Pfaff 433 Manuale utente

PFAFF

433

High

Speed

Sewer

INSTRUCTION

BOOK

G. M.

PFAFF

AG, Sewing Machine

Factory,

KAISERSLAUTERN

From the library of: Superior Sewing Machine & Supply LLC

Insfruction

Book

PFAFF

433

Single-Needle Flaf-Bed Loclcstifch

Sewer

with

Automatic

Lubrication

From the library of: Superior Sewing Machine & Supply LLC

PFAFF

433

Brief

Description

Machine

The

PFAFF

433

is o

single

needle,

lockstitch,

high

speed

sewing

machine,

organized with

link

take-up and horizontal rotary hook,

which

incorporates

many important mechanical improvements while retaining oil worthwhile

features of the service-proven

PFAFF

134.

Depending on the material to

be sewn, this

machine

is capable of operating at speeds up to

5,000

s.p.m.

which

has made the incorporation of a forced feed

lubrication

system and

separate

hook oiling system an absolute necessity.

Since

all manipulations for threading the

machine,

regulating the

stitch

length,

backtacking and the

are the same as

with

models,

expensive retraining of operators is required.

With

its

modern

and

functional

design,

rugged

construction

and perfect

performance, the

PFAFF

433

satisfies the greatest demands

the

sewing

industry.

Varieiies

the

PFAFF

433

The

PFAFF

433

is available in the following varieties:

Model

Class

Work

Maximum

Lengfhof

Sfitch

(Stitchesp.Inch)

Maximum

Speed

(s.p.m.)

Needle

System

Presser

Foot

Clearance

ASheer, ight-

weight

fabrics

75,000

133

BMedium-weight

fabrics

64,700

134R

Medium-heavy

fabrics

5V. 4,400

134

^/u"

The

above varieties differ

the needle bar rise, presser bar lift,

maximum

stitch

length

and take-up

motion

and are particularly well adapted to the

class of work they are intended to perform.

Setting

the

Machine

most

instances

the

PFAFF

433

is fitted for

individual

power

drive.

Head

and power table are packed separately.

The

machine

driven

by a '/i

clutch

motor.

(Type

current

and

tension

optional

to suit

local

require

ments.)

Power

is transmitted

from

the motor to the

sewing

machine

by means of

a V-belt, wide

(DIN

2215).

From the library of: Superior Sewing Machine & Supply LLC

For

50-cycle

current

2,800

r.p.m.

motor

should

used,

while

3,400

r.p.m. motor is appropriate for

60-cycle

current.

The

motor

pulley

can be easily exchanged to alter the

maximum

sewing

speed

of the machine.

The below

table

should be consulted for all

data

regarding the maximum

number

stitches which

can

obtained

with

motor

pulleys

different

diameters.

50 Cycles 60

Cycles

Balance

Wheel

dm ^

Diameter

Motor

Pulley

dm D Order No.

Stitches

per

Minute

Diameter

Motor

Pulley

dm D OrderNo.

Stitches

per

Minute

99089

3,800

3^/s2"

3-/32

99086

3,800

2^'/64"

"/u"

4'/.4'

99090

4,000

31-/3/'

3"/84

99087

4,000

2^-/64"

4"/44"

4^8"

99091

4,2C0

3"/84"

3^V84 '

99088

4,300

2^V64"

4'V3:"

4"/84

99092

4,400

3"/84"

-/,8

99089

4,600

4^V.4"

4"/3=

99093

4,700

3'V.6"

4'/64'

99090

4,800

2^V^4"

4"/»"

S'/b"

99094

5,000

4"/m"

4^/8-

99091

5,000

effective

diameter;

D =

total

diameter

Unpack

the head

cautiously

order to

avoid

damage to the

machine.

After

taking

off

the

lid

the

box,

unscrew

the

wood

screws

which

hold

the cushioned wooden blocks that support the machine head in the box.

Cautiously

lift out the head,

wipe

off the dust and

mount

it on the rubber

pads on the

table.

facilitate the

mounting

of the

V-belt,

slip

the belt

on the

machine

pulley,

slightly

tilt back the

machine

and

pull

the belt onto

the

motor

pulley.

Adjusting

the

V-belt

tension

instructed

Section

20.

The

machine

is dispatched

without

oil

the reservoirs and must not be

run

while

this

condition.

2. Filling

the

Oil

Reservoirs

The amount of oil

which

is needed for the first two

fillings

comes with the

machine in o can. The oil used in the

PFAFF

433 is a spindle oil with o

viscosity

110S/70»F

(US)

95R/70°F

(Br.)

which

has

proved

very

satis

factory for the

lubrication

high

speed

sewing

machines.

fill

the

main

reservoir take out screw d (Photo

1),

fill

in about one pint

(.5

of oil obd

wait

a few minutes until it has drained down into the reservoir. Then

-check

the

oil

level

gauge to see if the

amount

oil

filled

up is

sufficient.

