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Operation and Maintenance Manual
– SCD Smoke Dampers
Version 1
Date 04 2018
Page 20 of 81
4.6.
DRIVE SELECTION
In SCD smoke dampers, a basic function of emergency opening in order to extract
smoke is carried out by a pneumatic or electric 24 V actuator.
The function of damper release in order to vent for dampers with a pneumatic drive is
carried out by the 230 V or 24 V electric actuator (for dampers with maximum leaf
dimensions up to 1920 x 2500), double action pneumatic actuator or a second electric
actuator.
The power transmission from the actuator to the damper’s cover is carried out by a
special mechanism, and the cover position is set by a spring lock.
The selection of actuators for individual single leaf damper sizes is presented in
Table 8, and for double leaf damper sizes in Table 9. For intermediate dimensions or other
classification than the one given in Tables 8 and 9, it is possible to approximate actuators
meeting the durability and mechanical criteria.
W [mm]
L [mm]
(hinges)
Type of the electric
actuator, SL550 T(-25)
classification
W [mm]
L [mm]
(hinges)
Type of the electric actuator,
SL550 T(-25) classification
1000
1000
SG26F/25S
1000
1700
SG26M/25A
SG20M/25A
SG40B/25A
SG40B/25A
SG60N/25A
1000
1200
SG26F/25S
SG60F/25S
SG20M/25A
1000
1800
SG40B/25A
SG40B/25A
SG60N/25A
1000
1300
SG26F/25S
SG60F/25S
SG26M/25A
1000
2000
SG40M/25A
SG40B/25A
SG60N/25A
1000
1400
SG26M/25A
1000
2200
SG40M/25A
SG40B/25A
SG60N/25A
1000
1500
SG26M/25A
1000
2300
SG40M/25A
SG40B/25A
SG60N/25A
SG60N/25A
1000
2400
SG60N/25A
SG60F/25S
SG60F/25S
1000
1600
SG26M/25A
1000
2500
SG60F/25S
SG40B/25A
SG80T/25S
SG60N/25A
1100
1100
SG40B/25A
SG60F/25S
1100
2000
SG60N/25A
SG60F/25S
1150
1150
SG40B/25A
1300
2000
SG60N/25A
SG60N/25A
SG80T/25S
SG60F/25S
SG100R/25A