Method for operating a pump in a washing machine, mechatronic system and washing machine

摘要

The method involves providing washing fluid (19) to a washing container (2) in a washing phase for treating washing goods (8). The fluid is discharged from the container via a discharging device (12) of a water guiding device (1) at an end of the washing phase. An upper level (Krit) and a lower level (Min) of the fluid in the container are detected by a sensor (20), and conveying capacity of a pump i.e. discharging pump (12a) and flow pump (17a), is varied depending on the detected levels of the fluid in a continuous or discontinuous manner. Independent claims are also included for the following: (1) a method for operating a washing machine (2) a frequency converter for supplying current to an electronically commutated motor (3) a mechantronic system comprising a frequency converter (4) a washing machine comprising a mechantronic system.