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BFL(T)
Remotely controlled spring return actuator
The spring return actuator BFL(T) is especially designed to operate fire dampers remotely. The BFL(T) variant is intended for fire dampers with smaller dimensions (CR60, CR120, CR2 with ø ≤ 400 mm, CRS60 with ø ≤ 315 mm, CU2 / CU2-15 / CU4 with W+H ≤ 1200 mm or for CU-LT and CU-LT-1s). For Markage FD with H = 200 mm or H = 2200 mm (in combination with BFT motor).
- Locking button
- Plug (ST)
- Access for manual resetting
- Thermo-electric tripping device (T)
Variants
-
BFL24
Spring return actuator BFL 24V -
BFL24-ST
Spring return actuator BFL 24V with plug (ST) -
BFL230
Spring return actuator BFL 230V -
BFLT24
Spring return actuator BFL 24 V with thermo-electric fuse (T) -
BFLT24-ST
Spring return actuator BFL 24 V with thermo-electric fuse (T) and plug (ST) -
BFLT230
Spring return actuator BFL 230 V with thermo-electric fuse (T) -
BFLT230-ST
Spring return actuator BFL 230 V with thermo-electric fuse (T)
Unlocking
-
manual unlocking
place the locking button on “unlock”. (In case of BFLT: 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 BFLT). -
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.
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