GX7-11 YD IEC start but stop about 30 s after?

by Richard
(France)

my air compressor atlas copco GX7-11 YD IEC start but stop about 30 s after ?

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Can anyone offer a suggestion for Richard?

Thanks,

Bill

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Atlas Copco GA11 Will not load

by Danny
(SC)

The unloader valve and solenoid seem to be fine but the compressor still will not build pressure
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Danny, this is an enclosed, sohp floor, rotary screw air compressor, isn't it?

I think it's a demand type air compressor that runs continuously, but is only "loaded" when the pressure switch senses the main pressure is below the cut in pressure, and that flags the compressor to start producing air.

That being the case, since it is the pressure switch that tells the compressor to load, it may be that that is the issue.

Too, your compressor is supposed to have a diagnosis module for monitoring,controlling & regulating compressor operation. Is that not giving you any indications?

It is pretty difficult to diagnose something like this without experience with the unit. I invite Atlas Copco compressor users to add to this, if you would.

Cheers,

Bill



Comments for Atlas Copco GA11 Will not load

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Feb 10, 2012
Atlas Copco GX-11
by: Anonymous

I have the exact same problem, GX-11 screw compressor, runs, but the unloader valve will not open,

The valve gets the electric signal to open, can hear it click and verified that current is supplied.

I think the problem is the small air hose to the valve that apparently helps open the valve?
does not have any air pressure on it.

I have 3 of these compressors and have swapped a different valve on it, but still no workie. So not the valve itself.


Oct 08, 2011
Thanks for your help
by: Danny

Bill , I checked the sensor as you suggested and it is good. I did install a new unloader valve yesterday just to be sure. The on screen date shows nothing. We have two of these compressors that i was alternating the use of each month and last month i switched them over and still did not have any air pressure. Do you have anymore ideas?? Thanks for your help, Danny

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Are you saying you are having the same issue with both air compressors? Then, I would think that it is not a compressor issue, but a component in the circuit that is common to both compressors.


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Atlas copco xa90jd blows off PRV.

by kelly
(las vegas nv usa)

Atlas copco compressor xa90jd blows off PRV.

Its building up to much pressure and the relief valve is opening up and its brand new.
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Howdy Kelly.

I think you have a malfunctioning pressure switch, and instead of shutting off your compressor when the pressure reaches normal cut out pressure levels, your compressor won't stop...and that's very dangerous.

Don't use your compressor any more until you take it to the repair depot your compressor store tells you to take it to for warranty repair.

Cheers,

Bill

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