Évaluations - 4, GPA: 3.5
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Facilité d'utilisation
DRILLING METAL There are two rules for drilling hard materials. First, the harder the material, the greater the pressure you need to apply to the tool. Second, the harder the material, the slower the speed. Here are a couple of tips for drilling in metal. Lubricate the tip of the bit occasionally with cutting oil except when drilling soft metals such as aluminum, copper or cast iron. If the hole to be drilled is fairly large, drill a smaller hole first, then enlarge to the required size, it’s often faster in the long run. Maintain enough pressure to assure that the bit does not just spin in the hole. This will dull the bit and greatly shorten its life. DRILLING MASONRY Soft materials such as brick are relatively easy to drill. Concrete however, will require much more pressure to keep the bit from spinning. Be sure to use carbide tip bits for all masonry work. !WARNING Before using an accessory, result in wire breakage and shortened brush be certain that its maximum life. safe operating speed is not exceeded by the nameplate speed of the tool. Do not exceed the recommended wheel diameter. SANDING AND POLISHING Fine sanding and polishing require “touch”. Select the most efficient speed. When using polishing bonnets, always be sure the excess string that secures the bonnet is tucked well within the bonnet during operation. WIRE BRUSHES Work with brushes requires high speeds. BRUSHING PRESSURE 1. Remember, the tips of a wire brush do the work. Operate the brush with the lightest pressure so only the tips of the wire come in contact with the work. 2. If heavier pressures are used, the wires will be overstressed, resulting in a wiping action; and if this is continued, the life of the brush will be shortened due to wire fatigue. 3. Apply the brush to the work in such a way that as much of the brush face as possible is in full contact with the work. Applying the side or edge of the brush to the work will CORRECT: Wire tips doing the work. INCORRECT: Excessive pressure can cause wire breakage. RUNNING NUTS AND BOLTS Variable speed control must be used with caution for driving nuts and bolts with socket set attachments. The technique is to start slowly, increasing speed as the nut or bolt runs down. Set the nut or bolt snugly by slowing the drill to a stop. If this procedure is not followed, the tool will have a tendency to torque or twist in your hands when the nut or bolt seats. -14 BM 2610944508 11-06 12/1/06 3:29 PM Page 15 Maintenance Service NO USER SERVICEABLE PARTS INSIDE, except for the replaceable carbon brushes. Preventive maintenance performed by unauthorized personnel may result in misplacing of internal wires and components which could cause serious hazard. We recommend that all tool service be performed by a Bosch Factory Service Center or Authorized Bosch Service Station. SERVICEMEN: Disconnect tool and/or charger from power source before servicing. !WARNING BATTERIES Be alert for battery packs that are nearing their end of life. If you notice decreased tool performance or significantly shorter running time between charges then it is time to replace the battery pack. Failure to do so can cause the tool to operate improperly or damage the charger. TOOL LUBRICATION Your Bosch tool has been properly lubricated and is ready for use. D.C. MOTORS The motor in your tool has been engineered for many hours of dependable service. To maintain peak efficiency of the motor, we recommend it be examined every six months. Only a genuine Bosch replacement motor specially designed for your tool should be used. CARBON BRUSHES The brushes and commutator in your tool have been engineered for many hours of dependable service. If your tool runs sporadically, loses power, makes unusual noises or runs at a reduced speed, check the brushes. To continue using the tool in this condition will permanently damage your tool. Check both brushes. Usually the brushes will not wear out simultaneously. If one brush is worn out, replace both brushes. To check brushes: Disconnect battery pack from tool. Remove brush cover at the rear part of housing by loosening screws (Fig. 9). FIG. 9 BRUSH HOLDER BRUSH COVER Insert a screwdriver or similar object into the red notch of the carbon brush and lift out the brushes; note which way they face, so that the brushes can be returned to their original position. Clean the brush holder openings with compressed air or a clean cloth and replace the brushes and brush covers. After replacing brushes the tool should be run at no-load and run it freely at full speed for 2 minutes before using the tool. This will allow the brushes to “seat” properly and will give you more hours of life from each set of brushes. Only genuine Bosch replacement brushes specially designed for your tool should be used. Cleaning To avoid accidents, always disconnect the tool and/or charger from the power supply before cleaning. The tool may be cleaned most effectively with compressed dry air. Always wear safety goggles when cleanin...