1 Brief Introduction[edit | edit source]
The pressurized enclosure is one of most multifunctional applicable type of protection. It is based on a first flush operation which removes a potential, ignitable gas mixtures of the local environment from the enclosure. After the flush, the over-pressure will be maintained by adding as much pressurized air as necessary to compensate for the leaks of the enclosure or components. This constant over-pressure status protects against the diffusion of potentially explosive atmospheres. During the flush the internal pressure will be up to 10-12 mbar, in the operation phase it is reduced to 2-3 mbar. Hot spots at single components inside the enclosure are monitored by temperature sensors (optional) and if required turned off. This assures that no unacceptable surface temperature will occur.
2 Hardware Connection[edit | edit source]
File:Air Purge System P+F 6000DV HW Connection 1.jpgFile:Air Purge System P+F 6000DV HW Connection 2.jpgFile:Air Purge System P+F 6000DV HW Connection 3.jpg
3 Step-by-step Commissioning Guide[edit | edit source]
File:Air Purge System P+F 6000DV Panel.jpg
3.1 Basic Configuration[edit | edit source]
After starting the device for the first time, you have to set up a password
Use the Arrow keys to set the password: Push up, left, down, right and Push Start/Set to accept the password.
Take care not to set it wrong or different! Purge Settings
- Units
- Metric
- Volume of Enclosure
- Ask mechanics (Volume of Motor-cases minus the volume of the motors)
- Purge Flow
- 0,14m³/min = 140l/min (follow Data on Ex II 2G Ex px IIA T3 Gb X -Plate )
- Number of Exchanges
- 5
- Vent Flow Control
- One Vent / Two Vent according to installation (Two Vent if there are two EPV-6000-SS)
- Environment
- Gas
- Pressures
- Max Overpressure
- 15mBar
- Low Pressure
- 1.00mBar
- Min Overpressure
- 0.62mBar
- Operation Mode
- FA
- Operation Time
- (Operation Time is calculated by Volume of Enclosure, Purge Flow and Number of Exchanges)
3.2 Digital Output Configuration[edit | edit source]
Output Settings
- Output 1 Function
- Any Alarm
- Output 2 Function
- Low Pressure Alarm
3.3 First Purging[edit | edit source]
- Look if Vent 1 (green LED) and Vent 2 (orange LED) light up if the Main-unit gets energized
- Start up with a closed Enclosure Pressure Valve and turn the Screwdriver in positive direction until the purging proceed start.
If after purging the System show a fault you can open the valve more. (Open the Valve max. five turns into positive direction)
