well pump

I know a lot of you guys are electrically minded. Could someone tell me how to make the connection from this pump relay switch to the pressure switch. ( Standard square D switch ) We have been running this pump full blast for more than 15 years on irrigation ( just using the breaker as an on/off...

I would love some advice: Over the last year or so, our water seems to have had more iron in it. I put it down to a potentially changing aquifer, or variation in the water softener's performance. However, I worry something else may be going on. Our main well pump is a 5 HP, 3 phase...