Edwards E2M28 Vacuum Pump

The Edwards type E2M28 vacuum pump comes with an Agilent G3199B sound-damping box and an Edwards oil mist filter type EM20.

The EM range of oil‑sealed rotary pumps – renowned for their high ultimate vacuum, rapid pumping speed, quiet operation and ability to handle vapour – have become the industry standard for laboratory and light industrial applications. The pump is a freestanding unit with the drive provided through a flexible coupling by either a single‑phase or three‑phase (four pole) air cooled motor.

The motor is totally enclosed and is cooled by the motor-cooling fan which directs air along the motor fins. The motors are fitted with a thermal overload device. When the motor is too hot, the thermal overload device switches off the pump. The thermal overload device has an automatic reset; when the motor cools down, the device resets and the motor will restart.

Applications are:

Analytical instruments – LCMS

Automotive

Beam lines and high energy physics

Centrifuges, ultra-high speed

Coating

Cryogenics

Degassing/curing – oil, epoxy resin

Distillation/extraction/filtration

Freeze drying

Furnaces

Gas bottle filling/emptying

Gel drying

Glove boxes, ovens

Laboratory bench top vacuum

Technical specifications:

Voltage: 220-240 V

Displacement (swept volume) at 50 Hz: 32.2 m3h-1

Displacement (swept volume) at 60 Hz: 38.9 m3h-1

Ultimate vacuum (total pressure) without gas ballast: 1 x 10-3 mbar

Ultimate vacuum (total pressure) with gas ballast: 1.5 x 10-2 mbar

Nominal rotation speed               : 1440 / 1720 rpm

Oil capacity – max: 1.5 litre

Oil capacity – min: 1.2 litre

Outer dimensions (W) x (D) x (H):  790 x 305 x 430 mm

Weight:  44 kg