Operation Manual

- C 64 -

Short Seam Automat 2211-5 Working InstructionsBeisler Automated Sewing Equipment

C.5

Maintenance

C.5.5 Machine set-up

Checking the rest thread monitor:

The rest thread monitor is checked using a photocell. If

the messages on the display do not match the filling state

of the spool, the photocell sensitivity must be checked.

1. Fig. 27: Fill bobbin to half its capacity so that filling state

indicators

of upper chamber

are covered.

2. Insert bobbin and sew until display shows: BOBBIN:

003 m.

Keep sewing until display shows: BOBBIN EMPTY

3. Remove spool, unwind rest thread and measure remai-

ning length (should be 0.5 m).

Adjusting the photocell:

• If the thread on the spool is sewn off over the rest length

of 0.5 m without the message BOBBIN EMPTY being

displayed, the photocell sensitivity must be increased:

• Rotate potentiometer at photocell in clockwise di-

rection.

• If the message BOBBIN EMPTY is displayed even

though the spool contains more than 0.5 m thread, the

photocell sensitivity must be reduced:

• Rotate potentiometer at photocell in counter-clo-

ckwise direction.

Fig. 27