16. Synchronizer
The setting of the synchronizer is necessary when the synchronizer is
mounted on the handwheel during installation of the machine or when a
replacement of the synchronizer occurs.
The setting of the digital synchronizer is described in the Chapter 16.1
(Positioning).
Caution Risk of Injury !
Turnthemainswitchoff.
Set the synchronizer only with the sewing machine turned off.
Conduct function tests with the machine running only with the
greatest possible caution.
Setting the 1
st
position
The trimming sequence is initiated in this position. This procedure
already occurs before the needle low position because the thread
pulling knife would otherwise collide with the bobbin case opener finger.
In this position the lower edge of the needle eye of the lowering needle
should end at the hook covering ring 3.
This is necessary so that the r oller lever can be swung against the
lowest point of the guide curve.
–
Turn the handwheel until the described setting is reached.
–
Turn disc 1 accordingly.
Setting the 2nd position
The machine should stop in the thread lever high position after the
trimming sequence.
–
Tu rn the handwheel until the thread lever high position is reached.
–
Set disc 2 accordingly.
The settings of the synchronizer are to be checked with the machine
running !
If the positions are not reached, then the settings are to be corrected
with the machine turned off.
71
GB
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