Question about Hayward EC75 HAYWARD PERFLEX FILTER SYSTEM W/1HP PUMP

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We have aEC-65 hayward pool filter with a 1HP motor why does the pump slow down run at higher pressure ?

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I believe that this particular model is a DE pool filter. Is that correct? If you are operating with a media other than DE, let me know. Assuming that you ARE using DE:
1. You DE could be coated to the maximum with pool dirt algae, etc. To correc this problem, you need to bump the filter.
2. You could have an overcharge of DE. To remedy,
Bump-Drain-Recharge.
3. Restriction in return line caused by small
eyeball fitting. To correct, change to a larger sized fitting.
4. You could have a partial closed valve on a return line. You will just need to open the valve.
5. Make sure that your pump strainer basket and pool skimmer basket are not clogged.
6. Make sure that your pump impeller valves are not clogged.

Posted on May 26, 2010

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Posted on Jan 02, 2017

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Will a smith 1hp pump fit in place of a hayward 1hp


as long as the frame size matches i.e. 56J in this case then you should have NO issue with changing the motor mfg.

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I presently have a Hayward EC 60 (yes 60) pool filter and a 1 horse power motor.. It works well but it does not support the new Pool Vac cleaning robot I purchased. It supported my old Pool Vac, but not...


if you buy an adaptor,should be a 1 1/2" dia hole,in the bottom of the skimmer, put it in the skimmer hole,put your vac line on that, turn the valve to it's on full skimmer, it will work,
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1 Answer

Pressure is running very high just cleaned fingers with acid and did not help we just had new liner put in pool is filled and have salt water system so there are no chemicals in pool yet because generator...


Depending where you live and how high your minerals run in the water. If it is old enough to change the liner it is probally old enough to get new socks for the fingers.

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Hayward 1HP for in-ground pool: When I shut the pump off sometimes DE backflows from the filter through the pump and into the pool and accumulates on the bottom. The pump is about 10 years old and it just...


Usually caused by a small air leak somewhere on the pressure side of the system. A check valve on the line coming out of the pump going to the filter will solve problem.

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Pump loses presssure when automatic pool cleaner is installed


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If you have cleaned the fingers in acid you may have to replace the socks on the fingers.

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My pool pump is 2 months old. It is a Hayward 1hp


The capacitor is probably bad. It's under the cover on the side of the motor, Take a look and smell it. A motor shop has them, or Grainger

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My hayward de filter will not filter over 1 hour


How much DE are you putting in it??? If it is a EC40 then no more than 4 small coffee cans of DE.
If it is an EC65, then no more than 6 - small coffee cans of DE. ( you can even shy back by a 1/2 of can of DE, without any problems.
Is the pool green??? If so, the filter will continue to plug up until clean.
Keep your Chlorine abit on the high side...DE filters run best with a chl reading of 3.0

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1 Answer

I have a brand new hayward filter for an in ground pool. The system uses D.E. The problem I'm having is after it's running for approx 30 minutes it looses all pressure. I've tried back washing it...


you might change out the D.E. media. you can also run it without any media to see if it looses the pressure after 30 min. mor than likely it is just time to change.

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