Service manual

2 FOLDING SECTION
5-13
DUPLO DF-755 86V-M12D0-0
2.2.4 Adjusting clearance around the switching shaft
If the clearance between the switching shaft and center press roll is not enough, a paper jam
may occur during cross folding or single folding operations, causing damage to the center
press roll.
1) Screw down the flap adjust plate so that the clearance between the folding stopper and the
back end of the flap adjust plate is [A].
[1]
Folding stopper
[2]
Flap adjust plate
[A]
Clearance: 6 mm (0.24 inch)
2) Remove the first folding plate from the machine.
3) Insert the second folding plate into the machine.
[3]
Second folding plate
4) Move the folding stopper fully to the center press roll.
[1]
Folding stopper
[4]
Center press roll
5) Press either end of the switching shaft using a scale of 150 mm (5.91 inches), and visually
check that the clearance between the center press roll and switching shaft is [B].
[5]
Switching shaft
[B]
0.3 ± 0.1 mm (0.01 ± 0.004 inch)
6) If the clearance is not 0.3 ± 0.1 mm
(0.01 ± 0.004 inch)
, remove the second folding plate
from the machine and fine adjust the clearance [A] between the folding stopper and the
back end of the flap adjust plate.
7) Repeat the procedures from steps 2) to 5) and check the clearance again.
Thickness of fine quality paper
Paper type Thickness
64 g/m², 17 lb 0.08 mm (0.0031 inch)
81.4 g/m², 22 lb 0.1 mm (0.004 inch)
104.7 g/m², 28 lb 0.13 mm (0.05 inch)
127.9 g/m²,34 lb 1.16 mm (0.046 inch)
157 g/m², 41.8 lb 0.2 mm (0.008 inch)