Beisler 1281-5 - Manual (Page 80)

3. Adjusting the sewing unit
3.1 Adjusting the light barrier
Caution: Risk of injury!
The adjustment of the light barrier is done with the sewing unit
switched on.
Carry out adjustment and function test with utmost caution.
Aligning the light barrier
The light barrier 2 has to be aligned to the area 1 of the machine head.
–
Loosen screws 4 and 5.
– Align the light barrier support 3 correspondingly.
– Tighten screws 4 and 5.
Adjusting the light barrier intensity
–
Turn the sensitivity potentiometer 5 at the front above the
light-emitting diode 6 to the left stop (minimum sensitivity).
– Turn the potentiometer in clockwise direction until the light-emitting
diode 6 switches on.
– For a safe light barrier function turn the potentiometer once again
in clockwise direction.
If the light-emitting diode does not shine, the light barrier should be
cleaned, reset or exchanged.
18
5 4 3 2 1
6 5