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Thread: Pump problems

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    kdubya815's Avatar
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    Pump problems

    Hello all! I am opening my pool and I got the pump running. The problem is that the part where you can see the water (I don't know the technical term!) never fills up all the way. The motor runs fine, there is water coming out of the returns into the pool, with lots of big bubbles and gurgles. After awhile of letting the pump run, water pools underneath it. I am thinking that it may be cracked. I have examined all the equipment and piping to see if I can trace down the origin, which I can't. That leads me to believe that it must be cracked in that area and it must be cracked on the bottom. Is there any hope of repairing it or do I just need to replace it? As always, thank you for your help!!

    Kelly
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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    Re: Pump problems

    I think your assessment is correct. Can you post up details of what pump you have? Most of them have parts available. Step one will be to find the crak if it is one that can be repaired.
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
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    Re: Pump problems

    A few other things you may want to check...

    1. Is the water line very low on your skimmer? If so than fill the pool so water is half way up skimmer opening.
    2. Have you completely cleaned your pump basket, filter and skimmer basket?
    3. You can spray soapy water around fittings and the pump and if you have a leak on the return side it will bubble up and on the suction side the soap will get pulled in.

    Can you post the make and model of your pump as this would help us determine the part you would need if in fact the pump housing is damaged, thanks!

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    Mod Squad zea3's Avatar
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    Re: Pump problems

    I have a couple of questions for you. Did you winterize the pool, as in drained below the skimmer and return, cap them off, drain the plumbing including the pump and filter? If not did you have a hard freeze?
    TFP Moderator
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    Re: Pump problems

    I wouldn't be in a big rush to assume you have a crack. Your description does not indicate that. What you DO have for sure is a suction side air leak. That CAN be a crack in the pump strainer basket housing or it could be anywhere along the suction side of your system....all the way back to the skimmers.

    If the pump strainer basket housing was cracked, I believe you would see water accumulate under the housing with the pump off.....not with the pump on.

    I would inspect that housing carefully for an obvious crack and, if you don't see it, read the article in Pool School on suction side air leaks and go from there.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Pump problems

    Check the pump drain plugs. Someone might have forgotten the O-ring when they put them in after winter.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Pump problems

    Thank you for all your help! My pump is a Hayward Super Pump single speed 1 hp. I did not winterize my pool And yes, unfortunately we did have a pretty harsh winter. I was scared silly to even try to assess the equipment. Never doing that one again!

    I actually drained the pump to inspect inside and I did not see any cracks. I know I have one leak in the plumbing which I am going to fix. However, I know this leak is not the cause of the severity of the issue because I had that same leak last year minus this problem. Another interesting observation is that when I cut off the pump, of course water rushes back to it from the filter. When this happens, a mini flood occurs underneath the pump.

    I am off to read Pool School. Any further help is appreciated!!

    Thank you!
    Kelly
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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    Re: Pump problems

    Sounds like a shaft seal to me.
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

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    Re: Pump problems

    I am not sure what a shaft seal is. Please explain a little further for me. Sorry to be a bother.

    Thanks!
    Kelly
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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    Re: Pump problems

    No worries. Currently have a 3 month old I'm rocking. May take a few...
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

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    Re: Pump problems

    After awhile of letting the pump run, water pools underneath it.
    when I cut off the pump, of course water rushes back to it from the filter. When this happens, a mini flood occurs underneath the pump.
    Well, that second quote is different......that would indicate the housing is indeed cracked.

    Does the housing leak when the pump is off or on?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Re: Pump problems

    Part number 10 on this schematic.
    http://www.aqua-man.com/schematic.asp?kc=S848
    Pool supply world sells a full gasket kit that has the shaft seal in it. I think it is called a go kit.
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

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    Re: Pump problems

    Are you sure the water is not coming out of the pump lid? Pump basket lids are not meant to seal when under pressure so when the pump shuts off and the air in the filter pushes the water back through the pump, the water can easily squirt out of the lid. Next time you turn off the pump watch the pump lid and see if the water isn't coming out there.

    BTW, a bad shaft seal will leak more when the pump is running than when it is stopped so I don't think it is a shaft seal.
    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

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    Re: Pump problems

    While the pump is running, water pools underneath it but not a huge volume. It never fills completely up, only about to the top of the skimmer basket. When I shut it off, water rushes back to the pump from the filter and momentarily fills it up all the way. Immediately water just rushes out. Once it rushes out, I don't see any further leaking, but the pump is filled about half way with water still. So, after watching it closely several times, I think I may need to replace the o-ring (or gasket) to the drain plug on the front. Now I am wondering though if there is a bigger problem that I can't see which causes the water to rush out as I turn it off. Hopefully I am making more sense?

    - - - Updated - - -

    I thought about the pump lid too, but I have ruled that out. I watched it several times and it comes from underneath.
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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    Re: Pump problems

    As I posted earlier, water rushing out of the pump basket when the pump is shut is a consequence of air in the filter which in turn is probably caused by an air leak in the same pump basket lid. In other words, these two issues could be related and caused by a bad pump lid gasket. I would replace that first before proceeding to anything else.

    However, if you are getting water under the pump while the pump is running, that is probably a bad seal.
    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

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    Mod Squad zea3's Avatar
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    Re: Pump problems

    Can you post a video of the problem?
    TFP Moderator
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    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
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    Re: Pump problems

    Quote Originally Posted by zea3 View Post
    Can you post a video of the problem?
    GREAT idea
    TFP Moderator Chris V. ~16K Pool & Spa, 48NSF DE, IG Plaster Circa 2000, Intermatic PE653, Challenger pump with a 2 speed B2984, 20gal stenner chlorine injection, Houston, TX
    One cannot follow Islam and Christianity at the same time, nor can one follow pool store methods and TFP at the same time.
    Pool School -- Pool Math -- TF-Test Kit

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    kdubya815's Avatar
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    Re: Pump problems

    I will post a video ASAP. It is about to storm here so it may be tomorrow.
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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    kdubya815's Avatar
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    Re: Pump problems

    How do I post a video?
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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    kdubya815's Avatar
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    Re: Pump problems

    I think I might have figured out how to post a link to my video. http://www.dropshots.com/kward815

    I did try to replace the rubber gasket on the drain plug in the front but it wasn't the correct fit so I know there is water coming out there. Even still, this is pretty much what was happening before I tried that. I am really concerned that it won't fill up any more than it does while the pump is running. I need to begin the SLAM process asap but I am not sure if I should until I get this problem fixed. Thoughts?

    Again, thanks for all your help!
    Kelly
    18x36 Grecian style vinyl 23,000 gal inground pool, Hayward Pro Series S220T sand filter, Hayward Super Pump 1 hp.

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