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Winterization Question

Discussion in 'Irrigation' started by DOORZ, Nov 15, 2006.

  1. DOORZ

    DOORZ LawnSite Member
    Messages: 15

    I have a question about winterizing my system. In reading through all of the information about winterizing my system it mentions to start with the furthest zone, and work you way back to the blowout/shutoff. I assume the easiest way to cycle through all of the zones would be to use the controller, and have it set to run each zone for 2 minutes and then move on to the next zone.

    My question is really pertaining to the zones closest to my blowout/shutoff. I have 5 zones (zones 9-13) that are in this area, zone 9 is at the lowest point, and 13 is at the highest point. If I cycle these zones through using the timer the lowest zone will get blown out before the highest zone. Each one of these zones gets progressively higher until it gets to the last zone, which is an elevation change of about 10 feet from low point to high point. Is this going to matter?

    I plan on cycling through the entire system twice, but I wasn’t sure if I would get water running from the higher zones back into the lower zones, or is that not possible due to the entire system being pressurized?

    This is my first year with the sprinkler system, so I am looking for some advice before I do my first winterization.
  2. Mjtrole

    Mjtrole LawnSite Member
    Messages: 226

    what type/size of compressor?
  3. DOORZ

    DOORZ LawnSite Member
    Messages: 15

    A couple of us are going to rent a big towable compressor from the local rental shop.
  4. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Messages: 50,571

    Depending on the rental unit, you might be getting in over your head here. A compressor set to run jackhammers (and not adjustable by the renter) is capable of blowing sprinkler heads right off their pipe connections.
  5. DOORZ

    DOORZ LawnSite Member
    Messages: 15

    The compressor that I am looking at renting is is adjustable, as the other person I am renting this with, has rented this compressor in the past to do his yard in the last couple of years, and has had no issues with blowing their system apart. I know I should me more concerned with CFM than psi, as too high psi will end up breaking parts.

    If I am using the timer to cyle through my zones, I am just not sure if it will matter if blowing out the lower zones before the higher zones will have an impact in winterization. I am not sure if with a compressor with adequate CFM can compensate for the elevation change from higher to lower zones, or if it even matters.

    If it does make a difference, or if it's better to blow out the higher zones before the lower zones assuming I have a compressor with adequate CFM, I could always re-wire my timer at the controller to reverse these zones. I am just not sure if gravity would be working against me in this situation.
  6. irritation

    irritation LawnSite Gold Member
    Messages: 3,591

    It makes no difference, just go through the zones at least twice. The only advantage of blowing the furthest zone first is it makes the others go faster.
  7. Flow Control

    Flow Control LawnSite Bronze Member
    Messages: 1,267

  8. Mad Estonian

    Mad Estonian LawnSite Senior Member
    Messages: 280

    Doesn't your controller allow you to manually operate each valve individually, in whatever order you like? I know it's easier to go the "Manual- all valves" setting, but I prefer to use the single valve manual control and keep an eye on the zones, they don't all take the same amount of time. It does mean more walking, of course (unless maybe you own a Segway).
  9. PurpHaze

    PurpHaze LawnSite Fanatic
    Messages: 5,496

    Or a remote? :)
  10. Mad Estonian

    Mad Estonian LawnSite Senior Member
    Messages: 280

    Or a remote?

    Well now you're getting all fancy and hi-tech on me, might as well be a Buck Rogers-style rocket-propelled backpack...

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