Trox FKRS-EU - Functional Test: Fusible Link Damper; Closing the Damper Blade; Opening the Damper Blade

8 Functional test
General
During operation at normal temperatures, the damper
blade is open. A functional test involves closing the
damper blade and opening it again.
8.1
Fire damper with fusible link
Closing the damper blade
①
①
①
②
Fig. 40: Closing the damper blade
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
 The damper blade is OPEN
1. Grasp the release mechanism ① as shown with
the thumb and middle fingers.
2. Pull the release mechanism towards you with both
fingers.
ð
The damper blade closes and the tab ② on
the handle locks into the CLOSED position.
Opening the damper blade
①
② ③
Fig. 41: Opening the damper blade
Requirement
 The damper blade is CLOSED
1. With your left hand, pull the release mechanism ①
towards you and hold it.
2. With your right hand, grasp the handle ③ as
shown and press down the tab ② with your
thumb.
3. Then turn the handle anti-clockwise to the travel
stop.
4. Release the mechanism.
ð
The handle locks into the OPEN position.
Damper blade position indicator
The position of the damper blade is indicated by the
position of the handle.
Functional test
Fire damper with fusible link
Fire damper Type FKRS-EU52