Multi-Stage Roots Type Dry Vacuum Pump Model: RDA-281H
ULVAC
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Six-stage / with Thermostat
Features
- Reach performance equivalent to dry and oil rotary pump.
- It can operate in all pressure zones from atmospheric pressure to reach.
- Strong against water vapor.
- No need for cooling water.
- Supports single phase / three phase power supply with one model.
- Long service life without sliding parts.
Applications
- Analytical equipment.
- Gas recovery system.
- Coating equipment.
- Back pump for TMP.
- Helium leak detector.
- Manufacturing process for semiconductor.
１Specification
| Actual pumping speed | L/min | 280 | |
| Ultimate pressure：F.A close（F.Aopen）※ | Pa | ≦8.0 X 10-2（≦6.0） | |
| Motor | 720W + 10W DC Motor | ||
| Power supplyVoltage | Single phase | V | 100 - 115/200 - 240 |
| Three phase | 200 - 240 | ||
| Full load current | Single phase | A | 10/5 （100 - 115V/200 - 240V） |
| Three phase | 5 （200 - 240V） | ||
| Weight | kg | 38 | |
| nlet flange | KF-25 | ||
| Outlet pipe diameter | KF-25 | ||
| Ambient temperature | ℃ | 5 - 40 | |
| Water capability | g/h | ≦300 | |
| External dimensions | mm | 180（W）X 520（L）X 377（H） RDA-281H | |
| 180（W）X 588（L）X 377（H） RDA-281HA | |||
※：F.A＝Flush. Air
Corresponding certificate／Voltage
| Model | Applicable standard | CEDeclartion of confirmity | 1Φ 100 - 115V |
1Φ 200 - 240V |
3Φ 200 - 240V |
| RDA-281H | － | － | ✓ | ||
| RDA-281HA | cTUVus | ✓ | ✓ | ||
✓：Standard, ○：Option, －：Not Applicable
Caution
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1
|
If the pump evacuates the powder or the product, it might be damaged.
Please use the inlet filter etc. |
|
2
|
Do not evacuate gas which is hazardous to humans or explosive, flammable, or corrosive. If done, it can cause failure by gas, explosion or ignite.
|
|
3
|
It is a pump only in the room.
Please do not set it up in the place, that rain and water splash, and outdoors. |
Dimension drawing
Pumping Speed Curves
