Oil and smoke comming from intake suction of screw air compressor Renner

Questions & AnswersCategory: GeneralOil and smoke comming from intake suction of screw air compressor Renner
Guest Staff asked 6 months ago

I have a problem with my renner Rs 37 screw air compressor…
The problem is that the oil and smoke comes out from inlet when ever i turn the compressor off after 3 minutes. Kindly help me to fix it out

1 Answers
Cas Staff answered 6 months ago

Hi,

Please check your inlet valve.

The inlet valve controls the loading and unloading of your compressor.

Basically, it opens when compressed air needs to be produced, and closes when the upper pressure limit is reached.

Besides above function, the inlet valve has a built-in check valve mechanism. That means, it’s designed so only air can be sucked it, but when it air flows backwards (from compressor back out through the inlet filter), it closes.

Because at shutdown, the pressure that is built-up inside the compressor tries to escape. The checkvalve mechanism inside the inlet valve prevents the air from flowing back out of the inlet filter.

In your case, it looks like the inlet valve stays open, or closes too slow.

This allows the air to flow backwards and it takes oil and oil vapor with it, which will flow out of the inlet filter.