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Oil-free air compressor promises greater efficiencies

19 November 2018

Atlas Copco has introduced a new version of its ZT 90-160 air-cooled oil-free screw air compressor, including re-designed compressor elements that have been adapted to work more energy efficiently. 

Available with fixed or variable speed drive and with or without an integrated dryer, the ZT 90-160 also features a touchscreen monitoring system that enables end users to evaluate, adjust and optimise the pressure and performance of the compressor in real-time.

All components in the compressor element – such as the rotor profiles, inlet and rotor coating – have been re-designed for maximum efficiency and durability. For example, the design and sealing of the venting chamber ensures physical separation between the oil and air circuits, eliminating any possibility of oil entering the compressed air chamber and thus guaranteeing Class 0 oil-free air.

At the core of the compressor, an IP 55 rated high-efficiency motor protects against dust and humidity and guarantees continuous operation in severe ambient temperature conditions. It is supported by an efficient intake air filtration unit, containing a two-stage dust removal system, that minimises intake losses and provides a low pressure drop. The compressor is also equipped with high-efficiency coolers with water separator that have a compact design and ensure a low air approach temperature and low pressure drop. No external air supply is required thanks to the reliable load/unload regulation process.

The compressor contains an integrated NEOS drive that communicates directly with the touchscreen controller. This displays warning indications, maintenance scheduling and provides online visualisation of the machine’s condition.

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