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X3 Milling machine Motor Overheating and tripping house RCD

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lordedmond:
Thanks John

Hoping you would drop by and help out

I was concerned when Chris said it tripped when he touched the machine.

yes a leaky armature will do it bad brush holder to earth would not do it because if memory cell is OK the end bell were plastic , or I would suspect a carbon build up


These little doc jobs are a wee bit small for me after working on 75hp jobs during the year I spent in the winding dept

Stuart

John Rudd:

--- Quote from: Stuart on December 02, 2015, 10:16:15 AM ---Thanks John

Hoping you would drop by and help out

I was concerned when Chris said it tripped when he touched the machine.

yes a leaky armature will do it bad brush holder to earth would not do it because if memory cell is OK the end bell were plastic , or I would suspect a carbon build up


These little doc jobs are a wee bit small for me after working on 75hp jobs during the year I spent in the winding dept

Stuart

--- End quote ---

Not a problem Stuart, but I'm far from your level of expertise..... :zap:

raynerd:
OK, motor removed, turns freely without the belt and with it on. Brushes are fine - making good contact with plenty left - not looking dirty.

I have time later when the kids are in bed but does it look like it is time for a new motor?

£160 from arc eurotrade - two lots of xmas presents and both birthdays in the same month - no chance I can get a motor! If I remove the end cap will that show me anything more...

lordedmond:
Not really without test gear . If you do mark it if you get it back 1 degree out the motor will not run correctly .

before you shell out have you done the test John recommended it's important to isolate the problem .

Have you run the motor off the machine but still connected to the controller . Note if you mix up the two wires the motor will only run the wrong way no other problem

As a side note I did read on this forum or MEM that ARK will test the motor and controller for you for a small fee worth ringing to see how the ground lies

Stuart

John Rudd:

--- Quote from: raynerd on December 02, 2015, 02:09:45 PM --- If I remove the end cap will that show me anything more...

--- End quote ---
A long shot, there might be capacitors, one each connected to each brush and earth( casing )....
Otherwise a photo mught help us....

Chris,
Just read Stuarts post re testing, I can test the controller and motor for the postage costs...but you need to do the light bulb test first....

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