Metabo DSD 250 Operating Instructions - Page 14
Maintenance, cleaning - test
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ENG ENGLISH If the grinding wheel is so badly worn that the maximum distance of 2 mm can no longer be maintained, the grinding wheel must be replaced. 13 8.3 Switching On and Off Press the switch (11) (see illustrations D, page 3). I = Switch on 0 = Switch off DS 125, DS 150: Avoid inadvertent starts: always switch the grinder off when the plug is removed from the mains socket or if there has been a power cut. Restart protection (not in DS 125, DS 150): When power is restored after a power failure, the machine - which is still switched on - will not start automatically for safety reasons. Switch machine on and off again. 8.4 Dry grinding, belt sanding - Stand in front of the grinder. - Holding the workpiece with both hands, place the workpiece on the workpiece supports (8) and gently press it against the dry grinding wheel/ sanding belt. For optimum grinding/sanding results, move the workpiece gently to and fro. This also helps to distribute wear evenly on the grinding material. 8.5 Wet grinding (TNS 175 only) Only use the wet grinding wheel for grinding when there is water in the water container. (18). Roughly 1/3 of the wet grinding wheel should be immersed in water. grinding results may impaired if the water level is either too low or too high. - Stand to the left of the grinder, in front of the wet grinding wheel. - Holding the workpiece with both hands, lower it onto the wet grinding wheel. You can also support the workpiece on the levels on the water container (18) and then lower the workpiece onto the wet grinding wheel. 8.6 Adjusting the belt run (BS 175 only) Unplug. Rotate the sanding belt manually. Use the rotary knob (14) to adjust the sanding belt so that it runs centrally on the sanding belt roller. 9 Maintenance, cleaning Clean, check and perform maintenance work on the machine and guard devices regularly. Regularly clean the inside of the grinding wheels and belt grinder housing. The grinding wheels and sanding belt must be able to rotate freely within the housing. Disconnect the mains plug before starting any setting, cleaning, maintenance or repair work. 9.1 Grinding wheel change Use only original Metabo grinding wheels. The permissible rotational speed specified on the grinding wheel must be equal to or greater than the maximum idling speed specified on the identification plate of the machine. Grinding wheel check: suspend the grinding wheel on a thread. Knock lightly with a piece of hard wood. You will hear a clear tone if the grinding wheel is in perfect condition. If you hear a clattering, dull or hollow sound, the grinding wheel is damaged. Do not use damaged grinding wheels. Test run A test run of approx. 5 min without load must be carried out after the grinding wheel has been changed. All persons must stay clear of the danger zone when this is performed. Dry grinding wheel: - Release the screws on the safety guard cover (1), twist and remove the cover (1) (bayonet catch). - Hold the grinding wheel (4) firmly in position as shown. Caution! Risk of injury! Wear protective gloves! 14