Atlas Copco Compressors’ new ZS+ range provides a fully integrated, compact ,silenced package designed to reduce energy requirements by up to 40%. The compressor features helicoidal rotors, one with four lobes and the other with six flutes, that turn into each other. The former screw turns 50% faster than the latter. As a result, the intake air is compressed between the rotors and their housing. The intermeshing compression rotors never touch, thanks to precision timing gears that maintain minute clearances between the rotor surfaces.
Wear and tear is eliminated and no lubrication is required in the compression space. Special seals prevent air escaping along the rotor shaft, while separate seals stop oil escaping from the rotor bearings into the compression chamber. The result is 100% oil-free and pulsation-free air.
Unlike belt-driven compressors, ZS+ blowers incorporate a flanged motor housing and gearbox element, offering permanent alignment during transport, installation and operation of the unit.
The ZS+ comes with variable speed drive, controls, canopy, silencer and valves. There are four variants in the 50Hz, 55kW range, operating at pressures from 750 – 1200 mbar with free air delivery from 301 – 420 l/s (650 -890 cfm). The ZS+VSD 55-75kW series comprises three models operating at pressures from 750 – 1200 mbar with FAD from 455 – 590 l/s (964 – 1250 cfm).
Continuous surveillance is a pre-requisite to guarantee maximum process uptime. The ZS+ features an Elektronikon® operating system to provide control, to monitor the overall system performance status, and to increase the blower’s efficiency and reliability. Easily expandable with extra sensors, digital inputs and MODBus, ProfiBus or internet communication functions, the Elektronikon® can be adapted to specific needs to allow continuous communication with the blower. An ES Central Controller can also be used to control multiple ZS+ ’ s including the ZS+ VSD. A combination of advanced oil-free screw technology, plus air inlet filtration to remove 99.9% of particles up to 3μ, guarantees 100% oil-free air delivery to the point of use.
There is no need for a dedicated operator room. Full sound enclosures substantially reduce noise levels to 69dBA. Advanced rotary screw technology minimises vibration added to which a pulsation damper reduces pipework noise, keeping pulsation levels extremely low. The end result is less impact on the surrounding environment, improved operator comfort and better concentration on the job at hand.