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Method to control out pumping from a sewage pump station

  • US 6,203,282 B1
  • Filed: 10/10/1996
  • Issued: 03/20/2001
  • Est. Priority Date: 11/24/1995
  • Status: Expired due to Term
First Claim
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1. A method to control stops of an intermittently operating electric motor that drives a submersible pump arranged in a pump station, the pump being operative for pumping sewage water, starts and stops of the motor being dependent on the sewage water level in the pump station, the method comprising the steps of:

  • stopping said electric motor at a first level when the sewage water level in the pump station has gone down to an upper part of said pump; and

    at preselected intervals, pumping below said first level and stopping said electric motor when the sewage water level in the pump station reaches a water inlet of said pump.

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