Roots pumps for solar processing

The RUVAC WH Roots pump series meets vacuum needs of the solar industry with stringent requirements of operating pressure, cycle times, and system uptime. The WH series includes the RUVAC WH 4400 and WH 7000 Roots pumps. They use a hermetically sealed motor and integral liquid cooling technology for a small, robust, energy-efficient system.

The RUVAC WH Roots pump series meets vacuum needs of the solar industry with stringent requirements of operating pressure, cycle times, and system uptime. The WH series includes the RUVAC WH 4400 and WH 7000 Roots pumps. They use a hermetically sealed motor and integral liquid cooling technology for a small, robust, energy-efficient system.

Users can start the pumps at atmospheric pressure with the optional by-pass-line. By eliminating the metal can traditionally used to isolate the motor from the vacuum line, and replacing it with an epoxy-encapsulated enclosure, the RUVAC WH can use a smaller and more efficient motor that operates at a lower temperature. This approach also reduces energy consumption, eliminates shaft seals and their potential for leaks, and provides outstanding performance with corrosive and toxic gases and vapors. Integrated liquid cooling in the gear cover and motor housing halves the amount of heat radiated into the ambient area.

The RUVAC WH line targets vacuum-system requirements of the solar energy industry, metallurgy and furnaces, industrial coating, R&D, and space simulation applications. With an optional frequency converter, the WH7000 can operate up to 9.800m⊃3;/h @ 70Hz, while the WH4400 can operate up to 7.040m⊃3;/h @ 80Hz.

Oerlikon Leybold Vacuum GmbH (SWX: OERL), Cologne, Germany; ph +49 221.347.1261; media.vacuum@oerlikon.com; www.oerlikon.com/leyboldvacuum.

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