4.5.3.1 Air cooled multi-stage Roots pumps
The versions shown in Table 4.14 can be supplied with either a three-phase or a single-phase mains power connection. Irrespective of the mains voltage and frequency, all pumps are equipped with a frequency converter.
| Air cooled multi-stage Roots pump configurations | ||||||
|---|---|---|---|---|---|---|
| Model | Standard version | ”G“ version for corrosive gases | ”CV“ version for condensable media | |||
| Without gas ballast | Manual gas ballast valve | Permanent gas ballast with inlet filter | Manual gas ballast valve | Permanent gas ballast with inlet filter | ||
| ACP 15 | ||||||
| ACP 28 | ||||||
| ACP 40 | ||||||
Table 4.14: Possible configurations of air cooled multi-stage Roots pumps
| Air cooled multi-stage Roots pumps | |||
|---|---|---|---|
| Model | Pumping speed | Ultimate pressure with/without* gas ballast | Applications |
| ACP 15 | 14 m³ · h-1 | 3 · 10-2 hPa | Noncorrosive gases, argon, backing pumps for turbopumps |
| ACP 28 | 27 m³ · h-1 | 3 · 10-2 hPa | |
| ACP 40 | 37 m³ · h-1 | 3 · 10-2 hPa | |
| ACP 15 | 14 m³ · h-1 | 1 · 10-1 hPa* | Standard applications with a humidity > 5% or desorption from chamber walls, regeneration of cryo pumps |
| ACP 28 | 27 m³ · h-1 | 1 · 10-1 hPa* | |
| ACP 40 | 37 m³ · h-1 | 1 · 10-1 hPa* | |
| ACP 15G | 14 m³ · h-1 | 1 · 10-1 hPa* | Load locks and transfer chambers, backing pumps for turbopumps with high incidence of light gases, process gases with low corrosive gas concentration, particle-laden process gases, oxygen and oxidating media |
| ACP 28G | 27 m³ · h-1 | 1 · 10-1 hPa* | |
| ACP 40G | 37 m³ · h-1 | 1 · 10-1 hPa* | |
| ACP 28CV | 27 m³ · h-1 | 2 · 10-1 hPa* | Drying, distillation, applications with vaporizing fluids |
| ACP 40CV | 37 m³ · h-1 | 2 · 10-1 hPa* | |
Table 4.15: Air cooled multi-stage Roots pump performance data
