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manual abstract
Wear protective gloves and eye protection when using compressed air. NOTE: Do not wash the canister with soap and water. Dust may become more firmly lodged in the pores, which will reduce dust collection. Your sander was designed to sand in small or confined areas. Its small size and light weight makes it ideal for overhead work. The dust canister rotates 360° for operator comfort and work visibility. You may grip the tool on top or around the motor housing as shown, which was contoured for that purpose. -8 BM 2610968990 11/00 11/14/00 12:26 PM Page 9 “Tool Tips” SANDING: open-coat aluminum oxide sanding discs are recommended for most wood or metal sanding applications, as this synthetic material cuts quickly and wears well. Some applications, such as plastics, glass, or stone require silicon carbide discs, which have a very sharp cutting edge. For best results, use Bosch sanding and polishing accessories which are of superior quality and are carefully selected to produce professional quality results with your sander. With the workpiece firmly secured, depress switch while applying the pad to the work surface. DO NOT apply excessive pressure as this will slow the pad action, and DO NOT start the tool and bring it up to speed before applying to the work; swirl marks will result in either case. In general, higher speeds and moderate pressure will give the best results. If faster removal is desired, DO NOT INCREASE PRESSURE ON THE TOOL; use a coarser grade of abrasive. Move the sander in long sweeping strokes, parallel to the grain using some lateral motion to overlap the strokes by as much as 75%. The random orbit action allows cross-grain sanding, but be careful not to tilt the sander near edges, or undesirable rounding may result. If the surface is rough, begin with coarser grits and then complete the surfacing with medium and fine abrasives. Because the random orbit action is so effective, it is often possible to begin sanding with a medium grit disc and go directly to fine finishing. To avoid uneven results, do not skip more than one grit size when going from coarser to finer, and do not sand in one area for too long. When the job is completed, release switch, and gently lift the tool from the work surface at the same time. POLISHING: for most polishing, the soft backing pad will give the best results. The random orbit sander may be fitted with a foam buffing pad or polishing bonnet to polish or remove scratches from painted or finished surfaces, plastics, and even glass. The tool is operated in much the same way as when sanding, but the following points should be observed; Apply the compound to the surface, and use the sponge applicator pad with light pressure and a circular motion to remove scratches and restore weathered finishes. Use only as much compound as necessary, and clean the sponge frequently during use. When initial polishing is completed, wipe away any excess compound with a soft towel, and then polish the surface to its final finish with the polishing bonnet. Use smooth overlapping strokes for best results. It is important to note that the orbit speed of the random orbit sander is not the same as the RPM of a standard right-angle polisher. The random orbit action is much like a powerful hand polishing action, and therefore does not have the high speeds at the edge of the pad which can burn the work surface. For this reason, it is possible to select a higher OPM for the random orbit sander than the recommended RPM for a standard polisher. Practice on a hidden area or test surface until you have determined the tool is suitable for your polishing application. Clean the buffing pad and polishing bonnet with mild detergents and warm water. DO NOT use solvents. -9 Page 10 BM 2610968990 11/00 11/14/00 12:26 PM Maintenance Service Preventive maintenance performed by unauthorized ! WARNING 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. TOOL LUBRICATION Your Bosch tool has been properly lubricated and is ready to use. It is recommended that tools with gears be regreased with a special gear lubricant at every brush change. CARBON BRUSHES The brushes and commutator in your tool have been engineered for many hours of dependable service. To maintain peak efficiency of the motor, we recommend every two to six months the brushes be examined. Only genuine Bosch replacement brushes specially designed for your tool should be used. BEARINGS After about 300-400 hours of operation, or at every second brush change, the bearings should be replaced at Bosch Factory Service Center or Authorized Bosch Service Station. Bearings which become noisy (due to heavy load or very abrasive material cutting) should be replaced at once to avoid overheating or motor failure. Cleaning ! WARNING To avoid accidents always disconnect the tool from the power supp...