FEATURE COMPRESSED AIR
QUIETLY EFFICIENT UNIT provides vital test lab air 24/7
machine is part of the GA 7-15 kW VSD+ oil-injected, rotary screw compressor range, a concept that has turned the industry on its head by redesigning the conventional layout of a typical air compressor. Instead of the normal horizontal arrangement the compressor has an upright, vertical, low footprint layout designed to save floor and work space while improving maintenance access even when the unit is placed against a wall. Significantly, the design offers exceptional energy savings. Atlas Copco’s GA Variable Speed Drive (VSD) technology automatically adjusts the motor speed to match the compressed air supply to demand. When combined with the in-house
Atlas Copco’s energy-efficient GA VSD+ compressor is providing vital 24/7 test lab air for a customer’s R&D operations
A
s a long-term customer Stannah Stairlifts was invited to trial a GA11
VSD+ rotary screw compressor powered by Atlas Copco’s in-house designed interior permanent magnet motor (iPM). Atlas Copco supplies compressed air at four manufacturing and maintenance sites for use in production line assembly air tools, machine tool equipment and workshop applications. The specific requirement of the new
compressor was to provide quality air for the R&D laboratory test rig actuator valves, jigs and fixtures involved in product simulation testing at the Stannah Stairlifts site in Andover where model prototypes are continually put through their paces 24/7.
“This essential air supply was originally
provided by a fixed-speed GA15 unit but when, as part of its Total Responsibility programme for the company Atlas Copco recommended the advantages of a VSD, full-feature upgrade and an opportunity to trial their latest development we had no hesitation in accepting their advice to replace the original machine with their GA11VSD+ FF model,” explains maintenance manager Austen Kirby.
IMPRESSIVE ENERGY SAVINGS The compressor’s performance during the trial period and its impressive energy savings potential persuaded Stannah Stairlifts to install it as a permanent addition to the air supply plant. The
design of the iPM permanent magnet motor which corresponds to IE4 requirements and the more efficient fan motor, this results in an average energy saving of 50% and average reduction of 37% in lifecycle cost compared to a conventional fixed-speed compressor. Furthermore, thanks to the silent motor
and fully-enclosed drive train the compressor runs as quietly as 62 dB(A) Stannah Stairlifts’ compressor installation is making a significant contribution to the high manufacturing standards of the company which in 2011 produced its 500,000th stairlift. “All of our products are manufactured
in the UK and quality assured to ISO 9001,” concludes Kirby. “We are previous recipient of the Best UK Manufacturing and Engineering Factory award from the DTI. Continuing to maintain such high standards means investing in the best production equipment; that’s why we always opt for Atlas Copco’s machines.”
Atlas Copco T: 0800 181085
www.atlascopco.com Enter 329
ROTARY SCREWS DELIVER MORE COMPRESSED AIR PLUS MORE SAVINGS
Compact and refined, HPC KAESER’s new generation ASK Series Rotary Screw Compressors re said to not only deliver more compressed air with more savings but impress with their user-and service-friendly design. Thanks to further refined Sigma Profile airends, an innovative cooling
concept and high efficiency IE3 motors, these air compressors are said to perform up to 20% better than many comparable products on the market. ASK models are available for free air deliveries from 0.79 to 4.65 m3/min (27.9 to 164 c/m) and feature optional frequency control and/or an integrated refrigerant dryer. The integrated Sigma Control 2 controller
26 MAY 2014 | FACTORY EQUIPMENT
provides efficient and intuitive control while the energy-saving IE3 motors and radial fan (with its own dedicated motor) keep costs for energy use to a minimum. Furthermore, the models feature a logical, user-friendly design which
allows all maintenance parts to be conveniently accessed from one side for easy servicing. When closed the enclosure with its sound-dampening insulation ensures quiet and unobtrusive operation.
HPC
www.hpccompressors.co.uk Enter 330 / FACTORYEQUIPMENT
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