Compressed air users have always benefited from cost-effective and reliable compressed air production with KAESER’s ASD series rotary screw compressors. Covering free air deliveries from 3.16 to 5.51 m³/min at 7.5 bar, and capable of 15 bar maximum operating pressure, these versatile compressors are the perfect choice for users who require smaller volumes of quality compressed air. At the heart of the every ASD compressor is a high performance rotary screw airend equipped with flow-optimised ‘Sigma Profile’ rotors. The ‘D’ in ASD stands for Direct Drive, which means that the airend and the drive motor are directly coupled and turn at exactly the same speed. The drive power is transmitted from the motor to the airend without the losses incurred by gearing or drive belts. Featuring a radial fan and optimised cooling-air flow, the ASD’s clever cooling system ensures low compressed air outlet temperatures. The fan’s power reserve is sufficient for long lengths of ducting and, as a result, eliminates the need for installation of an additional exhaust fan. Moreover, it consumes less power than a comparable axial fan. In conjunction with exceptional sound insulation, the high performance ventilation system enables low sound levels of only 65 to max. 69 dB (A), depending on model. ASD compressors are also equipped as standard with the PC-based “Sigma Control” internal controller, which brings additional advantages such as increased energy savings, reduced maintenance requirement, enhanced reliability, seamless communication with existing control centres and the ability to connect to KAESER’s Teleservice facility. ASD compressors equipped with a ‘Sigma Control’ system can also be connected to a second machine of the same specification to provide co-ordinated base load operation - a master control system is therefore not required. One of the units assumes the 'Master' role and thereby precisely co-ordinates performance of both compressors to suit specific compressed air demand. It also ensures that both machines are evenly loaded. Furthermore, ASD compressors are optionally available with an integrated refrigeration dryer and / or frequency control module. This versatile modular design therefore allows the compressor system to be precisely tailored to meet the user's exact requirements. Models featuring an integrated compressed air dryer are also equipped with a centrifugal separator and an electronic “Eco Drain” condensate drain as standard. This consequently ensures efficient condensate separation & drainage and further aids effective operation of the downstream refrigeration dryer. Consequently, users who require smaller volumes of compressed air can now benefit from all of the advantages that modern compressed air technology has to offer. | 
