It is a widely used equipment in the textile industry, mainly in the thread yarn processing industry, due to its robustness and working regime to which it is severely subjected. It uses a centrifugal compressor called a turbocharger - its electric drive motor works in a starter system simply in a star-delta connection, so that it can happen that the diffuser blades must be at an angle that allows almost their complete closing to the motor can be started in a relieved start without causing high spikes in the mains supply voltage.
In this type of equipment the expansion device employed is the pilot valve controlled by a float system.
