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Thread: Air bubbles coming out of Polaris return

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    Unhappy Air bubbles coming out of Polaris return

    I've been noticing that I get small amounts of air bubbles from my Polaris (pressure side) return. I cannot see any visible bubbles from either of my other 3 returns. the bubble are there even when the Polaris booster pump is not turned on. I've attached a picture of my setup. You can see that there is a dedicated return line from the Polaris booster pump. The booster pump sucks the water from the main return (which goes to all 3 pool returns). I know that return line bubbles usually mean some air getting in on the suction side, but if that were the case, then wouldn't I see the bubbles at all the returns?

    My first hunch is to check the suction side connection of the booster. Both at the booster connection and where it connects to the main pool return line. But there are no visible leaks at either connection and I know if I take it apart, it might make things worse

    Any thoughts?
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    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

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    Texas Splash's Avatar
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    Re: Air bubbles coming out of Polaris return

    My first hunch is to check the suction side connection of the booster. Both at the booster connection and where it connects to the main pool return line. But there are no visible leaks at either connection
    I would still look there. But when you say there are no visible leaks, remember if the system is running you probably won't see a leak. It's pulling air "in", so you shouldn't see any drips there. Have you tried the water hose trick or wrapping some of the booster connections with plastic wrap? See if that helps you ID a potential air leak perhaps?
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    Re: Air bubbles coming out of Polaris return

    Quote Originally Posted by Texas Splash View Post
    I would still look there. But when you say there are no visible leaks, remember if the system is running you probably won't see a leak. It's pulling air "in", so you shouldn't see any drips there. Have you tried the water hose trick or wrapping some of the booster connections with plastic wrap? See if that helps you ID a potential air leak perhaps?
    Thanks....yeah, i agree now that you explain it that way. I will try the water hose test first. Given the symptoms, it makes sense that the air is coming in there.
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

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