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Thread: Hi I am Rob in Gilbert AZ, new to pool ownership (1 yr), trouble with acid pump

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    Join Date
    Apr 2017
    Location
    Gilbert
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    Hi I am Rob in Gilbert AZ, new to pool ownership (1 yr), trouble with acid pump

    20170424_175641[2042].jpgWe drained and refilled the pool for high calcium, refilled and balanced, last weekend. I am having trouble with a Stenner Pump for acid dosing, it runs but there is no output. Ph is climbing and I am having to add acid manually, and watching a manual dosing I can see that the acid level is unchanging. No acid is being pumped. Are there any ideas out there? I am a new pool owner (first pool, came with the used house we bought). The rubber tube inside the plastic housing seems to be intact, and the pump mechanism appears to run and sound normally. The acid ran dry at the end of last year maybe it needs to be primed. But I don't know how.

    I have had the ph rise to 8 in 4 days, and after adding 2 qts of acid, it is back to 8.0 again in another 4 days. That seems like a lot to me.

    Pool is
    About 12500 gallons, in ground, pebble sheen walls
    Built in 2013 I think
    Using IC40 chlorinator for sanitation
    Controlled by Intellichem panel, hooked up to an Intellichor panel
    Acid and chlorine output are regulated via these devices
    Salt water
    Muratic acid via Stenner Pump 45MPS

    Cartridge filters
    Variable speed Pentair pump

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    GDN's Avatar
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    Oct 2016
    Location
    Dallas, TX
    Posts
    308

    Re: Hi I am Rob in Gilbert AZ, new to pool ownership (1 yr), trouble with acid pump

    Welcome to TFP -

    The stenner pumps are auto priming. Once primed and plenty of liquid to pull from, they don't lose their prime between usages. You could have a clogged input or a crack in the intake piping allowing air to leak in so it won't suction properly.
    Greg -
    11K gal, IG Pebble Sheen (Aqua Blue) with sun ledge and attached spa, Pentair Intelliflow 3050 VS/SVRS (3HP), Pentair ET 8 with Screen Logic, Pentair Racer with 3/4 HP booster pump, 400KBTU Pentair Mastertemp, Pentair 60 sq ft DE filter, J&J Intellibrite LED in spa, Zodiac Nature 2 (not used), Stenner pump/liquid Chlorine, build completed in August 2015

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    Mod Squad Texas Splash's Avatar
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    Jun 2014
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    South-Central Texas, Marion/San Antonio
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    Re: Hi I am Rob in Gilbert AZ, new to pool ownership (1 yr), trouble with acid pump

    Hi Rob and welcome. Besides the advice GND provided on the pump itself, we might need to know what's causing your pH to rise so quickly. Typical reasons for pH climbing are:
    - Elevated TA (what's your TA?). If it's above 60, consider lowering per the TFP Pool School - Lower Total Alkalinity page.
    - Aeration: Spillovers, bubblers, SWG, etc, all contribute to aeration and pH rise. More aeration = increased rise
    - New plaster which your isn't

    Hope this helps.
    Pat (a.k.a. Texas Splash) ~ My Pool: Viking Fiberglass; 17,888 Gal; Waterway Supreme 2-sp/2-hp pump; Hayward Ctg filter; TF-100 w/ Speed Stir
    Vital Links: POOL SCHOOL, RECOMMENDED LEVELS, RECOMMENDED CHEMICALS, Poolmath Calculator, SLAM, Chlorine/CYA CHART.
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    Mod Squad pooldv's Avatar
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    Re: Hi I am Rob in Gilbert AZ, new to pool ownership (1 yr), trouble with acid pump

    Welcome to TFP!
    TFP Moderator
    If TFP helped you or saved you money - Become a TFP Supporter! <--Click here
    2012 build and pics, 20k gal gunite, black onyx pebblesheen, OK flagstone, IntellifoVS, cart filter w/Pleatco, IC40 SWG, Solartouch, 5 12'x4' solar panels, HP50HA heat pump, 8mil solar cover, borates, TF-100 test kit, SONOS, Doheny's Discovery Robot, hot tub on bleach

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