Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 9 of 9

Thread: New Pump Motor Help

  1. Back To Top    #1

    Join Date
    Jun 2011
    Location
    Las Vegas, NV
    Posts
    5

    New Pump Motor Help

    Hey All, I currently have a Pentair WF 28 2.0HP Single Speed motor but it is dying and I need a replacement. I know next to nothing about pools and have been reading articles on this forum and from around the web elsewhere. The pool is roughly 9,000 gallons with no water features or spa. It does, however, have solar heating. Should I replace it with the same one? Or opt for say a 2.5HP version? Thanks in advance for all of the help.
    Thanks,

    ABSiNTH

  2. Back To Top    #2
    Smykowski's Avatar
    Join Date
    Sep 2011
    Location
    Gurnee, IL (North Suburban Chi-town)
    Posts
    3,065

    Re: New Pump Motor Help

    Welcome to the forum! What kind of filter do you have and how big is it?
    33' round, 23,000 gal AG vinyl , 1HP 2spd PowerFlo Matrix downsized with 3/4HP impeller (X2), Hayward S180T 150# sand filter (X2), Hayward H250 NG heater Pool Store year 1 - $850 for 2 months; Pool Store year 2 - $440 for 2 months, TFPC year 1 - $170 for 4 months; TFPC year 2 - $95 for 4.5 months
    The most important article on this site - The ABCs of Pool Water Chemistry

  3. Back To Top    #3
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Location
    Lakeland, FL
    Posts
    2,351

    Re: New Pump Motor Help

    Smaller can be better.
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Dolphin Nautilus Plus with CleverClean, Lakeland Florida

  4. Back To Top    #4

    Join Date
    Jun 2011
    Location
    Las Vegas, NV
    Posts
    5

    Re: New Pump Motor Help

    Quote Originally Posted by Smykowski
    Welcome to the forum! What kind of filter do you have and how big is it?
    Thanks! The filter is a 4 filter cartridge type.

    Oh also it has a SWG (Pentair Intellichlor IC20).

    I am also not sure what the electrical situation currently supplied is (115 or 230 volt).
    Thanks,

    ABSiNTH

  5. Back To Top    #5
    linen's Avatar
    Join Date
    Jul 2010
    Location
    Twin Cities, MN
    Posts
    8,649

    Re: New Pump Motor Help

    Welcome to tfp, ABSiNTH

    Definitely do not go bigger, your current pump is already too big.

    What shape is the "wet end"...i.e. the pumping end of the pump?

    One option would be to change out your current motor for a 2-speed of the same size and then you would run on low for most of the time except when you need solar heating. Another choice would be to replace the current motor and pump impeller with a smaller ones. Both of the these options will likely save you electricity, the second more than the first.

    If there is just a singe breaker feeding the pump, then it is probably 115 volt, if there are two breakers feeding the pump, then it is likely 230 volt. We need to know to help select a new motor.

    If you do decide to replace the pump, make sure to go with at least a 2-speed pump and probably no bigger than a 1 hp (we can help you select it).
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  6. Back To Top    #6

    Join Date
    Jun 2011
    Location
    Las Vegas, NV
    Posts
    5

    Re: New Pump Motor Help

    Awesome thanks. The pool builder said that they put a single speed 2HP in there since the water has to be pumped 30-35ft up onto the roof for solar heating. Let me check the breaker situation and get back with you guys.
    Thanks,

    ABSiNTH

  7. Back To Top    #7
    linen's Avatar
    Join Date
    Jul 2010
    Location
    Twin Cities, MN
    Posts
    8,649

    Re: New Pump Motor Help

    That is a high roof, third story? I think a 1 hp whisperflo can do it, but it will depend on the rest of your plumbing.
    TFP Expert who uses Pool School and my TF100 test kit along with PoolMath for my: Round 11K gallon AGP with deep end, 20" sand filter, Matrix 1hp 2spd, 6 2ftX20ft solar panels (and solar cover!), Intex SWCG (copper bars disconnected) and a Rubadub hot tub (chlorine). The SLAM process is not finished until: 1. CC < 0.5 ppm, 2. An OCLT < 1.0 ppm and, 3. The water is crystal clear.

  8. Back To Top    #8

    Join Date
    Jun 2011
    Location
    Las Vegas, NV
    Posts
    5

    Re: New Pump Motor Help

    With the extreme heat/weather in Las Vegas and me running the pump for roughly 7-8hrs/day, will that environment put a lot of added stress on a lower powered motor? I am checking the panel now...
    Thanks,

    ABSiNTH

  9. Back To Top    #9

    Join Date
    Jun 2011
    Location
    Las Vegas, NV
    Posts
    5

    Re: New Pump Motor Help

    Ok, the house's main breaker panel has two breakers teamed up labeled pool so it appears to be 230v.
    Thanks,

    ABSiNTH

Posting Permissions

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