Pre-filtration system for Expo motor purge and pressurization systems
Features
Reduces contaminants in incoming purge air
Increases purge system up-time and service life
Filtration capacities up to 14,000 Nl/min
Parallel filters for continuous running
Stainless steel enclosure construction
To ensure long, trouble-free service, Expo’s purge and pressurization systems require good quality instrument quality compressed air. Our specifications are as follows (In line with: BS ISO 8573-1: 2010):
Particles per m³: 0.5 micron: < 20,00; 0.5 – 1.0 micron: <400; 1.0 – 5.0 micron: < 10
Oil per m³: <0.1mg
Humidity: Dew point at least 10°C below ambient. Never greater than 3°C
In cases where the air supply cannot be guaranteed to continuously meet this specification, Expo recommends the use of an additional in-line filter unit to pre-clean the purge air.
The system comprises a stainless-steel enclosure with two parallel filter lines. Each filter line can be isolated and blown down for maintenance or change-out, while maintaining flow through the other line to ensure 100% purge system and motor uptime.
| Air Inlet | System for Size 5 Motor Purge - 5 - 6 bar (73 to 232 psi) System for Size 7 Motor Purge - 5.2 - 8 bar (75 to 116 psi) |
| Temperature range | Operating temperature range -10°C to +55°C |
| System variants | ASU-0000-008 Size 5 system up to 6,000 Nl/min (212 SCFM) ASU-0000-009 Size 7 system up to 14,000 Nl/min (494 SCFM) |
