Meant to do the OCLT the last two nights and I get side-tracked and haven't done it yet. Going to try tonight. Filters are C-7490; 7"x7"x32".
Hayward filter pressure high
- Thread starter GMTK
- Start date
cwswifty
Well-known member
- Sep 14, 2023
- 78
- Pool Size
- 26500
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
I wonder if maybe you should try running the pump for a few minutes without the cartridges installed? That would tell you if they are what's restricting the flow or not.
- Jun 22, 2014
- 47,885
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
That's a good thing. So if you aren't see the filter psi go back down to what you normally see after a filter cleaning (i.e. 14 psi), perhaps those carts somehow got coated with some oils or something. You mentioned earlier you are ordering new carts right? As noted above, before ordering the new carts, perhaps run the system for a few minutes without the carts installed to see if that effects anything.
Ok. Going to run it tomorrow for a little while without the carts. I also ordered 4 new ones. I know 2 of them were bought in 2019 but I don't know how old the other 2 are as we moved in during summer 2019.
New filters arrived and also ran the pump without filters. Running on high speed. With old filters = 20-21 psi. Without filters = 12 psi. With brand new filters = 12 psi.
So I'm going to say the old filters were old enough and had enough buildup internally that they were the cause. I'm going to read up on the acid bath for them and keep them for extras.
Thanks to all for the guidance.
So I'm going to say the old filters were old enough and had enough buildup internally that they were the cause. I'm going to read up on the acid bath for them and keep them for extras.
Thanks to all for the guidance.
cwswifty
Well-known member
- Sep 14, 2023
- 78
- Pool Size
- 26500
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
Don't acid wash them before you soak them in a cleaner because then you'll surely throw them out as the oils and such will never come out after acid wash.
I can't say if it's an old wives tale, or I was just lucky with my sample size of exactly *1*, but my fair skinned kids were little and wore tons of sunblock for years, with tons of get togethers and full blown parties. I was definitely on the higher side of normal oils/lotions and the filters came out better than new every fall with a 50:1 MA bath for 24 hours.
Agreed. By the time i stumbled upon that nugget, I had been doing it for 7 or 8 seasons and had proven my water/chemistry/filter residuals to be ok with it. I always stress ones milage may vary and only suggest it when the filters are being thrown out with nothing to lose.
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