Global WF904 Bedienungsanleitung

'· '

GLGBAL

WF904

INDUSTRIAL SE\VING

MACHINE

Flat Bed

Extra

Heavy Duty

-Compound-Feed

INSTRUCTION

MANUAL

CATALOG

INSTRUCTION MANUAL

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CONTENT

PRECAUTIONS FOR USER----------------------------------------------------- 1

2 S:PECIF'ICATION------------------------------------------------------------------ 2

3 PREPARATION

F'OR

OPERATION-------------------------------------------- 2

Cleaing

the

machine---------------------------------------------------------------- 2

Examination------------------------------------------------------------------------- 2

Lubrication-------------------------------------------------------------------------- 2

Testing------------------------------------------------------------------------------ 3

4 IIO\\'

ATTACII A NEE])LE------------------------------------------------- 3

5 \\'IN])ING

OF'

BOBBIN TIIREA])---------------------------------------------- 4

6 A])JUSTMENT

OF'

TIIE BOBBIN \\'INl)ER---------------------------------· 4

7 TIIREA])ING ---------------------------------------------------------------------- 5

8 REMOVING AN]) INSERTING THE BOBBIN------------------------------· 5

9 A])JUSTING THE THREA]) TENSION---------------------------------------· 6

I0 ADJUSTMENT

PRESSER PRESSURE------------------------------------ 6

ADJUSTMENT

\\'

ALKING

F'OOT

AND

PRESSER FOOT------------ 7

ADJUSTMENT

STTICII LENGTII

AN]) FOR\\'ARl)/BACK\\'

ARD

SE\\'ING---------------------------- 7

F'EE])

DOG IIEIGIIT-------------------------------------------------------------- 8

ADJUSTING TIIE IIEIGHT

TIIE NEE])LE BAR-----------------------· 8

1. PRECAUTIONS

FOR

USER

(1) Precautions for Safety

When turning the power on, keep your hands and fingers away from the area

around/under the needle and area around the pulley.

® The power must be turned off when the machine is not used, or when the

operator leaves his/her seat.

@ The power must be turned off before installing or remove the "V" belt,

adjusting the machine, or when replaceing

@ Avoid placing fingers, hairs, bars etc. near the pulley, the

"V"

belt and the

motor when the machine is in operation.

@ Do not put fingers under/around the needle or the pulley when the machine

in operation.

(2) Precautions before Operation

Never operate the machine before it

lubricated fully.

® When a new sewing machine

first turned on, verify the rotational direction

the pulley with the power

on.

(The pulley should rotate counterclockwise when viewed from the pulley)

@ Verify the voltage and phase (single or three) with those given on the motor

nameplate.

(3) Precautions for Operating Conditions

Avoid using the machine at abnormally high temperature (35°C or higher) or

low temperature (5°C or lower).

® Avoid using the machine in dusty conditions.

@ Avoid using the machine in areas where there are too much electrical noise

which resulted from the high-frequency weld and others.

2. SPECIFICATION

Max. sewing speed (r.p.m)

800

r.p.m

Needle No. DYx3

26#

Needle bar stroke (mm)

Thread take-up lever stroke (mm)

Stitch length

(mm)

0-11

By hand

(mm)

Presser-foot stroke

By knee

(mm)

3. PREPARATION FOR OPERATION

(

Clean the machine

Before leaving the factory, the machine parts are coated with rust-preventive

grease, which may be hardened and contaminated

dust during storage and

shipment. This grease must be removed with gasoline.

(2) Examination

Though every machine is confirmed by strict inspection and test before leaving

the factory, the machine parts may be loose

deformed after long distance

transportation with jolt. A thorough examination must be performed after cleaning the

machine.

Tum

the pulley to see

there is running obstruction, parts collision, uneven

resistance

abnormal noise.

these exist, adjustment must

made accordingly

before run-in operation

(3) Lubrication (Fig.

When a new sewing machine is used for the first time,

sewing machine left

out

use for considerably long time is used again, replenish a suitable amount

oil

to the portions indicated

arrow in below figure.

CAUTION: Please use white spindle oil.

