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Old 11-14-2008, 08:37 AM   #1
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Sump pump performance


I'm trying to help a friend with a sump pump concern. We had a ton of rain in our area in the beginning of the summer and at on time the water level was just a few inches from the top of the pit. the pump ran nonstop for 2 days but did clear it out. This is probably normal from what people have told me considering the circumstances.
The odd thing seams to be that when we tried to test it with a few gallons of water, it pumps it out but after a few seconds about 2/3rds of the water flows back in through the drain tile. the pump keeps recycling and eventually will get rid of it all after a while. It is not coming back through the discharge piping. The check valve is fine and the pump is new.
I've heard that this can be normal too but it seams a little odd to me. Any insight is much appreciated...

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Old 11-14-2008, 10:10 AM   #2
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Seems like the check valve would have to be leaking if 2/3 runs back in.

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Old 11-14-2008, 11:22 AM   #3
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Sump pump performance


Quote:
Originally Posted by ajarofclay View Post
but after a few seconds about 2/3rds of the water flows back in through the drain tile.
Temporarily very high water table. . .?
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Old 11-14-2008, 11:25 PM   #4
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I don't think it's the check valve. As I said; It's not coming back through the discharge. It's coming back in from the plastic drain tile.
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Old 11-15-2008, 08:28 AM   #5
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check where the water is discharging to. I inadvertently layed out my discharge line so that water going out was finding its way back inside.
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Old 11-15-2008, 08:49 AM   #6
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Can't tell. He bought the place used. It discharges underground and is actually underneath a concrete patio. How was yours "inadvertently" done Dude?
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Old 11-15-2008, 09:15 AM   #7
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my pump was in the basement, had the hose going out the window, was pitched down hill but hose curled up, the water was flowing back in by way of the cellar hatch way. It wasn't the best of hook-ups but it kept the water away from the furnace, the area was alot of ledge. In your case, the drain pipe might be clogged, maybe running some water through it and looking at surrounding outside area you might be able to see where its discharging to. It seems like your discharge water is finding its way back inside. good luck
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Old 11-15-2008, 11:17 AM   #8
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Thanks,

I don't think it empties above ground anywhere that I saw. Maybe it's in an underground gravel basin? I'll have to look again. If anyone else has some insight I'll be happy to hear from you. Like I said, I've never had any personal experience with basements.
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Old 11-15-2008, 11:41 AM   #9
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depending on just how curious you are, you could try snaking the discharge line out, being careful, some pipes are clay in which case you don't want to crack it, maybe feed a line into the pipe, get an idea of how far you can get, taking note of direction of existing discharge pipe, you may want to do some digging in the ground. Ground water carries silt, the line is going to clog at some point. As for how long the pump runs, my place at the time, a lot of ledge, water would rise to temp water table and hold. I used the pump to keep level below my furnace. Sounds like in your case, some water is passing but some is being diverted back inside, a partial clog.

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