Pump Speed Setting Question

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Billtkat

Well-known member
Apr 25, 2020
117
Oro Valley, AZ
I have a VS Pentair pump. When I had a suction vac I ran low speed for several hrs. then high speed to have the suction vac perform. I now have a robot vac and thinking I could run just a single lower speed for the amount of time needed. SO;
1. Is that a correct assumption to just run one lower speed & if so
2. what is the best way to determine that rpm setting ? ( currently @ 2200 RPM for a kidney shape pool with hot tub , around 10,500 gallons )
thanks
 
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I do not see a SWCG in your signature, so the base need to run the pump is to skim the surface. See what rpm is needed for that and use that rpm.
 
Bill,

I am confused as you say you have a 2-speed pump, but your signature says you have an IntelliFlo VS pump. :scratch:

I have an IntelliFlo that runs at 1200 RPM most of the time, but I do not have a heater. I assume you have a heater, since you have a spa, so you could probably run at 1500 to 1800 and still get your heater to run.

You should run the slowest speed you can and still get the job done.

The size of the pool does not really have much to do with your pump speed.

Thanks,

Jim R.
 
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Jimrahbe said:
Bill,

I am confused as you say you have a 2-speed pump, but your signature says you have an IntelliFlo VS pump. :scratch:

I have an IntelliFlo that runs at 1200 RPM most of the time, but I do not have a heater. I assume you have a heater, since you have a spa, so you could probably run at 1500 to 1800 and still get your heater to run.

You should run the slowest speed you can and still get the job done.

The size of the pool does not really have much to do with your pump speed.

Thanks,

Jim R.
Click to expand...
Your correct it is variable speed, my fault . I was just thinking about I was running it at a higher speed to used the suction vac , then a much lower speed otherwise. I do have a heater as well so when I run the Hot Tub & Heat it is set to 2850 RPM. Right now the pool & if I kick on the heater is at 2200 RPM.
Sorry for the confusion & need to clarify
 
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Billtkat said:
properly turn the water -
Click to expand...
That is a myth. You need to find the rpm needed to efficiently skim. Then run the pump long enough to satisfy the need to clean the water. That could be 2 hours, or 24 hours. Only you will know by experimenting.

I would start with a pump run time of 6 hours at minimum rpm to skim.

This all depends on how you chlorinate. I am assuming you are adding liquid chlorine on an as needed basis. Be sure the pump is running when you add your liquid chlorine.
 
Bill,

At TFP, we do not believe that old myth about having to "turnover" your pool water X times a day. It is just not true.

Chemicals keep your pool clear and algae free, not the number of times the water passes through the filter. The filter is there to capture the junk that falls into your pool, it is not there to capture algae. By the time your filter sees algae, you have already lost the war. :(

Thanks,

Jim R.
 
Billtkat said:
I have a VS Pentair pump. When I had a suction vac I ran low speed for several hrs. then high speed to have the suction vac perform. I now have a robot vac and thinking I could run just a single lower speed for the amount of time needed. SO;
1. Is that a correct assumption to just run one lower speed & if so
2. what is the best way to determine that rpm setting ? ( currently @ 2200 RPM for a kidney shape pool with hot tub , around 10,500 gallons )
thanks
Click to expand...

mknauss said:
That is a myth. You need to find the rpm needed to efficiently skim. Then run the pump long enough to satisfy the need to clean the water. That could be 2 hours, or 24 hours. Only you will know by experimenting.

I would start with a pump run time of 6 hours at minimum rpm to skim.

This all depends on how you chlorinate. I am assuming you are adding liquid chlorine on an as needed basis. Be sure the pump is running when you add your liquid chlorine.
Click to expand...
OK, so it is not the 1 hr. run time per 10 degrees in temp ? I do use liquid chlorine - I just thought you needed X flow to ensure like the heater is going to work properly if kicked on as example or X RPMs to ensure the side skimmer has the proper flow going in , etc.
 
Billtkat said:
OK, so it is not the 1 hr. run time per 10 degrees in temp ?
Click to expand...
No. That is a pool guy statement that has no science.

Billtkat said:
I just thought you needed X flow to ensure like the heater is going to work properly if kicked on as example
Click to expand...
You have an Easytouch I assume (you state Screenlogic), then you set a Pool Heat setting for RPM so when the Pool calls for heat, the RPM increases and the heater turns on. You need to find what RPM is needed for the heater to operate.

Billtkat said:
X RPMs to ensure the side skimmer has the proper flow going in
Click to expand...
That is your minimum RPM you use for Pool Mode. When a Feature calls for a higher rpm, the pump will ramp up.
 
Jimrahbe said:
Bill,

At TFP, we do not believe that old myth about having to "turnover" your pool water X times a day. It is just not true.

Chemicals keep your pool clear and algae free, not the number of times the water passes through the filter. The filter is there to capture the junk that falls into your pool, it is not there to capture algae. By the time your filter sees algae, you have already lost the war. :(

Thanks,

Jim R.
Click to expand...
Thanks. I think once again I was not clear - I should have been more focused in my question around flow rates to ensure the heater works properly when kicked on for the pool , or hot tub. Or flow rate to ensure the skimmer is drawing properly to clean properly
 
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mknauss said:
No. That is a pool guy statement that has no science.


You have an Easytouch I assume (you state Screenlogic), then you set a Pool Heat setting for RPM so when the Pool calls for heat, the RPM increases and the heater turns on. You need to find what RPM is needed for the heater to operate.


That is your minimum RPM you use for Pool Mode. When a Feature calls for a higher rpm, the pump will ramp up.
Click to expand...
thanks - learn something new -
 
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