Global WF 9221-76 Manuale utente

GLOBAL

WF 9221-76

Instruction manual

Technical Data

Machine subclass: Global WF 9221-76 Global WF 9221-2-76

Needle system : DY x 23 DY x 23

Needle size (standard) : 230 230

Max. PFL lift : 20mm 20mm

Max. stitch length : 10mm 10mm

Standard needle gauge : X 18mm

Needle gauge available : X 8 / 9,5 / 12,7 / 15,9 /

25,4 / 44,5mm

Working space : 760mm 760mm

Back Tack (standard) : Pneumatic Pneumatic

Presserfootlifter (standard) : Pneumatic Pneumatic

Adjusting the stitch length

-Push and hold button shown on picture, turn handwheel until you feel button lock-in.

-Hold in the button, turning the hand wheel away from you will make the stitch length

longer and turning the hand wheel towards you will make the stitch length shorter

(see below).

Adjusting the rocker

-With the stitch length being set for 0 with the needle at the lowest position, the

feeding foot bar should be distanced 14,5mm from the presser foot bar (see picture

below).

Feed dog height

-Being in its topmost position, the feed dog should exceed the throat plate by 1 tooth

height.

-For checking, set the stitch regulator for 0 stitch length and turn the handwheel.

Lifting movement of the feed dog

-The ascending feed dog and the descending needle should reach the throat plate level

simultaneously (see picture below).

-The feed dog is at its topmost point when the needle is at its lower dead point (see

picture below).

-For checking, set the stitch regulator for 0 stitch length and turn the handwheel.

Feed lift motion

-Loosen the two Allen keys, turn the shaft to adjust the height of the feed lift motion

(see picture below).

Hook timing

-Set the stitch length on 0. Turn the needle to the lowest position and continue to turn

until the needle bar rises 3,5 – 4mm at this position the hook point must be half way

across the width of the needle (see picture below).

Needle bar height

-Set the machine on the longest stitch. The hook must be 2mm above the eye of the

needle (see picture above).

Distance between the hook and the needle

-The distance between the hook point and the needle should amount to 0,1mm. This is

adjusted by unscrewing the two screws highlighted below in red and by moving the

hook saddle left of right (see picture below).

-In case of a needle size change, check the distance and adjust accordingly.

-After re-setting, re-check hook timing.

Bobbin case opener

-The bobbin case is opened by the finger at the moment of thread passage.

-The finger travel and the lifting moment are not adjustable.

-Bobbin case opening finger – max opening 2 – 2,5mm (see picture below).

Feeding foot and presser foot

Equal stroke of feeding foot and presser foot

-Boot feet should have the same stroke.

-Adjust 0 stitch length, turn the machine and compare the strokes.

-For correcting:

1. lift slightly the foot with the higher stroke off the throat plate.

2. Loosen the block with the screw of the shaft (see picture below).

The lifted foot will be lowered by the presser foot spring down to the throat plate.

3. Repeat the adjustment until the strokes are equal.

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