ELRi – the intelligent liquid ring vacuum pump from Edwards Vacuum


Edwards Vacuum has combined its years of comprehensive know-­‐how and innovative technical expertise to develop a revolutionary range of new liquid ring pumps – the ELRi series. Megha Ajmal, Product Manager for Rough Vacuum products commented “Made for applications which are wet, humid as well as corrosive, this product offers a range of features and benefits that will distinguish itself from other competitor pumps in the market. From the ability to optimise processes to save
energy, ELRi complements our range of solutions we offer for the industrial and rough vacuum markets”.

Innovation meets Reliability

The technical features are of central importance in this new development. The stainless steel impeller, endplates, liquid reservoir and heat exchanger makes this pump highly resilient against corrosion and harsh process gases. The internal injection channels reduce the risk of leakage while the horizontal motor flange arrangement saves previous time on maintenance. Use of mechanical seals also ensure reliable operation by preventing leaks as well as extending service intervals. All this state-­‐of-­‐the-­‐art technology in contained a compact noise cancelling study canopy protecting and extending lifetime of the electronic components.

Intelligence calms

The ELRi is equipped with just not one but two VSD. While the main VSD matches the speed of the pump to vacuum level by adjusting its speed, the second VSD regulates the water flow through the
centrifugal pump according to the operating conditions to avoid risks of cavitation. A patented algorithm always maintains a perfect harmony between the two VSD’s ensuring optimal performance.

Lower utility consumption and extended service intervals

The integrated Air logic controller not only enables the monitoring of important features and parameters of the pump but also offers the option of set‐point control.

For further information about Edwards products please visit www.edwardsvacuum.com.

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