12
Figure 8‐1
8.4
Infeed/Outfeed Table Adjustment
(OPTIONAL)
The optional tables can be swung down to allow
easier access for abrasive wrapping or other
adjustments.
Loosen handles on each side, slide table away from
machine and then down. See Figure 8‐2.
Figure 8‐2
8.5
Conveyor belt tension/tracking
Conveyor belt tension adjustment may be necessary
during the break‐in period to compensate for belt
stretching.
8.5.1
Belt tension adjustment
1.
Unplug sander from power source.
2.
Adjust take‐up screw (Figure 8‐3) with 5mm hex
wrench. Do this on both sides of conveyor to
obtain approximately equal tension on both
sides of sanding belt when taut.
NOTE: Insufficient belt tension will cause
slippage of conveyor belt on drive roller during
sanding operation. The conveyor belt is too loose
if it can be stopped by hand pressure applied
directly to top of moving conveyor belt.
Excessive belt tension can result in bent rollers,
bent brackets, and/or premature wearing of
bushings or conveyor belt.
Figure 8‐3: belt tension adjustment
8.5.2
Tracking adjustment
A belt tracks correctly when it moves centrally on the
conveyor rollers without drifting to either side.
Tracking adjustments are made while conveyor belt is
running.
1.
Unplug sander from power source.
2.
Make sure proper belt tension has been
achieved (see
sect. 8.5.1
).
3.
Turn on conveyor and set to maximum speed.
Watch for tendency of conveyor belt to drift to
one side of conveyor. If it drifts, tighten or loosen
take‐up screw.
Note:
Adjust take‐up screw only 1/4 turn at a
time. Allow time for belt to react to adjustments
before proceeding further.
Try to avoid over adjustments, as this may affect
belt tension. If tension is affected, if may become
necessary to use both take‐up screws to
accomplish tensioning and tracking.
8.5.3
Trackers
The sander comes equipped with “Trackers”, ceramic
guides that reduce the amount of adjustments
needed to keep conveyor belt tracked (centered) on
conveyor table. These guides have a magnetic
backing to keep them in place. If a Tracker wears
through, it can be reversed by turning it over. See
sect. 11.0 Tracker Kit
for more information about re‐
setting trackers.
8.6
Inspecting drum alignment
The sanding drum must be parallel to conveyor table
for proper machine operation. The sanding drum
