8.4.2 Spring return actuator BF...
Status indicator
Fig. 122: Thermoelectric release mechanism BAT
1 Push button for functional test
2 Indicator light
The indicator light (2) for the thermoelectric release
mechanism is illuminated when all of the following con-
ditions apply:
Power is being supplied.
The thermal fuses are intact.
The push button is
not being pushed.
Damper blade position indicator
The position of the damper blade is indicated by the
pointer on the actuator
.
Fig. 123: Damper blade position indicator
1 Damper blade is closed
2 Damper blade is open
Closing/opening the damper blade with spring
return actuator
Fig. 124: Functional test (FKR-EU with BF actuator
shown in OPEN position)
CAUTION!
Danger of injury when reaching into the fire damper
while the damper blade is moving. Do not reach into
the fire damper while actuating the release mecha-
nism.
Requirement
Power is being supplied
1. Push the push button (1) and keep it pushed.
ð
This interrupts the power supply
, and the
damper blade closes.
2. Check if the damper blade is CLOSED, check run
time.
3. Release the push button (1).
ð
Power is supplied again, and the damper
blade opens.
4. Check if the damper blade is OPEN, check run
time.
Functional test
Fire damper with spring return actuator > Spring return actuator BF...
Fire damper FKR-EU 145
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