23 BA_VEB100-1-2-2W-4-5_A3-1_180615_en
d Cl. VEB100-5
4.7.1
The cloth retainer stroke is set by means of a knurled nut (2)
Setting the plunger limit stop for sewing over cross seams
Fig. 9a and
Fig. 9b, which serves as upper limit stop. To set the stroke place the material (a
normal fabric layer without cross seam). Close the cloth support arm and turn
the hand wheel manually until the needle penetrates the fabric. In this position
there should be nearly no space between cloth retainer and fabric layer. If the
setting is correct the automatic plunger should be compensating the over cross
seams, so that the needle does not penetrate the outer layer.
The pressure of the cloth retainer on the fabric layers or the hem edge can be
adjusted through turning the knurled nut (1) Fig. 9a and Fig. 9b. The pressure
should be as low as possible to avoid twist or marks resulting from the pressure
between plunger and cloth retainer, mainly when sewing delicate fabrics as e.g.
velvet. However, the pressure should be high enough to keep the material
between plunger and cloth retainer during the time of needle penetration.
The setting of the plunger limit stop has a considerable influence on the stitch
quality.
4.7.2
The spring pressure of the automatic plunger is set at works and usually needs
not to be altered. If the plunger limit stop is set correctly over cross seams the
needle should not penetrate the outer fabric layers.
Setting the automatic plunger
For plunger settings please refer to the mechanic's instructions.
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