Edwards Vacuum A37333940 E2M28 Two Stage Rotary Vane Pump, Oil-Sealed, 380/400V 50HZ or 230/460V 60HZ, three phase
Medium EM series pumps are rugged mechanical oil-sealed pumps with speeds of 18and 28 m3/hr. Compact and quiet, they feature advanced lubrication circuits, high reliability, and accessories to suit specific application needs.
|Displacement (swept volume)|
|50 Hz||32.2 m3h-1 / 19 ft3min-1|
|60 Hz||38.9 m3h-1 / 22.3 ft3min-1|
|Speed (Pneurop 6602)|
|50 Hz||27.5 m3h-1 / 16.2 ft3min-1|
|60Hz||33.0 m3h-1 / 19.5 ft3min-1|
|Ultimate vacuum (total pressure)|
|without gas ballast||1 x 10-3 mbar / 7.5 x 10-4 Torr|
|with gas ballast||1.5 x 10-2 mbar / 1.1 x 10-2 Torr|
|with Fomblin®||1 x 10-2 mbar / 7.5 x 10-3 Torr|
|Inlet connection||NW25 flange|
|Outlet connection**||Nozzle 15 mm external Ø removable from 3/4 in BSP tapped hole|
|Max allowed pressure at outlet||0.5 bar gauge / 7 psig|
|Max inlet pressure for water vapour||30 mbar / 23 Torr|
|Max water vapour pumping rate||0.7 kg h-1|
|Operating temperature range||13 – 40 °C|
|Nominal rotation speed||1440 / 1720 rpm|
|Motor power 50 Hz||0.75 kW|
|Motor power 60 Hz||0.90 kW|
|Power Connector 1-ph*||IEC EN60320 C19|
|Weight||44 kg / 97 lbs|
|Noise||57 dB(A) @ 50 Hz|
|Oil capacity - max||1.5 litre|
|Oil capacity - min||1.2 litre|
|Recommended oil (supplied)||Ultragrade 19|
* Pumps listed with IEC connector only
** The FX are supplied with NW25 outlet connection
Features and Benefits
Thermal overload device prevents overheating (single phase only).
The drive is provided through a flexible coupling by a single‑phase or three‑phase (four pole) motor.
The motors are totally enclosed and are cooled by the motor cooling fan.
Full height O ring sealed oil sight glass for easy checking of oil level and condition.
Large sight glass and operating oil range.
IE3 energy efficient 3 phase motor used with E2M28
Each EM pump is supplied with 1 litre of Ultragrade 19 oil, O ring and centering ring, two Allen keys and spares seal for oil drain and filter plugs. For PFPE prepared FX pumps Fomblin® to be ordered separately.
An oil pressure system lubricates the pump shaft bearing surfaces and rotor sealing faces. The pump has an oil distribution valve which prevents discharge of oil to the pump interior (suckback) after the pump stops. The pumping chambers are air-tight, so this arrangement prevents oil suckback unless the gas ballast valve is open.
You can inspect the level and condition of oil in the oil box reservoir through the oil sight-glass. An oil filler-plug is fitted to the top of the oil box. The pump has two oil drain-plugs to allow either gravity oil drain or pressure oil drain.
- Analytical instruments - LCMS
- Beam lines and high energy physics
- Centrifuges, ultra-high speed
- Degassing/curing - oil, epoxy resin
- Freeze drying
- Gas bottle filling/emptying
- Gel drying
- Glove boxes, ovens
- Laboratory bench top vacuum
- Lasers, gas recovery and re-circulation
- Leak detectors, Helium
- Load locks and transfer chambers
- Refrigeration manufacture
- Rotary, centrifugal evaporators
- Solvent recovery
- Surface science instruments
- Turbomolecular backing pumps