Aquarite and the Flow switch

[mrmrk49]

The Pure N CLear was designed to operate when the pump was on utilizing a noise sensor. This sensor was mounted on the pipe by the equipment. This was prone to false signals, such as lawnmowers.
This system did not really require the flow for it to operate.
The stuff that you may see coming back to the pool and looks like white flakes, which I can see may look like the inside of pipe deteriorating. It is calcium scale coming off the cell.

Noise sensor ? I think this one is magnetic:. sensor is glued on to the pump itself, seems to work very good: a few mVAC with pump off, 100m VAC @60Hz with pump on. Doesn't have any voltage applied to it, 1 side capacitively coupled to comparator circuit, other tied to local ground.

I did notice that the unit operates whether the pump is on or not, and was trying to troubleshoot that problem. I don't have the schematics, but I've traced out the relevent portion of the circuitry. Looks like a bad IC6 (LM2903), but even if I replace that, I don't see how the circuit will work - it looks like a basic desing error - needs a diode in signal path.

re pipes: yeah, that makes sense

MikeK

[bethsg]

In follow up to my flow switch problem... the new one came in the mail this week... quick removal of old and installation of new.. and its works perfectly... I think the problem was with the cord which runs from the flow switch to the electronic unit... we were stupid and left it out over winter and it got wet froze, etc... even the directions say to remove both the cell and the flow switch during winterization... we only removed the cell. Aquarite was wonderful on the phone.. it was actually still under warranty, so we paid a pro rata amount for new flow switch. Interestly enough.. the new flow switch has a different type of wire now, than the flat phone type wire on the previous flow switch.