3 hp compressor stalls after coming up to pressure

by Bob
(East Wenatchee, WA)

Compressor is Coleman/Powermate 3HP reciprocating.


On initial start, compressor comes up to pressure no problem and motor shuts off.

As soon as pressure drops and motor tries to restart, the motor stalls and trips breaker.

If I let it sit till pressure in tank has fallen significantly, it repeats the same symptoms - starts and comes up to pressure, but stalls when motor tries to restart to keep pressure up.

Unloader valve? ?

Comments for 3 hp compressor stalls after coming up to pressure

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Nov 03, 2015
Compressor stalls
by: Bill

You wrote "unloader valve"?

Maybe have a look at the troubleshooting pages that cover this topic in a number of different ways, and, since you have already identified what might be the problem, the "unloader valve", do you know if yours is working?

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