Duerkopp Adler 744-122, Service Instructions Manual

Page: 10 / 26

5._ Light barrier
By seam configurations without distance
measurement, e.g. Program P01, the material
edges at the beginning and end are registered by
the light barrier.
In order that the position of the 1st stitch can be
corrected for diagonally-fed material edges, the
median value 5 must be selected with the key
when adjusting.
The interval between the needle and the beam of
the light barrier b45 should be 53 mm.
The track roller 11 should be 14 mm above the
material slider bed.
The light barrier can be swung away sideways. It is
pulled to the front over the rail, the globe is lifted
and swung to the right.
– The height of 14 mm above the material slider
bed is an approx. given due to the light barrier
mounting. Minimal adjustments are possible
after loosening the screws 10.
– Turn on main switch.
– Key in Program 63 on the "PROGRAM" switch
and activate with the STOP key. Enter the
number 45 for the light barrier b45.
– Fasten a thin carton to the material slider bed
53 mm from the needle.
– Loosen screw 15.
– It should be possible to pull the light barrier so
far to the front that the rod_13 with its rear
bearing 14 still ends flush.
– First tighten screw 15 only slightly.
– If the light barrier beam hits the reflector 12
B45+ appears in the display.
– Turn the light barrier on its axis to the right until
B45- appears in the display. The material edge
has been registered.
– Tighten screw 15.
13 14 15
b45
10
11
12
11