Adjusting tensioners (2) and (3) - CLASSIC machines with
pneumatic control
–
Through pressing the key (5) the additional tension (2) will be
switched off. If the key (5) is pressed anew, the additional tension
will be activated again. The connectable additional tension (2)
helps in quick adjustment of the needle thread tension, for example
in order to get a tight stitch formation with regular seams when
sewing different materials.
–
Press the key (5)
–
Sew material with few layers and regulate the thread tension via
the main tensioner (3) until the correct interlacing of the thread is
reached (see illustration).
–
Sew material with more layers, switch on the additional tension (2)
via the key (5) and regulate it until the correct interlacing of the
thread is reached.
Correct thread loop in the center
of the material
Increase of the needle thread tension
(or reduce the hook needle tension)
Reduce the needle thread tension
(or increase the hook thread tension)
19
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