Always keep the presser lifted before attempting a dry run.

Fig.I

(4) Testing

In order to get the best working situation, run the sewing machine in a low

speed for about 1 month after lubricated fully. Then increase the speed to the need

one.

HOW TO ATTACH A NEEDLE (Fig.2)

CAUTION: Before using the following procedures, be

sure to tum the power switch off.

_Oil_..

...........

.,,

....cl.tmp

................

k;.;;~i;;-.;.-1

..-

....

.,,

....

,..

....

loft

The needle used by this sewing machine is

DYx3 26#. During operation, proper needle

can be chosen according to the sewing

thread. (The sewing thread should be able to

pass the pinhole.)

Fig.2

............

~~-

x x

WINDING

BOBBIN THREAD (Fig.3)

(I)

Push the bobbin ® on the bobbin winder shaft as far as it will go.

(2) Bring the thread forward toward the bobbin and wind from below

clockwise direction

several times around the bobbin.

(3) Push the level @ toward other side so that the driving wheel and driven wheel will engage

and then start the machine.

(4) The driven wheel will automatically be free from the driving wheel and stop after the

bobbin

filled with thread.

Fig.3

ADJUSTMENT

THE

BOBBIN WINDER (Fig.3)

(

In case

uneven winding

the thread does not wind evenly on the bobbin, loosen the nut

and move

the bracket ® to the right or to the left as may be required, then tighten the nut.

(2) Winding amount

thread

Adjusting ® can increase or drcerase the amount

thread wound on the

bobbin.

(3) Winding strength

Strength

the winding can be adjusted with the nut

CD.

THREADING (Fig.4)

Raise the needle bar to its higest position and route the upper thread in the order

illustrated below.

Fig.4

8. REMOVING AND INSERTING THE BOBBIN

(I)

Removing: Open the shuttle race cap and the bobbin holder, then take out the

bobbin.

(2) Installation: Put the bobbin in the rotary hook case, Permit about 5cm

bobbin thread to hand down freely. Install the bobbin in the bobbin case so

that the thread wound direction is clockwise. Then colse the rotary hook and

the shuttle race cap.

ADJUSTMENT

THE

THREAD TENSION (Fig.5)

For ordinary stitching, the tension

the upper and the lower threads should be

equal.

Well

balanced

stitch

Upper

thread

too

str~

lower

thread

too

weak

Upper

thread

too

weak

lower

thread

too

strong

Fig.5

(1) Tension

the Upper thread

Before adjusting the tension

the upper thread, be sure that presser foor

let

down.

adjust tension,

turn

serrated nut on tension device to the right (clockwiseO

will increase the thread tension, while turning it to the left (counter-clockwise) will

decrease the tension.

(2) Tension

the lower thread

The lower thread tension is controlled by the larger screw near the end

the spring

at the outside

the bobbin case. Turning this screw to the right (clockwise) will

increase the thread tension, while turning it to the left (counter-clockwise) will

decrease the tension.

10. ADJUSTMENT

PRESSER PRESSURE (Fig.6)

(

Pressure should be adjusted according to the material to

be sewn.

(2) Pressure on both the walking foot and the presser foot

can be adjusted.(The adjusting screw has been set before

shipment.)

(3) Sewing pressure should be adjusted to the minimum

required strength.

r---~----,

ADJUSTMENT OF WALKING FOOT AND PRESSER FOOT

(Fig.7)

(I). The alternating movement on the walking foot and presser foot can be adjusted

by changing the position relations

the parts

the presser foot lifting mechanism.

(2) Changing the position relation

the connecting link 2 and the crank 3 can

complete the adjustment.

(3) Adjustment should be changed according to the thickness

the material to be

sewn.

Fig.7

12. ADJUSMENT OF STITCH LENGTH

FORWARD/BACKWARD SEWING (Fig.8)

(

Adjusting the stitch length adjusting bolt can change the stitch length.

(2) Stitch length can be adjusted between

0-11

mm.

(4) Setting the stitch length adjusting bolt above

"O"

can backstitch.

Fig.8

AND

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