Product Description
RECONDITIONED Edwards E2M275 208-230/460V, 3-ph, 60Hz
Technical Data
| Displacement | |
| 50Hz | 292 m3h-1 / 172 ft3min-1 |
| 60Hz | 350 m3h-1 / 206 ft3min-1 |
| Speed (Pneurop) | |
| 50Hz | 255 m3h-1 / 150 ft3min-1 |
| 60Hz | 306 m3h-1 / 180 ft3min-1 |
| Number of stages | 2 |
| Ultimate vacuum (total pressure) | |
| Without gas ballast | 1.0 x 10-3 mbar / 7.7 x 10-4 Torr |
| With gas ballast | 5.0 x 10-3 mbar / 3.8 x 10-3 Torr |
| Inlet connection | ISO63 blank flange with seal |
| Outlet connection | ISO40 flange centre tapped |
| Max outlet pressure | 0.5 bar gauge |
| Max inlet pressure for water vapour | 12 mbar / 9 Torr |
| Max water vapour pumping rate | 2.3 kg h-1 / 5.1 lb h-1 |
| Weight | 253 kg / 558 lb |
| Motor protection rating | IP55 |
| Motor power | |
| 50Hz | 7.5 kW / 10 hp |
| 60Hz | 8.5 kW / 11 hp |
| Standard oil capacity | |
| maximum | 28 litre / 29.5 qt |
| minimum | 19 litre / 20 qt |
| Recommended oil | Ultragrade 70 |
| Noise level | 75 dB (A) |
| Water cooling requirement | 2 lmin-1 |
Overview
Edwards E2M275 series two stage oil sealed rotary vane vacuum pumps are renowned for their high ultimate vacuum, rapid pumping speeds, quiet operation and ability to handle water vapour. These direct drive rotary vane pumps are inherently compact and vibration free, and with their finger-proof fan and coupling housings they offer excellent operator protection.
This pump is suitable for most duties and is safe to handle non-flammable gases and vapours within the normal operating parameters of the pump.
Supplied with Ultragrade 70 Oil.
This pump is suitable for most duties and is safe to handle non-flammable gases and vapours within the normal operating parameters of the pump.
Supplied with Ultragrade 70 Oil.
Technology
Reliable system protection devicesEvery pump has protection devices to prevent oil and air suck-back into the vacuum system if the pump stops while under vacuum. A variety of protection devices are used, depending on the pump size and cost, but emphasis is always placed on reliability and simplicity. When you use gas ballast on some of the pumps, you must use a solenoid operated gas ballast control valve to prevent air suck-back.Positive Pressure Oil LubricationThe EM pumps incorporate a well proven positive pressure oil lubrication system which as been developed by Edwards to ensure correct lubrication in all duty modes and particularly to prevent oil starvation with high gas loads.
An integral oil pump ensures that a more than adequate oil flow is pumped throughout the stator/rotor assembly at all times.
This oil lubrication system means that the level of oil in the reservoir is less critical than with other pump designs. All pumps can operate with oil levels as low as 50-70 of the maximum. A full length, easily visible oil level sight glass allows you to conveniently monitor the oil level.
Gas Ballast Facility
The EM pumps have a gas ballast valve. The valve is used to introduce a suitable gas into the stator during the compression stage: this prevents condensation of vapors inside the pump, dilutes and ejects corrosive gases and purges the oil of gases and vapors. Therefore, the use of gas ballast reduces oil degradation and pump corrosion.
Low Noise Levels
The EM pumps maintain Edwards¢Ûªs reputation for quiet operation pumps with a typical noise level of 75 dB(A).
Pumping Systems
The EM pumps, with suitable accessories, can partner a variety of other types of pump in vacuum systems for industry and for research. A special feature of the E2M275S is the central vacuum inlet which enables you to fit a mechanical booster pump with a minimum overhang, to create compact combination pumping systems.
Easy Maintenance
The advanced lubrication system allows the EM pumps to work with wide oil level tolerances, which reduce the need to top-up the oil.
All EM pumps are constructed with internal dowels, which reduce the need for skilled setting of tolerances, when the pump is dismantled. The pumps are designed so that all key components are easily accessible. The exhaust valve seals and oil distributor seals are exposed after the top cover is removed. The shaft seal can be replaced quickly without stripping down the pump.
An integral oil pump ensures that a more than adequate oil flow is pumped throughout the stator/rotor assembly at all times.
This oil lubrication system means that the level of oil in the reservoir is less critical than with other pump designs. All pumps can operate with oil levels as low as 50-70 of the maximum. A full length, easily visible oil level sight glass allows you to conveniently monitor the oil level.
Gas Ballast Facility
The EM pumps have a gas ballast valve. The valve is used to introduce a suitable gas into the stator during the compression stage: this prevents condensation of vapors inside the pump, dilutes and ejects corrosive gases and purges the oil of gases and vapors. Therefore, the use of gas ballast reduces oil degradation and pump corrosion.
Low Noise Levels
The EM pumps maintain Edwards¢Ûªs reputation for quiet operation pumps with a typical noise level of 75 dB(A).
Pumping Systems
The EM pumps, with suitable accessories, can partner a variety of other types of pump in vacuum systems for industry and for research. A special feature of the E2M275S is the central vacuum inlet which enables you to fit a mechanical booster pump with a minimum overhang, to create compact combination pumping systems.
Easy Maintenance
The advanced lubrication system allows the EM pumps to work with wide oil level tolerances, which reduce the need to top-up the oil.
All EM pumps are constructed with internal dowels, which reduce the need for skilled setting of tolerances, when the pump is dismantled. The pumps are designed so that all key components are easily accessible. The exhaust valve seals and oil distributor seals are exposed after the top cover is removed. The shaft seal can be replaced quickly without stripping down the pump.
Applications
-
Vacuum metallurgy processes
-
Thin film coating technologies
-
Pharmaceutical freeze drying
-
Refrigeration and air conditioning system evacuation, drying, and backfilling
-
Transformer and cable drying and impregnation, insulating oil treatment plant
-
Lamp manufacture
-
Cryogenic vessel evacuation
-
Vacuum drying and distillation in chemical industries
-
Semiconductor device manufacture
- Backing pump for high vacuum applications
Edwards Pump Rebuild Process:
Every vacuum pump we sell goes through our comprehensive rebuild process at our location.
- Each pump isfully disassembledand all parts are cleaned and decontaminated with our multi-step process to ensure all contaminants are removed.
- All parts are inspected for wear and replaced as necessary.
- Damaged or worn parts are replaced.
- All O-rings, seals, springs, and gaskets replaced.
- Complete New repair kit installed.
- Motor tested.
- Assembled and tested with multiple flushes of new oil.
Our Rebuilt Pumps comes with a full 1 year warranty for parts and labor.
**Photos are for reference only. Actual product may have slight differences.
