Abstract: A method for rinsing crockery in a dishwashing machine is disclosed. The dishwashing machine includes a circulation pump, a water heater, an upper spray arm and a lower spray arm both alternatively fed by the circulation pump. The method includes the step of heating of the rinsing circulated water up to a maximum predetermined value. The method further includes the step of interrupting the feeding of the lower spray arm when a threshold water temperature is reached so that only the upper spray arm is fed by the circulated water.

Abstract: An automatic dishwasher having a rotationally coupled spray arm and filter, with a motor for effecting the relative rotation of the spray arm and filter, wherein one of the rotor and stator is formed by a portion of one of the spray arm assembly and the filter.

Abstract: A method for rinsing crockery in a dishwashing machine is disclosed. The dishwashing machine includes a circulation pump, a water heater, an upper spray arm and a lower spray arm both alternatively fed by the circulation pump. The method includes the step of heating of the rinsing circulated water up to a maximum predetermined value. The method further includes the step of interrupting the feeding of the lower spray arm when a threshold water temperature is reached so that only the upper spray arm is fed by the circulated water.

Abstract: A dishwasher comprises a circulating pump, a washing tank provided with a substantially horizontal fine-mesh filter disposed in the path of the flow of water drawn in by the circulating pump, and spray means capable of directing downwardly at least one rotating water jet for filter cleaning purposes. Such fine-mesh filter presents an area below a circular pattern of the downwardly directed jet having a percentage of open area lower than the other portions of the filter.

Abstract: A dishwasher comprises a circulating pump, a washing tank provided with a substantially horizontal fine-mesh filter disposed in the path of the flow of water drawn in by the circulating pump, and spray means capable of directing downwardly at least one rotating water jet for filter cleaning purposes. Such fine-mesh filter presents an area below a circular pattern of the downwardly directed jet having a percentage of open area lower than the other portions of the filter.

Abstract: A ventilation device has a housing which can be connected with a fluid system to be ventilated. A float is movable in the housing, and controls a valve through an operating device for a ventilation process. The valve opens and closes a ventilation passage. The operating device has an operating magnet with exciter coil, which can be controlled electrically through a switch operable by the float. The operating magnet, with its switching part, operates to open the valve. The ventilating device can function without disturbance in operation, can be manufactured at low cost, can be used even with very high pressures, and, if necessary, can be monitored from a remote point.