Knife Tips - Challenge CHAMPION 370 XT Operator's Manual

10.0 Routine Maintenance/Adjustments
The following suggestions apply to those who can support only one set of knives. The bevel angle on
the knives shipped with your machine was chosen for its versatility. It is not the ideal angle for every
material, but these suggestions may improve the cut quality for those materials being cut with an
inappropriate bevel:
First, cut the softest, most pure stocks at lower clamping pressures.
Move to the harder, more pure stocks at higher pressures. You may also need to reduce pile
heights.
Softer, impure stocks are next, followed by the hard impure stocks.
Following these guidelines will decrease the frequency of knife sharpening while maintaining a quality
cut as long as possible.
Suggestions for all:
If the machine seems to strain and cut quality is still good, reduce the pile height. You may
also carefully apply glycerin to the bevel when cutting hard, coated stocks. Tie a cloth to the
end of a stick; dip the stick in glycerin, and apply. Never apply by hand! In lieu of glycerin
you may lightly rub white bar soap along the bevel. Lubrication will prolong the life of your
machine and reduce maintenance.
If the machine seems to strain and cut quality becomes unacceptable, the knife should be
changed.
Typical bevel angles vary from 26
(23 ) was chosen for your machine. If your most common applications warrant a different
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angle, careful thought should be given before making the investment.

10.1.5 Knife Tips

To prevent corrosion you received your knife coated with light oil. It should be REMOVED
WITH CARE.
While removing or installing a knife, be careful not to allow the edge to bump against the
machine. Nicks will result.
If a knife bolt is damaged, replace it.
Always keep knife bolts securely tightened.
Always use the heavy-duty knife bolt washers provided by Challenge. Failure to do so could
result in scratching or marring of the clamp face.
Store knives in a dry environment to prevent corrosion.
Never attempt to service a knife in any way.
10.2 False Clamp Plate
removing the false clamp plate. NEVER attempt to install or remove the false clamp plate while the
machine is running. Remove all tools and stand clear when reconnecting power.
To prevent marking on pressure sensitive jobs, a false clamp plate has been included (installed) with
your machine. This plate attaches to the bottom of the clamp. It is secured from the front of the
cutter with three set screws that clamp against the mounting rods on the false clamp plate.
1. DISCONNECT THE POWER AND LOCK IT OUT (See Power Lock-Out Procedure, page 5)
46
to 19 . The most appropriate general-purpose bevel angle
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ALWAYS disconnect the power and LOCK IT OUT before installing or