I had a lawn company come and winterize our irrigation system today, but i'm not fully confident it was done correctly (but then again maybe I don't know any better). I went with a different company this year because the one I went through last year was booked up to December. This only my second year having an irrigation system.
All he did was come to the house, ask me to turn off the ball valve in the basement, unscrew the white end cap, opened 4 zones at once with jumper wires in my box and blew air. Then did the same for the remaining 3 zones.
He didn't touch the outside valves or bleed valves at all. Is this right?
He blew until only air came out, but the contractor last year made the valves diagonal when compete. I can't remember about the bleed valves on the side. Does this make a difference if they were left open? Should I move them to diagonal?
In case you are wondering I only took pictures initially so I could see if this is something I could do myself in years to come and save some money.