Model G9983 (Mfg. Since 8/09)
-33-
4. With the air pressure connected, and the
sanding belt installed and tensioned, raise
the pressure rollers above the sanding belt
rollers.
5. adjust the platen to be even with the bottom
of the front sanding belt roller.
6. raise the conveyor until the boards touch the
front sanding belt roller and platen areas. the
boards should evenly touch the front sanding
belt roller and platen areas on both sides.
7. turn the conveyor handwheel counterclock-
wise
1
/
8
th of a turn. this should lower the
conveyor approximately .020" or .5mm.
8. lower each end of the pressure rollers so
they barely touch the boards. lock in place.
figure 31. this is one of the four pressure roller
adjustment bolts.
pressure roller tension is largely set by trial and
error. if there is not enough tension, the workpiece
will not pass through the sander evenly and may
possibly be launched toward the operator. if there
is too much tension, the feed belt will experience
premature wear and the workpiece will pass
through the sander sluggishly (if at all).
to adjust the pressure roller tension:
1. disConneCt sander FroM poWer!
2. Make sure the pressure roller depth is set
correctly.
3. open both access doors and locate the
pressure roller tension springs shown in
figure 31.
pressure roller
tension
4. turning the nut on the adjustment bolt clock-
wise will increase the tension and counter-
clockwise will decrease the tension.
a quick way to gauge that the spring tension is
consistent is to measure the distance from the
top of the nut to the top of the adjustment bolt. if
the board pulls to one side during sanding, loosen
that side in small increments as needed.
Summary of Contents for G9983
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