Domestic appliance with an electronic safety system and a mechanical locking system and method for operating a domestic appliance

The present invention relates to a domestic appliance (2) with a power source (42) being electrically connectable to an electrical motor (44) for driving a processing tool (46), the domestic appliance (2) comprising a first mechanical switch (62) being manually switchable from a first position into a second position, a second mechanical switch (68) being manually switchable from a first position into a second position, an electronic safety system with first means (78) for detecting the position of the first mechanical switch (62) and second means (80) for detecting the position of the second mechanical switch (68), the electronic safety system being constructed such that the motor (44) is only connected to one or both poles (54, 56) of the power source (42) if both mechanical switches (62, 68) are switched into their second position and if the first mechanical switch (62) is switched into its second position before the second mechanical switch (68) is switched into its second position. According to the invention, there is additionally provided a mechanical locking system (76) between the first and second mechanical switch (62, 68), such that the mechanical locking system (76) locks the second mechanical switch (68) in its first position as long as the first mechanical switch (62) is not switched into its second position. The present invention further relates to a method for operating a domestic appliance (2).