Hello everyone, I am new here.
I am trying to wire up a bin level control system for my grain cleaner. I have two diaphragm switches, one for low limit and other for high limit. Both switches can be wired NO or NC. This is a 110vac system. I want the low limit switch to start the motor and the high limit to shut it off. I know I need some sort of relay in between to keep motor running once low limit is covered but do not know what kind. Any help and possibly a schematic would be greatly appreciated. Thank you

 

I would use a DPDT 110vac relay and wire one side of the coil through the low limit switch NO contact to the Neutral of the 110vac. Connect one of the NO relay contacts across the low limit switch and add a manual start switch. Now connect the NC upper limit switch between the Hot side of 110vac and the other side of the relay coil.
SG

 

This sounds like a basic water tank fill function. How do the diaphragms actuate?

Does this page make any sense to you..........

http://www.actsensors.com/custom-sensors/solid-state-relays/mechanical_relay_rm_series.htm

If this page means nothing to you.....you should get some in person help, for proper function and safety.