EOSi - Rotary Screw

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Edwards EOSi

Edwards EOSi range is a new generation range of quiet, oil sealed rotary screw vacuum pumps. With Variable Speed Drive (VSD) technology and intelligent control, the EOSi range delivers impressive on-demand performance capability and optimises energy consumption.

Increased efficiency

Class leading ultimate vacuum level and extended operating pressure range

Improved productivity

Class-leading pumping speed and fast chamber pumpdown performance capability

Intelligent control

Closed loop pressure control and active power management

Low cost of ownership

Automatic performance matched to vacuum demand

Quiet operation

Noise levels approximately half that of comparable technologies

EOSi sizes

Peak pumping speed

Ultimate vacuum

Shaft power

Permissible ambient temperature

Noise level range

Units

m3/h

mbar

kW

°C

dB(A)

EOS 350i

400

0.35

5.5

0 - 46

51-65

EOS 585i

560

0.35

7.5

0 - 46

51-65

EOS 730i

730

0.35

11

0 - 46

51-73

EOS 900i

900

0.35

15

0 - 46

51-76

EOS 1300i

1250

0.35

22

0 - 46

65-75

EOS 1600i

1590

0.35

30

0 - 46

65-79

EOS 1900i

1810

0.35

37

0 - 46

65-80

The highly efficient patented oil separator design extends service intervals and reduces maintenance costs. Temperature management control enables unrivalled water handling capability to provide you with the versatility and flexibility you need for your application.

The EOSi range is available in up to 4 variant options to enable you to select the optimal choice for your application:

Standard: designed to deliver the exact performance to match your demand, at the minimum possible lifecycle cost. Intelligent control enables energy reduction of 50% or more compared with conventional solutions.

Q: designed for cycling applications, where chamber pumpdown time is important. The responsive inverter control and special configuration enables even faster chamber pumpdown with optimal energy efficiency.

W: whilst the standard EOSi pumps are able to reliably pump water vapour loads similar to equivalent rotary vane pumps, the W version is designed to pump significantly higher water vapour loads and can offer superior comparative performance where required on applications such as pipeline drying and freeze drying.

QW: combines the special design configuration of the Q version with the water vapour handling capabilities of the W version.

Product Features

INLET CONTROL VALVE

Provides modulating vacuum control in conjunction with the VSD drive to minimize energy consumption

PUMP MODULE

Highly efficient oil-sealed rotary screw. Outstanding performance. Robust design. Element life is significantly longer than screw compressors and vane pumps

GUARANTEED OIL RETENTION

Longer life because of managed performance means the vacuum pump never overloads the separators. Innovative and patented design retains oil at <3 mg/m3 even when under the greatest load. In conventional fixed speed vacuum pumps overloaded oil separators lead to oil carryover

ENCLOSURE WITH HOT-COOL ZONES

It isolates all heat producing and temperature critical components (oil separator and element) from all other components. As cool running means higher reliability this feature extends the lifetime of electronic components and leads to a longer Mean Time Between Maintenance(MTBM)

ENERGY RECOVERY OPTIONS

Available for larger motor sizes. Helping you to fulfil your energy management and environmental commitments according to  ISO 50001/14001

EASY TO USE, SIMPLE TO MAINTAIN

The top cover of the oil separator has a unique hinge mechanism. It slips the cover to the side allowing the oil separator filter to be changed easily and quickly. A cleverly designed exhaust pipe enables the condensates to be collected in the discharge pipework at the outlet

Documentation & Media

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