valutazioni - 3, GPA: 3.3
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Facilità d'uso
Try to avoid over- adjustments. Conveyor Belt Replacement 1. To replace a worn conveyor belt, raise drum to highest position. Unplug machine from power source and unplug motor cord from control box receptacle. 2. Adjust conveyor take-up screw nuts (Figure 22) to relieve belt tension. Figure 21 (repeated) Figure 22 16 3. Remove the four bolts attaching conveyor assembly to base. Lift up and slide conveyor out to the side of the machine. 4. Set conveyor on motor side and slide conveyor belt off the end of the conveyor bed. 5. Reverse process for installation of new belt. Sanding Drum Alignment The sanding drum must be aligned parallel to the conveyor bed for proper machine operation. The sanding drum comes preset from the factory. If a problem with the drum alignment occurs, follow the instructions below. First inspect the alignment with a gauge of some kind. The following procedure uses a steel straight edge as a gauge. 1. Unplug sander from power source. 2. Open the dust cover and remove the abrasive strip from the drum. 3. Insert the gauge between the drum and conveyor bed at the outer end of the drum (Figure 23). With the dust cover open, lower sanding drum while slowly rotating drum by hand until the drum lightly contacts the thickness gauge. 4. Remove thickness gauge and place under drum at the other end (Figure 24). If the drum does not contact the thickness gauge to the same degree as the opposite end of the drum, alignment is necessary. To align the drum: 1. Loosen the four 3/8” hex cap screws – two front, two rear (A, Figure 25). This allows the entire drum carriage and shroud to be pivoted on two screws – one screw in front, one in back. 2. Lay the thickness gauge under the drum lengthwise (Figure 26). Rotate the fine tune adjustment knob (B, Figure 25) until the drum contacts the gauge equally along its entire surface. Rotate the knob clockwise to raise the outboard end of the drum, counterclockwise to lower the outboard end of the drum. Use the height adjustment handle to raise or lower the entire drum. 3. When drum is parallel to conveyor, tighten the four screws (A, Figure 25). 17 Figure 23 Figure 24 Figure 25 Figure 26 Fine-Tuning Drum Alignment (for sanding boards wider than the drum) NOTE: Perform this alignment after you are familiar with sander operation. This is an operational test. When sanding boards wider than the drum, drum alignment is critical and must be exactly level to slightly high on the outboard end to prevent ridges from forming on the board. Always check this on a piece of scrap wood, as follows, before sanding the work piece. 1. Test alignment with scrap wood roughly 6 inches wide and 20 to 30 inches long. Install abrasive, turn on sander, and pass the board through the sander sideways so that the end of the board extends beyond the end of the drum. 2. Without changing drum height, rotate the board 180° and sand the same side. 3. If a ridge is visible where the drum overlaps, loosen the four screws (A, Figure 27) and raise the outboard end of drum by turning the fine tune adjustment knob (B, Figure 27) slightly clockwise. Re-tighten the four screws. 4. Repeat process until the ridge is eliminated, and the entire board is sanded. NOTE: Keep track of how many revolutions of the fine tune knob are needed to change drum alignment for wider (over 16”) sanding. When sanding narrow stock (less than 16”) loosen the four screws (A, Figure 27) and turn fine tune adjustment knob counterclockwise same amount as initial wide sanding until drum is again parallel. Important: Only turn fine tune adjustment knob when all four screws (A, Figure 27) are loose. Drum Height Control Adjustment If the height control mechanism does not operate easily or smoothly, or there is excessive vertical movement or deflection of the drum carriage, perform the following adjustments: 1. With a 1/8” wrench, adjust all four studs by tightening the lock nuts (Figure 28), then loosening them 1/8 to 1/4 turn. If the lock nuts are set too tight, height control will not operate easily. If the lock nuts are too loose, excessive deflection of the outboard end of the drum carriage will result. 2. Apply lubricant to front and rear areas of motor mount slide. 3. Push height adjustment handle (Figure 28) downward to set firmly on housing. Figure 27 Figure 28 18 4. Loosen set screws on collar (Figure 28). 5. Slide collar upward against housing so that all vertical free-play of height adjustment screw is eliminated. An easy method of doing this is to use a block of wood on top of the motor mount slide and under the collar, while lowering the drum with the height adjustment handle. Lubricate around washers beneath handle and above collar. Tension Roller Alignment The infeed and outfeed rollers are tensioned to provide downward pressure on the workpiece to prevent slippage on the feed conveyor. Tension rollers are set at the factory, but should be inspected and may require adjustment as the sander receives use. Improperly adj...
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