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Discuss Shower waste pump overruns/stays on in the Bathrooms, Showers and Wetrooms area at

  1. sammathias

    sammathias Plumber GSR

    haha sorry just cant really see how that worked.
  2. rpm

    rpm Trusted Plumber Top Contributor!!

    You`re not the only one, more going on than meets the eye I reckon ;)
  3. inashed

    inashed New Member

    The flow switch that was fitted as a replacement was a Gentech FS-10. This requires a vertical installation. Inside the copper tube is a ball float and a plastic retainer. When the water flows the ball rises to the retainer and closes the circuit. When the water is off the ball drops and opens the circuit.

    With the flow switch fitted the wrong way around the ball drops against the retainer, closing the circuit and turning on the waste pump. Turn on the water the ball rises and opens the circuit, turning off the pump.
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