Dewalt DCG413B Instruction Manual - Page 16

English Spindle Lock Button (Fig. K) The spindle lock button 3 is provided to prevent the spindle from rotating when installing or removing wheels. Operate the spindle lock only when the tool is turned off, when the battery has been removed, and has come to a complete stop. NOTICE: To reduce the risk of damage to the tool, do not engage the spindle lock while the tool is operating. Damage to the tool will result and attached accessory may spin off possibly resulting in injury. To engage the lock, depress the spindle lock button 3 and rotate the spindle until you are unable to rotate the spindle further. Fig. K 3 Surface Grinding, Sanding and Wire Brushing (Fig. L) CAUTION: Always use the correct guard per the instructions in this manual. To perform work on the surface of a workpiece: 1. Allow the tool to reach full speed before touching the tool to the work surface. 2. Apply minimum pressure to the work surface, allowing the tool to operate at high speed. Material removal rate is greatest when the tool operates at high speed. Fig. L 3. Maintain an appropriate angle between the tool and work surface. Refer to the chart according to particular function. Function Angle Grinding 20˚-30˚ Sanding with Flap Disc 5˚-10˚ Sanding with Backing Pad 5˚-15˚ Wire Brushing 5˚-10˚ 4. Maintain contact between the edge of the wheel and the work surface. -- If grinding, sanding with flap discs or wire brushing move the tool continuously in a forward and 14 back motion to avoid creating gouges in the work surface. -- If sanding with a backing pad, move the tool constantly in a straight line to prevent burning and swirling of work surface. NOTE: Allowing the tool to rest on the work surface without moving will damage the work piece. 5. Remove the tool from work surface before turning tool off. Allow the tool to stop rotating before laying it down. CAUTION: Use extra care when working over an edge, as a sudden sharp movement of grinder may be experienced. Precautions To Take When Working on a Painted Workpiece 1. Sanding or wire brushing of lead based paint is NOT RECOMMENDED due to the difficulty of controlling the contaminated dust. The greatest danger of lead poisoning is to children and pregnant women. 2. Since it is difficult to identify whether or not a paint contains lead without a chemical analysis, we recommend the following precautions when sanding any paint: Personal Safety 1. No children or pregnant women should enter the work area where the paint sanding or wire brushing is being done until all clean up is completed. 2. A dust mask or respirator should be worn by all persons entering the work area. The filter should be replaced daily or whenever the wearer has difficulty breathing. NOTE: Only those dust masks suitable for working with lead paint dust and fumes should be used. Ordinary painting masks do not offer this protection. See your local hardware dealer for the proper NIOSHapproved mask. 3. NO EATING, DRINKING or SMOKING should be done in the work area to prevent ingesting contaminated paint particles. Workers should wash and clean up BEFORE eating, drinking or smoking. Articles of food, drink, or smoking should not be left in the work area where dust would settle on them. Environmental Safety 1. Paint should be removed in such a manner as to minimize the amount of dust generated. 2. Areas where paint removal is occurring should be sealed with plastic sheeting of 4 mils thickness. 3. Sanding should be done in a manner to reduce tracking of paint dust outside the work area. Cleaning and Disposal 1. All surfaces in the work area should be vacuumed and thoroughly cleaned daily for the duration of the sanding project. Vacuum filter bags should be changed frequently. 2. Plastic drop cloths should be gathered up and disposed of along with any dust chips or other removal debris. They should be placed in sealed refuse receptacles and disposed of through regular trash pick-up procedures.