Adjusting The Photocell Light Sensitivity At The Sewing Head - DURKOPP ADLER beisler 2112-5 Service Instructions Manual

5. Remove the bobbin.
6. Unwind the remaining thread from the bobbin and measure the length
 The remaining thread length should be 0.5 m.
7. If more or less than 0.5 m of thread are remaining, the photocell must
If the thread on the bobbin is sewn off over the rest length of 0.5 m without
the message BOBBIN EMPTY being displayed OR if the message BOBBIN
EMPTY is displayed even though the bobbin contains more than 0.5 m of
thread, the photocell sensitivity must be adjusted.
To adjust the sensitivity of the photocell:
1. Rotate the potentiometer at the photocell.
7.9 Adjusting the photocell light sensitivity at the sewing
Fig. 22: Adjusting the photocell light sensitivity at the sewing head
(1) - Sewing material
(2) - Light beam
(3) - Photocell
(4) - Key
34
of the thread.
be adjusted:
• To increase the sensitivity: Turn the potentiometer clockwise
• To reduce the sensitivity: Turn the potentiometer counterclockwise
head
① ② ③ ④
Setting up the machine
⑤
⑥
⑦
⑧
(5) - Key
(6) - Red LED
(7) - Green LED
(8) - Yellow LED
Service Instructions 2112-5 - 00.0 - 02/2020