Martin Yale 959, Installation, Operation & Maintenance Instructions Manual

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6.5 Wrinkling Paper
Retarder Adjusted Too Tight
See Section 3.1.
Feed Roller Clutch
See Section 6.2.
Worn Folding Rollers
Remove the feed table and the fold tables. Rotate the
handwheel slowly and visually inspect for gaps
between all the rollers. Any gap between the 2nd and
3rd or 3rd and 4th rollers indicates worn-out rollers or
worn-out folding roller springs. A gap on the operators'
side between the 1st and 2nd roller may only indicate
the need for Angular Control Adjustment, see section
5.1.
6.6 Paper Jams On Exit Table
Stacking Wheels Seized
Insure that wheels rotate freely.
Stacking Wheel Or Deflector In Wrong Position
See Section 3.7.
Accessory Shaft Guide Rollers
See Section 3.11.
Conveyor Belts Not Turning
Check conveyor drive belt and belt tension rollers.
Stacking Wheel Mis-adjusted
This is characterized by a jam on the exit conveyor
that backs up into folding machine. See section 3.7.
Paper Sticks To Perforating Wheel
Install stripper provided and illustrated in Fig. 13.
See Section 3.12.9.
6.7 Paper Folds Are Crooked
Paper Out Of Square
The fold table paper stops can be adjusted to compen-
sate for slightly out-of-square paper. See section
3.2.1.
Paper Guides Loose
Adjust opening until a single sheet of paper has no
more than 1/32" clearance when placed at the bottom
of paper guides.
Paper Not Cut Parallel
Lay a single sheet of paper at the bottom of paper
guides, and adjust one paper guide to compensate for
this.
Note: One paper guide must be kept perpendicular to the fold-
ing rolls.
Dirty Rollers
See Section 4.1.
6.8 Poor Perforating, Slitting or Scoring
The Cutting Wheel Is Not Tight Against Or Is On The
Wrong Side Of The Backup Hub.
See Section 3.12.
The Cutting Wheel Or Backup Hub Is Dull.
Replace parts if necessary.
The Accessory Shaft Spring Is Worn Causing Shallow
Perforations.
Replace spring if necessary.
The Accessory Shaft Journals Are Not Properly
Installed
See section 2.0.
The Accessory Shaft Guide Rollers Are Improperly
Located
See section 3.11.
Scoring Cuts Through Paper - Caused by the scoring roll
too sharp (sand lightly) or by the scoring roll not centered
in the groove of the backup hub.
6.9 Perforating, Slitting or Scoring Not
Parallel with Edge of Paper
See Section 5.3.
The Paper Is Not Cut Square Or Parallel.
The paper guides are not perpendicular to the fold
roller.
The Paper Guides Are Too Loose.
See Section 3.11.
Accessory Feed Rubber
Rollers are worn or are not contacting paper as it
passes between accessory shafts.
The Fold Roller Angular Adjustment Is Off
See Section 5.1 (Fig. 14).
6.10 Marks On Paper
Excessive Dirt or Ink On Machine
Insure that no ink or dirt buildup exists on feed roller
rubber, folding rollers, or rubber guide rollers on
accessory shaft.
Ink Is Not Dry
Paper printed with rubber-based inks and glycerin-
based fountain solutions that do not require overnight
press clean-up generally will not fully dry for some
period of time. Wet ink will “smudge” as the printed
stock is rubbed against each other at the retarder roll.
Proper ink chemistry and drying time can reduce this
problem. Also, humidity greatly affects drying time.