Operator's Manual
3950 Series FD 3950PF
29
Air
The air separates the rear edge of the paper stack by means of two rear separator
nozzles (1). The volume of the air can be adjusted by means of a valve (2).
The effect of the air can be influenced by changing the angle of the rear separator
nozzles. They can be pointed up- or downwards by turning a thumb screw (3).
- Air directed upwards:
Turn the screw counter-clockwise.
Too high: Double sheets may occur.
- Air directed downwards:
Turn the screw clockwise.
Too low: Sheets on top are not
fanned properly.
1
2
3
4 5
Air volume and angle are set correctly when the top 10 - 15 sheets separate
easily.
Use as little air as possible for proper function.
Another separator nozzle (4) is positioned between the rear separator nozzles.
It creates an air cushion under the separated sheet so that it attaches itself to the
suction drum. The air volume can be adjusted by means of the valve (5).
Most setting elements are equipped with scales. For repetitive feeding jobs
it is recommended to mark the settings at the scales.
The machine can thus be set-up more quickly.
Please note that the same result can only be reached if all conditions
are the same.
To support the air cushion, front blowers (6)
can be used.
They blow air under the leading edge of the
sheets so that the sheets cling more easily
to the suction drum.
The air volume can be controlled by means
of a valve (7), which can be closed com-
pletely by turning it clockwise.
6
7
