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manual abstract
When servicing Double Insulated Tools, USE ONLY IDENTICAL REPLACEMENT PARTS. 8 Precautions On Using Your Pavement Breaker 1. Always wear a face mask when operating this tool. 2. Use earplugs when operating for extended periods. 3. Be sure to lock the bit holder in position. 4. The bit becomes extremely hot during operation. Avoid touching it without heavy gloves. 5. Check all screws for tightness before operation. 6. When working at elevated locations, be alert to objects and persons below. 7. Wear steel toed shoes to protect your feet from injury. Double Insulation DOUBLE-INSULATED tools are constructed throughout with TWO separate layers” of electrical insulation or one DOUBLE thickness of insulation between you and the tool’s electrical system. Tools built with this insulation system are not intended to be grounded. As a result, your tool is equipped with a two-prong plug which permits you to use extension cords without concern for maintaining a ground connection. NOTE; DOUBLE INSULATION does not take the place of normal safety precautions when operating this tool. The insulation system is for added protection against injury resulting from a possible electrical insulation failure within the tool. CAUTION: When servicing all tools, USE ONLY IDENTICAL RE- ' PLACEMENT PARTS. Repair or replace damaged cords. Applications Breaking concrete, chipping off concrete, grooving, and driving piles Prior To Operation POWER SOURCE Ensure that the power source to be utilized conforms to the power requirements specified on the product nameplate. POWER SWITCH Ensure that the power switch is in the OFF position. If the plug is connected to a power receptacle while the power switch is in the ON position, the tool will start operating immediately, inviting serious accident. 5 Extension Cords Double-insulated tools have 2 wire cords, and can be used with,2 wire or 3 wire extension cords. Only round jacketed extension cords should .be used. -If the extension will be used outside, the cord must be suitable for outdoor use. 'Any cord marked as outdoor can also be.used for indoor work. (The letters “WA” on the cord jacket indicate that the cord is suitable for outdoor use.) An extension cord must have adequate wire size (AWG or Amercian Wire Gauge) for safety, and to prevent loss of power and overheating. The smaller the gauge number of the wire, the greater the capacity of the cable, that is 14 gauge has more capacity than 16 gauge. When using more than one extension to make up the total length, be sure each individual extension contains at least the minimum wire size. To determine the minimum wire size required, refer to the chart below: ' FRONT COVER Before using an extension cord, inspect it for loose or exposed wires, damaged insulation, and defective fittings. Make any needed repairs or replace the cord if necessary. Black & Decker has extension cords available that are CSA Certified for outdoor use. CHART FOR MINIMUM WIRE SIZE (AWG) OF EXTENSION CORDS NAMEPLATE TOTAL EXTENSION CORD LENGTH-FEET RATING-AMPS 25 50 75 100 125 150 175 200 0- 10.0 18 18 16 16 14 14 12 12 10.1 - 13.0 16 16 14 14 14 12 12 . 12 13.1 - 15.0 14 14 12 12 12 12 12 — INSTALLING THE BIT 1. With the bit retainer directed backward, insert the bit shank into the hole in the front cover. (Fig-1) 2. Swing the bit retainer back into place so that it engages the bit shank and prevents bit from coming all the way out of front cover. (Fig. 2) NOTE: Use a mallet to open/ close the retainer. When removing the bit, follow the above procedure in reverse order. 6 Operation (ALWAYS WEAR EYE PROTECTION) Before turning the tool on, locate the tip of the demolition bit as desired. Rest the weight of the tool on the bit and turn the hammer on. Let the tool’s weight work to your advantage; this will be easier and more efficient. Pushing on the tool only reduces efficiency. Guide the tool, turning it off whenever changing locations in order to locate the bit at the desired, spot. 1, Squeeze the trigger switch after applying the tip of the bit to the crushing position. In some cases, it is necessary to punch the tip of the bit against the crushing position forcibly in order to begin the striking stroke. This is not due to malfunction of the tool. It means that the safe guard mechanism against no-load striking is working. 2. Operate the tool by utilizing its own weight. The performance will not be better even if the tool is pressed or thrust forcibly against the work surface. Hold the tool with a force just ' sufficient to counteract the reaction. CAUTION: Sometimes the tool does not begin the.,, striking stroke even when the motor rotates because the oil has become thick. If the tool is used at low temperatures or if it is not used for a long time, the tool should be run at no load for five minutes in order to warm it up. 7...