Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Reduced filter pressure?

  1. Back To Top    #1
    deanchat's Avatar
    Join Date
    Feb 2008
    Location
    Tidewater, VA
    Posts
    28

    Reduced filter pressure?

    Hi Everyone,

    I did a backwash three days ago and everything went well with filter pressure on target with its norm (my filter runs 11 psi empty and 14.5 psi with a new, post-backwash DE charge). Yesterday I noticed the pressure was about 2 psi low and today it is the same (about 12.5 psi). Usually I get a pound or so increase within a few days of a backwash (as it sucks in new dirt and dead algae and stuff. Water was completely clear before backwash and is still that way. Skimmer and pump basket are clear. Water flow at the step jet seems good. Any ideas what could cause the pressure to drop a couple pounds two days after a backwash?

    Thanks,
    Dean
    37x16 IG vinyl, about 20K gals
    Pentair FNS 60 DE filter
    3/4 hp Pentair Challenger pump
    1 skimmer, 2 bottom returns + 1 step jet
    AutoPilot Dig 220

  2. Back To Top    #2
    Mod Squad Jimrahbe's Avatar
    Join Date
    Jul 2014
    Location
    Bedford, TX
    Posts
    9,299

    Re: Reduced filter pressure?

    Dean,

    As long as your return flow is good, then I would not worry about it in the least.

    Thanks for posting,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

  3. Back To Top    #3
    deanchat's Avatar
    Join Date
    Feb 2008
    Location
    Tidewater, VA
    Posts
    28

    Re: Reduced filter pressure?

    Down another pound (now 3 lbs below normal). Something is going on here...
    37x16 IG vinyl, about 20K gals
    Pentair FNS 60 DE filter
    3/4 hp Pentair Challenger pump
    1 skimmer, 2 bottom returns + 1 step jet
    AutoPilot Dig 220

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •