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G0449/G0450 37" Drum Sander
Variable Speed
The variable speed knob allows you to increase
the feed rate from 6–18 FPM. The correct speed
to use depends on the type of stock you are using
(hardwood vs. softwood) and the stage of finish
you are at with that workpiece.
As a general rule, a slower feed rate will sand
the surface smoother, but runs the risk of burning
the wood; a faster feed rate will remove material
faster, but runs the risk of overloading the motor.
Use trial-and-error to determine the best settings
for your specific applications.
To adjust the conveyor speed:
1. Start the conveyor (DO NOT adjust conveyor
speed when the conveyor motor is
OFF).
DO NOT sand more than one board at a time.
Minor variations in thickness can cause one
board to be propelled by the rapidly spinning
sanding drum and ejected from the machine.
NEVER stand directly in front of the outfeed
area of the machine. Failure to do so could
result in severe personal injury.
The digital readout displays the combined amper
-
age draw of the motors. The number on the digital
readout increases when a load is placed on the
machine. Use this meter to avoid pushing your
machine to its maximum load; instead of maxing
out your machine, make multiple passes or install
a coarser grit paper. Since various types of wood
will cause different loads, use trial-and-error to
determine the best settings for your application.
G0449 Maximum Amp Load .......................
47A
G0450 Maximum Amp Load at 220V .........
39A
G0450 Maximum Amp Load at 440V .........
20A
To sand a workpiece:
1. Adjust the table height according to the
instructions in Depth of Cut
on Page 21.
2. Start the dust collector, the drum motor, and
the feed motor.
3. Feed the workpiece through the sander and
monitor the amp meter; if it approaches the
maximum amp load, lower the conveyor
table. Retrieve the workpiece by standing at
the side—not at the outfeed end.
4. Run wide stock through two or three times
without adjusting the table height. Turn the
stock 180° between passes to ensure an
even cut.
Sanding
Figure 17. Variable speed knob.
NOTICE
Adjusting the variable speed when the con-
veyor motor is OFF can damage the V-belt
and the adjusting mechanism.
2. Rotate the variable speed knob (Figure 17)
counterclockwise to increase the feed speed,
or clockwise to decrease the feed speed.