Inteliflow "VF" seeking speeds every hour

sparkplug

New member
Sep 22, 2019
2
Santa Clarita, CA
Hi, thank you ALL for your help and support . Having an issue with an old "VF" #350082 . it started a few months back when i came home and found the pump running on manual mode ( super high speed) after pool guy had stopped by. I touched the filter button and the unit went full stop and at the back of the motor closest to the fan the seem squirted a bit of water to the ground . In my experience with this great motor if you hit a button and the unit stops completely its from the unit being stopped and started in its own mode. If manual mode was selected while motor being in filter mode , the motor would change speeds gradually.
Today the unit about every hour will speed up maybe 3-4 speed changes and go back down to normal programed speed. this 10-12 year old pump has been the greatest pump I have ever had ! I also noticed i could not change the filter speed (20gpm) like i can change the vacuum speed thru the top control panel . At the last (DE) filter cleaning I looked for leaks replaced basket o-ring and clamp and even cleaned and lubed the orings to the filter pressure guage assembly and main filter seal and checked all connections with a strap wrench and I dont see accumulating air in the basket lid . Any thoughts ?
thanks again sparkplug !
 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
15,028
Bedford, TX
SP,

Tell us if this pump is normally controlled by an automation system such as an EasyTouch or is always run manually. :scratch:

I would check to see what programs are loaded into the pump's controller...

While the pump's control panel can go bad, most times, something in the controller is telling the pump what to do.

Tell us more...

Thanks,

Jim R.
 

sparkplug

New member
Sep 22, 2019
2
Santa Clarita, CA
SP,

Tell us if this pump is normally controlled by an automation system such as an EasyTouch or is always run manually. :scratch:

I would check to see what programs are loaded into the pump's controller...

While the pump's control panel can go bad, most times, something in the controller is telling the pump what to do.

Tell us more...

Thanks,

Jim R.
Hi Jim, no other controllers straight pump , I put in my self , unit is about 10-12 years old . I run the pump a 20Gpm for a 1 cycle period which last about 20 Hrs. at a 165 watt. once the watts gets to 300 watts , I clean the filter , yes i pull it out and vacuum the filter housing out and hose of the grids and back together and start the 150-160watt cycle again. Because its doing this cycle every hour and you can set your watch to it and i mean every hour on the minute . I'm relatively sure its an electronic degrading state . I tried to go into and adjust the pump (filter) speed and couldn't seem or figure out how to do it . The vacuum mode i was able to go into and adjust . So i could be see two issued . but its been such a good pump and paid for it's self many times over . A new controller is within a few hundred dollars of a new pump. this pump has only had the basket and lid replaced , never opened or diffuse replaced or split open . If i can change the pump speed and it still cycles every hour , I think its not a pluming leak or pump cavitation issue . At 37 years old system i just need to figure out pump or plumbing issue . thanks
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,840
Pleasanton, CA
I run the pump a 20Gpm for a 1 cycle period which last about 20 Hrs. at a 165 watt. once the watts gets to 300 watts , I clean the filter
This may have nothing to do with your issue but I think you are waiting far too long before cleaning your filter. That is probably more than a 2x increase in head loss. What is the RPM change when you go from 165 watts to 300 watts? Does the RPM cycling issue go away after a filter clean?

As for the RPM cycling, can you set the pump to run in RPM mode instead of GPM mode?

GPM mode has many issues and the drive may be hunting because it thinks that the pump has lost prime.

[EDIT] Also, the head loss associated with those power levels at that flow rate are extremely high. Typically, a pool with 2" plumbing would require only about 60 watts of energy for 20 GPM. Can you describe the plumbing setup in more detail? A picture of the pad plumbing may help too.
 
Last edited:

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
15,028
Bedford, TX
SP,

Just in case you no longer have the manual... https://www.thepoolfactory.com/media/wysiwyg/pdfs/pentair-intelliflo-vf-manual.pdf

Since the problem occurred right after a pool guy did some service, I would assume he got in there and messed up some setting.

If this were my pump I would reset it and reprogram the whole thing.

That said, I really don't understand the actual problem you are having..

You say the pump used to run one cycle of 20 GPM and that took 20 hours. I assume the pump shut off and came back on 4 hours later and did it again? Is that correct?

When it did this it was in the Filter mode. You say you can't figure out how to program the filter mode?? What happens that keeps you from setting up the filter mode?

Thanks,

Jim R.