Operation Manual

Fig. A Correct thread interlacing in the center of the

material

Fig. B Needle-thread tension too weak

Hook-thread tension too strong

Fig. C Needle-thread tension too strong

Hook-thread tension too weak

6.2.1 Function of the main thread tension and the supplementary thread tension in relation to the sewing

foot lifting for subclass 869- ...

The thread supplementary tension can, at any time, be switched on or

off by actuating key 1 (see chapter 6.15) of the key pad. The parameter

F-299 must be set on “1" for this to w ork.

Sew ing foot lifting Sewing foot lifting

during seam after

thread trimming

Parameter Thread- Thread- Thread- Thread-

Setting main- supplement.- main supplement.

tension tension tension tension

F-196=0 0 0 0 0

F-196=1 1 1 0 0

F-196=2 0 0 1 1

F-196=3 1 1 1 1

1 = Thread tension opened mechanically

0 = Thread tension closed mechanically

If the supplementary thread tensioner is open, this condition will be

maintained when lifting the s ewing foot.

When switching the machine off, the last setting of the

supplementary thread tensioner will be maintained through the

mains connection.