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Thread: Autopilot water flow sensitivity

  1. Back To Top    #1

    Join Date
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    Autopilot water flow sensitivity

    My Autopilot seems to continually complain about the flow level being too low. Is there an optimum flow. I have a pentair variable flow pump and have begin to raise the flow to 50 GPM to get the autopilot to work.
    Sean

    15 x 30 gunite pool with Riverflow Professional 12miles per hour flow (10HP silent ABB pump) to make the entire pool flow - Pentair Intellitouch i10 - Heat pump AquaComfort 110 - Raypak 399k Digital Gas Heater - Pool Pilot Digital SC-48 - Pentair FNS Plus 60 - Polaris 3900 Sport Cleaner on booster pump
    2 x Pentair Intelliflo pumps - one for filter (VF) and second for Venturi Pool Jets (VS) and Jandy 6 set deckjets - Pentair PG2000 Fiberoptic lighting - Automatic PoolCover (Brown) by Pool Cover Specialists

    Winter Pool Bubble by Ameri-Dome

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    JasonLion's Avatar
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    Re: Autopilot water flow sensitivity

    The AutoPilot needs between 15 and 20 GPM to keep the flow sensor happy.

    It is possible that the strainer in the manifold has gotten dirty and is diverting too much water through the bypass. If the strainer is already clean, you might have a problem with the flow sensor.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

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    Re: Autopilot water flow sensitivity

    I do clean the strainer every week (if you mean the one where the water diverts from the main flow to enter the autopilot)

    Any other way to do some testing? or check the sensor?
    Sean

    15 x 30 gunite pool with Riverflow Professional 12miles per hour flow (10HP silent ABB pump) to make the entire pool flow - Pentair Intellitouch i10 - Heat pump AquaComfort 110 - Raypak 399k Digital Gas Heater - Pool Pilot Digital SC-48 - Pentair FNS Plus 60 - Polaris 3900 Sport Cleaner on booster pump
    2 x Pentair Intelliflo pumps - one for filter (VF) and second for Venturi Pool Jets (VS) and Jandy 6 set deckjets - Pentair PG2000 Fiberoptic lighting - Automatic PoolCover (Brown) by Pool Cover Specialists

    Winter Pool Bubble by Ameri-Dome

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    JasonLion's Avatar
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    Re: Autopilot water flow sensitivity

    Another thing to check is to be sure the check valve in the Autopilot manifold remains fully closed at low flow rates. It should not open at all at flow rates around 15 gpm.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  5. Back To Top    #5

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    Re: Autopilot water flow sensitivity

    Jason

    Thanks and that seems to be a good idea - I am trying to look at the manual to see how to test and see that.

    Any help or can you point me to a url to see that?
    Sean

    15 x 30 gunite pool with Riverflow Professional 12miles per hour flow (10HP silent ABB pump) to make the entire pool flow - Pentair Intellitouch i10 - Heat pump AquaComfort 110 - Raypak 399k Digital Gas Heater - Pool Pilot Digital SC-48 - Pentair FNS Plus 60 - Polaris 3900 Sport Cleaner on booster pump
    2 x Pentair Intelliflo pumps - one for filter (VF) and second for Venturi Pool Jets (VS) and Jandy 6 set deckjets - Pentair PG2000 Fiberoptic lighting - Automatic PoolCover (Brown) by Pool Cover Specialists

    Winter Pool Bubble by Ameri-Dome

  6. Back To Top    #6

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    Re: Autopilot water flow sensitivity

    Jason

    I looked at the manifold but I cannot see if it is open or closed. Excuse my ignorance but I don't know how to test/check this?

    Thanks
    Sean

    15 x 30 gunite pool with Riverflow Professional 12miles per hour flow (10HP silent ABB pump) to make the entire pool flow - Pentair Intellitouch i10 - Heat pump AquaComfort 110 - Raypak 399k Digital Gas Heater - Pool Pilot Digital SC-48 - Pentair FNS Plus 60 - Polaris 3900 Sport Cleaner on booster pump
    2 x Pentair Intelliflo pumps - one for filter (VF) and second for Venturi Pool Jets (VS) and Jandy 6 set deckjets - Pentair PG2000 Fiberoptic lighting - Automatic PoolCover (Brown) by Pool Cover Specialists

    Winter Pool Bubble by Ameri-Dome

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    DaveNJ's Avatar
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    Re: Autopilot water flow sensitivity

    The check valve is at the bottom of the manifold. Clear piece with a spring. If the spring is extended fully, attachs to a part that blocks off the water flow thru the clear piece. If I have all my valves (spa, swimout, step jets) open I get a check flow indication. Pump on low speed, I have to set the valves to restrict the flow to these items and more to Autopilot.
    IG 18x36 oval vinyl, Spill over spa, Northstar 2hp-2spd, 2.5" piping, S310T 500lb Sand filter, 400k gas heater, AutoPilot SWCG
    http://www.tftestkits.net/

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    JasonLion's Avatar
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    Re: Autopilot water flow sensitivity

    The spring is holding a plunger against one end of the clear section of pipe. At the end of the plunger is a rubber sealing ring, which is red on my unit. That ring should fit tightly against a clear plastic rim. when the pump is on high, it should move away from the rim and water is pass through the clear section of pipe. You want the seal to be flat against the rim, without any visible debris in between.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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