Abstract: A method is proposed for operating a cleaning appliance which comprises a control device as well as at least one cleaning element for cleaning a surface which has a memory element. The control device comprises a control memory member and the control device is connected to a reader for reading the memory element. In order to reduce the risk of the user unintentionally using an unsuitable cleaning element, it is suggested that characterizing data distinguishing the type of cleaning element be stored in the memory element, these data being read and evaluated in the period of time from the starting up of the cleaning appliance up to the beginning of the cleaning action of the cleaning element. In addition, a cleaning appliance for implementing the method is suggested.

Abstract: A method is proposed for operating a cleaning appliance which comprises a control device as well as at least one cleaning element for cleaning a surface which has a memory element. The control device comprises a control memory member and the control device is connected to a reader for reading the memory element. In order to reduce the risk of the user unintentionally using an unsuitable cleaning element, it is suggested that characterizing data distinguishing the type of cleaning element be stored in the memory element, these data being read and evaluated in the period of time from the starting up of the cleaning appliance up to the beginning of the cleaning action of the cleaning element. In addition, a cleaning appliance for implementing the method is suggested.

Abstract: A process for leak testing in fuel injection pumps that have a pump housing that can be plugged into a motor housing, in which an outlet of the fuel injection pump, which feeds into an annular chamber that is divided by sealing rings and is normally discharged by way of a line, is closed with a material in order to carry out a leak test. The material is plastically deformable and dissolves with the heating of the fuel, and due to its plasticity, produces a sealed closure of the annular chamber in relation to the interior of the fuel injection pump so that the annular chamber can be loaded with a testing pressure via the line.