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COMPRESSORS


t he bearings and to seal up the clearances, but the oil also takes away the heat of compression. Previously our compressors used a start-up oil p ump but in the new models we have been able t o employ the pressure difference in the system t o force the oil back into the compressor for even l ower pressure difference applications, and we do not need an oil pump for start-up – so no oil pump is required for high stage applications. The oil circuit is simpler and makes for a lower cost compressor package with lower service r equirements.


A nother feature of the compressors is that the s olenoid valves required to modulate the capacity control mechanism are built on to the compressor and not in the oil circuit. Again, the benefit is a simpler, lower cost package unit.


O ur compressors are also able to use the slide v alve for variable volume ratio control when a n inverter drive motor is used for optimising efficiency for different operating conditions. This combination of inverter drive and variable volume ratio provides the highest efficiency possible for all loads and for all operating conditions – significantly reducing running costs.


The New Generation HallScrew compressors have exceptionally long running life – and a long


t ime between services – and these efficiency g ains are all helping to drive down the cost of o wnership in a major way.


HallScrew compressors are used in the most varied of applications, from deep freezing and process cooling to refrigeration in retail,


brewing and petrochemicals. We are delighted to be introducing the latest New Generation HallScrew compressors to provide our existing and future clients with an outstanding new product line-up which we believe will provide real benefits.


Elitech


For all your humidification requirements


www.heronhill.co.uk 31


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