Compressor motor doesn't turn just makes noise

I have a compressor with a capacitor strat single phase elactric motor the name plate is long gone but it might be 1 1/2 or 2 HP. When I plug it in, the motor turns a small amount and then stalls and makes noise. most of the time it doesn't turn just makes noise.

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Be real good if we knew what type of noise it made.

If all other things were working properly before the problem arose, I'd remove the motor and take it to a local electrical motor rebuild shop for testing.

Cheers,

Bill

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the motor isnt running at the rpms its suppost to

by Larry kirkbride
(battle mountain, nevada)

When i turn on compressor it builds air the when i start using it the compressor will not build air fast enough to keep up. The motor is barely turning its like its stuck in low gear.
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Hi Larry...

Compressor make? Motor HP? Age of compressor? New development or ongoing? Power supply issues?

I'd like a bit more information to try and help you figure this out.

Bill

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Triping the switch on motor

Hi bill

iv just picked up a second hand compressor it's a 200lt clark when I first plugged it in ,it ran fine sounded perfect then it cut out around 5 bar

after looking I saw the breaker had popped then I pushed it in and it just sounded like motor was siezed and blow the 13amp fues in plug and just keeps blowing then fues now ,

I popped the top off and I can see the blue wire on compassitor is burnt also the on off switch does not seem to work is it linked? Thanks for ur help paddy

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Paddy, it seems as though your air compressor is pulling too much power on start up and that's tripping out the breaker.

Burnt wires are never a good sign, and obviously indicate overheating, a result of too much power draw.

A mutli-meter can tell you if the power is coming through the ON/OFF switch OK. I doubt if it is the ON/OFF switch that is the problem, as if it were shorted out, the power wouldn't have reached the capacitor and burnt that wire.

That is started the first time and ran fine up to 5 bar and then started having problems suggest to me that it could be a power supply problem (start capacitor is fried) or the motor is wearing out. That is, of course, if there isn't a mechanical issue in the pump that is back loading the motor at 5 bar, and overloading it so that it draws too much power to try and keep going.

I can't tell you that from here Paddy.

Cheers,

Bill

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RPM and HP requirements

by Tommy
(Madisonville, Ky.)

We have a westinghouse 1AYC compressor. What horsepower and rpm are required?

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Tommy, from what I've found on this venerable old pump is that it does run on a 3 HP motor. Sorry, I can't tell you the RPM. I would tend to lean to the slower rather than higher RPM's though.

Anyone else with info on a Westinghouse 1AYC.

Cheers,

Bill

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Oct 10, 2013
1ayc
by: Anonymous

I just did a full inspection and tune-up on my 1940 1ayc. I found out it has a small piston oil pump that sends oil to the bearing and unloaded valve. If you don't keep the RPM above 400-500 rpm, the cyclinder unloaded will stay open on the high pressure side. You will know this by feeling the cylinder. The low pressure will get warm and the height pressure cyclinder will be cool. The high pressure should be hotter.

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