DF500 Folder Operator Guide
19
SV40214 Rev. A
Fine Tuning the Feeder for "Problem" Paper
The fine tuning feature allows you to adjust the feeder gap (the
opening through which the paper must pass) in small steps while
the machine is running. This is helpful with some “problem”
papers, such as lightweight recycling papers and heavy stock be-
cause the stan dard feeder settings tend to mark the coated sur-
face of the paper.
Observe the paper feed while folding. If the feeding is erratic
(paper seems to hesitate before entering the folder) or if you get
“FAIL TO FEED” messages, check first whether the pressure roller
is exerting enough pressure on the paper (see page 11 for de-
tails). If more pressure does not help, you must open the feeder
gap a little. If you tend to get double sheets being fed, you must
close the gap slightly.
The steps below de scribe in detail how to fine tune paper feeding.
1. With the machine running, press the
"
or
!
key. The display
will change to:
2. Press the
"
key to open the gap, or the
!
key to close the
gap. Typically, the display will show:
NOTE: A "+" symbol on the display shows you are opening
the gap a little. A "–" symbol on the display shows you are
closing the gap a little.
3. By using the
"
or
!
keys, you can open or close the gap in
steps shown on the display by up to five "
+
" or five "
–
" sym-
bols. Consequently, a typical display might be something like:
or
If no symbols show on the display, you are back to the stan-
dard feeder setting.
(continued on next page)
TUNE THICKNESS
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