Formax FD 2092 - Manual (Page 14)

3. Turn the speed control to ½ or full speed. Place
your thumb on the back of the stack to keep paper
from feeding. Press the green button, the sucker
wheel will start to turn. Reduce the pressure of your
thumb to feed only 3 to 4 sheets. Press your thumb
down to stop the feeding again. Press the red button
to stop the sucker from turning. If the paper did not
feed, adjust the position of the vacuum advance,
bleeder valve, or sheet separator.
4. Check the accuracy of the 3 or 4 sheets fed. It
may be necessary to adjust the fold stop, or the
squareness of the fold stop, or the squareness of
the side guides. Try only one adjustment at a time
then repeat step 3
5. If the folds look good, the job may now be run.
The speed of the folder will affect the accuracy of the
folds. Folds set up at slow speed will be difficult at
high speed and will need to be fine tuned.
NOTE: All of the controls mentioned above contribute
to smooth and accurate folding. There are many
combinations possible depending on the condition of
the paper and environment.
Bleeder Valve (Vacuum Adjustment)
There is a bleeder valve on the vacuum pump,
(Fig 26), which allows for vacuum adjustment from
completely off to completely on. General settings for
the bleeder valve are half open for 20# stock, and
closed for 80# and heavier stock. If your machine
is feeding doubles, this can be opened slightly to
“relieve” some of the vacuum and stop the double
feeding.
Separator Guide Lock
Set Screw
Air Blast
Openings
12
Fig 25
Fig 26