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Anti-entrapment and anti-deadhead function

  • US 10,480,516 B2
  • Filed: 12/21/2016
  • Issued: 11/19/2019
  • Est. Priority Date: 08/26/2004
  • Status: Active Grant
First Claim
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1. A method of controlling a pumping system for at least one aquatic application having a pump driven by a motor coupled to the pump, the method comprising:

  • determining, via a controller in communication with the motor, whether a blockage condition exists based on a power consumption value of the motor,wherein the blockage condition is at least one of an entrapment condition and a deadhead condition, andwherein, if a blockage condition is detected,restarting the pump after detection of the blockage condition,undertaking a detection method in response to the entrapment condition, wherein the controller is alerted upon a first occurrence of a blockage event, orundertaking another detection method in response to the deadhead condition, wherein the controller is alerted upon a plurality of blockage events.

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