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Cleaning
Take a few minutes at the end of each day to wipe off accumulations of paper dust. Cover your machine when
not in use. These practices will keep your machine clean and in tip-top operating condition.
Rollers
Keep fold rollers clean. Most folding problems are the result of material accumulations on the fold rollers.
Although designed to minimize accumulations, over a period of time, ink and dust buildup will prevent the rollers
from gripping the stock evenly. Rollers must be cleaned on a regular basis to maintain optimum
folding performance.
WARNING: Always disconnect the power cord before cleaning! Rollers have a strong grip.
Keep tools, clothing, hair and cleaning rags away from rollers. Severe injuries and machine
damage could result from items being caught in rollers. Do not operate folder with guards or fold
plates removed.
Disconnect the power, remove the fold plates and clean rollers with blanket wash (not type wash) or a commer-
cial product designed for the type of rollers your machine is equipped with. Turn the rollers with the handwheel
never attempt to clean rollers with the machine running – see Warning above.
Check rollers periodically for wear. During normal use fold rollers will gradually wear. Worn rollers will be evident
by increased setup times, increased spoilage, inaccurate folding, and inability to control the sheet. If one or more
of these conditions are noted, contact your authorized Challenge folder dealer to inquire about inspection and/or
possible roller replacement.
Vacuum Pump–Compressor
Filters – Because the printing process produces large
amounts of paper dust as well as offset powder, regular
inspection and cleaning of pump filters is an important
part of folder maintenance. Filters should be removed,
(fig. 43), and blown out at least weekly, more if you are
running large, long-run jobs. Filters should be washed
periodically with a cleaning solvent and dried thoroughly
before replacement.
If filters become difficult to clean or deteriorate, they
should be replaced immediately. Replace any filters
which become contaminated with oil or grease.
Pump Vanes – To prevent dirt and dust buildup from
causing the pump vanes to stick or break, the pump
should be flushed periodically. Use a nonflammable
safety solvent. Remove the hoses, disconnect the fil-
ters and pour several teaspoons of solvent through
the intake into a rag held over the opposite side.
Pump Lubrication – Your Challenge folder uses an oil-less pump and motor. Do Not Attempt to lubricate the
pump or motor.
F.669-D/820-870/Jan 98
MAINTENANCE
Filter Caps
(fig. 43)
25
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