The most challenging clock to program?

Discussion in 'Irrigation' started by Mike Leary, May 13, 2007.

  1. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,775

    In reading Purp's post, he mentioned the Irritrol MC-Plus-A, has there ever
    been a harder clock to work with? I've done Touch Commands, Total Controls,
    Rain Masters...but that MC, made me feel humble!
     
  2. jerryrwm

    jerryrwm LawnSite Bronze Member
    Posts: 1,274

    Remember the old Johns Manville controller with the DIP switches and the little log book attached to the face panel? Griswold had some that were kinda fun too. And don't forget some of those early Superior solid state models.
    The MC+ is right up there with those brain-strainers.
     
  3. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,775

    I'd forgotten about Griswold & I remembered the Weather-Matic mechanical
    with a million knobs!
     
  4. jerryrwm

    jerryrwm LawnSite Bronze Member
    Posts: 1,274

    SSR-10. Helluva clock
     
  5. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,775

    Sure got my attention when I was called in for a service call!
     
  6. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,942

    I remember the JM clock. Its faceplate looked like it was built around a pocket calculator. Batrow had a clock that operated individual mini-relays for each zone. Not surprising for a company whose reputation was made with a clock that toggled a stepping relay.

    Best ever clock (NOT!!!) was an ancient Imperial that actually rotated a set of cams you had to adjust one at a time. One cam on. One cam off. Need to add time to one zone? Move the off cam, and then move all the cams for zones that follow, so runtimes don't overlap. Best of all, the clock was all line voltage, and it was very easy to touch a conductor when adjusting cams.
     
  7. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,775

    I can't remember what year (early eighties?) Griswold seemed like they were
    going to be a player w/sensors, etc....whaat happened to them?
     
  8. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,942

    Griswold still lives, but they don't chase the irrigation market. Ever service their cast-iron-body valves?
     
  9. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,775

    It'd be cool to see who the designers were of those early "changed everything" clocks...Griswold..Hardie/Irritrol..the rest seemed to be
    copycats & still seem to be buying each other's tech. Rain Master still lives!
    Unless they hired the above to make the best of the best.
     
  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 46,942

    Griswold 2000 series diaphragm valves - absolute tanks.

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