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5.7 Sewing without trimming
The technological utilization of this machine with vibrating
bottom horizontal trimming is not limited only for sewing
operations with simultaneous edge trimming. It can be also
used for current operations in the shoemaking and fancy goods
indusries in accordance with the selected sewing categories
(accessories).
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
The dismantling operation is to be done in the position
trimming mechanism out of function.
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Remove the knife guard (1) and screw in anew its attachment
screw.
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Loosen the screw (2) and remove the complete holder (3)
together with the trimming knife (4) from the shaft (5). The
sleeve (6) is to remain on the shaft it serves for orienting
the position of the knife holder when remounting.
Caution :
Be sure in placing the dismantled component parts into the
drawer with regard to the protection of the trimming knife
cutting edge and to the possibility of injury.
6
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Lifting the top roller by electromagnet
6.1 Description
The core of the electromagnet, respectively its pin must be set
in such a way that the presser foot lifting is enabled.
6.2 Setting the electromagnet pin
Caution! Danger of injury!
Switch off the main switch! Before starting the
setting operation, wait until the motor stops!
- Unscrew the cap of the core (1) of the electromagnet.
- Shift the core (2) with the bar (3) and loosen the locking
screw (4).
- By screwing the pin (3) in the core (4), set their mutual
position in such a way that the core is fully pushed in with
the maximum presser foot lift.
- Tighten the locking screw (4).
- Screw on the cap (1).
6.3 Setting the electromagnet current
The time response of the current of electromag. has 2 phases:
- initial switching on (0,2 ÷ 0,5 s) - the maximum force
- maintaining (when keying)
It is necessary to set max. 40 % of keying (see
instructions for use of the stopmotor). With a
higher value thereof and with a long period of the
presser foot in its lifted position there is a danger
of electromagnet overheating.