Woodstock W1737 - Manual (Page 35)

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W1737/W1738 Owner's Manual (Mfg. 10/09+)
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Figure 52. Gauge boards placed under
pressure rollers.
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 set
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 37" long and
uniform in thickness.
3. Connect the air pressure and set it to 70 PSI.
4. Install the sanding belt and turn the belt tensioning
knob to the 12:00 position to tension the belt. See
Figure 51.
5. Position each board on each side of the conveyor
belt and directly below the front and back pressure
rollers. See Figure 52.
6. Loosen the adjustment jam nuts and raise the
pressure rollers above the sanding belt roller with
the adjustment bolts shown in Figure 51.
7. Raise the table up until the boards barely touch the
sanding belt.
8. Turn the table-height handwheel counterclockwise
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 counterclockwise
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
Adjustor Bolt
and Jam Nut
Figure 51. Belt and pressure roller
adjustments.