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Thread: Pump Housing Blew-but why?

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    Join Date
    Jul 2014
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    LaGrange, KY
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    7

    Pump Housing Blew-but why?

    Last night my husband added water to the pool. Realizing he overfilled, he turned in the backwash to let the water out. He was working in the dark and thinks he turned something too quickly in possibly the wrong direction, but he heard loud pressure rising and the pub housing/body totally cracked-and that is pretty thick plastic. It is a Jandy pump body.

    Any ideas what happened? This is an inground pool, and we have only been in the house for about a year and half. Pool is 9 years old. Could the plastic have been dry and cracked already? I just want to make sure we aren't missing a larger issue.

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    carlos31820's Avatar
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    Nov 2010
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    Midland, Georgia
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    345

    Re: Pump Housing Blew-but why?

    Did he turn it while the pump was running? You're supposed to turn off the pump before moving the multi-valve.

    16x36 Vinyl Pool - 22.5K gallons.
    Jandy Stealth 1hp pump - Jandy CS-150 filter
    Jandy Legacy 250k heater - Jandy Ei SWCG
    Jandy Watercolors LED light
    Paramount Vanquish in-floor cleaner

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    TFP Guide

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    Re: Pump Housing Blew-but why?

    It's possible he dead headed the pump while it was running, that can cause a water hammer strong enough to break the pump body. I would suggest not turning the spider valve while the pump is running in the future.
    Chuck-
    15x30 Above ground, Pentair Superflo VS, 19" sand filter, TF-100 test kit
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    Re: Pump Housing Blew-but why?

    I bet that's what happened! Thank you!

    Do you think it could have messed with any plumbing that we can't see?

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    TFP Guide

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    Re: Pump Housing Blew-but why?

    What ever valve it was that was turned could also have been damaged but that's hard to tell. It would be worth looking it over carefully for cracks or other signs of damage.
    Chuck-
    15x30 Above ground, Pentair Superflo VS, 19" sand filter, TF-100 test kit
    Aqua Comfort ACT750 heat pump / 6x20 ground mount solar panel / DIY automation

    Photos of 2016 Build, Inside Your Breaker Panel, Free Copy of 2017 NEC code
    TFP is funded by member support click here to help

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