTE: BE SURE

A LEAK IS

NOT PRESENT

IN ANY EXTERNAL

TUBING OR

JOINT

BE-

FORE

PERFORMING

THE

FOLLOWING

TESTS.

USING

PRESSURE

METHOD

To test for leaks

in the

yoder

loop

tubing,

a

pressurized

test using

the

following

equipment

is required,

A.

An access

fitting.

B. A cylinder

of dry

nitrogen.

C. Pressure

regulator.

D. One

gauge.

E. Line valve

and tubing.

The

access

fitting should

be

prepared

as

follows:

1. Solder

the

copper tubing

(C)

to the

adaptor

(A).

2. Assemble

all

parts

to

the

"brass

tee"

(B)

using

a sealant

such

as

"Leak

Lock"

to assure a

leak-tight

joint.

3. Seal

the end of

the copper

tube bY

crimping

and silver-soldering.

SOLDER

ADAPTER

TO

N,IALE

PIPE

@

1

/8" MIPT

x

1/4"

filSAE

WITH SCHFADER

VALVE

VALVECAP

@

\

A\\

\y\\

tf

trfft

4.5.Apply

200 lbs.

pressure

at

the

Schr.ader

valve and

leak test

the ac-

cess fitting

with a soap

solution.

lf

there

is no leak,

cut the crimped

end

off

the

tube

(C).

PRESSURE REGULATOR

LINE VALVE

.\

TESTING

YODER

LOOP

Top Mount Models

1. Disconnect unit

f rom

power

source.

2. Install a service

valve on the

process

tube

and vent

the refrigerant

outside.

GAUGES

3-8

3. Unsolder

the

yoder

loop

tubing

at

points

"A"

and

"8".

Top

Mount

Crimp and solder the

yoder

tubing at

point

"A".

Solder the

special access

fitting

to

tube removed

at

point

"8".

Pressurize the

system

to

250 lbs. with

the

dry nitrogen. Leak test the

joint,

using a soap solution. Check the

pressure

gauge.

lf the

pres-

sure decreases, a leak

exists. lt may

be necessary to

allow up to 24 hours

to

pass

in order to

determine this. lf

a

leak

does

not

exist, reconnect the tub-

ing,

evacuate and recharge

the sys-

tem. lf the

yoder

loop is

leaking, a

special

kit can

be

ordered

for installing a re-

sistance heater wire.

Complete in-

structions are included with the

kit. lt

is

not necessary to leave

the refriger-

ator inoperative while

you

order the

kit. You should reconnect

the system

excluding the

yoder

loop as follows:

Install a new

drier. lnstead

of connect-

ing it

to

point

"A",

connect it to

point

"B".

This will

exclude the

yoder

loop

from the refrigerant

system.

9. Evacuate

and recharge the system.

10.

Leak test

all

tubing

joints

and test run

the refrigerator.

11. Pinch

the

process

tube

and cut the

service valve

off

the tubing.

Solder the

joint

and check

for leaks.

TESTING

YODER

LOOP

Side-By-Side Models

1. Disconnect

unit f rom

power

source.

2. Install

a service valve on the

process

tube

and

vent

the refrigerant

outside.

3. Unsolder the

yoder

loop tubing

at

points

"A"

and

"8".

(see

drawing).

4.

Crimp and solder the

yoder

tubing

at

point

"A".

5. Solder the special

access

fitting

to

tube

removed at

point

"8".

6.

Pressurize the

system to 250 lbs.

with

the

dry nitrogen. Leak test the

joint

using a soap

solution.

7. Check the

pressure

gauge.

lf the

pressure

decreases, a leak exists.

lt

may

be

necessary

to

allow up to 24

hours

to

pass

in

order to determine

this.

lf a leak does not

exist, reconnect

the

tubing, evacuate

and recharge the

system.

lf

the

yoder

loop is

leaking, a special

kit

can be ordered for

installing a resistance

heater wire.

Complete instructions

are

included

with the kit. lt is

not necessary

to leave the refrigerant

inoperative

while

you

order the kit. You

should reconnect

the

system

excluding the

yoder

loop.

To

exclude the

yoder

loop,

connect com-

pressor

discharge

line directly to

conden-

ser by connecting the tubing

at

point

"A"

to

point

"8",

Suction Tube

4.

5.

6.

7.

3-9

8.

lnstall

a new drier.

9.

Evacuate

and recharge the

system.

10. Leak test

all

tubing

joints

and test run

the refrigerator.

moved

without disturbing the refrigerant

charge.

When

using

gauges

to check

operating

pressures,

observe these

precautions.

1. Make

sure the

gauges

are

accurately

calibrated.

When not

connected into a

system, the

gauge pointers

should in-

dicate

0

pressure.

lf necessary,

turn

the recalibrating

screw on the

dial un-

til the

pointer

is

at 0.

a. HIGH

SIDE - near

normal

pressure

LOW

SIDE

-

lower

pressure

(pos-

sible vacuum)

WATTAGE

-

lower

than normal

The

evaporator

tube

or other low side

tubing

is

probably

restricted

(kinked

or

blocked with foreign

particle).

This

condition is

usually accompanied

with

a

frost

build-up

on the low

side of the

restriction,

and high

side

pressures

will

not unload

and balance with the

low

side within

the

prescribed

7 to

10

minutes

after the

compressor is

stopped. b,

HIGH SIDE - lower

pressure

LOW SIDE

-

slightly lower

pressure

WATTAGE

-

lower

than normal

These results

usually

indicate a leak

in the high

side of

the

system. Both

gauges

will

show

progressively

less

pressure

as more refrigerant

escapes.

c. HIGH

SIDE - much higher

pressure

LOW

SIDE - slightly lower

pressure

WATTAGE

-

higher

than normal

These

gauge

readings

usually

indicate

a

leak

in the low

side

of

the

system.

High

side

pressures

will

continually

increase

since air

drawn in through

the

leak collects

and becomes trapped

in

the high

side tubing. The

low side

gauge

may

show a

slight

pressure

be-

cause

of the

air being drawn in

through

the leak.

Process Tube

Discharge Tube

Side-By-Side

Suction Tube

11. Pinch the

process

tube and cut the

service valve

off the

tubing.

Solder

the

joint

and check

for leaks.

CHECKING PRESSURES

lf the

refrigeration

system is not

operating

properly,

check the operating

pressures.

Install

a

piercing

valve

on the compressor

process

tube.

NOTE: The

only time

you

should

use a

piercing

valve

is to

check

pressures.

lf

the

system is

operating

properly, pinch

off

between the valve

and

the

compressor.

The refrigerant

charge

will not

be dis-

turbed. For high

side

pressures,

install

another

piercing

valve

about 6 inches

from the

compressor

on the

discharge line.

How-

ever,

you

will have

to

evacuate

and re-

charge the

system,

since the valve

must

not

be left

on the tubing

and cannot

be re-

3-10

Maytag 56326 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual