Whirlpool RJM 7800 manual Usin the On/ 8 ff Switch, How a Microwave, Oven, Works

WAVEGUIDE

\

MICROWAVE BASICS

MODE

MIXER

/

sy;;L:‘n METAL BOTTOM

MICROWAVES BOUNCE UP FROM THE BOTTOM

How a Microwave

Oven

Works

Microwaves

are

like

radio

waves

or

radar

waves.

They

will

pass through

glass,

plastic.

paper

and

most

other

types

of

containers

that are not metal

MIcrowaves

bounce

off

metal

and

are

absotied

by

food.

When

food

absorbs

microwaves.

heat

IS created

because

water

molecules

in the

food

are

disturbed

and

bounce

around

colllding

with

each

other

Heat

is created

by

this

bouncing

and

colliding

like

when

you

warm

your

hands

by

rubbing

them

together.

When

all

safety

systems

are secure

(door

shut completely

and

the

START

pad

touched).

electric

current

is

allowed

to

reach

the

magnetron

tube.

The

magnetron

tube

uses

electricity

to

create

microwaves.

They

pass

through

a

metal

tunnel

called

the

wavegulde,

past

the

wavetuner,

Into

the

oven

cavity.

Just

at

the

point

where

the

mlcrowaves

are

about

to

go

into

the

oven

cavity.

WhIrlpool

Microwave

Ovens

use

a

mode

mixer

(a

slow-moving

metal

fan)

to

scatter

them.

If all

the

microwaves

went

in

the

same

direction.

they’d

all

bounce

in

the

same

direction,

like water from a hose. Some parts

of the

food

wouldn’t

be

touched.

The

mode

mixer

works

like

a

sprinkler to

spread

mIcrowaves

all

around.

The

walls,

top

and

bottom

of

the

oven

cavity

are

metal.

Microwaves

will

bounce.

around

inside

the

oven

until

they

are

absorbed

by

food.

The food

container

rests

on

a

sealed-in

shelf

above

the metal

bottom

of

the

oven

cavity

Because

the

food

is above

the

metal

bottom,

microwaves

can

get

under

it. through

the

shelf,

to

bounce

up

from the

bottom

Into

the

food

The screen

in

the

door

IS designed

to

keep

microwaves

in

the

oven,

yet

allow you to see inside.

There

are

three

safety

interlock

switches

designed

to

make

sure

that

microwave

oven

will

not operate

unless

the

door

is closed

and

microwaves

are

sealed

tnside.

Do not tamper with any of these Interlock switches.

Usin the

On/ 8 ff Switch

On the frame just Inside the door is an on off switch When fhe switch is

OFF, the microwave oven cannot be started accidentally The switch is designed to help keep “little inquisitive fingers” from using the oven unless you want them to When it is OFF, the clock will work, and you can use the Minute Timer. but you cannot set the oven to cook or defrost

THE SWITCH

MUST BE ON FOR COOKING