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2.2.
Maximum opening according to height of sash
The actuator stroke is in accordance with the height of the sash and its application.
Check that the actuator stroke does not touch the profile of the sash and that the
chain does not exert force on the window frame (Measurements in mm).
A
TTENTION
.
For safety reasons the actuator should not be assembled if
dimensions are inferior to those indicated in the table below. In the event that
the height of the sash should be lower, call on the manufacturer to check the
appliance.
Mode of installation
Selection of actuator stroke
240
360
Light domes, skylights or vertical top hung windows
opening outwards with frontal assembly
400
550
Top hung windows opening outwards with horizontal
assembly
400
550
Bottom hung windows
(motor on frame)
400
550
Bottom hung windows
(motor on sash)
Consult manufacturer
3. Technical information about function
The chain actuator opens and closes the window using a double row steel chain
inside a sheath. Movement is generated using electrical energy that powers a
reduction motor controlled by a functional electrical device.
Windows can be programmed to open and the device allows chain opening at 240 and
360 mm.
When the window returns to start position, that is during closure, the stroke-end
uses an electronic self regulating process with absorption of energy and no
regulation is therefore required.
The actuator is produced by the factory with the stroke-end for return set at around
+1 cm (out by 1 cm). This allows the actuator to be assembled without electrical
energy powering movement and means that the window remains closed after
assembly.
The joint between actuator and support brackets is quick, requires no fixing screws
(
NEKOS
patent) and allows the actuator to rotate to follow the track of the chain even
on shorter windows.
4. Manufacture and applicable standards or regulations
The chain operated
series 253 KATO
actuator has been designed and
manufactured to open and close top hung windows; bottom hung windows;
dormer windows; light domes and skylights. It has been specifically designed for
ventilation and climate control and any other use is prohibited unless previously
authorised by the manufacturer.
