Operation Manual

5.4 Turn-on Interlocks
Switch b4
With the cloth clamps opened the machine can only be turned on in its end position. For
this cams 1 operates the switch b4.
Switch b1
In all other machine positions with the cloth clamps opened a turning on and thus also
the thread catcher function are blocked by switch b1.
The safety switch b1 is bypassed by the activated switch b4.
The machine, with
opened cloth clamps,
can only be started in its end position.
Example:
The sewing sequence is interrupted with the hand shift lever.
During the subsequent release of the cloth clamps switch b1 opens.
The switch interlock in the thread catcher controls switches the motor off.
To restar t:
–
Pull the turn-off lever forward (see chapter 2.2).
–
Turn the handwheel until it catches.
The needle is in its highest position.
–
Remove material.
–
Close the cloth clamps.
–
Bring the hand shift lever into position
"I"
.
–
Turn on the motor by operating the push button b5.
The machine moves back into its end position.
Deactivating the upper thread catcher
By pulling the plug from the electromagnet the upper thread catcher is deactivated.
ATTENTION !
Do not block the thread catcher by pulling the plug from the
thread catcher controls. The power supply for the sewing
drive is interrupted otherwise.
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