Download Technical datasheet KIT

The spring-return actuator ONE is designed to easily operate Rf-t fire dampers of all sizes, automatically or remotely. Six models are available, 24 or 230 volt, with FDCU or FDCB position switches; and optionally with plug (ST). Unlocking button Blade position indicator LED Battery compartment to reset motor Plug (ST)

VARIANTS

• ONE T 24 FDCU ST
  Spring return actuator ONE 24V (with fusible link) + unipolar beginning- and end-of-range switch and plug (ST)
• ONE T 24 FDCU
  Spring return actuator ONE 24V (with fusible link) + unipolar beginning- and end-of-range switch
• ONE T 230 FDCU ST
  Spring return actuator ONE 230V (with fusible link) + unipolar beginning- and end-of-range switch + plug (ST)
• ONE T 230 FDCU
  Spring return actuator ONE 230V (with fusible link) + unipolar beginning- and end-of-range switch
• ONE T 24 FDCB
  Spring return actuator ONE 24V (with fusible link) + bipolar beginning- and end-of-range switch
• ONE T 230 FDCB
  Spring return actuator ONE 230V (with fusible link) + bipolar beginning- and end-of-range switch

UNLOCKING

• manual unlocking
  shortly press the unlocking button (1) once.
• automatic unlocking
  the fusible link reacts as soon as the temperature in the duct reaches 72°C.
• remote unlocking
  by interrupting the power supply.

RESETTING

• manual resetting
  open the battery compartment (4) and press a 9V battery against the contact springs. Hold this position until the LED (3) emits a continuous light. Check whether the indicator (2) shows that the damper blade is in the open position. Remove the battery, the LED fades away. Close the battery compartment.
• motorised resetting
  switch off the power supply for at least 5 sec. Power the actuator (respect the prescribed voltage) for at least 75 sec. The resetting stops automatically when the end of range is reached (damper open).

Download Technical datasheet KIT

The spring return actuator BFN(T) is especially designed to operate fire dampers remotely. The BFN(T) variant is intended for fire dampers with large dimensions (CRE60, CR2 with ø > 400 mm, CRS60 with ø > 315 mm or CU2, CU2-15, CU4 with B+H > 1200 mm. For Markage FD with H of 400 and 600 mm or with H = 1200 mm (2 pcs) and with H = 2400 mm (in combination with BFT motor). Locking button Plug (ST) Access for manual resetting Thermo-electric tripping device (T)

VARIANTS

• BFN24
  Spring return actuator BFN 24V
• BFN24-ST
  Spring return actuator BFN 24V with plug (ST)
• BFN230
  Spring return actuator BFN 230V
• BFNT24
  Spring return actuator BFN 24 V with thermo-electric fuse (T)
• BFNT24-ST
  Spring return actuator BFN 24 V with thermo-electric fuse (T) and plug (ST)
• BFNT230
  Spring return actuator BFN 230 V with thermo-electric fuse (T)

OPTIONS – SWITCH

• SN2 BFL/BFN
  Auxiliary limit switch ‘open/closed’

UNLOCKING

• manual unlocking
  place the locking button on “unlock”. (In case of BFNT: the damper can alternatively be unlocked by pushing the “test” button on the thermo-electric fuse)
• automatic unlocking
  the thermo-electric fuse reacts as soon as the temperature reaches 72°C (type BFNT).
• remote unlocking
  by interrupting the power supply.

RESETTING

• manual resetting
  turn the enclosed handle anti-clockwise. To block the motor, place the locking button on “lock”
• motorised resetting
  switch off the power supply for at least 10 seconds. Supply the actuator (respect the prescribed voltage) for at least 75 seconds. The resetting stops automatically when the end of range is reached (damper open) – it takes about 60 seconds to reset the damper – or when the power supply is interrupted.