EN 12046-1-2020 pdf download.perating forces-Test method-Part 1 : Windows.
3 Terms and definitions
For the purposes of this document, the terms and definitions given In EN 12519 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedla: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.orgJobp
3.1
manual operating forces
manual operating forces indicate the force needed to manual operate windows
3.2
linear motion
movement of casement, sash or hardware in a straight line when acted upon by an operating force; also movement through an arc of which the radius is large in proportion to the length of the arc
3.3
rotary motion
movement, usually of hardware but also applicable to a casement or sash, in a circular path when acted upon by an operating torque, e.g. the turning action of the bow of a key
3.4
sash weight
weight of the opening or closing sash Including its infill (e.g. glazing)
4 Principle of test
The principle consists of measuring the minimum static force or torque required:
— to release or lock the hardware (locks or handles);
— to commence opening of the casement or sash;
— to continue opening/ closing of the sash (in the case of vertical sliding windows);
— to complete closing of the casement or sash.
Upon the clients request the tests may be performed on sashes/casements only to be opened for cleaning or maintenance mode of operation.
52 Linear motion
A linear actuator (hydraulic cylinder or other suitable device) coupled with an electronic load cell and measuring and recording equipment, capable of smoothly reaching the required maximum force. Alternatively, a weight and pulley mechanism shall be used. The apparatus shall be mounted so that it is in line with the casement’s or sash’s nominal direction of travel and not deviating from it by more than ± 5°
5.3 Rotary motion
A torque-meter capable of measuring the torque required to operate the mechanism. The equipment shall have an attachment for connection to the hardware (handle/key) which will enable correct alignment of the forces during test. Alternatively, a weight and pulley mechanism can be used.
This apparatus shall also include any measu ring and recording equipment.
The connection between the measuring device and the test specimen shall he such as to avoid local
damage to the test specimen and shall in no way affect its performance.
6 Test specimen
The test specimen shall be supplied in a fully operable condition. It shall he suitable for fixing into the surrounding frame in accordance with the manufacturer’s published recommendations or standardized instructions.
7 Conditioning and preparation of the test specimen
7.1 Conditioning
Storage and testing shall be carried out in a non-destructive environment within the ranges of 10 °C to 30 °C and 25 % to 75 % relative humidity.
7.2 Preparation
Remove all transport blocks, bracings, packaging and protective wrappings from the test specimen.
The test specimen shall be mounted level, square and without visible twist resulting from the use of fixing devices.
Locking points in tilt and/or turn-windows should be in the neutral position, if the client requires otherwise, the situation shall be stated in the test report.
8 Procedure
8.1 Test sequence
Testing shall start with the casements or sashes of the test specimen closed and with all relevant hardware in the fully engaged position (see Figure 3).
The application of forces or torques shall be arranged to avoid local damage to the test specimen. Tests shall be carried out in accordance with the following predetermined sequence for the application and measurement of the operational forces and torques:
a) disengage the closing and locking hardware;
b) commence opening;
c) remain open for approximately 30 s;
dJ commence closing up to the beginning of the engagement of the closing and locking hardware; e) fully engage the closing and locking hardware.
Repeat the sequences a) to e) three to five times and average the results.
For vertical sliding windows, follow the test sequence in Figure 3 to measure the force to start motion of the sash as set out below in 8.4.2.1. Then subsequently follow the test sequence in Figure 3 again to measure the force to operate the sash as set out below in 8.4.2.2.
NOTE The main compression of the seals are part of sequenced, unless otherwise specified by the client.
8.2 Rate of loading
The maximum load shall be reached in a time between 2 sand 4 s.
8.3 Disengagement of hardware
Apply a force or torque in the direction to unlock the hardware and record the result.
8.4 Measurement of the manual force(s) to operate the casement or sash
8.4.1 For all windows with the exception of vertical sliding windows
8.4.1.1 Measurement of the force to start motion of the casement or sash
Determine the minimum force required in both the opening (from closed) and closing (to closed) directions of travel, for a distance of 100 mm in each case and record the result.
8.4.2 For vertical sliding windows
8.4.2.1 Measurement of the force to start motion of the sash.EN 12046-1-2020 pdf download.
EN 12046-1-2020 pdf download
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