Martin Yale 959AF, Installation, Maintenance & Operating Instructions

Page: 10 / 20

per-inch perforating wheel, and two rubber guide rollers on the
upper accessory shaft. On the lower shaft are two backup hubs,
and two steel guide rollers. An optional slitter, and 3-tooth and
14-tooth perforator are available as options.
The rubber and steel guide rollers control the paper as it exits
the folding rollers and help guide the material onto the convey-
or table. The rollers should always be positioned with their
outer edges approximately 1/4" from the paper margins.
NOTE: Failure to set the guide rollers correctly may
cause inaccurate scoring, slitting, or perforating.
It is important to set the backup hubs to
the intended scoring, slitting, or perforat-
ing operation. The slitting or perforating
wheels should be set to the machined
(sharpened) side of the hub, opposite
from the “V” groove. The high point of
the scoring wheel(s) should be aligned in
the “V” grooves of the backup hub(s).
(See Figure 13.)
CAUTION: Failure to correctly set the perforating,
scoring, or slitting wheels with the backup hubs may
cause permanent damage to the accessories.
To engage the perforating, slitting, or scoring rollers, follow this
procedure.
1. Mark a sheet of paper at the point to be perforated, scored,
or slit.
2. Set the feed table paper guides so the marked sheet slides
freely down between the guides without excessive side play.
NOTE: To ensure consistency when perforating,
scoring, or slitting, the feed table paper guides must
be set correctly.
3. Remove the first/upper fold table and stacking wheel assem-
bly.
4. Turn on the pump motor switch and with the hand wheel,
manually feed the sheet through the folder until the marked
edge extends to the upper accessory shaft. (Turn off the
pump motor switch after the sheet enters the first folding
roller.)
5. Set the perforator or the slitting wheel by loosening the set
screw with the provided hex key wrench. Align the perfora-
tor or slitter to the mark(s) on the paper and tighten the set
screw(s) on the flat part of the shaft. Loosen the set screw in
the backup hub(s) on the lower accessory shaft. Slide the
machined (sharpened) side of the backup hub(s) against the
perforating or slitting blade. Hold the hub(s) against the
blades and lock the hubs into position on the flat part of the
shaft.
CAUTION: Failure to lock the accessories into posi-
tion on the flat part of the upper and lower accessory
shafts may damage the shafts and prevent free lateral
movement of the accessories.
6. Set the scoring roller by loosening the set screw with the
provided hex key wrench. Align the scoring roller(s) to the
mark(s) on the sheet of paper and lock into position on the
flat part of the accessory shaft. Loosen the set screw in the
backup hub(s). Disengage the lower accessory shaft journal
by rotating the journal a fraction of a turn counterclockwise,
and pulling the journal out of the shaft. (If the journal is dif-
ficult to remove, place the hex key wrench through the hole
in the journal and pull out.) Slide the backup hub(s) until the
grooved part of the backup hub(s) aligns with the point on
the scoring wheel(s). Engage and lock the lower accessory
shaft journal by aligning the shaft and journal, reinserting
the journal into the accessory shaft and rotating clockwise.
7. Set the upper and lower paper guide rollers 1/4" from the
paper margins.
8. Install the stacking wheel assembly. For sheets up to 12"
long, the rollers of the stacking wheel assembly should rest
on the conveyor table. For sheets longer than 12", the stack-
ing wheel shaft should be lifted and placed into the stacking
shaft hook. The hook is located on the 1/2" tie rod, below
the first/upper fold table.
9. Place both the first/upper and second/lower fold tables into
position with the closed/deflector end toward the folding
rollers. (This allows the paper to travel through the machine
without being folded.) As the sheet moves between the
upper and lower accessory shafts, the perforating, scoring,
or slitting is facilitated. The sheet then exits onto the con-
veyor table.
Lightweight papers may wrap around the wheel when perforat-
ing. On these occasions, simply install the stripper wire around
the wheel. The stripper wire (which resembles a large safety
pin) is located on the 1/2" tie rod below the first/upper fold
table. To install the wire, remove it from the tie rod and place
the open end around the left and right side of the perforator.
Loosen the two retaining screws and remove the deflector plate
from the stacking wheel cross shaft. Retighten the two screws.
Place the stacking wheel assembly into the inner hole position
in the machine side frames. Close the stripper wire around the
shaft. (See Figure 14.)
NOTE: If the paper is cut through during the scoring
process, round off the point of the scoring roller with
a fine file or emery.
4.5 Start-Up
This procedure assumes the folder is correctly set up for fold-
ing, perforating, scoring, or slitting. If not, follow the appropri-
10
Fig. 14
Fig. 13