Metabo MAG 50 Operating Instructions 2 - Page 11

ENGLISH ENG The extension cable must be suitable for the drill and magnetic drill stand power ratings (see Technical Specifications). If using a roll of cable, always roll up the cable completely. 7 Use 7.1 Installing safety chain When working on angled and vertical surfaces and overhead, the magnetic drill stand must be secured with the supplied safety chain (2) so that is cannot fall down if the power supply is interrupted. Fit the safety chain (2) so that if the mains voltage fails the magnetic drill stand is moved away from the operator. Caution! Check the safety chain (2) for damage. Before using the safety chain (2), always check it carefully to ensure it is operating faultlessly and as specified. If the safety chain (2) is damaged or the snap hook (1) is no longer in perfect working order, replace the safety chain immediately. - Fit the safety chain (2) on one of the two holding points (3) of the magnetic drill stand. - Then secure the safety chain to another suitable fastening point or to the material being processed. Hook the snap hook (1) of the safety chain into one of the chain links so that the chain is as taut as possible. - Check that the snap hook (1) is completely closed. The safety chain does not substitute the magnetic force of the magnetic drill stand, but is simply used to secure against falling in the event of a voltage failure. 7.2 Switching on / switch-on sequence For safety reasons, the drill can only be switched on after the magnet has been switched on. Please observe the switch-on sequence. 1. First switch on the magnet: set switch (11) to "1". When the magnet is switched on, the indicator lamp built into the switch (11) lights up. 2. Wait until this occurs before turning on the drill at the switch (9). See also chapter 9. Note: The full holding power of the magnet is available when the drill is switched on. 7.3 Switching off drill Press switch (10). Wait until the drill has come to a complete standstill. 7.4 Switching off magnet When the magnet is switched off, the magnet loses its holding power. Set switch (11) to "0". 7.5 Mounting on the workpiece To permit the magnetic drill stand to adhere properly to material that is to be drilled, the surface must be clean and smooth. Loose rust, dirt or grease must be removed before mounting the magnetic drill stand; any welding beads or surface irregularities must be smoothened. Thin coats of paint will not impair adhesion. Clean the magnet block as well (12) if necessary. After switching the magnet on, hold the handle of the magnetic drill stand and shake it firmly to ensure that the unit is adhering properly. If it is not, then check the condition of the surface of the material and that of the bottom of the magnet block. Clean as necessary and try again. Use on thin steel The unit adheres best to low-carbon steel that is at least 12 mm thick. For drilling a hole into thin steel, a steel plate measuring at least 100 x 200 x 12 mm can be secured under the material at the place where the magnetic stand is to be positioned. Non-ferrous metals To drill a hole in non-ferrous metal, the steel plate should be secured on the surface of the material and the magnetic drill stand then placed on the steel plate. Round or cambered surfaces If you need to drill into a round or cambered surface, then the magnet block (12) should be positioned with its longitudinal axis parallel to the axis of the camber. The open space between the magnet block and the camber should be packed with steel wedges or rods on both sides along the entire length of the magnet block so that after switching on the magnet as many as possible magnetic lines of force are conducted from the magnet pole through the wedges (or rods) and the material to the magnet block housing. Ensure that the steel wedges (rods) on both sides of the magnet block are distributed such that the axis of the drill bit is aligned directly to the centre of curvature; otherwise it could be diverted to one side. By shaking the handle of the magnetic drill stand, make sure that the stand adheres properly to the material. 7.6 Drilling - Observe the Operating Instructions of the drill. 11