Grizzly G0449 instruction manual Variable Speed Sanding, To adjust the conveyor speed

Variable Speed Sanding

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).

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.

Figure 17. Variable speed knob.

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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.

G0449/G0450 37" Drum Sander