Bosch 1274DVS Operating Instructions - Page 7

Assembly REMOVING AND INSTALLING SANDING BELTS ! WARNING To prevent personal injury, always disconnect the plug from the power source before removing or installing the belt. TO REMOVE BELT: 1. Place sander upside down and move belt tension release lever in direction of arrow to retract front pulley and release belt tension. 2. With the sander upside down and the open side facing you, you can easily remove the belt. TO INSTALL BELT: 1. While the sander is still upside down, with the front pulley retracted and locked, insert the new belt around both pulleys and over the platen plate. If the sanding belt has "rotation direction" markings, be sure the arrow on the inside of belt is pointing in the direction of rotation as indicated on housing. 2. Then push lever back to its original position to return tension to the belt. FRONT PULLEY DIRECTION OF ROTATION PLATEN PLATE REAR PULLEY BELT TENSION RELEASE LEVER Operating Instructions VARIABLE SPEED CONTROLLED TRIGGER SWITCH Your sander is equipped with a variable speed trigger switch. The sander can be turned "ON" or "OFF" by squeezing or releasing the trigger. The speed can also be adjusted from, miminum to maximum nameplate rated RPM by the amount of pressure you apply on the trigger. Apply more presssure to increase speed and release pressure to decrease speed. "LOCK-ON" BUTTON ! WARNING If the "Lock-ON" button is continuously being depressed, the trigger cannot be released. VARIABLE SPEED DIAL This feature enables you to preset the trigger at desired speeds by rotating the dial on the trigger. Regardless of the pressure applied on trigger, the tool will not operate any faster than maximum preset speed. You can change the preset maximum speed simply by rotating the adjusting dial to a higher or lower speed setting. As a guideline, the following speed selections apply: Dial setting Material/Application VARIABLE SPEED TRIGGER SWITCH VARIABLE SPEED DIAL The "Lock-ON" button, located near the trigger allows continuous operation at maximum RPM without holding the trigger. TO LOCK TRIGGER ON: Squeeze trigger, depress button and release trigger. TO UNLOCK THE TRIGGER: Squeeze trigger and release it without depressing the "LockON" button. A thru C B thru D C thru E E -7- Delicate surfaces, veneers, and with sanding frame for light surface finishing Plastics or other surfaces where belt loading or heat buildup is a problem Solid wood, fast stock removal, paint removal General service, metal sanding, chipboard, coarse sanding on rough surfaces