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Pool pump project

Hi Ahmed,

You did some work with me about a year ago. I have a small swimming pool electrical project for you if you are interested.

I need to find a way to turn off my 2 pool chemical injectors if the pool pump shuts off. Pool pump could shut off if there is a blockage, someone manually switches it off or power outage.

I pulled the pool pump apart and identified the 3 wires that sends power to the pool pump motor. 2 are hot and 1 is ground. I put a multimeter on the wires and if the pool pump motor was running then 2 wires would read 50v. If the pool pump motor was not running then the 2 wires would be 0v.

Since the injectors used very little power, I tried to use the 2 wires to power both the pool pump motor and injector. Unfortunately there wasn't enough power to power both pool pump motor and injector. Only the injector switch on.

I was thinking, could you somehow use the 50v output as a signal to turn on/off an outlet. My injectors would then be plugged into that outlet.

The chemical injector I am using is the Stenner pump 85MHP17.

The pool pump is the Hayward SP3400VSPVR.

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page 14, figure 5.1.1 is the 3 wires I am talking about

In case you were wondering why I am doing this. One of the chemicals feeders is for Muriatic acid and the other is for Chlorine. The pool pump mixes water to those 2 chemicals and sends it to the pool. If the pump switches off then the 2 acids are mixed together without water and can cause a bad chemical reaction. That is why the city pool inspector is asking to automatically switch off the chemical feeders if the pool pump goes off for whatever reason.

Many thanks,


Compétences : AutoCAD, CAD/CAM, Génie Électrique, Mathématiques, Matlab and Mathematica

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Concernant l'employeur :
( 4 commentaires ) Wellington, United States

N° du projet : #8490539

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$5 USD / heure
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