User manual KRESS SBLR 2475

[. . . ] When in middle position, the reversing switch prevents the accidental activation of the full wave electronic switch (1), for example when changing tools or assembling/disassembling the drill chuck. Percussion drilling device The machine has an integrated percussion mechanism and can be switched from normal drilling to percussion drilling. The sliding switch (4) allows switching from normal drilling to percussion drilling or vice-versa while the machine is in operation. [. . . ] Only this guarantees that the chuck is not unintentionally unwound from the drill spindle in anticlockwise mode. Should the chuck be undone from the drill spindle for the purpose of replacement, the new chuck must be tightened with a turning moment of at least 30 Nm before the machine is used again. The plane surfaces of the chuck and drill spindle must be cleaned before a new chuck is mounted. Before disassembling and reassembling the drill chuck, disconnect the machine from the power supply, or remove the mains cable module (6) from the grip using the locking device button (7). When turning anticlockwise, it is possible that the chuck loosens itself from the spindle. For this reason make sure that the chuck sits properly on the spindle. Always make sure that the chosen speed is correct for the purpose for which you are using the machine. High speed drilling in steel and stone will cause premature tool wear. Use tool steel twist drills for soft materials such as wood and plastics; carbide-tipped stone drills for stone and concrete; high speed twist drills for steel and iron. Also make sure that, using a gear-rim chuck, the drill chuck key is never fastened to the drill with chains, strings or by similar means. maintenance The machine's motor has life-time lubrication and requires no special maintenance. However, should you operate the machine on a continuous basis over long periods of time we recommend that you send us the machine for thorough cleaning and an inspection. This will spare you unnecessary repair expenses and increase the machine's service life. If you always clean the ventilator of dust after each operation, the motor will enjoy an ever longer service life. [. . . ] We are therefore able to guarantee free servicing of any production or material faults which arise in the 24 months after the date of sale to the purchaser. We reserve the right to repair defective parts or else replace them with new parts. The guarantee will be rendered void if the device is used improperly, mistreated or opened up by unauthorised repair personnel. [. . . ]