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3.
Thread Trimmer
3.1 Function Sequence
When, after the " seam end " signal, the 1st position is reached, the
thread trimmer magnet is switched on and the drive segment pressed
against the guide curve. The thread tension is opened and the sewing
unit runs at the cutting rpm of 160 min
When the drive segment of the magnet is pulled into the recess of the
guide curve, then the thread pull knife is swung into the needle thread
loop. The needle thread and the underthread fall behind the thread pull
hook of the knife.
When the drive segment is pressed out of the guide curve recess, then
both threads are pulled to the counter knife and cut shortly before the
thread lever high position.
When the thread lever high position and thereby the 2nd position are
reached the motor stops. The magnet for the thread tension opening is
turned off and the magnet for the thread trimmer is turned off.
General information
–
The needle thread length is influenced by the pre-tension.
–
After a missing stitch the needle thread is not cut.
–
Replace dull knives only as pairs.
–
When checking and correcting the settings proceed in the order
described.
-1
.
25
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