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Trouble Probable Cause Remedy
Conveyor belt out of adjustment. Readjust conveyor belt; see page 19.
Drive or driven roller needs adjusting. Readjust; see page 20.
Conveyor belt worn or defective. Replace conveyor belt; see page 20.
Drive roller worn, bent, or varies in
diameter side to side.
Replace drive roller.
Conveyor belt tracks
to one side, or
oscillates from side to
side.
Roller bushings elongated due to
excessive wear.
Replace bushings.
Strip caught on inside edge of slot, or
on inboard side of drum.
Re-adjust the strip end in the slot
and/or trim the abrasive edge.
Abrasive strip is
loose.
Strip not cut properly.
Re-cut and re-install abrasive strip.
See pages 12 and 13.
Excessive depth of cut. Reduce depth of cut.
Excessive feed rate. Reduce feed rate.
Inadequate dust collection. Increase airflow at dust port.
Inadequate abrasive. Use an open-coat abrasive.
Abrasive loads up
prematurely.
Stock fed at 90° angle to drum.
Angle stock 60° if possible to avoid
resin line buildup.
Table height
adjustment works
improperly.
Improper adjustment of height control.
Readjust height control. See pages
15 and 16.
Drum drive v-belt
slips.
Improper v-belt tension. Increase tension.
Bearing(s) out of alignment. Re-align bearings; see page 22.
V-belt worn. Replace v-belt; see page 22.
Dust in drum. Remove material inside drum.
Pulley wobbling or out of round. Replace pulley.
Set screws loose in pulley or bearing. Re-tighten set screws.
Abrasive fastener on drum loose
(without abrasive strip in place).
Insert abrasive strip, or replace
fastener.
Knocking sound while
running.
Drum bearing(s) worn.
Replace drum bearing(s); see page
23.