Pentair IC60 SWCG and Taylor Drop Test 1,000+ ppm Apart

KevMo

Gold Supporter
Jul 26, 2022
186
Montgomery, TX
Pool Size
27500
Surface
Plaster
Chlorine
Liquid Chlorine
I converted from LC to SWGC a couple of weeks ago by installing a Pentair IC60. It's working well enough that 24 hours at 15% is keeping up with demand in my 27,500 galon pool in the Houston area.

The question I have is that the salt reading from my IC60 is consistrntly 900-1,000 ppm higher than I get using the Taylor drop test. For example, the Taylor drop test consistently shows 3,200, while the IC60 has reported 4,100 for days. I understand the IC60 calculates the salt level based on conductivity, but I didn't expect them to be so far apart. As far as i know there are not any appreciable metals in the pool water - at least thst is what some test strips I have show. There are not visible signs of metals, staining, etc.

It's not a big issue right now because it is working. However, my salt level was at 3,500 early on and the IC60 was reporting too high a salt level. I exchanged about 1,800 gallons to get the levels I have now.
 
That's unusual. Most of the time the IntelliChlor reports a salinity slightly less than actual (K-1766) salt level, especially with cold water.
 
Adjust the salinity in your water to keep the SWG happy. It's may be off from reality but as long as it's happy and producing chlorine for you that's the important thing. If continued errors persist then replacing the flow switch assembly would be in order.
 
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@KevMo

How are you testing the salt level???

Are you using a speed stir?

Are you stopping at the moment the color turns to salmon, or are you continuing until the color no longer changes??? Unlike all the other tests, you do not keeping adding drops if the color keeps changing.

Basically, when using the speed-stir, as you add drops, the salmon color will 'flash' on and then quickly go back to cloudy... The very first time it stays salmon, and does no go back to being cloudy, is when you stop.. You do not try to match a particular color..

As a side note, a bad thermistor in the flow switch can make the 'Reported' salt level be high or low.. So, replacing the flow switch should fix the problem.. If under warranty, Pentair should fix it for you.

Thanks,

Jim R.
 
Last edited:
@KevMo

How are you testing the salt level???

Are you using a speed stir?

Are you stopping at the moment the color turns to salmon, or are you continuing until the color no longer changes??? Unlike all the other tests, you do not keeping adding drops if the color keeps changing.

Basically, when using the speed-stir, as you add drops, the salmon color will 'flash' on and then quickly go back to cloudy... The very first time it stays salmon, and does no go back to being cloudy, is when you stop.. You do not try to match a particular color..

As a side note, a bad thermistor in the flow switch can make the 'Reported' salt level be high or low.. So, replacing the flow switch should fix the problem.. If under warranty, Pentair should fix it for you.

Thanks,

Jim R.
I have a speed stir and that is exactly how I am testing.

It's still under warranty. I will contact Pentair about the flow switch.