Counter Knife - Duerkopp Adler 550-867 Service Instructions Manual

2.11.4

Counter knife

1
Caution: Risk of injury!
Turn off the main switch.
Check and set the counter-knife only when the machine is switched
off.
Standard checking
The thread is to be trimmed safely with as little pressure as possible.
A low trimming pressure keeps the knife wear low!
It must be possible to safely trim two of the thickest sewing threads
simultaneously.
–
Turn the handwheel until the thread-pulling knife can be swung out
after releasing the latch.
–
Swing out the thread-pulling knife manually. In order to do so push
the bolt with the roller 7 to the right against the control cam 4.
–
Insert two threads to be trimmed into the thread-pulling knife 1.
–
Continue turning the handwheel until the knife has swung back.
–
Check whether the sewing threads have been trimmed properly.
ATTENTION!
If the pressure of the counter-knife is set too high this leads to an
excessive knife wear.
7 4
39