Maintenance system, surely takes important role for daily operational lift. A liftÂ which frequently broken could delay the activities. The right maintenance system shouldÂ be the one that is planned well. If we could identify or estimate an elevator reliabilityÂ level, then we could determine when should the maintenance, in form of partÂ replacement, best to perform. The data shown that lift NPX-36000 is the critical lift andÂ its critical part is PCB, because of PCB failure percentage is more than 50% from allÂ failure.
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