Electric motor help
Discussion
I'm trying to troubleshoot a 240v ac electric motor which isn't running. It has 4 wires coming out of the casing and a 4mF start capacitor. My DMM doesn't do capacitance but I've got zero resistance between all six combinations of any two of the four wires and infinite resistance between all of them and earth which I believe is how things are meant to be.
What I don't know is what voltage I should be getting between any of the four wires when the motor is trying to start. Can anyone tell me from the wiring diagram on figure 7.2 of the pdf below?
www.rielloburners.co.uk/lumo/upload_documents/riel...
What I don't know is what voltage I should be getting between any of the four wires when the motor is trying to start. Can anyone tell me from the wiring diagram on figure 7.2 of the pdf below?
www.rielloburners.co.uk/lumo/upload_documents/riel...
I was hoping to try starting it by giving it a shove but nothing protrudes to shove on unless I remove a bunch of oil plumbing and a casing to expose the air fan. However I might try that.
As far as voltages go, after advice from another place, I get 240v between terminals 3 and 6, 50v between 3 and 7, the same between 3 and 8 and I can't get to terminal 9 at present without running a wire into the box but I'll try that tomorrow. So to me at least it looks like voltage is getting in there, the motor seems to turn freely so my money is on the start cap.
As far as voltages go, after advice from another place, I get 240v between terminals 3 and 6, 50v between 3 and 7, the same between 3 and 8 and I can't get to terminal 9 at present without running a wire into the box but I'll try that tomorrow. So to me at least it looks like voltage is getting in there, the motor seems to turn freely so my money is on the start cap.
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