Atlas Copco G 2, Инструкция

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Oil system, Full-Feature
Air pressure in the oil separator tank (OT) forces the oil from the tank to compressor element (E)
via oil cooler (Co) and oil filter (OF). Compressed air and oil flow into oil separator/tank (OT)
where most of the oil is separated from the air by centrifugal action. The remaining oil is removed
by oil separator (OS) and returns to the oil circuit via a separate line. The minimum pressure
valve (Vp - see section
Air flow ) ensures a minimal pressure in the tank, required for oil
circulation under all circumstances.
The oil circuit has a thermostatic bypass valve (BV). When the oil temperature is below the set-
point of the valve, the by-pass valve shuts off the oil supply from oil cooler. The by-pass valve
starts opening the supply from cooler (Co) when the oil temperature exceeds the setting of the
valve. The setting of the by-pass valve depends on the model. See section Compressor data. In
the oil separator vessel, there might be formation of condensation, especially if the unit is
oversized, run with load duty cycle or in an environment with high RH. If necessary, the
condensation must be checked and removed on a regular basis through the manual drain valve,
in order to prevent water-related damages on the elements of the oil circuit (see section
Preventive maintenance schedule ).
Instruction book
2920 7199 10 17