submersible pump

Discussion in 'Irrigation' started by irg8ric, Sep 4, 2010.

  1. irg8ric

    irg8ric LawnSite Member
    Posts: 29

    First post. I have a customer with:

    240v submersible pump in river
    hunter pump start relay

    I have verified that the psr is functioning. I have verified that I have 240V at the pump.

    The pump kicks on for 30 seconds and then shuts off for several minutes. The pump is constantly repeating the above. Any ideas what might be going on here?
     
  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,941

    How much water covers the pump? Have you taken resistance measurements?
     
  3. irg8ric

    irg8ric LawnSite Member
    Posts: 29

    pump is covered 100%

    I have not taken resistance measurements. What type of readings should i be looking for? Wiring for pump is black, white, and bare copper.
     
  4. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,941

    Not much to see on a two-wire pump, unfortunately. My guess is that an internal trip is taking place, like for overheating.

    Some surface-water installs of submersible pumps use a cradle/enclosure that maximizes the flow of water past the motor. You could kludge something together and see what that does.
     
  5. irg8ric

    irg8ric LawnSite Member
    Posts: 29

    the controller is wired to the same circuit as the pump. wiring for controller is hooked into hot side of psr. would this be causing a problem? the controller is only pulling from one leg of the 240v?
    if internal trip is taking place, should i just replace the pump?
     
  6. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,941

    I would try a makeshift enclosure to force the water flow past the motor. It could be a simple as some four-inch pipe and a cap with a hole cut in it.

    Of course, if you have a spare pump, you would try that first.
     
  7. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,089

    what make pump?

    who installed it?

    normally 220 is wired red and black, sometimes blue and black, white is normally for a neutral wire.

    a franklin sub pump has red,yellow, black and green

    red ~ yellow = 10.7 - 13.6 ohms - start motor

    black ~ yellow = 3.0 - 3.6 ohms - main windings

    http://www.do-it-yourself-pumps.com/franklinelectric-motorspecs-testing.pdf

    the link is for othe single phase pumps

    a little more information would help
     
  8. irg8ric

    irg8ric LawnSite Member
    Posts: 29

    sta-rite model # 05p4e02j-04
    franklin electric model # 2445089003
    1hp .75kw ph1 230v 3450rpm 60hz 8.2amps

    pump was installed by well company.
     
    Last edited: Sep 4, 2010
  9. irg8ric

    irg8ric LawnSite Member
    Posts: 29

    just performed resistance check on 2 wire pump. readings were within accpetable range of chart provided to me by 1idejim.
     
  10. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,089

    i forgot, welcome
     

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