FIELD: machine building.
SUBSTANCE: compressed air preparation device (10), in particular for rail vehicles or trucks, includes compressed air inlet point (12) configured to be connected to air pump (14), compressed air outlet (18) connected by pressure line (16) with compressed air inlet (12) and air dryer (22) installed in pressure line (16). When air blower (14) is off, the air discharge from pressure pipeline (16) is performed upstream air dryer (22) in order to ensure the possibility of starting air supercharger (14) at reduced counter pressure.
EFFECT: compressed air preparation device (10) and improved method of operation of compressed air preparation device provide possibility of air removal from pressure pipeline to ensure possibility of starting air compressor connected to the inlet side with maximum possible counter-pressure absence.
9 cl, 1 dwg
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