|
Perforator
Problem Solving Tips-n-Hints |
Problem
|
What
to look for...
|
What
should you do...
|
|
Stock
is "two sheeting"
|
a.
Caliper.
|
a.
Adjust feed caliper down to single sheet thickness.
|
Stock
does not feed or feeds very slowly
|
a.
Feed rolls may be loaded.
b.
Side guide clearance.
c.
Too much stock on feed table.
d.
Feed roll may be worn out.
|
a.
Clean glaze from feed rolls with alcohol.
b.
Loosen side guides slightly to provide proper clearance.
c.
Remove excess stock from feed tables.
d.
Replace worn out feed rolls.
|
Perforation
is straight but does not register
|
a.
Side guides may not be square.
b.
Check for excessive or tight side guide clearance.
|
a.
Readjust side guide alignment.
b.
Readjust side guides accordingly.
|
Perforation
is straight except for last 3"
|
a.
Burr rollers may not be square.
b.
Burr rollers should be used on both stock edges.
|
a.
Square burr rollers.
b.
Make sure both burr rollers are being used and spaced same distance
from sheet edge.
|
Perforation
path is "bowed"
|
a.
Check setting of both upper and lower cutter heads.
|
a.
Replace dull cutters.
|
Stock
does not deliver properly
|
a.
Delivery table angle.
b.
Speed of machine.
|
a.
Change delivery table angle.
b.
Change stock feed speed.
|
Front
edge of perforation is torn
|
a.
Check for clearance on caliper.
b.
Check for even pull on drive rolls.
c.
Side guides are too tight.
|
a.
Readjust stock backstop.
b.
Readjust drive rolls.
c.
Loosen side guides slightly to provide proper clearance.
|
Secondary
feed rolls scuffing
|
a.
Friction feed caliper.
b.
Too much stock on feed table.
|
a.
Readjust caliper.
b.
Remove excess stock from feed table.
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