Jet Tools Drum Sander operating instructions Trouble

Trouble

Conveyor belt tracks to one side, or oscillates from side to side.

Abrasive strip is loose.

Abrasive loads up prematurely.

Table height adjustment works improperly.

Knocking sound while running.

Probable Cause	Remedy
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	Replace drive roller.
diameter side to side.
Roller bushings elongated due to	Replace bushings.
excessive wear.
Strip caught on inside edge of slot, or	Re-adjust the strip end in the slot
on inboard side of drum.	and/or trim the abrasive edge.
Strip not cut properly.	Re-cut and re-install abrasive strip.
	See pages 11 and 12.
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.
Improper adjustment of height control.	Readjust height control. See pages
	19.
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	Insert abrasive strip, or replace
(without abrasive strip in place).	fastener.
Drum bearing(s) worn.	Replace drum bearing(s).

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