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Cootski

Starting Member

1

Monday, May 22nd 2017, 11:15pm

Orbit 57880 - Unable to run multiple zones concurrently

Hey there forums!

I am posting because I recently purchased a home with an Orbit 4 station timer and underground system. My issue is that I am unable to get all zones to run concurrently - either by timer or manually. When I set it up manually, I'm able to run each zone by itself (not all of them together).

Likewise, when I have all of the station timers set to the same time I am unable to get all four zones running concurrently. Actually - I'm unable to get anything but zone 1 running when it's set to automatic. (Meaning that the only way zones 2 - 4 run is if I do them by themselves, manually).

Very frustrated and I can't seem to figure out why it's operating this way. Any and all help would be appreciated.

Thanks!

mrfixit

Moderator

Posts: 2,297

Location: USA

2

Tuesday, May 23rd 2017, 4:13am

No timer I've ever seen will do what you're asking. Why do you want to run all four valves at the same time?
You could try hooking all 4 wires together and see if it shorts out the timer.
I've seen people run 3 at once that way. I don't recommend it though.
You could probably run 2 and 2 with no problem.
If you program all the zones to run at the same time they'll run in sequence one at a time.

BackflowInspector

Supreme Member

Posts: 482

Location: Houston, Texas

3

Tuesday, May 23rd 2017, 11:03am

Wow,
The zones are designed to operate with in hydraulic parameters. Its simple math.
Your water source could not handle all 4 zones operating at the same time.
That is a simple explanation of why they broke the total area covered into 4 zones.
If you think about it, If it could have been done in 1 zone (Why would they have done it in 4 zones)?

They did it in 4 zones because they had to. Due to the math involved.

If your meter allow 15 gallons at a given pressure of 60 PSI, Zone 1 is probably 10 to 12 GPM.
Lets add zone 1 GPM with Zone 2 GPM, now we are at 20GPM.
We have now exceed the supply source.

Does this make sense.

Sure I made some assumptions and your situation may be a little bit different, Excuse me for that.

But the concept is the same.

What is the issue with running the zones sequentially anyway?
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LI0006121, BPAT0011021, CI0009500

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