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Hersteller: DeWalt Dateigröße: 495.75 kb Dateiname: e466b10d-b563-4b13-8c2c-fb0f1b37b82a.pdf Unterrichtssprache:

Drilling WARNING: To reduce the risk of personal injury, ALWAYS ensure workpiece is anchored or clamped firmly. If drilling thin material, use a wood “back-up” block to prevent damage to the material. 1. Use sharp drill bits only. For WOOD, use twist drill bits, spade bits, power auger bits, or hole saws. For METAL, use steel twist drill bits or hole saws. For MASONRY, such as brick, cement, cinder block, etc., use carbide-tipped bits rated for percussion drilling. 2. Always apply pressure in a straight line with the bit. Use enough pressure to keep drill biting, but do not push hard enough to stall the motor or deflect the bit. 3. Hold tool firmly with both hands to control the twisting action of the drill. 4. IF DRILL STALLS, it is usually because it is being overloaded or improperly used. RELEASE TRIGGER IMMEDIATELY, remove drill bit from work, and determine cause of stalling. DO NOT CLICK TRIGGER ON AND OFF IN AN ATTEMPT TO START A STALLED DRILL — THIS CAN DAMAGE THE DRILL. 5. To minimize stalling or breaking through the material, reduce pressure on drill and ease the bit through the last fractional part of the hole. 6. Keep the motor running when pulling the bit back out of a drilled hole. This will help prevent jamming. 7. With variable speed drills there is no need to center punch the point to be drilled. Use a slow speed to start the hole and accelerate by squeezing the trigger harder when the hole is deep enough to drill without the bit skipping out. DRILLING IN METAL Start drilling with slow speed and increase to full power while applying firm pressure on the tool. A smooth even flow of metal chips indicates the proper drilling rate. Use a cutting lubricant when drilling metals. The exceptions are cast iron and brass which should be drilled dry. NOTE: Large [5/16" (8 mm) to 1/2" (13 mm)] holes in steel can be made easier if a pilot hole [5/32" (4 mm) to 3/16" (5 mm)] is drilled first. DRILLING IN WOOD Start drilling with slow speed and increase to full power while applying firm pressure on the tool. Holes in wood can be made with the same twist drills used for metal. These bits may overheat unless pulled out frequently to clear chips from the flutes. Work that is apt to splinter should be backed up with a block of wood. DRILLING IN MASONRY When drilling in masonry, use carbide-tipped bits rated for percussion drilling and be certain that the bits are sharp. Use a constant and firm force on the tool to drill most effectively. A smooth, even flow of dust indicates the proper drilling rate. Bubble Level – DWD110, DWD112, DWD115 (Fig. 2) Your drill is equipped with a bubble level (C) that assists you in drilling level holes. For horizontal drilling, tilt the drill up or down as required so that the bubble floats in the center of the parallel lines drawn on the glass. When the bubble is centered between the lines, the drill is level. For vertical drilling, align the drill so that the bubble floats in the center of the bull’s-eye, (D). To assure accuracy, first place a level on your work piece and position it so that it is level. Then, when the drill reads level, the two will be aligned. (Any bubble level can only indicate level to the earth’s surface). NOTE: The fluid in the bubble level vial is mineral spirits. If the mineral spirits gets into your eyes, flush eyes with water. If irritation occurs, seek medical attention. If the vial fluid comes into contact with your skin, remove contaminated clothing and remove excess fluid. Rinse thoroughly with water followed by washing with soap and water. If irritation occurs, seek medical attention. If vial fluid is inhaled, immediately get fresh air. If difficulty breathing, seek medical attention. Keyless Chuck – D21007, D21008, D21009, DWD110, DWD115 (Fig. 3) Your tool features a keyless chuck (E) for greater convenience. To insert a drill bit or other accessory, follow the steps listed below. 1. Grasp the rear half of the chuck with one hand and use your other hand to rotate the front half counterclockwise, as shown in Figure 3. Rotate far enough so that the chuck opens sufficiently to accept the desired accessory. 2. Insert the bit or other accessory about 3/4" (19 mm) into the chuck and tighten securely by holding the rear half of the chuck and ro...

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