Filling system for dishwashers with accurate water level - has two phase program with circulating pump switched off in second phase

摘要

The wash container of the dishwasher is filled with the wash liquid in two different phases. In the first phase the circulating pump is in motion and in the second phase the pump is stationary so that an accurate water level is always achieved. this accurate level is not affected by the impurities present in the fluid nor by the water flow pressure. The water supply pipe can be fitted with a magnet valve which hsa a throughput of 5 litres per min. so that during the first phase lasting a minute 5 litres water can be sprayed into the wash container by the circulating pump and spray unit, following which the drive motor is switched off and a further 5 litres of water are added until the substantially immobile water level in the wash container reaches a level where the pressure switch closes the magnet valve in the water supply pipes.