23 Chapter Topic Main points 12 Replacement of landing door locking devices • The new locking device, even if it is a single replacement, must be equippedwith the type certificate • While at the floor the doorsmust be closedunless the systemis equippedwith a device against uncontrolledmovements • In the case ofmotorized doors, the barrier devicemust be installed to protect the closingmovement of the doors 14 Replacement of hydraulic equipment - Replacement of the machine • Check piston-cylinder sizing • Regularization of hydraulic pipes with the application of the gate, if not already existing • Complywith table 12 of UNI EN81-20 • Adjust the slam-shut valve • Check overpressure valve calibration • In case ofmachine replacement, provide for devices against oil spillage 15 Variation of the nominal speed • In the event of an increase in speed uphill greater than 5%: - Install suitable shock absorbers in the pit - Check the suitability of the parachute at the new speed - Set the max maintenance speed to 0,63 m / s - The cabin must be equipped with doors - Check compliance of free spaces at the ends of the run - Check the status of the limiter at the new speed - Ensure the accuracy of the stop at the floor and its levelling - Adjust the slam-shut valve • In the case of an increase in upwards speed greater than 15%: - Set the max speed under maintenance to 0,63 m / s - The cabin must be equipped with doors - Check free spaces at the ends of the trip - Adjust the overrun switch in indirect action lifts - Check that the piston stops with a cushioned effect - Ensure the accuracy of the stop at the floor and its levelling 21 Substantial modification of the system • An existing lift in the event of modification is not considered a new installation if: - The same hoistway is present - The same machine room is present - Existing guides and their fixings are present, or fixings only. - A significant component is kept in place 22 Cab replacement in the same frame • In case of car replacement: - The new car must be equipped with doors - A power socket must be installed in the pit - A parapet must be provided and a toe board must be installed on the roof of the new car for distances over 0.30 m from the shaft walls - Emergency lighting must be available in the car and on the car roof - An overload control device must be installed Il filo conduttore di entrambe le norme è che la valutazione del livello di sicurezza dell’ascensore deve tener conto della sicurezza garantita dal componente modificato, di quella garantita da tutti i componenti influenzati dalla modifica e della sicurezza globale dell’ascensore modificato The common thread of both regulations is that the assessment of the lift’s safety level must take into account the safety guaranteed by the modified component, the safety level of all components affected by the modification, and the overall safety of the modified lift
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