Air compressor motor is overloaded when running together with another same air compressor on one air line

by Abdo
(Zaky)

Two air compressors (Sullair 5500) are connected together on one air line to feed pressure 120 psi.

Notice that there is no check valve on the line or @ compressors outputs.

When running the 2 compressors together one as Master and the other as slave, The slave compressor motor makes overload fault and stopped.

When runnig each one alone separetly , it works well and doesn't make overload.

So. What are precautions which should be taken to run the two air compressors together ???

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Bill says...

Aldo, again, nice photo, but nothing to do with the site or question.

Try putting a one way (check valve) in the outflow lines of both compressors before they join.

See more info about this here.

Cheers,

Bill