Dirt by return Jets, a little low on DE pressure

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Parlett316

Parlett316

Member
Sep 27, 2020
19
Maryland
Pool got a bit cloudy so I started a slam. Brushing the bottom it there would be a cloud of white sand like stuff. I assumed algae. When I vacuumed I saw bits of black debris come back through on the cleaner jet and a return jet. Completely disassembled the DE filter and recharged. Noticed the pressure has been steadily at 12 PSI. Just a tick below the CLEAN mark.

Then I noticed the check valve between the filter and the pump was installed so that if the water is going from south to north the valve was sitting east to west (including the pic).

I will edit this post with more info and current chemistry since I’m posting from the app.

Edit: I did not test for PH yesterday or last night, two days ago before SLAM it was at 7.6

Also noticed that after the pump is running and I turn it off, big ol air bubble in pump basket, not sure if normal, included a pic. When the pump is off and basket is removed I can hear a noticeable hiss from the pump.

This morning 7:10am
FC - 20.5
CC .5
CYA 55

Last night 11:38 pm
FC 22
CC .5
CYA 55

I thought I had my stuff in my signature, will update that too.
 

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Last edited:
I see what you're saying about the check valve. Can you take some overall photos of the equipment pad. I think we can figure out what's going on. We need to know why the check valve is there.
 
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If the check valve is now installed properly, it should prevent your filter from draining when the pump is off. I can't see another reason for the check valve.

I'll ask @Jimrahbe to check my work. HE know what he's talking about...
 
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I just turned off the pump and let the water settle with the basket out, no hiss this time. About 30 minutes ago I vacuumed the floor and have not noticed a return of the stuff I was seeing. I'm about to do another FC\CC test in a few minutes.
 
Just did the test:

FC - 21.5
CC - 0
So only a a .5 drop since 7am, not bad.
Added liquid chlorine to get it back up to 22. Still no signs of anything coming through the cleaner and return lines. DE filter pressure at 12psi has me puzzled though.
 

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Parlett316 said:
Since installation pressure was typcally around 20psi where it indicates Clean. Is it abnormal for the pressure to be at 12psi?
Click to expand...
12 psi is fine. That happens to be my filter's clean pressure. Cleaning a dirty filter will reduce pressure. Is it possible you saw 20 psi when the filter was dirty?Having the diverter valves in different positions and varying pump speeds affect pressure as well. I was checking out some of your previous photos and found this one from 2021. Check out the filter pressure:

1690926304957.png
 
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Rancho Cost-a-Lotta said:
12 psi is fine. That happens to be my filter's clean pressure. Cleaning a dirty filter will reduce pressure. Is it possible you saw 20 psi when the filter was dirty?Having the diverter valves in different positions and varying pump speeds affect pressure as well. I was checking out some of your previous photos and found this one from 2021. Check out the filter pressure:

View attachment 518989
Click to expand...
Lmao that’s awesome work. Dang! Thanks I appreciate your help today.
 
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