General Information
Application
- Circular EXCONTROL shut-off dampers Type AK-Ex for shutting off or restricting the airflow in ventilation ducts of air conditioning systems
- For use in potentially explosive atmospheres (ATEX)
- Input signal to control shut-off damper blade is to be provided by others
Attachments
- Electronic actuator:
- Auxiliary switch for capturing the end positions
- Pneumatic actuator
Construction features
Special features
- ATEX mark and certification
- ATEX equipment group II, approved for use in zones 1 and 2; electric actuator also for zones 21 and 22
- Circular casing
- Construction and materials comply with the EU directive for use in potentially explosive atmospheres (ATEX)
- Spigot with lip seal, for circular connecting ducts according to EN 1506 or EN 13180Technical data
Nominal sizes
- 5, 6, 8, 10, 12, 16
Construction
- Galvanised sheet steel
- P1: Inner duct powder-coated, silver grey (RAL 7001)
- A2: Inner duct in stainless steel
Parts and characteristics
- Ready-to-install shut-off damper
- Damper blade with blade mechanism
- Connection for equipotential bonding
- Cable bushings suitable for use in potentially explosive atmospheres
- ATEX-compliant actuator is factory assembled and wired
- Nominal sizes: 5 – 16 in
- Acceptable static differential pressure: 6.02 in w.g.
Standards and guidelines
- Directive 94/9/EC: Equipment and protective systems intended for use in potentially explosive atmospheres
- Closed blade air leakage according to EN 1751, class 4 (nominal sizes 5 and 6, class 3)
- Nominal sizes 5 and 6 meet the general requirements, nominal sizes 8 – 16 meet the increased requirements of DIN 1946, part 4, with regard to the acceptable closed blade air leakage
- Casing air leakage according to EN 1751, class CMaintenance
- Maintenance-free, as construction and materials are not subject to wear and tear
