Adjusting The Needle Thread Knife - DURKOPP ADLER 580 Operating Instructions Manual

19. Adjusting the needle thread knife

3
5
0,2 mm
54
2 1
Caution: Danger of injury !
Turn the main switch off.
Adjust the needle thread knife only with the machine switched off.
Standard checking
The cutting motion of the needle thread knife 2 is effected after sewing.
The exact cutting moment is set in the program.
When in final position the knife holder 3 must not touch the spreader
stop 1.
The needle thread knife should cut through the needle thread loop
taken up from the right looper at the looper front 5 only. If the needle
thread loop is cut through on both sides, this results in a too short
thread end and thus in skip stitches at the seam beginning.
In the right final position the needle thread knife must neither be in the
thread zone nor touch the spreader stop.
There must be a distance of approx. 0.2 mm between needle and knife.
In cut-off position the knife must move approx. 1 mm beyond the
edge 4.
–
Move the knife manually and check whether all rules mentioned
above are kept.
4