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Interesting Find

Discussion in 'Irrigation' started by 1idejim, Jul 1, 2013.

  1. Stillwater

    Stillwater LawnSite Platinum Member
    Posts: 4,794

    Loose shoe laces ??
    Posted via Mobile Device
     
  2. ReddensLawnCare

    ReddensLawnCare LawnSite Bronze Member
    Posts: 1,652

    3-99, 4-27, 5-13, 6-25, 7-100, 8-100

    Can you explain what these mean. I don't do much irrigation so i am always eager to learn
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  3. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,815

    Sure.

    Station No. followed by the resistance value.

    :) Best of luck!
    Posted via Mobile Device
     
  4. jbell36

    jbell36 LawnSite Bronze Member
    from KANSAS
    Posts: 1,258

    on second thought, it looks like zones 3,7, and 8 have a loose connection...
     
  5. CAPT Stream Rotar

    CAPT Stream Rotar LawnSite Fanatic
    Posts: 5,857

    Any zone with over 60 ohms tell the wiring is faulty. If there are 3 commons all connected in the field my guess with out being there 1 of them must be bad at some point causing the 100+ohms.

    Last week I was working on an old system that thad 128 ohms for the first 4 valves I was working on, turned out that the splice on the old wire was a partial connection.. It was that wire that was corroded and when you spliced it in the nut broke.. Not cutting the entire connection, keeping continuity but just poorly..The splice box @ clock was non waterproof nuts inside an old 600 body duct taped direct buried into ground not a few feet from the indoor clock kept outside..

    poor common connection, did you do a short to earth?
    Thats my guess..
     
  6. mitchgo

    mitchgo LawnSite Silver Member
    Posts: 2,758

    no because the the ohms change drastically when the other commons are connected up.

    This means one of the commons is wired in series through a valve or something.

    I could do this if I saw it lol
     
  7. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,815

    Short to earth indicated that the insulation was good. Above 1900 megohms.
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  8. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    ............ 3
     
  9. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,815

    ............Nope, close maybe?
    Posted via Mobile Device
     
    Last edited: Jul 2, 2013
  10. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    The wire bundles were looped through the VB with the number 3 valve in it, someone cut the wires to hook the valves up, but the feed through wiring was reconnected to the wrong bundle.
     

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