Hi, I am having problems getting a Ingersoll-rand compressor wired up to the power so that the pressure switch works, I know the switch works as you can see it trip when it get to the pressure required, but the problem I have is no-one know where the two black wires that come from the pressure switch go to in the star-delta switch, they must go to the star-delta switch as all the wires go down a flexy armour cover, the machine is 3 phase two stage 60 gal, I have wired it up with the two black wires going nowhere and it runs perfectly but with the two black wires not being connected to some point the pressure switch will not click in to stop it, as I have said you can see and hear it click in as the required pressure is reached but will not stop the compressor, I have tried electricians to on joy, so can anybody help out with this problem.
