CentriPro Motors -Submersible pump motor any good

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by Onokai, Jul 14, 2020.

  1. Onokai

    Onokai Member

    Joined:
    Apr 19, 2012
    Location:
    Arcata,Ca
    I am thinking about getting a spare pump and motor for when my 25 year old one fails
    The current model is a Goulds/Franklin combo-I instalkled it 25 yaers ago in a 110 foot well. 3 wire setup

    Our local pump shop got out of residential pump work but still will order and sell parts/pumps ect
    they can get the old combo and build it for twice the cost of this other brand motor.
    I live in the boonies and this combo can be had for twice the cost as a Goulds/CentriPro ordered online
    any thoghts whether these CentiPro motors are good??
    I have not been able to find much out on these motors-I think they are still made in tbe US?
     
  2. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    I prefer Franklin motors. I am still hearing of a few problems with the Centripro and Pentek. But you don't want to put a new motor on the shelf for any length of time. The motor will be low on fluid when you install and it won't last long. You can store a pump end for as long as you want, just not the motor. You either need to figure our how to check and top off the fluid in the motor before installing, or just get an up to date motor when the time comes.
     
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  4. Onokai

    Onokai Member

    Joined:
    Apr 19, 2012
    Location:
    Arcata,Ca
    Can you expalin the fluid in motor? Is this water or oil for bearings or something else? I'm sure motors sit around in warehouses for long periods? why not my garage?I could keep it wet if needed.
     
  5. ballvalve

    ballvalve General Engineering Contractor

    Joined:
    Dec 28, 2009
    Occupation:
    "retired" and still building and troubleshooting
    Location:
    northfork, california
    I have a few 1 hp Franklins, usa made. How would I top off the fluid? Link? Is it in the AIM manual? Don't they self filled if set in the well for some time before starting up? I think you said long ago to store them in water [?]
     
  6. ballvalve

    ballvalve General Engineering Contractor

    Joined:
    Dec 28, 2009
    Occupation:
    "retired" and still building and troubleshooting
    Location:
    northfork, california
    I just bought a spare pump head, I shopped it a lot and this seems to be the best price: https://www.pumpproducts.com/brands...-only/4-well-pump-end-only/16s-sp-series.html I have one in a well over 30 years now with a Franklin motor. I have a few Franklin motors for backup, but if you search this site and others, the motor and pump as a unit are oddly much cheaper than buying seperate components. Here is a nice Myers and they claim the pump is made in Wisconsin: https://www.pumpproducts.com/brands...ump-motor/s-series.html?product_list_limit=48
     
  7. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    It is the motors that sit in the warehouse for too long that show problems. Finding a wet spot in the box shows the motor leaked water over time. But the water can also just evaporate through the Stainless Steel skin and not leave a spot on the box. If the fluid level is even a tiny bit low when the motor is stood up and installed, the top bearing will run dry and not last very long.

    There is a diaphragm in the bottom of the motor to equalize the pressure inside the motor to the same as the outside pressure. There is a small screen at the top of the motor to let a little water in or out as the diaphragm moves. But there is no way to vent the air if the motor was low on fluid when installed. For this reason warehouses try not to store water filled motors for very long. Even above ground motors stored in a warehouse will have someone who is hired to just spin those motors ever couple of weeks to keep the bearings from pitting or sticking. Pumps can be stored for a long time, but not motors.

    I am sure there are other ways, but I have always checked or filled the fluid in a submersible motor from the bottom. Removing the bottom end cap and diaphragm allows water/antifreeze to be added easily. It is very important that there not be even a tiny air bubble in the motor when installed as will cause problems quickly.
     
  8. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Sounds like a container made from a 4 inch PVC/ABS pipe, with a glued cap on the bottom, would make a nice storage container. Fill with what? RV antifreeze for a freezing area? Water with 1/4 teaspoon of bleach to kill initial biologics? Ordinary tap water only?
     
  9. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    A little eco friendly antifreeze and distilled water with no minerals. Sounds like a lot of trouble but might work if you can keep water out of the wires.
     
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