We will start our trip through the loop at the same place we will finish: The oil sump. This reservoir is where oil is stored for use in the system. It is usually located in the lower section of a tank-like cylinder.
[pdf] An internal diesel motor powers these portable compressors and they work in a similar way to electric compressors. The air inside the chamber of the tank is pressurized either by rotating impellers or by collapsing the air containment chamber, which will force the air to compress in a smaller space.
[pdf] This test is performed to ensure that there are no leaks in the piping, compressor, or other pressure containing parts of the package. All openings in the completed compressor package are plugged and the unit is pressurized with nitrogen to 350 psig.
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