After cooling is completed, the exhaust valve (item 6) closes and the holding period follows with subsequent pressure build-up phase. The vacuum pump and the heater are protected by a non-return valve (item 10). Right up to switch over, the drying installation remains in standby mode. After switch over, the exhaust valve (item 5) with the attached silencer (item 4) is opened and the regenerated vessel depressurised down to atmospheric pressure. After this, the blocking flap opens and the regeneration process starts again with changed over adsorbers.
