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The coil on a contactor burned up so another person removed all of the wires from it and I am not sure where they go back. There is an oil pressure switch and an air pressure switch. It is 480 volts three phase. The schematic is not helpful in showing where to put the control wires. There is a normally open relay on the side of the contactor. I know that 2 and 4 need to be jumped but I do not know where the others go.
And got the following answer:
The oil pressure switch and the air pressure switch should start and stop the motor relay. The control relay is fail safe NO. So have those switches control the relay. Hard to explain without knowing exact parts and control voltages. Is control voltage fed from a 480v transformer in the motor starter? Is it 120 vac controls? Is it a motor starter with aux contactors or an discrete relay?
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