Lindab WH25 - Mechanism Type; Manual and compact manual operation; Blade closing mode; Blade opening mode

OVERVIEW
WH25
LINDAB SAFE
8/50
 Mechanism type
 Manual and compact manual
Manual
Compact manual
1. Manual opening lever
2. Manual closing button
3. Lever position when the blade is open
4. Lever position when the blade is closed
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 exceeds 70°C (or 95°C for the re damper with
95°C thermal fuse).
It is possible to close the damper by pressing the indicated
button.
Blade opening mode
The damper must be opened when the ventilation system
if switched o.
It is possible to open the damper blade by rotating the le-
ver anticlockwise.
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
On request, the re damper can be supplied with position
microswitches (S2 optional) that signal the blade position
(open or closed). Refer to the section Electrical connec-
tions p.35 for more details.
Closing by remote control
Not available
Temperature calibration of thermosensitive element for
automatic damper closing
70 °C±7 °C (Standard)
95 °C±9 °C (On request).
CAUTION: The compact mechanism is not interchangeable
with other types of manual mechanism�
 Manual with magnet
1. Manual opening lever
2. Manual closing button
3. Lever position when the blade is open
4. Lever position when the blade is closed
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 exceeds 70°C (or 95°C for the re damper with
95°C thermal fuse).
It is possible to close the damper by pressing the indicated
button.
It is possible to remotely close the re damper.
The manual command mechanism with magnet is
equipped with an electromagnet which, in case power is
interrupted (interuption magnet version) or when power
is supplied (input magnet version), comands the closing of
the damper.
Blade opening mode
The damper must be opened when the ventilation system
if switched o.
In case of closed damper by pressing the closing button or
remotely by electromagnet, it is possible to manually open
the re damper blade by rotating the lever antyclockwise.
WH25
LINDAB SAFE
8/50