19 BA_560_A4_180619_en
5.3
5.3.1
Sewing
By means of the treadle the sewing program is controlled in two steps.
Sewing process (Fig. 9)
1st step: plunger moves upwards to the needle plate
(can be lowered again by heeling the treadle)
2nd step: automatic sewing program as follows:
1. A spot tack with the number of stitches shown on the LCD
display is sewn.
2. Pretension of the thread through pulling of the thread take-up.
3. Lifting the thread tension, pulling the thread by means of the
thread take-up to the preset length and trimming the thread.
4. Lifting the plunger, provided the treadle is not operated any
more.