SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

Hello...we just installed an undergound sprinkler system. We are using a Rainbird Timer. Our source of water is a canal via a 1.5 hp pump which puts out around 40 psi's. We want to install a pressure switch that will shut pump off if intake or filters get clogged and the p.s.i. goes down. The problem is - even though the pump holds it's 'prime', the pipes have zero pressure and the low-pressure cut off on pressure switch won't allow pump to run. It only takes from 5 - 10 seconds for our system to get pressurized. I was told that we could bypass the pressure switch for the 5 - 30 seconds with some type of delay timer, so that pump has opportunity to run and put the water pressure well within the perimeters of the press. switch.

Our pump is run by 120v. What type of a delay timer do we need and how do we rig it up? Or...is there some time of "off delay" pressure switch available? THNX!

Quoted from "Wet_Boots"

It might make more sense to upgrade the filtration so that clogging is less frequent.

WHAT??? Obviously you didn't thoroughly read my initial post. Fitration really isn't the only issue....the system doesn't hold enough pressure until after the pump runs for a few seconds - THIS HAS NOTHING DO WITH ANYTHING ELSE. Anyway...I'm not too concerned about the clogging, a bigger concern (which I didn't mention) was that that canal we irrigate out of sometimes fluncuates.



It's full of water most of the time but there are occasions such as an upstream user (farmer) pulling a bunch of water.



This is why I need a pressure switch...I also need some type of delay for the initial start up

ok.......................



anybody else have info on a time delay system?