OVERVIEW
WH25
LINDAB SAFE
9/50
In case of closed damper as a result of the action of the
thermosensitive element, it is possible to manually reopen
the damper by rotating the lever counterclockwise once
the element has been replaced.
Position indication microswitches
It is advisable to install the re damper with position mi-
croswitches (S2 optional) which signal the position of the
blade (open or closed). Refer to the section Electrical con-
nections p.35 for more details.
Closing by remote control
With power supply input or interruption magnet.
Temperature calibration of thermosensitive element for
automatic damper closing
70 °C±7 °C (Standard)
95 °C±9 °C (On request).
Belimo motorized version
1. Manual closing switch
2. Manual opening lever
3. Position indicator
4. Blade locking lever
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element
that automatically closes the blade when the temperature
in the duct or in the room exceeds 72°C (or 95°C for the
95°C version).
To close the damper when the motor is connected, press
the switch on the temperature sensor or cut o the power
supply.
Blade opening mode
The damper must be opened when the ventilation system
if switched o.
To open the damper with the electric motor driven actua-
tor, provide power supply to the motor. Refer to the section
Electrical connections p.35 for further information.
To manually open the damper, use the handle supplied
and carefully rotate clockwise to the 90° indicator. To hold
the damper in open position operate on the lever indicat-
ed in gure.
During the manual opening of the damper, power must
not be supplied to the motor.
Position indication microswitches
The motorized versions are supplied with two microswitch-
es to show the blade's position (open or closed). Refer to
the section Electrical connections p. 35 for further in-
formation.
Closing by remote control
If power to the motor is cut o, the blade will close.
Temperature calibration of thermosensitive element for
automatic damper closing
72 °C±7 °C (Standard)
95 °C±9 °C (On request).
Siemens motorized version
1. Manual closing switch
2. Manual opening lever
3. Screwdriver
4. Position indicator
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element
that automatically closes the blade when the temperature
in the duct or in the room exceeds 72°C (or 95°C for the
95°C version).
To close the damper when the motor is connected, press
the switch on the temperature sensor or cut o the power
supply.
Blade opening mode
The damper must be opened when the ventilation system
if switched o.
To open the damper with the electric motor driven actua-
tor, provide power supply to the motor. Refer to the section
Electrical connections p.35 for further information.
To manually open the damper, use the handle supplied
and carefully rotate counterclockwise to the 90 °C indica-
tor. To hold the damper in open position, rotate the screw
anticlockwise as shown in the picture.
During the manual opening of the damper, power must
not be supplied to the motor.
WH25
9/50
LINDAB SAFE
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