Mandik SEDM-L, Manual

Page: 5 / 59

5
Design with actuating mechanism
Belimo actuators are used for dampers, series BEN, BEE, BE for 230V AC resp. 24 V AC/DC.
After connection to the power supply voltage, the actuator moves the damper blades to the "OPEN" position
or "CLOSED" (according to the corresponding connection, see wiring diagram). If the power supply is
interrupted, the actuator stops at the current position. The signalling of the "OPEN" and "CLOSED" damper
blades positions is ensured by two built-in fixed “potential-free” end- limit switches.
The actuator for operating the damper blades is mounted in an insulated cover/box. It is accessible
after removing the cover lid. The electrical connection of the actuator is made with a non-flammable cable
(or a cable located in the adjoining cable duct), which passes through an opening made in the wall of the
insulated cover/box when installing the damper or when connecting the actuator power cable. The cable
entry must meet a minimum fire resistance of 30 minutes.
Position:
1 Damper housing
2 Blades
3 Silicone blade seal
4 Internal silicone seal
5 Fire-fighting foam tape
6 Blade stop
7 Actuator housing
8 Actuator housing cover
9 Actuator
Belimo modulating actuators, BEN (BEE)-SR series for 24V AC/DC are specially designed for remote control
of fire dampers. The position of the damper blades is adjustable by means of control voltage 0 (2)...10V DC.
The signalling of the "OPEN" and "CLOSED" damper blades positions is ensured by two built-in fixed
“potential-free” limit switches.
The actuator for operating the damper blades is mounted in an insulated cover/box. It is accessible after
removing the cover lid. The electrical connection of the actuator is made with non-flammable cables (or
cables located in the adjoining cable duct), which pass through an opening made in the wall of the insulated
cover when installing the damper or when connecting the power cables of the actuator. The cable entry must
meet a minimum fire resistance of 30 minutes.