Kaeser CSG series rotary screw compressors

Kaeser Australia has released the latest class 0 oil-free compressor, which is suitable for sensitive processes such as pharmaceuticals, food and beverage, health care, chemicals and other specialised engineering applications.

Recently launched in Australia, the CSG.1 rotary screw compressors have air flow rates ranging from 4 to 15 m³/min and pressures up to 11 bar. They are available with a choice of air- or water-cooling, and users can select an optional integrated refrigeration dryer or an i.HOC (heat of compression) dryer.

The range can be specified as a fixed speed, fixed flow rated machine or, for applications with fluctuating compressed air demand, variable speed controlled ‘SFC’ versions are available with IE5 Ultra-Premium Efficiency synchronous reluctance motors.

The risk of potential product contamination by oil from the rotary screw compressor is evaluated and minimised by means of an HACCP (Hazard Analysis Critical Control Point) analysis. Process validation is made easier for the user, as KAESER’s diligence is confirmed by the TÜV Rheinland in the form of a residual oil class 0 certificate in accordance with ISO 8573-1.

The range has also been certified according to ISO 22000:2018, which covers the manufacture of food and beverage equipment. To further formalise the supply chain’s integrity, users can also option the CSG.1 with Pharmaceutical, Food or Engineering Industry Certification Packages. Additionally, users can request certification that the machine is free of silicone contamination, as per VW PV 3.10.7.

Kaeser’s patented, energy-efficient Sigma Profile rotors now feature a wear-resistant PEEK coating, which results in an airend that will exhibit no air flow loss during its lifetime. Developed in-house, the special coating has three layers: nanoceramic, PEEK basecoat and topcoat. This coating is biocompatible, FDA-certified and compliant with European requirement VO 1935 for food contact materials, making it suitable for use in the food and pharmaceutical industries.