| 摘要 |
The control device for a pressure air-operated installation, particularly a pressure air braking installation, comprising essentially a compressor (1), includes a pressure switch (6) which has a piston (11) subjected on one hand to the pressure prevailing in the pressure air installation and on the other hand to the atmospheric pressure and, consequently, takes a predetermined position. When the pressure in an air tank (5) of the installation is lower or higher than a threshold pressure, said piston generates electric, mechanical and/or pneumatic signals which actuate a switching member, for example a magnetic valve (14, 15) or a three-way valve (19). |
