Question about Pentair 3hp Whisperflo Pool Pump In - Ground

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I have a Shasta pool from 1996. I replaced the

I have a Shasta pool from 1996. I replaced the plunger and the pool seemed to loose it's suction. I've tried filling the lines with water and I can't get it to start sucking water from the pool. The motor seems to work fine.

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Either you have an air leak somewhere on the suction side or your impeller is very clogged. you can fill the pump with water and turn it on, it should try to pick up prime, right when it starts to pull in some water turn it off and try to listen for air leaks or water squirting out somewhere on the suction side. Also, remove the pump basket and try to feel the impeller to see it there is any debris in it. the main cause for a clogged impeller is a cracked or broken pump basket. Also, if the pump has run dry for any period of time, the threaded fitting on the suction side of the pump can shrink and cause a large enough air leak to keep the pump from priming.

Posted on Nov 14, 2009

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Posted on Jan 02, 2017

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Hello,
If you are still looking for some solutions, here they are.
Start by plugging both your out put and input in the pool
or simply close the plungers
If you are uncertain the flow sensor is ok then blast it out with the garden hose. Make sure it swings freely
now take out your cartridge and blast it too
now remove your hose from the inlet to the pump
even though you may be skimming and things go in the basket hair still gets through and cloggs up in front of the filter
this also will happen with out a skimmer
Put it all back together and now open the top bleeder on the cartridge cover
open outlet side hose first
when water starts comong out the bleeder open the inlet hose
now turn on pump for 30 seconds and then close the bleeder
This should do it
Please remeber to rate this solution

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The first pump housing O-Ring I bought was from Leslies Pool Supply and was an after market part. I was the right size, but the rubber was too hard to allow it to compress and slide into the housing. I got the Shasta brand replacement part and the pump housing slid right in!

I guess stay with the original manufaturers parts to assure top performance.

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