A Reliable Forecast of Lift System Wear

Lift System Condition Monitoring to support servicing activities has hitherto been restricted to calling up fault storages of the actual lift control systems and occasionally of the lift drive units, each manufacturer using its own concepts. Sensors detecting the amount of wear in a lift system are currently used – if at all – in form of mobile systems only. They allow random tests to be made of the cab’s acceleration behaviour, to determine how the noise is developing or to detect the rope tension and put respective measurements at the technician’s disposal uncommented. Such systems are used to conduct initial tests aiming at converting the interval-based maintenance activities common to lift systems into a condition-oriented or even proactive maintenance.