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5.3.2 Paper Guide Alignment
The folder is now in a neutral position and ready to be adjusted
so sheets of paper enter correctly into the folding rollers. To
align the paper guides, follow this procedure.
1. Open the feed table paper guides to their maximum open
position.
2. Place an 11" x 17" (or A3) sheet onto the feed table and
slide the sheet down until the leading edge is between the
first and second folding rollers.
3. Carefully set the paper guides until they are within 1/16"
from the long side of the sheet.
CAUTION: At no time touch or otherwise move the
sheet out of position. Doing so may compromise the
alignment. If you suspect the sheet has moved, repeat
steps 1 through 3.
4. Observe the long axis of the guides and the sheet edge. If
they appear to be parallel, no adjustments are required.
5. If the guides are not parallel to the sheet edges, adjust one
guide at a time until they are by first loosening the hex sock-
et cap screw on the paper guide block. Move the guide until
it is parallel with the sheet edge. Do not move the sheet out
of position! Lock the guide into position by retightening the
cap screw.
6. Repeat this procedure for the other paper guide.
7. Remove the sheet from the feed table.
8. Connect the left and right paper guide air hoses.
5.3.3 The Sheet Detector Block
The next step in the alignment procedure is to align the sheet
detector block. Do so by following this procedure.
1. Loosen the hex socket set screw located on top of the sheet
detector block.
2. Place a sheet of 11" x 17" (or A3) paper onto the feed table
and set the paper guides so the sheet slides freely between
the guides without excessive side play.
3. Slide the sheet down so the front of the sheet aligns with the
target marks on the feed table. The target marks are to the
left and right of the vacuum roller.
4. Lower the sheet detector.
5. Look straight down on the target marks and move the detec-
tor block so the front of the sheet detector contacts the sheet
edge and aligns with the target marks. Also make sure the
sheet detector tips are aligned laterally with the left and right
holes in the vacuum roller. Retighten the set screw in the
sheet detector block.
5.3.4 Timing Block
Correct setting of the timing block (located on the left side of
the vacuum roller) is necessary for correct feeding. The block is
set via the turnbuckle assembly. One end of the turnbuckle
assembly is attached to the timing block and the other end is
attached to the feed table. Set the timing block according to this
procedure.
1. Make sure the front end of the timing block is in contact
with the feed table as indicated in Section 5.3.1.
2. Shorten the turnbuckle assembly by making 4 1/2 turns with
the buckle and bring the locking nuts in contact with the
buckle. Do not lock the nuts in position at this time.
3. Either by turning the vacuum roller forward by hand, or by
using the hand wheel to manually forward the machine,
align the edges of the countersunk holes in the vacuum
roller with the front of the sheet detector.
4. Place a sheet of paper over the holes in the vacuum roller.
Plug in the machine. Turn on the pump motor switch and
adjust the vacuum control knob to maximum. The sheet
should be pulled down into the vacuum roller and the vacu-
um gauge should read 20 or higher. If the gauge does not
read 20 or higher, readjust the turnbuckle in 1/4 to 1/2 turn
increments until the gauge reads 20 or higher.
5. Turn the pump motor switch off.
5.3.5 Nose Pipe
The nose pipe in the sheet detector block serves to inject air into
the leading edge of the paper stack to facilitate smooth feeding.
Check the setting of the nose pipe by following this procedure.
1. Place a 1/8" to 1/4" stack of 11" x 17" (or A3) paper onto
the feed table. Disconnect the air lines from the paper guides
and turn on the pump motor switch. Adjust the air and vacu-
um knobs to maximum. With your thumbs, block off the
paper guide air hoses. Observe the rear of the paper stack. If
the nose pipe is correctly adjusted, the bottom 3 to 6 sheets
should flutter.
2. If the sheets are not fluttering, loosen the set screw (in the
sheet detector block) that locks the nose pipe in position.
Rotate the nose pipe until the sheets flutter. Before retighten-
ing the set screw, make sure the nose pipe air holes align
with the rubber bands on the air feed roll. Reconnect the air
lines to the paper guides.
5.3.6 Feed System Test
Set the sheet detector according to instructions in Section 4.2.1.
Start the folder according to instructions in Section 4.5. When
correctly adjusted, you will hear a distinctive "swooshing"
sound as paper is feeding into the folder. (You can hear this
sound on the enclosed video presentation.) If you do not hear
the sound, adjust the turnbuckle in 1/4 to 1/2 turn increments
until the sound is produced. Turn off the machine.
5.3.7 The Feed Table Cross Shaft
The next step in machine alignment is to check positioning of
the stacking wheel cross shaft. Do so by following this proce-
dure.
1. Place the stacking wheel shaft into the stacking wheel hook.
2. Place a full stack of paper onto the feed table.
3. Turn on the speed control and set to minimum speed.
4. Turn on the pump motor switch.
5. Run two or three sheets through the machine and turn off
the speed control and pump motor switch when the trailing
end (3" to 5") of the fourth sheet is still between the paper
guides.
6. Pull back the stack of paper on the feed table and observe
the tail end of the sheet. If the sheet lays flat on the feed
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