Checking The Rest Thread Monitor - Duerkopp Adler 2211-5 Working Instructions

Beisler Automated Sewing Equipment
C.5
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
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.
Maintenance
are covered.
Short Seam Automat 2211-5 Working Instructions
Fig. 27
- C 64 -
Fig. 27