Position Sensor - Duerkopp Adler 743-221 Service Manual

2.11

Position sensor

1
2
3
16
4
5
6
Regulation and inspection
After sewing the upper part of the machine must move to position C of
the adjusting disc.
Caution: danger of injury
Turn off the main switch.
The light apertures may only be adjusted with the main switch turned
off.
–
Partly undo clamping screw 6.
–
Rotate light apertures 1 and 4 so that their light slits 2 and 5 are
opposite each other (offset by 180°).
The position of light aperture 4 also determines the moment at
which the thread clipper switches on.
–
Tighten clamping screw 6.
IMPORTANT !
The light apertures 1 and 4 must not be rotated when tightening the
clamping screw 6.
–
Turn on the main switch.
–
Set the "program" switch on the front plate of the control device to
a sewing program (" 10...29 ").
–
Press the " P " button for 3 seconds.
Set the motor-speed parameter to maximum.
–
Place the material in position and start the sewing process.
IMPORTANT !
Never start up with no material in place: this may damage the
material clamps.
–
After the thread is cut the upper part of the machine moves to the
second needle position (position C).
7
8