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ATTENTION
With bottom hung windows injury could be caused if the window accidentally
falls. An appropriately sized flexible link arm or fall prevention safety system
designed to resist a force equal to at least three times the total weight of the
window MUST be installed.
Danger of crushing or dragging. During function, when the actuator closes the
window, a force of 550N is exerted on the bead of the frame, enough to crush
fingers in the event of distraction.
In the event of breakage or malfunction, switch the appliance off at the
general switch and call for the services of a qualified technician.
2. Formulas and recommendations for installation
2.1. Calculation of opening / closure force
Using the formulas on this page, approximate calculations can be made for the force
required to open or close the window considering all the factors that determine the
calculation.
Symbols used for the calculation
F (Kg) = Force for opening or closing
P (Kg) = Weight of the window (mobile sash only)
C (cm) = Opening stroke (actuator stroke)
H (cm) = Height of the mobile sash
For horizontal light domes or skylights
F = 0,54 x P
(Eventual weight of snow or wind on the
cupola should be calculated separately).
For vertical windows
TOP HUNG WINDOWS
,
OUTWARD OPENING
(A)
BOTTOM HUNG WINDOWS
(B)
F = 0,54 x P x C : H
(Eventual load of favourable or unfavourable
wind on the sash should be calculated
separately.)
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2.2. Maximum opening in accordance with sash height
The actuator stroke should be selected in accordance with the height of the sash and its
application. Make sure that the actuator does not touch the profile of the sash when
moving along its track, and ensure there are no obstacles blocking the opening and that
the rack moves smoothly along the window frame.
A
TTENTION
. For safety reasons, always check application before fixing the
actuator to the frame or sash. In the event of difficulty, request assistance
from the manufacturer to check application.
3. Technical information about function
The rack actuator performs opening and closing movements for the window using a
round section steel rack. Movement is powered by electricity that feeds a reduction
motor controlled by a functional electronic device.
The opening stroke for the window CANNOT be programmed as it is regulated by
the length of the rod on the reduction motor. The electronic control device allows the
rack to protrude until it encounters an obstacle that blocks its stroke. This could be
provided by the internal lock on the rack or complete closing/opening of the window.
In both outwards and return directions the stroke-end uses a self-defining electronic
process with power absorption, and for this reason, no adjustment is required.
4. Technical data
Model
SKY 450
Thrust and traction force
450 N
Course lengths
180, 230, 350, 550, 750, 1000 mm (*)
Input voltage
110-230V~ (a.c.) 50/60 Hz
Current absorption at nominal load
0,250 A (110V) / 0,160 A (230V)
Travel speed without load
5,5 mm/s
Length of run without load
In accordance with length of truck run
Double electrical insulation
Yes
Type of service
S
2
of 4 min
Max. and min. temperatures for function
-5 +55 ºC
Degree of protection for electrical devices
IP44
Adjustment of socket at casing
Position self regulating
Connection in parallel of two or more motors
Yes
Connection in tandem or in series
Yes
Limit switch stop at opening and closure
At absorption of power
Protection against overload at opening and
closure
At absorption of power
Dimensions
103x47x(Course 135) mm
Weight
Varies according to construction
Information presented in these illustrations is not binding and is also subject to variation without prior notice.
(*) Technical personnel can shorten track runs by adjusting the internal limit switches.
