Bernina 740 Manual

The

Bernina

-Favorite

sewing

machines,

models

740

and

74],

as

well

as

142.

are

driven

by

a

horizontal

motor

fixed

at

the

back

of

the

machine

on

the

ba-

lance

-wheel

side.

Drive

is

effected

by

means

of

a

%%belt

acting

directly

onto

the

groove

of

the

balance

-

wheel.

The

coupling

plug

29

is

of

the

3

-pole

type.

The

cable

for

the

foolstarter,

as

well

as

the

cable

-

with

plug

for

junction

to

the

electric

supply

circuit

are

both

connected

therewith.

A

so-called

data

or

rating

plate

31,

giving

particulars

of

the

voltage

and

power

of

the

motor,

is

fixed

on

the

casing.

Prior

to

connecting

the

flex

to

the

mains,

make

definitely

sure

that

the

voltage

Indicated

nn

the

rating

plate

(i.e.

the

number

of

volts)

corres-

ponds

to

the

mains

voltage.

Said

mains

voltage

Is

indicated

on

the

current

meter

of

your

home.

Dot

not

rely

on

the

number

of

volts

indicated

on

plugs

and

rockets!

Care

of

the

motor

a)

Lubrication

The

motor

has

friction

bearings,

by

means

of

which

a

nearly

silent

running

can

be

obtained.

The

bearings

are

automatically

lubricated,

so

that

they

need

no

service

at

all.

bi

Corium

brushes

From

time

to

lime

the

length

of

the

carbon

brushes

should

be

seriously

controlled.

In

order

to

accomplish

this

task,

the

upper

and

lower

brush

support

plates,

Sittiated

at

the

front

aide

.1

the

motor,

mast

be

unscrewed

and

the

carbon

brushes

removed.

If

these

carbon

brushes

are

not

removed

in

due

time,

with

a

minimum

length

of

IA",

they

will

damage

the

collec-

tor

and

soon

the

motor

can

no

more

be

used.

When

re-inserting

the

carbon

brushes

please

take

care

that

the

ground

rounding

which

must

match

with

the

rounding

of

the

collector

is

not

introduced

the

wrong

way

!

The

seeing

light

The

lamp

is

mounted

in

the

swivelling

head

cover

to

enable

;In

even

distribution

of

light

over

the

en-

tire

sewing

urea,

completely

free

from

any

glare.

It

is

switched

on

and

off

by

pressing

the

light

button

6.

The

bulb

can

be

changed

as

is

usual

currently

with

all

lamps.

Turn

it

to

the

left

to

remove,

and

to

the

right

to

insert.

9

Bernina 740 Manual - Page 10

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