Greetings everyone,
So I've been battling my pool issue for months. What seemed to be a relatively straightforward fix has turned out to be somewhat of a head scratcher.
Specs of pool:
-15,000 gal in-ground pool with adjoining spa
-Hayward Ecostar pump sp3400vsp
-Hayward Pro‑Grid DE3620 DE Filter
-Hayward SP740DE Selecta-Flo Multi Valve
The issue:
All the other 3 pump modes work with no issue at all and the pump primes and runs as expected. i.e. Circulate, Waste and Backwash. However, as soon as I turn it to Filter mode the the jets in the pool and spa on the return begin to decrease in pressure to the point after 10-15 mins the jets are trickling water back to the returns in the pool and spa to the point where it looks like the pool pump is not running (ie the swirls in the water surface). And when I put my hand up to the jets when i start Filter mode they are strong as expected but 15 mins later they are reduced to the pressure of a public drinking water fountain.
So first thing one would say is backwash and problem solved right? I do that and then same issue. Then they say well back wash again. I do that and the issue continues. Then various pool tech shave said well reduce your DE powder amount u add... I've done that many many times and issue still continues.
So knowing that we have the issue narrowed to the Filter mode and the water going through the filter techs have said well u will need to manually pull the grids, clean them, degrease them and then put them back in and your problem will resolved. I've done that probably 7-8 times and the problem still continues. Then the techs have said "hmmmmm, well you will just need to go buy new grids (even tho they were degreased and heavily pressure washed and u could eat off of them they were so clean) and then that will fix your issue". So I go buy new grids and put them in and surprise, surprise, same issue still occurs. So I don't see how it could be the grids themselves although common sense and logic would say it's the grids cuz that's what is straining the water flow and causing the return jets to lose so much pressure. I too agreed with techs and did all of the steps outlined above and have concluded it cannot be the grids.
So the only other question I have to you guys is could there be another point in the Filter mode, like the pipes or something im not aware of that could be killing the water flow and pressure to the return jets? Could there be a blockage or clogging somewhere else upstream or downstream from the Filter that is causing this?
This issue has me beyond frustrated because of how much work I've put into it with no results with countless solutions suggested. I know the issue seems minor but I literally cannot filter my pool cuz the filtration ceases to a trickle after 15 mins.
any help would greatly appreciated and I would deem anyone that can resolve this a frickin genius!!!
Thank you for listening!
So I've been battling my pool issue for months. What seemed to be a relatively straightforward fix has turned out to be somewhat of a head scratcher.
Specs of pool:
-15,000 gal in-ground pool with adjoining spa
-Hayward Ecostar pump sp3400vsp
-Hayward Pro‑Grid DE3620 DE Filter
-Hayward SP740DE Selecta-Flo Multi Valve
The issue:
All the other 3 pump modes work with no issue at all and the pump primes and runs as expected. i.e. Circulate, Waste and Backwash. However, as soon as I turn it to Filter mode the the jets in the pool and spa on the return begin to decrease in pressure to the point after 10-15 mins the jets are trickling water back to the returns in the pool and spa to the point where it looks like the pool pump is not running (ie the swirls in the water surface). And when I put my hand up to the jets when i start Filter mode they are strong as expected but 15 mins later they are reduced to the pressure of a public drinking water fountain.
So first thing one would say is backwash and problem solved right? I do that and then same issue. Then they say well back wash again. I do that and the issue continues. Then various pool tech shave said well reduce your DE powder amount u add... I've done that many many times and issue still continues.
So knowing that we have the issue narrowed to the Filter mode and the water going through the filter techs have said well u will need to manually pull the grids, clean them, degrease them and then put them back in and your problem will resolved. I've done that probably 7-8 times and the problem still continues. Then the techs have said "hmmmmm, well you will just need to go buy new grids (even tho they were degreased and heavily pressure washed and u could eat off of them they were so clean) and then that will fix your issue". So I go buy new grids and put them in and surprise, surprise, same issue still occurs. So I don't see how it could be the grids themselves although common sense and logic would say it's the grids cuz that's what is straining the water flow and causing the return jets to lose so much pressure. I too agreed with techs and did all of the steps outlined above and have concluded it cannot be the grids.
So the only other question I have to you guys is could there be another point in the Filter mode, like the pipes or something im not aware of that could be killing the water flow and pressure to the return jets? Could there be a blockage or clogging somewhere else upstream or downstream from the Filter that is causing this?
This issue has me beyond frustrated because of how much work I've put into it with no results with countless solutions suggested. I know the issue seems minor but I literally cannot filter my pool cuz the filtration ceases to a trickle after 15 mins.
any help would greatly appreciated and I would deem anyone that can resolve this a frickin genius!!!
Thank you for listening!