Oil-free compressors boost capacity at Kolak Snack Foods 10 May 2013

Kolak Snack Foods is reporting success with Atlas Copco oil-free compressors at its busy manufacturing plant in London – recently the subject of a production improvement project to meet increased capacity demand.

Plant engineers replaced the sites existing compressors with oil-free, rotary screw machines – two ZT 90 FF units and a ZT90VSDFF – which together provide a guaranteed supply of high-quality air for food production.

Process air now complies with the ISO 8573-1(2001) standard of air purity, which embraces the Class 0 industry standard, measuring all three forms of oil contamination: aerosol, vapour and liquid.

Atlas Copco was the first compressor manufacturer to achieve the TÜV-certified standard for its zero oil, zero-risk Z-series of stationary compressors.

The 24/7 working shift pattern at Kolak's London plant meant that energy efficiency was also an essential consideration in selecting the compressors, according to Kolak director Rikin Lakhani.

"The Atlas Copco VSD compressor works in tandem with the base load compressors to cover all the main 7 bar plant air application duties, including heat exchanger, steam boiler and packing operations," explains Lakhani.

"This ensures that output is matched to demand in the most energy-efficient way, with the VSD [variable speed drive] compressor taking over any additional site load."

Each of the three new Atlas Copco compressors is a full feature, total installation concept – a pre-wired and pre-piped solution, ready for use 'out of the box'.

Integrating the compressor's IMD dryer and its variable speed drive enables the compact package to supply high quality dry compressed air at the lowest cost.

Brian Tinham

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