Operator's Manual
3950 Series
Fine Adjustments and Corrections
111
18. FINE ADJUSTMENTS AND CORRECTIONS
Speed of the 2nd
Fold Unit
Normally it is not necessary to adjust the speed of the
first and second fold unit separately.
Settings are automatically transferred to both fold units.
If, however, the speed of the second fold unit must be
changed separately because of the paper size and the
type of fold, there is a potentiometer in the base of the
second fold unit which can be adjusted by means of
a screwdriver.
slow
fast
Fold Lengths
Fold variations may occur if the fold plate stops are not set accurately
or if the folding speed is changed.
The fold is off across the entire width of the sheets.
Press key
and make the fine adjustment via the menu
FOLD LENGTH
.
A change in the folding speed also changes the fold length.
Therefore the set-up speed must be maintained.
Skewed Folds
Skewed (out-of-square) folds occur when the paper is not fed at right angles with
respect to the fold rollers. This can be corrected as follows:
Ł
Mark the leading edge of a sheet and feed
it through the folder (1).
1
2
Ł
To make the deviation more obvious,
exaggerate the skewed fold by hand (2).
3
Ł
Open the folded sheet and place it in front of the
roller infeed section (3).
Ł
By turning the adjustment wheel on the register table
(4) resp. on the roller table (5), the register rail must be
adjusted in such a way that the leading edge of the
paper is parallel to the fold rollers.
4
5
