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Unit turns on, goes to 40 psi, quits, motor just hums. Unit's 8 yrs old, infrequently used.

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Hi there,

A motor shop would be the one to confirm for sure the motor is gone.

If you have and can use an ohm meter you could do a basic test yourself.
You could try to see if the motor windings are shorted to ground.
Disconnect the motor and with the meter set to the highest ohm setting probe the case of the motor and each of the motor leads in turn.
If you get any reading then the motor windings are shorted to ground.
If not set the meter for a low reading and probe the two motor leads.
Should be in the range of 100 ohms or so. If zero while on a low setting then the motor is shorted.

A simple test that sometimes gives you a clue is to smell the motor end of the pump to see if you can detect a burnt odor.

Good Luck!!
Thanks

Posted on Jun 16, 2009

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