Wiring a square D class 9016 GAW-21 vacuum switch to control my 240V vacuum pump
I am confused as to how to wire my vacuum pump to this vacuum switch. The pump is 240 V single phase and I need it to come on at about 22 inches of mercury and shut off at about 28 inches of mercury. I have two line leads coming from the pump that need to be switched. I don't understand the diagram (first picture) that covers the connection terminals. I think if I can get it wired properly I can set the on/off points using my vacuum gauge and trial/error. Can anyone help me with this?