Atlas Copco ZR90-160 VSD+ oil-free air compressor

The ZR90-160 VSD+ is Atlas Copco’s variable speed driven oil-free air compressor.

At the heart of the ZRVSD+ concept, there are two permanent magnet motors driving each compression element stage independently of each other. The motors are completely enclosed and are water-cooled to reduce ventilation requirements while ensuring optimum cooling. Each motor is controlled by the NEOS invertor, which improves the relative speed of each compression stage for the capacity at maximum speed while providing a wide range of turndown even when running at the minimum speed.

The ZRVSD+ offers a 15% improvement over the company’s current range. The FF version adds an integrated absorption dryer to provide high-quality compressed air at a low cost, as the dryer uses waste energy to dry the air. The MDG dryer builds on the MD rotary drum dryers with pressure dewpoint (PDP) of -40°C.

The rotary screw compressor is suitable for industries where it is critical they receive high-quality oil-free air. Certified Class 0 100% oil-free air avoids the risk of contamination to the end product.

With flow capacities ranging from 283 to 452 L/s FAD all with a minimum capacity of just 90 L/s, from five models in the range 90 to 160 kW, there are machines suitable for different requirements.

The VSD+ utilises variable speed drive technology that contributes to energy savings and the protection of the environment.