Question about Coleman Air Tools & Compressors

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Motor trips breaker

At around 60 lbs. my Coleman Balck Max's motor will speed up and slow down constantly until the motor gets so hot the breaker trips.

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The speed is going below where the starting winding cuts back in. That will wreck the motor in short time! The current will shoot up a factor of at least three when the start winding activates.

Investigate why the load is excessive on the motor. Is the motor undersized or is the compressor have a problem? Low oil and bearings seizing?

Posted on Sep 26, 2009

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As the pressure in the compressor increases...so does the demand on the motor. It sounds like the motor is worn out. It could be the bearings or the windings. You could remove the motor and have it re-built(new bearings and windings) at an electrical shop or try to find a replacement on line. If the motor does not have sealed bearings you could try re-packing them with grease or oil. Most motors now have sealed bearings and when they wear out the motor will need them replaced. Check to see if the motor is still under warranty before having it repaired. Sometimes the motor will have a much longer warranty then the rest of the compressor and you may get the manufacturer to send you a new one.

Posted on Sep 26, 2009

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geno_3245_228.jpg

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