Abstract: A method to operate a dishwasher, comprising: (1) adding detergent to a cleaning liquid which is circulated within the dishwasher; (2) measuring the conductivity of the cleaning liquid and determining the rate of change in conductivity caused by dissolution of the detergent in the cleaning liquid; (3) comparing the rate of change in conductivity with a predetermined threshold value so as to determine the dissolution rate of the detergent that has been added in step (A) to the cleaning liquid; and (4) adjusting operating parameters based on the determination of step (C).

Abstract: The invention relates to a method for adding a multi-component solid detergent additive during a program sequence of a water leading household appliance, in particular a dishwasher, wherein the household appliance comprises a compartment for storing the detergent additive. According to the invention, the liquid supply to the detergent additive stored in the compartment is effected in dependency of the program sequence, wherein in particular the liquid supply to the compartment is repeated at different times. Similarly a household appliance is provided with a device for adding a multi-component detergent additive.

Abstract: The invention relates to a dishwasher comprising a washing chamber, a water collection sump, a circulation pump, a circulation filter system with a flat filter arranged between the washing chamber and the water collection sump and a discharge section arranged between a discharge pump and the washing chamber. In accordance with the present invention, the dishwasher is provided with a filter cleaning mode and the filter cleaning mode comprises the steps of: decreasing the power of the circulation pump (4) in such a way that the water level in the water collection sump (2) increases and at least some of the deposits of the flat filter (7) are floated increasing the power of the circulation pump (4) in order to draw the floating deposits into the discharge section (10).

Abstract: A method to operate a dishwasher, comprising: (1) adding detergent to a cleaning liquid which is circulated within the dishwasher; (2) measuring the conductivity of the cleaning liquid and determining the rate of change in conductivity caused by dissolution of the detergent in the cleaning liquid; (3) comparing the rate of change in conductivity with a predetermined threshold value so as to determine the dissolution rate of the detergent that has been added in step (A) to the cleaning liquid; and (4) adjusting operating parameters based on the determination of step (C).

Abstract: The invention relates to a dishwasher comprising a washing chamber, a water collection sump, a circulation pump, a circulation filter system with a flat filter arranged between the washing chamber and the water collection sump and a discharge section arranged between a discharge pump and the washing chamber.

Abstract: The invention relates to a method for adding a multi-component solid detergent additive during a program sequence of a water leading household appliance, in particular a dishwasher, wherein the household appliance comprises a compartment for storing the detergent additive. According to the invention, the liquid supply to the detergent additive stored in the compartment is effected in dependency of the program sequence, wherein in particular the liquid supply to the compartment is repeated at different times. Similarly a household appliance is provided with a device for adding a multi-component detergent additive.

Abstract: The invention concerns a sieve device for a dishwasher with a sieve surface (2) and a plurality of holes made in the sieve surface. According to the invention, the holes in the sieve surface are designed to be different sizes.