My free chlorine is waaay too low.

[pcmacd]

Hayward Pro Logic.

My salt is around 3800 PPM.

I've a rebuilt SWG that was working great until the board failed....

I repaired that failed solder joint so common with Hayward Pro Logic boards.

I am running my SWG at around 70% on a ten or so hour cycle.

And I am getting 1.5 ppm chlorine. Yes, my CYA is fine, around 65 ppm.

Computer says about the SWG ~25 volts and eight amps. That's about 200 watts.

What could be wrong? Why no more chlorine than that?

 

[reggiehammond]

Two options most likely.
1) You’ve got organics eating more FC than your SWCG can make
2) Your SWCG isn’t producing what it should be.

Easiest way to check is OCLT. Manually dose to 10ppm after sunset, test to confirm. Then test in the morning before the sun hits the water. If lost more than 0.5-1.0, you need to SLAM.

If you don’t lose FC overnight; then do the same thing the next night; raise FC to 5, run pump and SWCG overnight and check FC in the morning. Should be more than 5.

 

[pcmacd]

Two options most likely.
1) You’ve got organics eating more FC than your SWCG can make
2) Your SWCG isn’t producing what it should be.

Easiest way to check is OCLT. Manually dose to 10ppm after sunset, test to confirm. Then test in the morning before the sun hits the water. If lost more than 0.5-1.0, you need to SLAM.

If you don’t lose FC overnight; then do the same thing the next night; raise FC to 5, run pump and SWCG overnight and check FC in the morning. Should be more than 5.

Thanks for your input. Those are obvious things that I should have considered on my own. Duh?

mac

 

[Newdude]

Those are obvious things that I should have considered on my own. Duh?

Don't beat yourself up too bad Mac. The older I get the less I can multitask with precision. Plus, rebuilding the control board would have taken my thought process away from the basics wanting to blame that instead. Lol