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

Thread: Hayward Power-Pro Matrix Pump Problem

  1. Back To Top    #1

    Hayward Power-Pro Matrix Pump Problem

    I believe my pump is cavitating.

    I have a clear strainer cover on my pump, so I can see what is going on in the strainer assembly.

    When I remove the strainer cover it fills up with water, and will over flow. When I replace the cover there is only a small air space in the pump. Then after I run it for a few minutes the water level drops back down, and only fills the strainer assembly half way.

    Also, my filter is only showing 4 psi, and it should read at least 5 psi per the new running reading last season.

    I have replaced all of the o-rings and checked for a good seal, but air is still getting in there somehow.

    Any suggestions?

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Hayward Power-Pro Matrix Pump Problem

    That isn't cavitating. Cavitation makes a loud noise and no air accumulates in the pump.

    That is air getting into the pump, either from a leak or from the skimmer or from the strainer basket lid. Check that the water is high enough in the skimmer to be sure air isn't being drawn in through a vortex. You can also try spraying water on various pipes to see if the air in the pump disappears. If the air in the pump disappears with spraying water on a pipe you have found where the leak is.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3

    Join Date
    Jun 2007
    Charleston, SC

    Re: Hayward Power-Pro Matrix Pump Problem

    I have the same pump, and the seal between the lid and the pump is horrible.

    You need to bolt the pump down if its not already (youll need to put a lot of torque on the lid).

    Here is what I did to fix the exact same problem:

    Take the lid off, pull out the rubber o-ring that goes all the way around. Run a bead of some kind of gasket lube/seal in the hole where the o-ring was. Put the o-ring back in and push it down into the lube. Run another bead on top of the o-ring.

    When you put the cover on, put some torque into it and turn it on good.

    Stopped my pump from sucking in air like it sounds like yours is doing.
    18' Round ABG (8000 gallon)
    Hayward X-Stream Cartridge Filter
    1.5hp Hayward PowerFlo Matrix Pump
    80 sq. ft. solar panels
    Goldline automated solar controller

Posting Permissions

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