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Jandy 1.5 hp pump with jandy ae 2500 heat pump low flow

Experiencing sudden low flowproblem (worked first week) my hayward de filter reads as low as 5 psi i carefully cleaned , rinsed and reloaded the de to no effect. the hopper in the motor is nit completelyfiling with water nor is it ait bound
what could be causeing this decrease in pressure at the de filter since the advent of the a45oo???

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IF FILTER CUP IS NOT FILLING COMPLETLY THERE IS A AIR LEAK CHECK ALL HOSES AND FILTER FITTINGS

Posted on Jun 10, 2009

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Posted on Jan 02, 2017

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My pressure or psi has droped for some reason its a hayward new 1 hp pump about a year it should be running at about 10 psi I know when the psi rises I need to backwash as I have a had a pool now for about...


Some thoughts.
I have a Hayward pump. The other day my gauge jumped a gear inside and suddenly my pressure went up 5 psi from 15 to 20. After I backwashed, I saw it didn't drop and opened the gauge and saw the problem.
What kind of filter do you have? If you have one with filter cloth, like DE, a torn or damaged filter cloth could cause a drop in pressure.
Is filter flow better or worse than normal?
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The pressure gauge on top of the filter only reads 5 psi. I backwashed and added DE and it still only reads 5 psi. It also read 5 psi after filter was backwashed and before DE was added. What prompted me...


Is there good water flow? Can you feel good flow at the pool return?
If so, using your hand, try to stop the flow. Does the pressure go up?
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Here is a link to the hayward manual. Be sure to follow the pre-coating insturctions carefully.
Use only the swimming pool grades of
diatomite, such as:
CELATOM . . . . . . . . . . . Eagle-Picher Industries, Inc.
AQUA-CEL . . . . . . . . . . Johns-Manville Products Corporation
DICALITE 4200 . . . . . . . Grefco, Inc.
WITCO . . . . . . . . . . . . . Witco Corporation
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Here is a link to the hayward manual for a EC-50 I think its almost the same as the EC-45
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