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Shoulda remembered what Jim preaches!

Discussion in 'Irrigation' started by stebs, Jun 2, 2014.

  1. stebs

    stebs LawnSite Senior Member
    Posts: 355

    Had a zone decide to quit partway through its cycle this weekend, so dug into it today. Cleaned up wire connections (usual cause on this site), no dice. Grab meter and check voltage at controller, nada... Assumed bad station module so I replaced it, still no voltage.... Curiosity got to me, pulled station wire and voila, voltage. Went to solenoid and checked resistance, .3 ohm.... Shoulda checked that first! :hammerhead:
     
  2. mitchgo

    mitchgo LawnSite Silver Member
    Posts: 2,758

    I had a leak job today

    Last year the homeowner paid some guy to fix his leak. The guy kept telling the homeowner if I replace this, this will fix the leak. As he keeps replacing items on the system he keeps telling the homeowner this will fix it ! This time it has to! He ends up replacing all 4 valves, the back flow assembly and 75% of the main line.

    I arrived today and found the leak in less then 10 min finding the quick coupler a few feet away from the back flow assembly leaking some.

    Lesson is- check the obvious things first and work on a systematic break down. Part of any diagnosis is not what finding what the issue is, but finding out what it's not. Knowledge is power!
     
  3. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,148

    There is a big difference between a mechanic and a parts changer.
     
  4. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    ..... and between a bird and cow.
     
  5. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,810

    Regardless of the trade, it's a pleasure watching a good mechanic.
    Posted via Mobile Device
     
  6. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,148

    I once had a diesel mechanic tell me a real mechanic can fix anything. Just a matter of figuring out how it is supposed to work.
     
  7. RhettMan

    RhettMan LawnSite Silver Member
    from Texas
    Posts: 2,032

    that is exactly what i told my mother when she discovered that I had disassembled her vacuum cleaner, and neatly laid out all the parts on the floor.

    She was pissed, until I put it back together.
     
  8. 1idejim

    1idejim LawnSite Fanatic
    Posts: 8,810

    And so should jim

    I had a single valve to find at a medical complex this morning. Met with the client at 8:00 and he have me the lowdown on when, where and what was going on.

    We looked at the stressed areas and I got a brief history of the irrigation system, said to the client that if there was continuity I'd prolly have it in short order.

    Well I took my usual pics and measured the resistance of all of the zones and everything was looking good to go. I skipped the TDR tests on all but the target zone (3220') and told the client that even though it seemed like a long run for the stressed location that I'd start tracing the common to begin with.

    I traced that sombuck all the way around the building, finding a valve here and a valve there but they were the target. I then tried a few different techniques, traced the valve wire, did a sweep search. Nothing.

    Long story short, I was tracing the wrong target, no wonder the zone wouldn't come on when I verified the valve. As soon as I caught my mistake I connected in a closed loop and walked right to the valve. Went from champ to chump to chump to champ in a mere couple of hours, what a ride.

    I found my target so without a ton of enthusiasm I can say "winner winner, feathers for dinner".

    I too wish I'd listened to the one eyed guy :hammerhead:
    Posted via Mobile Device

    Btw. Before tracking the correct valve I pinged it with the TDR 330'/165'

    It was about 170' to the valve.
     
  9. Kiril

    Kiril LawnSite Fanatic
    Posts: 18,298

    Well, at least you know where the other valves and wiring is. Hope you mapped it. ;)
     
  10. RhettMan

    RhettMan LawnSite Silver Member
    from Texas
    Posts: 2,032


    Mr. Jim, if I might be obnoxious as usual....

    Why did you not heat up that specific zone's wire, find it only, and collect your feathers?

    Instead of spending time on the other valves, etc. etc.? :)
     

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