The

oil

level should be between the "max." and "min." marks when the machine

is inoperative.

Never

remove

the top cover to

fill

oil

there.

From the library of: Superior Sewing Machine & Supply LLC

Experience

has

shown

fhof

It is of advantage to

lubricate

the

hook

sepero-

tely. The reservoir which supplies oil to the rotary hook is located under

top

cover b on the machine arm. (Photo 1).

Photo

Take

out

screw

end

fill

about

5 cu. In.

oil Into

the

hook

oil

reservoir

(Photo 21).

As long as the red tip

the float spindle is visible In oil level tube S

(Photo

21)

while

the

machine

operation, there Is enough oil in the

reservoir. If, however, the red tip Is flush with the top surface of the oil

sealer nut, oil should be filled up.

mm—V

Photo

From the library of: Superior Sewing Machine & Supply LLC

Testing

the

Machine

It is

recommended

test-run

the

machine

with

needle

thread

and

bobbin

case removed. Before you plug the power lead into the electric circuit,

niake sure that the voltage of the circuit is the same as that indicated on

the

rating

plate of your

sewing

machine,

and ascertain that the

machine

pulley

will

turn

toward

you.

Never

must

the

pulley

turn

the opposite

direction

this is

bound

cause

trouble

the

lubrication

system.

The direction of

rotation

the

motor

can

best

be checked

before

mounting

the belt. If the

belt

has

been

mounted,

hold the

balance

wheel,

switch on

the motor and tip on the treodle.

From

the jerk of the balance wheel you

can

tell In which direction it will

rotate.

If it

rotates

in the

wrong

direction,

simply

exchange the two wires on the motor terminals.

Start the machine by pressing down the treadle.

Never run Ihe

machine

unless

you have placed a piece of fabric

under

the

presser

foot

or raised the presser

bar.

For

the regulation of the

oil

flow

to the

hook

see

Section

23.

SYSTEM

Photo

From the library of: Superior Sewing Machine & Supply LLC

Taking

Out

fhe

Bobbin

Case

Raise fhe take-up lever to its highest position, lift the latch of the bobbin

case with thumb and forefinger of your left hand and pull the bobbin case

out of the machine as shown in photo 3.

As long as you hold the latch open, the bobbin cannot fall out.

Winding

fhe

Bobbin

For this operation the power-driven bobbin winder is used which features

number

improvements. (Photo 4).

The

bobbin winder

spindle

runs in a sintered steel

bushing

which

makes

lubrication of the winder completely superfluous.

Photo

From the library of: Superior Sewing Machine & Supply LLC

order

to reduce

somewhot

the high

speed

of the machine, the

diameter

of the bobbin winder pulley

has

been Increased to

The V-groove in the rim of the pulley has been designed with an obtuse-

angled profile so that the V-belt

will

fit into it perfectly and, if necessary,

even

oround

belt

may

be used.

The bobbin winder is quietly stopped by means of an adjustable leather

pad.

Awindshield which is mounted on the winder

base

prevents the

thread

from

being dragged over

toward

the belt by air suction.

Fasten the bobbin winder to the table with Its driving pulley far enough

from

the

machine

belt

that

it will

not

touch

the

belt

when

the

winder

disengaged.

Pass the thread from spool 1 through thread guide 2, clockwise around and

between tension discs 3, and to the bobbin.

Pull

the thread through the

slot in the bobbin, from the inside. Place the bobbin on spindle 5 and hold

the

end

the

thread

until

the

winder

has

made

few

revoilutions.

Start

the winder by pressing down engaging lever 6.

When

sufficient thread has

been wound on the bobbin, the winder will stop automatically. The amount

thread

to be

wound

on the

bobbin

regulated

screw

Turn it to the right

for

thread;

end

the

left

for

less

thread.

Threading

ihe

Bobbin

Case

Insert a full bobbin into the bobbin

case

that

the

thread

draws

on the

top from

1he

left toward the

right,

as shown in photo 5.

Photo

From the library of: Superior Sewing Machine & Supply LLC

Pull

the thread into slot 1 end draw it under the

tension

spring into delivery

eye

Place

the

bobbin

case

with

the

bobbin

the

center

stud

the

bobbin case base and moke sure that the end of the latch points toward

you. Press the bobbin case all the way

until

clicks

info

position audibly.

This

is very important as, otherwise, needle or bobbin case breakage may

result.

Threading

the

Needle

thread the

PFAFF

433

is not

difficult

at all

since

the thread passes in

clear

view

of the operator,

similar

to the

PFAFF

133

and

134.

(Photo

6).

Photo

From the library of: Superior Sewing Machine & Supply LLC

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