[. . . ] Hilti Corporation FL-9494 Schaan Tel. : +423 / 234 2111 Fax: +423 / 234 29 65 www. hilti. com UH 650 Bedienungsanleitung Operating instructions de en Hilti = registered trademark of Hilti Corp. , Schaan W 0000 0504 10-Pos. 1 1 Printed in Liechtenstein © 2004 Right of technical and programme changes reserved S. & O. 000000 000000/B *000000* UH 650 hammer drill It is essential that the operating instructions are read before the tool is operated for the first time. Ensure that the operating instructions are with the tool when it is given to other persons. Operating controls and parts Chuck (quick-release chuck or key-type chuck with key) Side handle with depth gauge Function selector switch 2-speed gear selector switch Forwards/reverse switch On/off switch with electronic speed control Lockbutton for sustained operation Supply cord 1. General information 1. 1 Safety notices and their meaning -CAUTIONDraws attention to a potentially dangerous situation that could lead to minor personal injury or damage to the equipment or other property. [. . . ] Failure to observe this point may result in risk of accident to the user. Do not use the supply cord for purposes for which it is not intended. Never carry the tool by the supply cord and never pull the plug out of the socket by pulling the supply cord. When working outdoors, use only extension cords that are approved and correspondingly marked for this type of use. In the event of a power failure, switch the tool off and unplug the supply cord. Avoid using extension cords with multiple sockets and the simultaneous use of several tools connected to one extension cord. Dust (especially dust from conductive materials) or dampness adhering to the surface of the tool may, under unfavorable conditions, present a risk of electric shock. Dirty or dusty electric tools should thus be checked at a Hilti service center at regular intervals, especially if used frequently for working on conductive materials. Always concentrate on the job you are doing. Tighten the side handle securely by turning the handle in a clockwise direction. 7. 2 Operation -CAUTION The tool and the drilling operation emit noise. Wear ear protection. 7. 2. 1 Quick-release chuck -NOTEUnplug the supply cord from the mains socket. Opening the quick-release chuck -NOTEIt may be necessary to rotate the chuck and spindle half a turn until the automatic spindle lock engages. Turn the chuck sleeve away from "CLOSE" (the locking mechanism will first automatically release). Opening the quick-release chuck when tightened excessively -NOTEIt may be necessary to rotate the chuck and spindle half a turn until the automatic spindle lock engages. Grip the hexagonal section of the chuck securely with a 17 mm AF ring wrench or open end wrench. Turn the chuck sleeve away from "CLOSE" (the locking mechanism will first automatically release). Keep turning the chuck sleeve until the insert tool is released. Drilling may cause splintering of the material. Wear eye protection, protective gloves and breathing protection if no dust removal system is used. 6 Closing the quick-release chuck -NOTEIt may be necessary to rotate the chuck and spindle half a turn until the automatic spindle lock engages. Tighten the chuck by turning the chuck sleeve firmly toward "CLOSE". After the jaws of the chuck make contact with the insert tool, continue to turn the chuck sleeve firmly toward "CLOSE" until the chuck locking mechanism engages automatically (indicated by a clearly audible "click, click"). 7. 2. 2 Key-type chuck -NOTEUse the chuck key supplied for opening and closing the chuck. Open the chuck sufficiently to allow the shaft of the insert tool to be inserted. [. . . ] inadequate cross section Control switch not fully pressed The drill bit makes no progress. Have the cord checked and, if necessary, replaced by an electrical specialist. Have it checked and, if necessary, replaced by an electrical specialist. Disposal Most of the materials from which Hilti electric tools are manufactured can be recycled. [. . . ]