| 摘要 |
A management system for managing operation of an airlift pumping device which has a body having an internal chamber in fluid communication with water to be pumped and connected to a supply line for receiving compressed air, said system comprising: a detection device for detecting availability of compressed air for expelling water from the chamber and electronic control means configured to enable and disable air flow to and from the pump chamber; the control means comprising logic that has been programmed on startup to detect an input responsive to compressed air being present in the supply line, and in response to actuate automatically a purge function, thereby to reduce initial liquid load and subsequently to ignore further changes of state of said flow device until said circuit has been continuously open for a pre-set period of time. -1 3 Ac 3 (D (D -o cz 0- CD -CL -oD aQ' |
