Doosan 10/370, Руководство по эксплуатации и обслуживанию

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Operating Instructions Operating & Maintenance Manual
47
Theory of Operation
The compressed air exits the separator tank through the top cover piping, and can then travel
along one of two paths, selectable via manual valving.
One path allows Standard Operation, which bypasses the IQ System, and delivers air quality
equivalent to a standard oil-flooded portable compressor.If the IQ System is enabled by proper
setting of the selector valve, the compressed air first enters the aftercooler.
The aftercooler is cooled by the incoming compressor package air, which is controlled by
movable louvers mounted on the aftercooler (if equipped with low ambient option). At most
conditions, the louvers are fully open, and maximum aftercooling is available. The compressed
air and condensate (water with a small amount of compressor lubricant) exits the aftercooler
and enters the moisture separator, where most of the condensate is removed.
The compressed air then flows through two stages of filtration, where the aerosol water and
oil is removed down to approximately 0.01 ppm, and all particulates are removed down to 0.01
micron.
At the bottom of the moisture separator and both filters are strainers and constant-bleed
orifices, which are sized to allow the maximum flow of condensate while minimizing
compressed air loss.
The condensate lines are then piped together, and the condensate is injected at a single point
into the engine exhaust piping. The compressed air then travels through the minimum
pressure valve, and out through the service air valve. The air pressure gauge on the
instrument panel indicates the pressure inside the separator tank. A service air pressure
gauge is located inside the front door of the compressor on the filter support.