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Thread: Two speed pump has air on low

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    pooly1's Avatar
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    Two speed pump has air on low

    I see a lot of issues VSP pumps having air at a lower RPM. Would that also affect a 2 speed pump. it has an air bubble constantly at the top. I just replaced the motor on my duraglass with a 2 speed.
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    Mod Squad jblizzle's Avatar
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    Re: Two speed pump has air on low

    Mine does too. Does not lose prime when off and do not find any air in the filter. Seems normal.

    I have left is on low for weeks and the bubble gets bigger and bigger, but does not get into the filter or pool. Goes away on high speed and then I make sure to purge the filter, not much air in it though.
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    pooly1's Avatar
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    Re: Two speed pump has air on low

    Guess I shouldnt worry then
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    DaveNJ's Avatar
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    Re: Two speed pump has air on low

    Have had the same issue for 5 years.
    IG 18x36 oval vinyl, Spill over spa, Northstar 2hp-2spd, 2.5" piping, S310T 500lb Sand filter, 400k gas heater, AutoPilot SWCG
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    pooly1's Avatar
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    Re: Two speed pump has air on low

    I noticed I have no PSI either is that normal?
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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    Mod Squad jblizzle's Avatar
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    Re: Two speed pump has air on low

    If water is moving you must have some pressure. I think my registers 2-4 or something small on low speed, but up around 16 on high speed.

    Is your needle really sitting on 0 ... and the same place when the pump is off? What about when on high speed? Could be a bad gauge.
    Jason, TFP Moderator
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    Vette's Avatar
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    Re: Two speed pump has air on low

    I have an above ground so no problems with priming, but I always have the little air bubble on low. And usually my PSI registers around 2-3 when on Low.
    11,700 gallon 21' round 54" deep all-resin AGP - June 2012
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    pwrstrk's Avatar
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    Re: Two speed pump has air on low

    Same here also. I've got 2-3 psi on low speed.


    Jeff
    24'x54" AG Morada RTR (by wilbar) 13'500 gal. Hayward Powerflo Matrix 1hp 2 speed. Hayward Perflex EC65 DE filter.

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    Brentr's Avatar
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    Re: Two speed pump has air on low

    Quote Originally Posted by pooly1
    I see a lot of issues VSP pumps having air at a lower RPM. Would that also affect a 2 speed pump. it has an air bubble constantly at the top. I just replaced the motor on my duraglass with a 2 speed.
    Hi pooly1 can you give me the specifics on your 2 speed motor and the cost? I have a 1.5 hp duraglass that I would like to eventually change to a 2 speed. Thanks
    6,000 gal, IG free form,Beach Series Antigua by Marbletite Pebble finish,Sheer Descent, IG Fountain, Dolphin / Mermaid Statues,Dura- Glas 1.5hp pump,Hayward Pro-grid DE4820, Aqua Rite SWG with T-Cell 15,Heat Siphon Heat Pump DX 5.0 109,000 btu, Pool Cage, 1800sq ft Tremron Estate Pavers,Aquatherm Ecosun Solar Panels 192 sq ft with GL-235 Controller,Pentair IntelliBrite, Apollo Magnetic Stirrer Our New Poolbuild, Jacksonville, FL yr 2009 Solar install Outdoor kitchen upgrade

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    pooly1's Avatar
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    Re: Two speed pump has air on low

    I have/had a duragals I pump with 3/4hp motor and had the motor replaced with a 2 speed 1 hp cost was 283.00 for the pump and an additional 30.00 to have them install the 2 seals(I did it last time and it was so of a bear to tap the ceramic seal on and seat it correctly. I went through the company below as I had a good experience with them previously. Also they do not come with the 2 speed switch just an FYI.

    http://www.electricmotorwarehouse.com/4 ... flange.htm
    16 x 32 Inground Vinyl 21000, 2 returns, 1 skimmer, 1 main drain. Raypak Heater, Crystal Flo Sand Filter

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