Running till reach 120psi and the air bleed out?

by Wayne Tran
(puyallup, wa. usa)

I have air compressor the model 47065 it running till reach 120psi and the air bleed out, the motor keep running, what part do I need to fix this problem. Thank you

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Hi Wayne... it would sure help if you had included where the air was bleeding out from?

Not knowing that means that I will refer to what a common air compressor problem with this sort of issue might be.

If the air is bleeding out of your unloader valve of your Central Pneumatic 47065 air compressor while the compressor is running, that suggests to me that either the pressure switch did not trip the unloader to closed while the compressor is running, or, the unloader valve, even after being tripped off, is itself leaking.

If you care to pinpoint the compressor leak I might be able to help further.

Cheers,

Bill

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Nov 14, 2012
air compressure
by: Anonymous

Hi thank you for your responded to my question, yes the air came out under on,off switch, is unloader valve? this is a model 47065
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Hi Wayne... As I noted in the earlier response, if the air is leaking out of the unloader valve "either the pressure switch did not trip the unloader to closed while the compressor is running, or, the unloader valve, even after being tripped off, is itself leaking."

While your compressor is running, the unloader valve is supposed to be shut, so that the compressed air flows down into the tank, and not out the unloader valve to atmosphere.

When the compressor reaches the cut out pressure setting, the compressor motor stops, and the unloader valve then is supposed to open to bleed off air trapped over the piston.

If you have not played with, modified, removed or replaced your compressor unloader valve, then I suspect that it is your unloader valve that is the problem.

B.

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