Faulty solenoid?

Discussion in 'Irrigation' started by Fine Gardens Landscaping, Mar 9, 2013.

  1. Fine Gardens Landscaping

    Fine Gardens Landscaping LawnSite Member
    Posts: 132

    Sprinklers pop up only partially when turned on via the clock. They pop up fully when turned on via the valve bleed screw. I'm guessing bad solenoid but I want to prepare for other possibilities. Is there other things that could cause this issue?

    Thanks in advance
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  2. txirrigation

    txirrigation LawnSite Senior Member
    from Texas
    Posts: 977

    Ohm the solenoid, and check for voltage.
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  3. Sprinkus

    Sprinkus LawnSite Silver Member
    Posts: 2,100

    Sounds like the diaphragm or a clogged solenoid discharge port.
     
  4. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,922

    Pull the field wires at the valve and check for voltage, I have a feeling it's either a bad connection at the clock or a shorted field wire.
     
  5. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,412

    the smart money is on the blinker fluid :p
     
  6. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,340

    E/R=I

    Other than that it's prolly hydraulic.
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  7. muddywater

    muddywater LawnSite Bronze Member
    Posts: 1,813

    Like others I would want to know the output of voltage at the clock and at the valve. If it is 24+ at both ends that would say it is not an electrical output problem. If the solenoid doesn't ohm 24+, it might be a bad diaphram. It seems to me solenoids ohm out differently. Rainbirds tend to be 50ish and Hunters 20ish. If it ohmed out ok, I would replace diaphram.

    If it is a hydraulic system, your gonna need to contact Jim!
     
  8. muddywater

    muddywater LawnSite Bronze Member
    Posts: 1,813

    What does E/R=I mean for the ignorant on this forum(me)?
     
  9. muddywater

    muddywater LawnSite Bronze Member
    Posts: 1,813

    Also, good this is what irrigation flags second life are for.
     
  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,412

    baby steps :) Ohm's Law
     

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