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Trouble Probable Cause Remedy
Conveyor belt tracks
to one side, or
oscillates from side to
side.
Conveyor belt out of adjustment. Readjust conveyor belt; see page 15.
Drive or driven roller needs adjusting. Readjust; see page 16.
Conveyor belt worn or defective.
Replace conveyor belt; see pages 15
and 16.
Drive roller worn, bent, or varies in
diameter side to side.
Replace drive roller.
Roller bushings elongated due to
excessive wear.
Replace bushings.
Abrasive strip is
loose.
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.
Strip not cut properly.
Re-cut and re-install abrasive strip.
See pages 11 and 12.
Abrasive loads up
prematurely.
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.
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
19.
Knocking sound while
running.
Bearing(s) out of alignment. Re-align bearings.
Dust in drum. Remove material inside drum.
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.
Drum bearing(s) worn. Replace drum bearing(s).