BS EN 00115-2:2010 pdf download
BS EN 00115-2:2010 pdf download.Safety of escalators and moving walks Part 2: Rules for the improvement of safety of existing escalators and moving walks.
5.3.3 The Lateral displacement of me steps or pallets out ot their guiding system shall not exceed 4 mm at either side and 7 mm for the sum of clearances measured at both sides.
The vertical displacement shall not exceed 4 mm for steps and pallets and 6 mm for belts.
5.3.4 Clearances for steps with cleated risers and pallets with meshing front and rear edges shall not exceed
6 mm between two consecutive steps or pallets in any usable position measured at the tread surface.
Clearances for steps with plain risers and pallets without meshing shall not exceed 5 mm between two consecutive steps or pallets In any usable position measured at the tread surface.
In the area of the transition curves of moving walks with meshed front edges and rear edges of the pallets, this clearance is permitted to be increased to 8 mm.
5.3.5 A missing step’pallet shall be detected and the escalatori’moving walk stopped before the gap (resulting from the missing steppallet) emerges from the comb, This shall be ensured by a device according to EN 1 15-1 :2008+A1 2010. Table 6 k), provided at each drrving and return station.
5.3.6 The steppallet chains and the belt shall be tensioned continuously. The escalatormoving walk shall be stopped automatically before the tensioning device moves excessively (see EN 115-1 :200B+A1 2010. 5.4.3.3 and Table 6 e) and ffl. Springs working in tension are not permitted for the tensioning device. When weights are used for tensioning they shall be safely retained should their suspension break.
5.4 DrIve units
5.4.1 DrivIng machine
Stopping the escalator or moving wa*c by means of the electric safety devices shall be effected as follows:
The supply shall be interrupted by two independent contactors, the contacts of which shall be in series in the supply circuit. If, when the escalator or moving walk is stopped, one of the main contacts of one of the contactors has not opened starting shall be impossible.
II a hand winding device Is provided it shall be easily accessible and safe to operate. If the hand winding device is removable an electric safety device shall be actuated when or before the hand winding device is put on the machine. Crank handles or perforate hand wheels are not pemlitled.
5.4.2 Braking system
5.4.2.1 It the design does not prevent excessive speed, escalators and moving walks shall be equipped in such a way that they stop automatically before the speed exceeds a value of 1,2 times the nominal speed. Where speed control devices are used for this purpose they shall have switched off the escalator or moving walk before the speed exceeds a vakie of 1,2 times the nominal speed and shall be provided with an electrical safety device in accordancewith EN 115-1:2008+A12010. Table 6c).
5.4.2.2 Escalators and inclined (a 6) moving walks shall be equipped with an electrical safety device in accordance with EN 115-1 :2008+A1 :2010. Table 6 C) in such a way that they stop automatically by the time the steps and pallets or the belt change from the pre-set direction of travel.
5.4.2.3 The interruption of the electricity supply to an electromechanical brake shall be effected by at least two independent electric devices. They can be those which break the supply to the machine. II after the stop of the escalator or moving walk one of these electric devices has not opened, restarting shall be prevented.
5.4.2.4 A device shall be provided to monitor the lifting of the braking system after starling the escalator moving walk.
5.4.2,5 Escalators and inclined moving wali.s shall be equipped with auxiliary brake(s) if
a) the connection between the operational brake and the driving sprockets of the stepspallets or the drum of the belt is not accomplished by shafts, gear wheels, multiplex chains, or more than one single chain.
