When is a full load safety test required on a modernization project?

A full load safety test is specifically required when the dead weight of the elevator car has been increased by more than 5%. This requirement is crucial because an increase in the dead weight can significantly affect the performance of the elevator system, including its stopping distances and the effectiveness of the safety devices. The full load safety test ensures that the elevator can safely handle its increased weight without compromising passenger safety or operational reliability.

Additionally, any modifications that involve substantial weight changes necessitate thorough testing to confirm that all safety mechanisms are functioning correctly under these new conditions. This ensures compliance with safety standards and regulations regarding elevator operation, providing assurance that the device adheres to the necessary operational criteria after the modernization work.