Question about Coleman Powermate Premium Plus 6250W Portable Generator

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Gererator stops producing power

I use my powermate 5000 watt generator weekly and it is about 5 years old. It has been serviced regularly and runs fine mechanicly, but this weekend it quit producing power. It did not trip the breaker so I let it cool down and tried it a gain and it produced power until it warmed up, then it stopped again without tripping the breaker.

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This sounds like a "flying open" in the rotor. Over time a small part of the wire that winds around the rotor has gotten cracked just enough to open up when it's warm and being pulled on by the force of the rotor spinning. To test this further, take the wires off the brushes and connect an ohm meter across them then run the generator, if you see the ohm meter indicate an open circuit you've found the problem. This can be repaired but it means removing the rotor and finding the weak spot in the winding. You could replace the rotor for a couple of hundred dollars or get a new generator.

Regards,
Carl

Posted on Mar 01, 2009

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