FIELD: transportation.
SUBSTANCE: device comprises a magnetic valve, wherein the output magnetic valve connection is connected to the control compressor output, a regeneration magnetic valve, which is connected to the output magnetic valve connection, and a drain valve. The output magnetic valve connection is connected to the control pressure input of the drain valve. The vehicle comprises a compressed air preparing device. The method for operating the compressed air preapring device consists in controlling the operation of the drain valve by means of the magnetic valve.
EFFECT: increasing protection of the compressed air preparing device from freezing at low temperatures.
7 cl, 6 dwg
