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Thread: Pump replacement help

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    Pump replacement help

    I need to replace a pump for my FIL's pool and looking for help.

    Pool stats:
    16x32 in-ground (approx 20k gallons)
    Single return
    Deep end main drain
    single skimmer
    No water features.
    I think 1 1/2" or 2" inch piping but will have to re-check this next time I go over there.

    The existing pump is a 3/4 hp Richardson's E-Z-Flo Pump (115vac).

    The pump motor gets so hot to the touch (can't put hands on it) and eventually shuts down by itself. Then it restarts by itself when cooled. I suspect the motor will fail sooner than later. It's been doing this for about a month now.

    To avoid electrical and plumbing changes, I would like to replace it with exact same pump but can't find it. I assume they are no longer in business as the pool is more than 25 YO and pump has not been replaced (lived a good life). My FIL has no owners manual for the existing pump so I took some pics of the set up and closeups of the motor/pump.

    Can anyone suggest a replacement for this pump that would require the least amount of installation work?

    [attachment=2:s4t6297u]filter.JPG[/attachment:s4t6297u]
    Attached Images Attached Images
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

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    linen's Avatar
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    Re: Pump replacement help

    That looks like it could be a re-badged hayward pump. From the picture of the label with "sp" on it, it looks like nothing else is written? "sp" indicates it is likely a hayward pump.

    The pump model ust1072 tells us it is an uprated 3/4 hp motor, which was used on:Hayward Max Flow, Hayward Super Pump, Hayward Super II, and Hayward Northstar pumps.
    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.

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    bobodaclown's Avatar
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    Lakeland, FL
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    Re: Pump replacement help

    All you need is a replacement motor.
    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

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    Re: Pump replacement help

    Quote Originally Posted by bobodaclown
    All you need is a replacement motor.

    I like this approach. I did a search on AO Smith UST1072 and found this motor for $130

    http://www.poolsupplyworld.com/Century- ... ST1072.htm

    But then I tried to find the o-rings/screws for the Richardson E-Z-Flo Pump and could not find any. I chatted with a guy at the above supply store and he said the pump was too old to match up a set of seals/gaskets. He said the existing ones should be fine, but I would be a little concerned about that on a pump that is 25+ years old. Do you think if i just took the old ones to a pool store that they would be able to match them up with the old pump? Also, what are the odds that the old diffuser and impeller are still good?
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

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    bobodaclown's Avatar
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    Apr 2011
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    Re: Pump replacement help

    Found this info: http://www.pumpwarehouse.com/richardson.html
    Call and ask them they may be able to help, looks like they've got all the parts.

    The impeller and diffuser should be ok. You might be able to inspect them and pull some numbers and do some cross referencing. (Possibly cross reference to a Hayward Super II) Also remember to replace the shaft seal.

    Hope it helps.
    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

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    Re: Pump replacement help

    Quote Originally Posted by bobodaclown
    Found this info: http://www.pumpwarehouse.com/richardson.html
    Call and ask them they may be able to help, looks like they've got all the parts.

    The impeller and diffuser should be ok. You might be able to inspect them and pull some numbers and do some cross referencing. (Possibly cross reference to a Hayward Super II) Also remember to replace the shaft seal.

    Hope it helps.

    Yes, that's a huge help. Thanks!

    I called them and they have exactly what I need. The only thing they asked me to do before ordering was to check the voltage out at the motor. He said those overheating symptoms could also be caused by low voltage (increased current). If there is low voltage (less than 10% of the motor rating of 115v), I need to check the wiring and/or electrical connections. He also asked me to check the air vents on the motor to make sure they are not clogged.

    If those 2 things check out ok, then I'll be ordering a new motor from them.
    TF-100 Test kit, 24,000 gal. free form Vinyl. mybluepool AC-600 SWG, STA-RITE S7MD60 DE filter, 3/4 HP STA-RITE MPRA6D pump, Polaris 280 w/booster, Raypack Propane heater, Looplock mesh cover; All located in New England.

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