Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 12 of 12

Thread: Grumbling Hayward Tri-Star pump

  1. Back To Top    #1

    Join Date
    Jun 2014
    Location
    Socal
    Posts
    11

    Grumbling Hayward Tri-Star pump

    Hey guys, I have an Hayway Tri-Star pump SP3220Z1DV and it recently started making this weird noise as if there is some debris. I've taken it apart and replace the ceramic and graphite bearings along with the white plastic inpellar ring. Is this improper installation? Or do I need a new impeller?

    I've ran the motor by itself without the front section connected and it was silent.

    Hayward TriStar pump sound - YouTube


    Any ideas what this might be? Pump seems to be working fine other than the noise

  2. Back To Top    #2
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    14,999

    Re: Grumbling Hayward Tri-Star pump

    Hey eneka! Welcome.

    I just wanted to welcome you, and get your post moved to the top. Hopefully youll get a good answer soon enough. Hope you enjoy the forum.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

  3. Back To Top    #3
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,983

    Re: Grumbling Hayward Tri-Star pump

    That sounds a little like cavitation. Has the filter pressure changed at a all from when it was working properly? Did you recently vacuum up a lot of debris from the pool?
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  4. Back To Top    #4

    Join Date
    Jun 2014
    Location
    Socal
    Posts
    11

    Re: Grumbling Hayward Tri-Star pump

    Quote Originally Posted by mas985 View Post
    That sounds a little like cavitation. Has the filter pressure changed at a all from when it was working properly? Did you recently vacuum up a lot of debris from the pool?

    So if I'm understanding cavitation correctly, it's either a clogged suction line or air leakage?

    There has been quite some debris, mainly twigs I fished out of our kreeppy krauly when it gets stuck at the flapper, but nothing out of the ordinary.

    The pressure has been maybe 5-10 psi lower.

    So I just messaged around with it more. I noticed that the noise went away after air was introduced, like cleaning the pump filter basket and it seems to have gone away after disconnecting the kreeppy krauly and re-priming the pump..I still hear and occasional tick here and there though..

    I'll clean out the DE filter grids later today and see if that is of any help since the psi seemed to have gone up a little after it stopped making that noise...

  5. Back To Top    #5
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,983

    Re: Grumbling Hayward Tri-Star pump

    So if I'm understanding cavitation correctly, it's either a clogged suction line or air leakage?
    A clog can cause cavitation but air leaks do not cause cavitation.

    The pressure has been maybe 5-10 psi lower.
    That is a lot and can definitely cause cavitation.

    But when you disconnect the cleaner and open up the skimmer and MD lines, that will reduce suction side head loss, increase filter pressure (because of higher flow rates) and reduce the chance of cavitation.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  6. Back To Top    #6

    Join Date
    Jun 2014
    Location
    Socal
    Posts
    11

    Re: Grumbling Hayward Tri-Star pump

    Cleaned out the filter and it made the noise right after priming...BUT right after I finished adding the last .5lb of DE powder, the sound went away! And then it came back the next cycle...

    PSI is normal now, suction and flow is normal too. Should I stick a drain snake through the pipes?

    I noticed that sometimes it'll go away when I reprime the system. Doesn't matter what speed I run the pump at as well, if it's there, it's always there.

  7. Back To Top    #7
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,983

    Re: Grumbling Hayward Tri-Star pump

    What is the filter pressure at full speed?

    Doesn't matter what speed I run the pump at as well, if it's there, it's always there
    Then it probably is not cavitation. Have you tried disassembling the pump to see if there is anything in the volute?
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  8. Back To Top    #8

    Join Date
    Jun 2014
    Location
    Socal
    Posts
    11

    Re: Grumbling Hayward Tri-Star pump

    Quote Originally Posted by mas985 View Post
    What is the filter pressure at full speed?

    Then it probably is not cavitation. Have you tried disassembling the pump to see if there is anything in the volute?
    31PSI @ 100%. It has always been this high since I moved in here 27 years ago. Same PSI with the old single speed pump. I usually run it at 40-60% and it will be around 15-20 PSI

    There's in only 1 intake. No separate skimmer/vac lines

    Filter is an old stainless steel Purex smbw 2048. Brand new grids were installed 1 year ago.

    I have dissembled the pump it and replaced the ceramic and graphic bearings. I inspected the parts and nothing seemed out of the ordinary. Sound is not coming from the motor.

    Just bought one of these and i'll have a go at it later tonight to try to reverse flow the intake water and see if anything comes out. If not I'll snake the pipe. If that still doesn't work and I'm sure there's no clog, them i'm going to replace the impeller..

  9. Back To Top    #9
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,983

    Re: Grumbling Hayward Tri-Star pump

    Does the gauge go to zero when the pump is off.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  10. Back To Top    #10

    Join Date
    Jun 2014
    Location
    Socal
    Posts
    11

    Re: Grumbling Hayward Tri-Star pump

    Quote Originally Posted by mas985 View Post
    Does the gauge go to zero when the pump is off.
    Yes, is it supposed to?

  11. Back To Top    #11
    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,983

    Re: Grumbling Hayward Tri-Star pump

    Yes but 31 PSI is extremely high.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  12. Back To Top    #12

    Join Date
    Jun 2014
    Location
    Socal
    Posts
    11

    Re: Grumbling Hayward Tri-Star pump

    Quote Originally Posted by mas985 View Post
    Yes but 31 PSI is extremely high.
    So with the kreepy krauly and in line leaf basket installed, it drops down to 20psi @ max, or 10psi and my normal running speed (65%)

    After using the garden hose reverse flow, I noticed the sound almost goes away at above 10psi, once you get under, it's there....

    Shared album - Jeremy Ho - Google Photos

    The noise comes and goes...I was just playing with it and got it to stop by stopping the flow at the skimmer then letting it go and the sound went away. turned the pump on and off and it came back..


    As for the high PSI, could it be because the intake at the skimmer is a 1.5 inch pvc, then changes to 2inch at the pump, then back to 1 inch at the filter before going back into the pool...?


    Thank you for all your help mas985!

Posting Permissions

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