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High-Performance Roots Vacuum Pumps for Low, Medium Vacuum

Powerful and energy-efficient series—compact design, intelligent interface technology

by Pfeiffer Vacuum
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Pfeiffer Vacuum, one of the world's leading providers of vacuum technology, has introduced the new Roots pumps of the HiLobe® series. These compact pumps can be used for numerous industrial vacuum applications such as electron beam welding, vacuum furnaces or freeze drying The pumps of the HiLobe series are of particular interest for fast evacuations (load-lock chambers or leak detection systems). Furthermore, they are suitable for use in coating applications.

Compact and powerful Roots pumps

The compact Roots pumps offer a wide nominal pumping speed range of 520 - 2,100 m3/h. This is made possible through the new drive concept in conjunction with frequency converters. The pumps can be precisely tailored to customer-specific requirements utilizing individual speed control. The new drive concept, permits HiLobe to achieve approximately 20 percent shorter pump-down times than conventional Roots pumps. Rapid evacuation reduces costs and increases the efficiency of the production system.

Process-reliable and cost-efficient vacuum

The maintenance and energy costs of the HiLobe are more than 50% lower compared to conventional Roots pumps. This is due to a drive with energy efficiency class IE4 and the special rotor geometries of the pumps. The pumps are hermetically sealed to the atmosphere and have a maximum integral leakage rate of 1·10-6 Pa m3/s. Dynamic seals are eliminated and, as a result, maintenance is only required every four years. An innovative sealing concept in the suction chamber makes the use of sealing gas superfluous in most applications, which also has a positive effect on the operating costs. Since the operation of the HiLobe Roots pumps is possible even at ambient temperatures of up to over 40°C with flexible air cooling, cost-intensive water cooling is unnecessary.

Control and communication are the essential factors for increasing system availability. The intelligent interface technology of the HiLobe allows very good adaptation and monitoring of the processes. By integrating condition monitoring, information about the condition of the vacuum system is always available. In addition, condition monitoring increases system availability, allowing users to plan maintenance and repair measures in a useful and anticipatory way and prevents cost-intensive production downtimes. These advantages lead to a long service life and maximum operational safety. HiLobe vacuum pumps can either be aligned vertically or horizontally. This allows maximum pumping speed and a more customized and efficient use of space at the customer's production site.

"With the HiLobe Roots pumps our customers are able to reduce energy and operating costs and consequently make production more cost-efficient. For a sustainable reduction of energy consumption and operating costs, it is not enough to solely base it on the energy requirements of a vacuum pump. The type of cooling, the maintenance intervals and the control also have a decisive influence on the overall energy balance. We are proud to be able to offer our customers this holistic approach," says Dr. Ulrich von Hülsen, CTO of Pfeiffer Vacuum Technology AG.