American Sanders American 12 Drum Sanders User Manual
Page 39
Clarke
®
American Sanders - American 12 Floor Sander Operator's Manual
Page 39
Chatter - Wave Prevention (cont)
3)
UNEVEN WALKING PACE..... can leave lengthy “waves”. The machine cuts more material during
the slower pace. Pay particular attention to a steady, even pace.
4)
EXCESSIVE LIGHT CUTS.... may reveal high spots on the paper/contact wheel and cause chatter.
Take a heavier cut and increase the pace.
5)
DEBRIS.... lodged between the paper and the drum will leave chatter. On a belt sander, debris
may be adhered to the drum. Insure the drum is clean and free of debris before placing the
paper on.
6)
SANDER PAPER QUALITY....may vary. Belt seams can be thicker on low quality paper and cause
chatter. Use only Clarke American Sanders specified sandpaper.
PROPER CARE OF YOUR MACHINE CAN MINIMIZE CHATTER AND WAVES.
1)
V-BELTS.... can cause vibration and chatter if they are of low quality. Use only belts specified by
Clarke American Sanders.
2)
TRUCK AND CASTER WHEELS....with flat spots, out-of-roundness, or debris adhered to their
surface can cause “waves” or a “chatter effect”. Always clean and inspect all wheels before
starting to sand, and before the finish cut. Replace or true the wheels if found to be out-of-
round.
3)
DUST PICK-UP SHOES.......may need adjusted differently for different materials that are to be
sanded. An improperly adjusted shoe will leave trailing debris that will be run over by the
wheels and cause “random waves”.
4)
CONTACT WHEELS (DRUMS).......may be out-of-round and cause “chatter”. Contact your Clarke
American Sanders dealer for assistance to true or replace the drum.
5)
BEARINGS......in the motor, drum, or fan system may become worn and induce vibration which
could cause “chatter”.
6)
PULLEYS.....that are damaged or severly worn can induce vibration and cause “chatter”. Contact
your Clarke American Sanders dealer for assistance.
Clarke American Sanders is not responsibile for rework of floors that are unacceptable to the
customer. It is your responsibility to insure your equipment is in proper operating order, and
that you use the right machine for the job.