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16
Dust Cover Latch
The dust cover latch prevents the dust cover
from accidentally opening. To release the latch,
press inward on the dust cover knob (D, Figure
21). This will cause the dust cover center to flex
and release the latch. Note that the dust cover
latch can be adjusted in or out by loosening the
screw (E, Figure 21).
Conveyor Belt Tension/Tracking
Conveyor belt tension and tracking adjustments
may occasionally be necessary during break-in
and normal operation to compensate for belt
stretching.
IMPORTANT: The conveyor belt has been over-
tensioned for shipping purposes. It must be re-
tensioned before operating the sander.
Belt Tension: To adjust the tension of the
conveyor belt, first adjust the take-up screw nut
(Figure 22) on both sides of the conveyor to
obtain approximately equal tension on both
sides of the belt when taut.
Insufficient belt tension will cause slippage of
conveyor belt on the drive roller during sanding
operation. The conveyor belt is too loose if it can
be stopped by hand pressure applied directly to
the top of the conveyor belt.
Excessive belt tension can cause tracking
problems and result in bent rollers, bent take-up
brackets, and premature wearing of the bronze
roller bearings or conveyor belt.
Belt Tracking: Adjustments to tracking are
made while the conveyor belt is running. After
the proper belt tension has been achieved, turn
on the conveyor unit and set it at the fastest
speed setting. Watch for a tendency of the
conveyor belt to drift to one side of the
conveyor. If there is drifting, tighten the take-up
screw nut (Figure 22) on the side toward which
the belt is drifting, and loosen the take-up screw
nut on the opposite side. NOTE: Adjust the take-
up screw nuts only 1/4 turn at a time. Then allow
time for the belt to react to the adjustments
before proceeding further. Try to avoid over-
adjustments.
Conveyor Belt Replacement
1. To replace a worn conveyor belt, raise drum
to highest position. Unplug machine from
power source and unplug motor cord from
control box receptacle.
2. Adjust conveyor take-up screw nuts (Figure
22) to relieve belt tension.
Figure 21 (repeated)
Figure 22