16" pgp rotor

Discussion in 'Irrigation' started by duckworth, Aug 23, 2012.

  1. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,076

    Haven't heard a peep from Mitch in weeks. Mention porn or fires and SHAZAM he appears from thin air
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  2. mitchgo

    mitchgo LawnSite Silver Member
    Posts: 2,768

    haha

    Yeah there hasn't been too much to comment on LS lately.

    However. I did learn the other day that with a nicked wire and the zone showing 600k ohms I could still locate the valve with the positive on the zone wire and ground on the common.
     
  3. irritation

    irritation LawnSite Gold Member
    Posts: 3,192

    Yea, and it shouldn't be a problem locating all the other valves on that common.
     
  4. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,768

     
  5. mitchgo

    mitchgo LawnSite Silver Member
    Posts: 2,768

    Tools : Remote, Greenlee multimeter, Wire stripper, Station master, 521 locator.
    Needed: Fault locator and that TDR would have been handy too!!

    hmmm- it was the last thing I tried lol. A new water feature install nicked the wire run . I needed my fault locator but I needed to find the dang valve too.

    Zone 11 wasn't working ( 11 zones) > Greenlee multimeter showed 600k ohms.( Broken wire or nicked wire) > Walked around the area of the zone looking for a VB > Located 1 vb of 2 valves but they were not it> Wiring was absolute mess> Traced out zone wire only from controller all the way to this valve box. > Hooked up remote and tested in VB- No useful readings leading into this vb > Disconnected common and zone wire- Traced backwords/ flagged Both wires individually and traced directly back to the controller . > Quickly located a total of 13 valves ( 2 extras wired in the field as well Except my bad zone of course) That were all buried a few inches> Used process of elimination to find vicinity of valve.

    Thought hmmm where the ef is this valve. > Attempted to common and zone wire trace and followed flagged line> Found it. :) . Obviously this wouldn't have worked for a broken wire, but then again I wouldn't have been able to trace the line out to the next VB.

    The wire follows DIRECTLY UP THE MIDDLE of a 15' new water feature that a joe smo installed.

    Used the one spare available wire and then recommended a wire reroute around the feature..

    Total time 1.5H
     
  6. mitchgo

    mitchgo LawnSite Silver Member
    Posts: 2,768

    How come? It just means a broken wire / nicked wire grounding out. It took 600k ohms to return the path back to me which means earth ground was my path of return.
     
  7. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,076

    Using short to earth measurements again Mitch, good man.

    the fault wasn't too severe was it?
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  8. 1idejim

    1idejim LawnSite Fanatic
    Posts: 9,076

    If you would like Mitch, i will let you demo my triplett when it gets home.
    Posted via Mobile Device
     
  9. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,768

    Well done, Mitch, just checking. As I recall, resistance below 700k would indicate a nicked wire making contact with earth.
     
  10. DanaMac

    DanaMac LawnSite Fanatic
    Posts: 13,156

    The porno pop!! I love it, and am stealing that phrase.
    "hey Mrs. Smith, we need to install a new 12" porno pop. Two Actually." :laugh:
     

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