ADJUSTMENTS
-21-
Figure 22.
Pressure roller adjustment spring.
Figure 23.
Motor mount adjustment nuts.
Pressure Roller
Tension
Pressure roller tension is the downward force
that the pressure rollers place on the workpiece
as it passes through the sander. Too little ten-
sion will cause the workpiece to pass unevenly
through the sander and may launch the work-
piece from the sander. Too much tension may
cause poor and inconsistent sanding results, as
well as premature wear on the conveyor belt.
A
djust the pressure roller tension as follows:
1.
Unplug the sander from the power!
2.
Verify that the pressure roller depth is set
correctly.
3.
Open both access doors on the upper part of
the sander and locate the tension springs
shown in
Figure 22
.
4.
The position of the nut on the adjustment
bolt controls the spring tension. Turn the
nut clockwise to increase the tension and
counterclockwise to decrease the tension.
V-Belt Tension
The V-belts that drive the sanding rollers must
be tensioned properly for best performance.
Tension the V-belts as follows:
1.
Unplug the sander from the power!
2.
Remove the cover on the right-hand side of
the lower portion of the sander.
3.
The two nuts shown in
Figure 23
are
responsible for adjusting the V-belt tension.
Turn both nuts clockwise to tighten the V-
belts, or turn both nuts counterclockwise to
loosen the V-belts.
4.
The V-belt is properly tightened when it will
move no more than
3
⁄
4
" in the center with
moderate pressure from your thumb.
