Pfaff 8303-040 Instruction Manual page 32

Heat sealing
"Feed roller raised" mode
If this function is switched on, the feed roller is raised when the pedals are in their basic
position (pedal setting "0") and diode 4 lights up.
"Feed roller lowered" mode
If the "feed roller raised" mode is switched off, the feed roller is lowered when the pedals are
in their basic position (pedal setting "0"). Diode 4 is off.
"Feed rollers in reverse" mode
This mode makes it possible to reverse the feed rollers in order to remove a tangled sealing
tape from the feed rollers.
10 - 3
Lower the feed roller with pedal setting "+1" (only after the machine has been switched
on).
Switch on the "feed roller raised" mode with key 2.
Place the material to be sealed between the feed rollers.
Fix the material with pedal setting "+1" – lower the feed roller.
Start the sealing operation with pedal setting "+2".
The hot air nozzle is engaged and the transport rollers start with a time delay.
During the sealing operation the material must be guided by hand.
To interrupt the sealing operation (e.g. to change the position) switch back to pedal
setting "+1".
The hot air nozzle disengages and the transport rollers move back a short distance.
Trigger off the sealing tape trimming operation ca. 5 cm before the end of the seam with
pedal setting "+3" (only on machines with sealing tape trimmer).
If a sealing seam has to be pressed, key 1 should be pressed shortly before the
end of the sealing seam, in order to avoid insertion of the sealing tape before
pressing.
Raise the feed roller with pedal setting "-1".
Place the material to be sealed between the feed rollers.
Fix the material by releasing the pedals (basic position "0") – lower the feed roller.
Start the sealing operation with pedal setting "+2".
The hot air nozzle is engaged and the transport rollers start with a time delay.
During the sealing operation the material must be guided by hand.
To interrupt the sealing operation (e.g. to change the position) release the pedals (basic
postion "0").
The hot air nozzle disengages and the transport rollers move back a short distance.
Trigger off the sealing tape trimming operation ca. 5 cm before the end of the seam with
pedal setting "+3" (only on machines with sealing tape trimmer).
Raise the feed roller with pedal setting "-1" (only in the "feed roller lowered" mode).In the
"feed roller raised" mode, the feed roller is raised with pedal setting "0".
Switch on the "feed rollers in reverse" mode with key 3.