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I bought an UGLY old air compressor about a year ago. it was pulled apart and sat for the last year. I brought it home tonight and want to hook it up, but im unsure of how to do it. the motor has 2 wires coming out of it, and the pressure switch has 2 wires coming out of it. the motor is 110 or 220 , but all i have is 110 right now.
Do you know if the motor is wired for 220 or 110 right now? If its 110, just as simple as taking one lead off the motor, and connecting it to one lead on the pressure switch, and taking the other two leads and running them to a plug. That is if its wired up how I think it is.
But if the motor is wired for 220, you will have to open that little cover there on the side, and reconnect the wires for 110, it should have a diagram somewhere on the motor
If it's a three-phase motor you have to have 220,,,
Does the little blue tag give any information? Brand Name, Amps, Input Voltage, RPM's, Max HP, Frame Size, Arm Volts?? The more info you can give us, the better we can help you out!!
Last edited by Snowbunny; Oct 24, 2007 at 01:13 AM.
That's a capacitor start motor so it definitely is single phase. The info on the motor probably just tells frame size, RPM, temperature and service rating etc. Look under the cover where the wires go into the motor and see if there is a schematic for how to wire it.
By the way, how old is that tank? You may want to think about having it pressure tested....
Last edited by Nitramjr; Oct 24, 2007 at 01:07 PM.
If it's a three-phase motor you have to have 220,,,
Does the little blue tag give any information? Brand Name, Amps, Input Voltage, RPM's, Max HP, Frame Size, Arm Volts?? The more info you can give us, the better we can help you out!!
That wiring seems to be a bit thin for 22 amps, plus the highest rated normal sockets are 20 amps, and you wil have to have an electrician come in to instal a 25-30 amp 115v socket.
I'm pretty sure a motor of that size would be wired for 220 though, since it would not really make that much sense to run it on a 25-30 amp 110 line
I couldn't quite see the setup but the two white wires in the picture could just be to the pressure switch. I'd probably guess that this compressor would be hard-wired instead of on a plug.
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