Is this a general rule?

Philo

Well-known member
Oct 8, 2015
922
San Diego, Ca.
The water temp of the pool water at my neighbors and my house is 52 degrees.
I have a Pentair that will not generate but my neighbors Hayward is working.
Do most Hayward's work at lower temperatures compared to the Pentair brand?
 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
18,730
Bedford, TX
Phil,

The cold cut off temperature is not an exact number.. Pentair says that the cold cut off is 52 +/- 3 degrees...

I suspect that Hayward is very similar...

Thanks,

Jim R.
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
17,204
Tucson, AZ
From the AquaRite manual -

To find the optimum "Desired Output %" setting, start at approximately 50%. Test the chlorine level every few days and adjust the dial up or down accordingly. It usually takes 2-3 adjustments to find the ideal setting for your pool/spa and after that, it should only take minor, infrequent adjustments. Because the chlorine demand of the pool increases with temperature, most people find they have to adjust the dial up at the peak of the summer and down during the colder periods. The Aqua Rite automatically stops generating when the pool water temperatures drops below 50oF. This is usually not a problem because bacteria and algae stop growing at this temperature. You can override this low temperature cutoff by switching to SUPER CHLORINATE for a day.
 

ping

TFP Expert
LifeTime Supporter
Jun 24, 2011
3,130
Long Beach, CA
From the vault: Hayward SWG's will produce down to a salinity of 2,400 ppm and a temperature of 51° F. Output is scaled back to 20% of desired output setting at 60°F and output stops at 50°F.
 

planoattorney

Well-known member
Jun 12, 2017
53
Plano, Texas
I think in a round-about way, this answered my question but for my own education:

I am planning to install a SWG this year. I am in Plano (suburb of Dallas) and the pool water is up to 68 as of this morning. I am trying to decide if it is a good time of the year to install and if I put it in, will it start doing it's job now so I can actually see the benefit of my investment. Ergo my follow-up that fits in this tread - when the manufacturer publishes a cut off temp, is that the "water" temperature or the ambient temperature that is being referenced? I have never kept much attention on the water temp during the short winter season but I would be surprised if my pool gets below 50 degrees water temp more than 30 days in a year. Does that mean I would leave the SWG on year around?
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
17,204
Tucson, AZ
I leave my SWG attached year round. My cold water cutoff kicks in some time in Mid December and the water usually warms up enough in late Feb / early June. We do get overnight freezes but freeze-protect keeps the water moving.

SWGs cut off by measuring water temp, not air temp.
 

tmoss

Well-known member
Jul 17, 2007
58
North Texas
I live in Denton and have been using an ECG since June 2007. I pull it out early December due to the fact that the water is too cold for it to work. I install it typically the first 2 weeks in March because the water is warm enough (55+) to work reliably. My unit is a Pentair IC40. Works great. Last unit lasted 6 1/2 years. I acid wash 3 times/year and rarely have bubbles. Love it!
 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
18,730
Bedford, TX
I live in Denton and have been using an ECG since June 2007. I pull it out early December due to the fact that the water is too cold for it to work. I install it typically the first 2 weeks in March because the water is warm enough (55+) to work reliably. My unit is a Pentair IC40. Works great. Last unit lasted 6 1/2 years. I acid wash 3 times/year and rarely have bubbles. Love it!
T,

Well.... so much for the theory that acid washing a SWCG reduces its lifespan... :p

I only even look at mine once a year, as they never seem to have much, if any, scale...

Thanks,

Jim R.
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
17,204
Tucson, AZ
I would suggest you only acid wash it if you see visible scale. Concentrated mineral acids will damage the delicate transition metal coating on the plates.
 

tmoss

Well-known member
Jul 17, 2007
58
North Texas
My cell's salt measurement almost always reflects a more accurate number in relation to my drops test after I acid wash. Especially when water temp is around 76-78.