What could cause a pool pump to barely pump. The motor is running fine .Ican
see water from thr inlet side going into the strainer basket but it never
really builds up very much pressure.The strainer basket never really fills
If debris gets past the filter (usually a basket at the pump inlet) it
can get trapped in the impeller and/or volute. This will result in very
poor performance. I've found that seed pods from some of my trees are
the worst culprit. The repair isn't all that difficult but does involve
separating the pump halves which are frequently held together with a
large band clamp. Once its accessible just clean the debris out and
If this solves the problem the next step is to get a filter basket that
has smaller holes. I've found that some after market baskets have
larger holes and result in the problem.
If debris gets past the filter . . This will result in very
poor performance. . .
This will also happen with excessive back-pressure on the pump. Check the
differential across your filter, and restrictions in the plumbing returning
water to the pool.
You might have to remove the pump vane cover from the motor and clean the pump
vanes. Mine gets clogged with tree debris and it really slows the movement of
the water. Tom
Someday, it'll all be over....
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