[. . . ] Permitted {isc types: Use only grinding discs which are approved for a speed of at least. [. . . ] Keep the cooling slots in the motor housing clean and free of obstructions. Should the machine develop a fault despite having been subjected to careful m. Lf the motor is overloaded while working, the machine will stop, and will only The permitted overload is not a certain specified value, but depends on motor temoerature. Restart interlock This protection device prevents uncontrolled restading of the machine after interruption of the power supply, e. Even after the supply cord has been reconnected to the mains supply, the machine can only be restarted by operating the on/off switch intentionally. Seruice indicator The service indicator LED 16 lights up or begins to flicker approximately 8 hours before the automatic cut-out carbon brushes finally switch off the machine. [. . . ] Alwayvdlsconnect the mains plug from the mains supply before working on the The spindle lockbutton 7 should only be pressed once spindle rotation has stopped. [. . . ]