WAREWASH MACHINE WITH CONTROLLED RETENTION OF LIQUID IN SUSPENSION

摘要

A warewash machine includes at least one collection tank for collecting wash liquid that is recirculated by a pump and sprayed for cleaning wares within a spray zone of the machine. An overflow path leads from the collection tank, and an automated valve controls flow along the overflow path. A controller is configured to control an open/closed state of the automated valve based at least in part upon status of pump operation

主权项

1. A method of operating a warewash machine that includes at least one collection tank for collecting wash liquid that is recirculated by a pump and sprayed for cleaning wares within a spray zone of the machine, the method comprising:
utilizing an automated valve to control overflow draining from the collection tank; while the pump is operating to recirculate wash liquid, maintaining the automated valve in an open condition at least when fresh liquid is also being added to the machine to allow liquid to overflow from the tank as the water level in the tank rises due to addition of water by dilution or capture of final rinse liquid; automatically closing the automated valve in conjunction with stopping operation of the pump so that at least some liquid in suspension falls into the collection tank and liquid level in the collection tank rises above a normal overflow level of the collection tank.