First off, I know nothing about Irrigation. I have a commercial customer that I mow for and she has ask me to turn on their system. I know she had it blown out before winter, so what is the normal steps to get it back on? I have played around with the programmer last year just to change the time on my days there. So is there a valve to turn first or what? I know its may seem like a stupid question to you all, but like I said, not my field.....Thanks for any info you can share.