Patent ID: 7938913

Claim:
A conveyor dishwasher for cleaning wares, comprising: a conveyor device for conveying wares in a direction of conveyance through at least two zones of the conveyor dishwasher, including at least one wash zone and at least one final rinse zone, the wash zone having spray nozzles, a tank and a pumping device for recirculating wash liquid from the tank to the spray nozzles and spraying wash liquid through the spray nozzles onto wares, the final rinse zone including spray nozzles for spraying final rinse liquid onto wares; a storage tank for gathering sprayed final rinse liquid; a liquid transfer device connected for controlling whether liquid is transferred from the storage tank to the wash zone; at least one sensor device for determining liquid demand in the wash zone; and a control unit configured for automatic operation of the liquid transfer device depending on liquid demand in the wash zone as indicated by the sensor device; wherein the storage tank has an overflow over which liquid flows from the storage tank when liquid level in the storage tank exceeds a certain outflow level and the overflow is a path separate from a path defined by the liquid transfer device.