VESDA F-BO-AFE70-3 FAAST Automatic Purging Unit (Freezer Applications)

The Xtralis F-BO-AFE70-3 is the high-flow version of the FAAST Automatic Purging Unit for sub-zero areas such as freezer stores. It blows compressed air through an aspirating smoke detection (ASD) pipe network on a schedule or on demand, preventing dust and dirt from blocking sampling holes and pipework.

Key features

• Compatible with VESDA, ICAM and FAAST aspirating smoke detection systems
• Single built-in solenoid valve releases compressed air into the pipe network, protecting the unit from compressed-air damage
• Patented design with no air resistance (as defined by EN 54-20)
• 6 user-selectable preventative or event-triggered purging programs, with short or long cycles
• Internal clock, or connect an external timer; manual start from an external push-button
• Can start automatically on a fault message from the ASD system (via the fire panel)
• Several units can be networked in master/slave mode
• Commissioned without software tools; multicoloured status LED

Technical specifications

• Part number: F-BO-AFE70-3 (Purging System AFE70-3, high flow and sub-zero temperatures)
• Air delivery: 5,000 l/min
• Operating temperature: -20 °C to +40 °C
• Supply voltage: 21.6–30 VDC
• Current at 24 V: 8 mA normal, 300 mA with solenoid energised
• IP rating: IP20D
• Relative humidity: max. 95% at 40 °C
• Dimensions (HWD): 68 x 204 x 160 mm; weight: approx. 3.2 kg
• Housing colour: grey white, RAL 9002
• Compressed air: max. 0.7 MPa (7.0 bar); recommended minimum 0.2 MPa (2.0 bar)
• Solenoid flow rate: typ. 1,300 l/min at 0.2 MPa up to 3,700 l/min at 0.7 MPa