Hayward T15 issues

[jgarden]

Instant salt reading 800
Average 800
Voltage 29.24V
Current 2.37A

I believe the voltage and current are not where they should be. And it is not generating chlorine. What usually causes that?

T15 is 2 yrs old. Was last cleaned in April.

I manually checked salt about a month ago and it was 3100. I ran out of the testing solution, so haven't checked since then. Hopefully get some more solution today. I see some algae developing. So I am going to use liquid chlorine, until I figure this out.



TIA

 

[Philo]

That's how they act when they are dirty or dead. 2 years isn't very long for a SWG. I'd acid clean it again before replacing it.

 

[jgarden]

Philo, I took your advice and cleaned it. There was scale inside of it. I must have something "not right" that I am developing scale. I reset the controller (omnilogic). Readings are now:


Instant salt reading 3383
Average 3432
Voltage 26.37V
Current 8.14A


I believe the voltage and current are still a little out of whack. I replenished my reagents, and manually checked salt, it was 3400.

 

[JamesW]

What's the water temperature?

What are all of your chemistry numbers?

Voltage is good. Amps are too high. Probably due to high water temperature.

 

[jgarden]

I didn't check all my chem today.

Water temp is 85.7 per the omnilogic/T-cell

 

[JamesW]

Some cut out at 8 amps. Yours might be 8 or higher. As long as it's not giving a high salt warning, you're good.

What are your most recent chemistry numbers?

 

[jgarden]

FC 6
PH 7.8
TA 110
CH 300
CYA 45
Salt 3400


I feel like I have added enough CYA to get it up higher than 45. I believe it should be up around 70 for a salt water outdoor pool. It seems to go up very slowly. Everything I read indicates the CYA only goes away through water replenishment. I am not sure how much water evaporates from my pool, I am sure a considerable amount with the high temps in my area, but I seem to always be low on CYA. I feel I am doing the test correctly. I purchased the R7065 (50ppm) standard to confirm I am looking at the black circle correctly.


What causes the excessive scale on the SWG? I read that if all is working correctly (perfect chemistry), the SWG reversing polarity back and forth is suppose to eliminate all scale. I have had scale buildup a few times on my salt cell. What chemistry is the biggest factor?

Thank you

 

[JamesW]

I think that your pH has probably been high on multiple occasions due to the TA at 110.

I think that if you get the TA to about 60, you would have a more stable pH and much less scale.