motor sounds like dragging

by kellie
(omaha)

I have a 125 psi, 3.5 aircompressor, its almost 2 yrs old and just the last couple days Ive went to use it, the motor will bog down or start to drag, or at least thats what it sounds like.I have changed the oil and have taken very good care of it,Whats the problem?


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Bill says....

Kellie, when does the motor do this? At the same pressure level each time, or does it vary?

Any change in the power supply? Other appliances using same power source or have you started using an extension cord?

Cheers,

Bill

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Sep 12, 2011
chugging or dragging compresser
by: kellie

Bill, i am useing the same plung in in my garage and everything the same. It will do it at any pressure.It stasts out fine and then it starts dragging down then may pick up again then drag down again.

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If this were my compressor, I would first check to ensure that the check valve going into the tank was in good shape, and if it was, and I did not notice any mechanical issues, then I would take the motor to an electrical motor shop for a load test.


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Are you saying that the pressure keeps building until the compressor PRV lets go, or are you saying that the compressor reaches a pressure level that is below the cut out pressure setting, and consequently, the pressure switch can't trip it off?

Bill

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