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  1. #1
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    Default Re: New pump install problems-help

    I believe the SWG needs 20 GPM to guarantee proper operation.

    Not so worried about the bubble at the top of the basket on low speed but the stream of small bubbles moving around inside the basket worry me more. I was wondering if not getting enough flow from the suction side could cause something like this- I plan to re-plumb the suction side to get rid of all the crazy elbows and see if that solves the bubbles/low flow problem.

  2. #2
    Poconos is offline SuperMod Emeritus Whizbang Spinner Poconos 4 stars Poconos 4 stars Poconos 4 stars Poconos 4 stars Poconos 4 stars Poconos 4 stars
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    Default Re: New pump install problems-help

    Cleaning up the installation to remove the extra bends will certainly increase flow. I really don't understand why the cell needs 20 GPM to function. Is there a way to adjust the limit to a lower flow rate? A question, is the flow sensor sensing the flow correctly? I'd still try and determine what your actual flow rate is.
    Al

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    mas985 is offline PF Supporter Whizbang Spinner mas985 3 stars mas985 3 stars mas985 3 stars
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    Default Re: New pump install problems-help

    Garvacious,

    What were the specs on the old pump? HP & service factor and/or model #?

    What was your filter PSI before and after pump change?

    With 1 1/2" plumbing, you could be sucking some air into the system if the suction is much higher than what is was before. It is unlikely that the pump is cavitating because it takes quite a bit of blockage to do that.

    The Superpump has a low SF so it shouldn't have much more braking HP than your previous pump. Unless, there is a good reason to upsize the pump I would stick with the same HP or even lower. You might want to consider a more efficient pump such as the Whisperflo or even Intelliflo. They cost more up front but will likely save you money over the life of the pump.

    As for the SWG, it sounds like the flow switch isn't making contact on low speed. Try unscrewing the switch and adjusting the contacts (assuming that is the type of flow switch you have). Also, orientation of the switch can sometimes make a difference. Make sure it is pointed in the right direction.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  4. #4
    Join Date
    Jul 2006
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    Default Re: New pump install problems-help

    My old pump was ancient, rusty, and seemed smaller in size than the superpump. The motor looked a bit newer like it had been replaced at some point. The motor was a 1HP Magnetek "E-Plus", I remember it was 6amps at 240V but never noticed the S.F. rating.

    My old filter pressure was only about 3psi clean but I got great flow. I have no heater, only the DE filter and SWG.

    With the 1.5HP superpump I get 10psi on the clean filter. Seems like a LOT of flow on high speed, almost too much without the Polaris cleaner hooked up.

    Ordered a replacement 1HP unit to swap for the noisy 1.5HP, we'll see how it goes...I notice the 1HP superpump is only 5.8A on high speed, where the 1.5HP is 8A!

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