Fire damper BSK-RPR-EU
Technical documentation
Spring return actuators
Construction subject to change
No return possible
Version: 2021-07-01 | Page 13
SPRING RETURN ACTUATORS
Spring return actuators B10/B11
B10
(BFL24-T-ST SO),
B11
(BFL230-T SO)
Figure 15: BSK-RPR-EU with spring return actuator B10/B11
Connection diagram B10/B11
Figure 16: Connecting diagram B10/B11
Attention!
Safety function is only guaranteed if the actuator has been
connected to the supply voltage in accordance with regula-
tions and unlocked mechanically.
Electric spring return actuator with thermoelectric release de-
vice BAT.
Release temperatures: ambient temperature 72 °C and in-
ternal duct temperature 72 °C.
Operating position (damper "OPEN") and tensioning of the
return spring by applying the supply voltage.
24V actuators with connectors that can be removed on site
if required.
Safety position (damper "CLOSED") through spring force
when supply voltage is interrupted or the temperature
fuses (ambient temperature: 72°C or internal duct temper-
ature: 72°C) respond. Reaction of the thermal fuses inter-
rupts the supply voltage permanently.
Indication of damper end positions by integrated micro-
switches via potential-free changeover contacts (S1 - S3
"CLOSED" indicates "CLOSED" position; S4 - S6 "OPEN" in-
dicates "OPEN" position).
Manual actuation and fixing in any position is possible in
the de-energised state. It is unlocked manually.
On-site function control is possible by means of the control
key of BAT.
Spare parts: Temperature fuse for internal duct tempera-
ture (ZBAT72).
Replacement takes place by unscrewing both screws at the
thermoelectric release device. Remove the thermoelectric
release device from the actuator unit. Remove the internal
duct temperature fuse from the thermoelectric release de-
vice and replace it with a new internal duct temperature
fuse (ZBAT72). Screw the thermo-electrical release device
back onto the actuator unit.
For any other damage etc., the entire "actuator/thermal
release device" must be replaced completely.
Attention:
24 V connection via safety transformer
B10 (BFL24-T-ST SO):
Plug-in version for connection
to the communication and
power supply unit BKN230-24
Parallel connection of further drives is
possible. Observe performance data.
