DURKOPP ADLER M-Type 869, Инструкция по эксплуатации

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2.14.4 Cutter pressure and bobbin thread clamp
Caution: Danger of injury!
Turn off the main switch.
Only check and adjust the counter blade and the bobbin thread clamp
when the machine is switched off.
Standard checking
The thread should be cut reliably with the lowest possible pressure.
Low cutting pressure keeps wear on the blades low.
Two of the thickest threads to be sewn must be cut reliably at the
same time.
The clamping spring 1 should keep the cut thread so that skipped
stitches do not occur at the start of the seam.
–
Turn the hand wheel until the thread draw cutter can be swung
out.
–
Swing the thread draw cutter out by hand.
–
Insert two of the threads to be cut into the thread draw cutter.
–
Keep turning the hand wheel until the cutter has swung back.
–
Check whether the sewing threads have been cut cleanly.
–
Remove the thread from the clamp and check the clamping effect
while doing this.
If the clamping effect is too great or too small the thread clamp
must be reset.
IMPORTANT!
If the counter cutter pressure is set too high this leads to increased
wear on the cutter.
An incorrect thread clamp setting may lead to problems at the start of
sewing.
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