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Thread: Air in pump basket normal?

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    Join Date
    Apr 2016
    Location
    Dayton, Ohio
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    31

    Air in pump basket normal?

    Just learning the ins and outs of my VS pump. On higher speeds there is no air in pump basket. On extended low speed 1000-1750 rpm there are big bubbles in top of basket. My PB said it s because of the lower speeds I have the pump on. I don't understand the principal. Is that a reasonable explanation or should I be worried about a suction leak. New pool. Water level top of skimmers. Everything working fine otherwise. Pressure normal on filter it seems. Thanks
    26,000g IG, Fiberglass side/Concrete bottom, epoxy paint, Pentair IC40 SWG, Pentair Cartridge Filter 420, Pentair Intelliflow 3 HP VS pump, Pentair 120 Heat Pump, pool installed 11/2015, painted and equipment installed 4/2016. City Water.

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    Richard320's Avatar
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    Jan 2010
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    Re: Air in pump basket normal?

    Normal.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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    Re: Air in pump basket normal?

    Periodically open the air relief on the filter to let out the air. If air comes out every time, you might have a suction side air leak. If it only comes out the first time, all is well.

    Also watch for air in the return water. Check while the SWG is off, because the SWG makes hydrogen gas while on and you will see tiny hydrogen bubbles coming from the returns.

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    Apr 2016
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    Re: Air in pump basket normal?

    Quote Originally Posted by JamesW View Post
    Periodically open the air relief on the filter to let out the air. If air comes out every time, you might have a suction side air leak. If it only comes out the first time, all is well.

    Also watch for air in the return water. Check while the SWG is off, because the SWG makes hydrogen gas while on and you will see tiny hydrogen bubbles coming from the returns.
    Thanks, I only see return gas bubbles when SWG on. Is air relief valve on the filter pressure gauge at the top somewhere? Didn't know there was a relief valve TBH. Haven't figured a lot out yet.
    26,000g IG, Fiberglass side/Concrete bottom, epoxy paint, Pentair IC40 SWG, Pentair Cartridge Filter 420, Pentair Intelliflow 3 HP VS pump, Pentair 120 Heat Pump, pool installed 11/2015, painted and equipment installed 4/2016. City Water.

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    Re: Air in pump basket normal?

    The air relief is the assembly on top with the pressure gauge. Grab the round part that the gauge is screwed into and twist counterclockwise. Air and/or water will come out of the hole on the assembly. Block the water coming out if it will squirt on anything that shouldn't get wet.

    Once water comes out twist clockwise to close.

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