Pump control method and apparatus
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United States of America Patent
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Dec 30, 2003
Grant Date -
Aug 8, 2002
app pub date -
Dec 12, 2001
filing date -
Dec 12, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A method for controlling the operation of one or more electrically-operated pumps (11, 12) to pump a liquid from a well or sump (10) which, in use, receives a substantially continuous inflow of said liquid, characterized in that the method includes the step of starting or stopping each pump in relation to the approach of a change of tariff for the electricity supplied for the operation of each said pump (11, 12).
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