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Resumen del manual
2. You should see a gap between the straight edge and roller. Measure this with a feeler gauge. 3. Repeat step 1 and 2 with the straight edge positioned at the opposite edge of the platen. 4. The difference in the measurements is the amount of "twist" in the belt. Reduce the twist by adjusting one of the two tracking knobs. See Figure 16. If the "out-board" end (or the end furthest from the tracking adjustment side) of the roller measures greater than the "in-board" side, tighten the right hand tracking knob. G1183/1276 Combination Sander -15 5. With the straightedge along the edge which is low, loosen the knurled locking nut and turn the tracking knob while watching the gap change between the straight edge and the roller. Make small changes and check for a change in gap on the opposite side. 6. When the gap has been equalized between the two sides, make sure the center of the roller, or the crown, is still approximately flush or just slightly above the platen surface. Lock the adjustment knobs with the locking knobs. 7. Reinstall the belt. Move the belt by hand (DO NOT turn on the power). If the belt tracks to one side or the other, adjust the idler roller slightly by backing off the locking knobs and turning the knurled adjustment screws in or out. See Figure 16. Make very small adjustments and move the belt by hand for a few revolutions to test the result. Keep readjusting until you are satisfied the belt is tracking properly when moved by hand. 8. Lock the adjustment in place by tightening the knurled lock knobs on both adjusters. Tracking Knobs Locking Knobs Figure 16. Belt arm adjuster knobs. 9. Test the tracking by cycling the machine on and off very quickly. See if the belt stays centered during this test cycle. If the belt doesn’t remain centered on the rollers, it must be adjusted further. Moving sanding discs and belts are dangerously abrasive. Use extreme caution when working near sanding surfaces. Failure to exercise care while sanding could result in severe injury. -16- G1183/1276 Combination Sander SECTION 6: OPERATIONS The aluminum disc accepts 12" diameter cloth or paper-backed PSA sanding discs. The belt sander requires a 6" x 48" sanding belt. For disc or belt sanding, we recommend a 100-grit (medium) material for general sanding chores, a 60-grit (coarse) material for rough work, and a 150-grit (fine) surface for finish work. See the current Grizzly catalog for prices and ordering information. Please review all safety rules for sanders and all power tools before attempting operation. The hints listed below are also worth your consideration: 1. When using the table for beveled sanding operations, try to keep an open table angle (90° or more). This eliminates the risk of getting the workpiece jammed between the disc (or vertical belt) and the table. 2. The surface feet per minute of the spinning disc increases as you move from the center to the rim. 3. When belt sanding, sand with the grain of the wood. 4. Do not over-sand soft woods such as bass wood or pine. 5. Choose the correct sanding grit for the job. 6. Do not use the sander as a replacement for a bandsaw or a planer. It is designed for finish work, not rough dimensioning. 7. Keep your workpiece moving across the face of the disc or belt to prevent grooves or ruts in the surface you’re sanding. Table Tilt The belt table can be adjusted from -30° to 45° and the disc table can go from -20° to 45° relative to the plane of the sanding surface. Both tables have positive stop blocks which will quickly position the table at the 90° and 45° angles. To adjust the tilt it is sometimes necessary to swing the stop block out of the way, move the table, swing the block back in, then contact the stop block. If angles other than the preset are desired, swing the stop out of the way and use the angle scale or a bevel gauge to set to the position needed. Lock the handle (on the belt table) or the star knob (on the disc table) firmly in position. Whenever possible, sand with an open angle where there is plenty of clearance between the belt and the table. This will avoid getting the work- piece trapped between the sanding surface and the table. G1183/1276 Combination Sander -17 Disc Sanding Surface Sanding 1. Loosen table lock knob and tilt work table to desired angle. Tighten lock knob. 2. Use miter gauge to guide work into position. 3. Ease workpiece into the half of the disc that spins down toward the table. See Figure 17. To remove a large amount of material quickly from a large surface area, use the belt arm in its horizontal position. 1. Turn the sander on and let it reach its full working speed. 2. Place the workpiece flat on the belt. Be sure to hold the work securely with both hands. Place one hand at the end of the workpiece to feed it against the rotation of the belt. Place the other hand lightly on top of the workpiece to ensure adequate stock removal. See Figure 18. Figure 18. Surface sanding. Operating this equipment has the potential to ...
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