Auxiliary units

Auxiliary units

Compressor

Lubrication

Lubrication oil (A) is contained in the high pressure chamber (B). When the compressor is working, the high pressure in chamber (B) forces oil through calibrated hole (C) to the moving parts inside. Oil mixed with gas (D) is expelled through strip valve (L) to the high pressure chamber. A separator device (E) installed in gas outlet fitting (F) separates the gas from the oil that falls under the force of gravity to the bottom of chamber (B) while the gas emerges from fitting (F). This device minimises the amount of oil entering the system and thus increases thermal efficiency. The compressor is also fitted with two safety valves (H) that discharge any excess pressure in compression chambers (I).

The valves open when the pressure difference between chamber (I) and chamber (B) exceeds 4 bar.

To prevent the oil in the compressor from flowing into the compression chamber or the upper part of the chamber and a possible momentary loss of lubrication to the moving parts, it is essential that the compressor is always positioned with the cover turned up as shown in the figure on page 20 when not installed.