Bosch 1250DEVS Operating Instructions - Page 8

MODE SELECTOR SWITCH Your tool is equipped with a mode selector switch which allows you change the removal performance of your sander. To change operating modes, press mode selector release button and turn switch until you hear it latch near desired operating symbol. ! WARNING To prevent personal injury. Do not change the mode selector switch while the sander is in operation. Operating Mode 1 This operating mode is recommended for fast material removal on very rough, insensitive surfaces as well as for buffing. Operating Mode 2 This operatng mode is recommended for sensitive surfaces as well as for fine polishing. ELECTRONIC FEEDBACK CIRCUITRY (EFC) The internal electronic feedback system provides a "soft start", which will reduce the stresses that occur from a high torque start. The system also helps to keep the no load speed virtually constant between no-load and load conditions. VARIABLE SPEED WITH DIAL SETTING Your sander is also equipped with a variable speed dial. The sander's orbital pad speed can be preset from zero to maximum nameplate OPM by rotating the dial in the housing. The dial may be set on or between any of six positions (1=low through 6=high). The following table may be used as a general guide for abrasive and backing pad selection, but the best results will be obtained by sanding a test sample of the workpiece first. Material Woods: Softwoods Hardwoods Veneers Metals: Steel Stainless Aluminum Rust spots Synthetic paint: Sanding Scratches Stripping Acrylic paint: Sanding Scratches Stripping Plastics PC/polystyrene Thermoplastics Glass fiber reinforced plastics Solid Surfaces Rough sanding Grit size 40/60 40/60 240 80/180 120 80 40 180 120 40/60 180 120 40/60 120 60 80/120 120 Fine sanding Grit size 240 180/240 320/400 400 240 240/400 120 400 220 80/120 320/400 240 80/120 240 180 240/400 180/400 Switch setting Backing pad 5-6 extra soft/soft 5-6 soft 5 extra soft/soft 5 hard 5 soft 4-5 soft 6 soft 4-5 soft 3-4 hard 5-6 soft 4-5 soft 4-5 hard 2-3 soft 3-5 extra soft/soft 1-3 soft 1-3 soft/hard 4-6 soft -8-