Pressure Rollers

The pressure rollers are factory set so they are parallel with each other, parallel with the sanding drum, and parallel with the surface of the conveyor table. Additionally, the front pressure rollers must be set 0.040" below the sanding drum, and the rear rollers at 0.020" below the sanding drum. When these settings are achieved, the pressure-roller spring tension will be correct.

To adjust the pressure rollers, do these steps:

1.TURN-OFF and LOCK the master power switch so no power can go to your sander!

2.Make two gauge boards that are 24" long and uniform in thickness.

3.Connect the air pressure and set it to 57 PSI.

4.Install the sanding belt and turn the belt tensioning knob to the 12:00 position to tension the belt. See Figure 17.

5.Position each board on each side of the conveyor belt and directly below the front and back pressure rollers. See Figure 18.

6.Loosen the adjustment jam nuts and raise the pressure rollers above the sanding belt roller with the adjustment bolts shown in

Figure 17.

7.Raise the table up until the boards barely touch the sanding belt.

8.Turn the table-height handwheel counter- clockwise one complete turn to lower the table approximately 0.020".

9.Lower the rear pressure rollers so that both ends barely touch the gauge boards. The rear pressure rollers are now set at 0.020" below the sanding drum.

10.Turn the table-height handwheel counter- clockwise again one complete turn, which lowers the table an additional 0.020".

11.Lower the front pressure rollers so that both ends just touch the boards. The front pressure rollers are now set at 0.040" below the sanding drum.

12.Tighten the adjustment jam nuts.

Belt

Tension

Knob

Pressure

Roller

Tension

Adjustments

and Jam Nuts

Figure 17. Belt and pressure roller adjustments.

ADJUSTMENTS

Figure 18. Gauge boards placed under pressure

rollers as a gauge.

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