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