C.P.Bourg BB3001, Operator'S Manual

Page: 37 / 51

4. MECHANICAL TROUBLE SHOOTING
Operator Manual
Page 9 - 37
Initial issue: 12/00
Latest revision: 11/01
Symptom
The cover is not square on
the paper offset (skewed).
The cover is too far on
the right.
The cover is too far on
the left.
There is not enough glue
on the back of the book.
The pages are warped
where the glue is applied
(spread out).
The covers suffer from
nail head.
There is poor ejection
and nipping.
The book buckles
when cover is applied.
The cover does not show
a sharp crease on
the spine.
Probable cause
The cover is not cut square.
The cover station and
paper pile are not square to
the machine.
The glue spreader is too
high.
The paper is too weak for
milling.
The cover nipping is too
hard.
The cover is too weak for
the paper in the nippers.
There is glue on the exit
slide and nippers.
The book is too thin for the
cover weight.
The card is heavy and the
covers varnished.
Cover cross grained.
Remedy
Check the covers.
Check the squareness
with respect to the nippers.
Adjust the cover station stop
to the left.
Adjust the cover station stop
to the right.
Check the glue spreader.
Check the cutter.
Check the paper quality.
Check the pressure.
Check the cover material.
Remove the glue.
Select a lighter cover
Crease the covers.