Adjusting the Sanding Thickness
To set the sanding height to the required thickness, use the crank handwheel (A & B) Fig.7.
Turning the handwheel clockwise will raise the conveyor table up towards the sanding
drum. Turning the handwheel counterclockwise will lower the conveyor table.
Depth setting used during surface sanding of stock are adjusted by considering several
variables. The hardness of the material, the width of the material and the conveyor belt feed
speed are all considered when determining the amount of material to be removed on each
pass.
Never remove more than 1/64” of material in one pass.
The variable feed rate is
set to prevent burning and provide a smooth sanded surface on different types and widths
of materials. As a general rule, 1/4 turn of the crank shaft handwheel or 1/64” or less is
recommended for coarser grits and softer woods, while 1/8 turn or 1/128” may be more
desirable with harder woods and/or finer grits. When selecting conveyor belt feed rate,
consider the width of your stock, the wider the material, the lower the feed rate must be.
Similarly, the harder the material, the slower the feed rate.
When the height thickness is unknown, set the workpiece to be sanded on the conveyor
belt, under the sanding drum. Raise the conveyor table until the sanding drum contacts the
workpiece, observe the depth scale (A) Fig.8 on the front of the machine, the depth scale
indicator (B) will indicate the thickness of the present position.
Conveyor Belt Tension and Tracking
The conveyor belt tension and tracking adjustments are controlled by adjustment screws
(A) and hex. nuts (B) Fig.9 located at the rear of the conveyor belt assembly. If the
conveyor belt is too loose or tracks off to one side, adjust as follows:
If the conveyor belt is slipping, then the conveyor belt tension needs to be increased. Adjust
adjustment screw (A) Fig.9 on both sides of the conveyor while holding the hex. nut (B) in
place using an open end wrench.Turn both adjustment screws (A) clockwise (even amount
of turns on both sides) to tension conveyor belt.
If the conveyor belt is not tracking properly, then an adjustment is needed.Conveyor belt
tracking adjustments must be made while the conveyor belt is running. If the conveyor belt
tracks toward the right side, turn the adjustment screw located on the right side clockwise
(while holding the hex. nut (B) in place using an open end wrench), this will make the
conveyor belt move to the left. Once this adjustment is done, continue to run the conveyor
for approximately 10 minutes to observe the tracking adjustment you made. Be patient, the
belt tracks slowly. If the conveyor belt tracks too far to the left, readjust adjustment screw
located on the right side, turning this adjustment screw counterclockwise will move the
conveyor belt to the right.
Adjusting Spring Tension of Pressure Rollers
The spring tension of the infeed pressure roller (A) Fig.10 and outfeed pressure roller (B)
can be adjusted to reduce snipe. To adjust the spring tension of the pressure rollers;
Unlatch and lift the sanding drum cover. Adjust the spring tension adjustment pan hd
screws (A) Fig.11 at both ends of each pressure roller. Turn the adjustment pan hd screws
clockwise to increase the pressure roller spring tension or counterclockwise to decrease
the pressure roller spring tension.
Increasing the tension will increase the pressure of the board on the conveyor belt, but will
also be less forgiving of irregularities in the board and could cause jamming. You will need
to determine experimentally the optimal tension for your stock. Once the adjustment has
been made, lower and lock the sanding drum cover.
Figure 7
ADJUSTMENTS
Figure 8
Figure 9
Figure 10
Figure 11