Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 6 of 6

Thread: Replacing Pump & Filter and thinking of adding a timer (also, single vs dual speed)

  1. Back To Top    #1

    Replacing Pump & Filter and thinking of adding a timer (also, single vs dual speed)

    Pump motor died at the end of last season. Sand filter also has pressure cracks in the housing (in the 'egg' shaped part) that seep when pump is running. The filter has been leaking since we bought the house 5 years ago but figure it's probably a good idea to just replace everything.


    POOL: Inground 22,000 gallon paisley shaped with 1 skimmer, 1 drain and 4 returns. Pool is approximately 40ft from pump.
    CURRENT PUMP: Hayward Super Pump (Model C48L2N134B1)

    Was thinking of just replacing with same equipment that is there now (as it ran the pool with no problems concerning water flow and filtration).

    Would like to add a timer to run the pool at night and cut off in morning.

    Will probably add a chlorinator a bit down the road as well.

    Was looking at Intertmatic timers, but there are so many I'm not sure which to choose.

    Thanks for any help/advice.
    20K gal, vinyl, 1 1/2 HP pump, 24" sand filter

  2. Back To Top    #2
    Mod Squad zea3's Avatar
    Join Date
    Jul 2009
    Location
    Houston, Texas
    Posts
    9,200

    Re: Replacing Pump & Filter and thinking of adding a timer (also, single vs dual spee

    Sounds like a good plan. I use a very basic plug in timer so I can't help with that one, but I'm sure some of our members with Intermatic timers will be glad to chime in.
    TFP Moderator
    Helpful links: TF Test Kits,TFP Pool School, PoolMath
    Vogue 21' round AG, Pentair 1 hp 2 speed pump, 36 sq ft DE filter, Hayward S180T 150# sand filter, Houston, Texas
    Love TFP? Become a
    TFP Supporter!

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

    Re: Replacing Pump & Filter and thinking of adding a timer (also, single vs dual spee

    You're right, the easy answer is to just replace what you've got. I'd highly recommend going with a 2 speed pump over a single speed. You'll get better filtration and serious energy savings. I'm not good at sizing pumps, though, so I'll let others chime in on that part. Generally speaking, the pumps are paired with filters that are too small, so you can likely downsize a bit - again, wait for other opinions, because I can't back that up with empirical evidence.

    If all you have is a pump and a filter, no heater, water features, etc., you can use a SPST (single pole single throw) timer. Intermatics (or comparable knockoffs) have to be hardwired into the circuit. You can buy the temporary/portable timers, but make sure they're rated high enough for the circuit. If you're looking at adding an SWG down the line, that adds a little complexity to the equation, but not much. (I assume that's what you meant when you said "chlorinator" above.)
    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

  4. Back To Top    #4

    In the Industry
    patrick3229's Avatar
    Join Date
    Feb 2012
    Posts
    245

    Re: Replacing Pump & Filter and thinking of adding a timer (also, single vs dual spee

    Hi dbishop I think staying with your current set would be good especially if it has been working fine for you and the plumbing should be quite easier as the ports should be in the same location.

    Typically you want to turn the pool over in an eight hour time period. For your pool this would be a pump that is outputting roughly 45 gallons per minute. The 1 hp super pump will do about 65 Gpms and the 3/4 will do 45 Gpms.

    You will then want to make sure you pair the pump with a filter which has a flow rating which can handle flow of the pump you select.

    I would highly recommend a dual speed pump as there will be significant energy savings over a single speed pump. If you go with a dual speed pump you will want to go with the T106104r Intermatic timer, this timer has two timeclocks one to power the pump on and off and a second to switch between high and low speeds.


    Thank You
    Patrick
    www.inyopools.com

  5. Back To Top    #5

    Re: Replacing Pump & Filter and thinking of adding a timer (also, single vs dual spee

    Quote Originally Posted by Smykowski View Post
    (I assume that's what you meant when you said "chlorinator" above.)
    Nah, after doing some preliminary research I think I'm going to stick with the BBB method. What I was thinking was adding a liquid chlorinator (or a bleach delivery system, if you will).
    20K gal, vinyl, 1 1/2 HP pump, 24" sand filter

  6. Back To Top    #6
    Mod Squad JVTrain's Avatar
    Join Date
    Feb 2014
    Location
    Central Minnesota
    Posts
    5,079

    Re: Replacing Pump & Filter and thinking of adding a timer (also, single vs dual spee

    I replaced a light switch that was controlling my pump with this: Intermatic T101PCD82

    I had it installed by a certified electrician. They replaced the light switch that controlled the pump with a better one for outdoors with the timer turned on or off by that switch. Required by code. It works great. Just ordered another set of on/off pins for it so I can do 2 cycles per day if I want. I'm not sure if you can hook a two-speed pump up to this particular timer. An electrician should be able to tell you. If they can't, find a better electrician.

    ​Love my timer so far!
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
    40x20 Pool: 32K Gallons * Vinyl * Bleach Chlorination * Hayward S270T Sand Filter * Pentair SuperFlo 1 HP * Teledyne/Laars Heater * AquaVac Tigershark * TF-100 w/ SpeedStir
    Isolated Spa - 345 Gallons

Posting Permissions

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