CET Elevator case studies
CET Elevator · Put your knowledge to work in context.
The CET (Certified Elevator Technician) designation appears on NAEC's certification roster alongside CAT and QEI, described as an industry-recognized credential that "validate[s] your skills and knowledge, ensuring compliance with industry standards and safety codes." NAEC, founded in 1948 and self-described as the premier association representing the elevator industry, positions certification as a way to demonstrate expertise and dedication and to gain a competitive edge in vertical transportation. The CET is aimed at working elevator technicians and candidates building a career through classroom instruction plus hands-on field training, such as NAEC's apprenticeship pathway. The CET Elevator case studies are 5 cases and about 3,355 words.
1Flooded Pit and a Lone Mechanic
You are the only mechanic on site at a 9-story office building with two overhead traction elevators. On Saturday at 07:30 the property manager calls because Car B is stopped at the lobby with its doors open.
754 words, about 4 min2Loaded Stop Below Floor After Brake Work
A 1,600 kg geared traction passenger elevator with 2:1 roping serves eight stops in a medical office building. The brake coil was replaced two weeks ago.
708 words, about 4 min3Rail Joint Step on a New MRL Installation
A new six-stop machine-room-less traction elevator is being commissioned in a hotel. Rated load is 1,000 kg and contract speed is 1.75 m/s.
626 words, about 3 min4Partial Modernization of a Legacy Hydraulic Elevator
A 1968 six-stop hydraulic passenger elevator in a 40-room boutique hotel is scheduled for a partial modernization. The owner will replace the relay controller, the door operator, and the car interior, but will keep the existing cylinder, jack, power unit, car frame, and 2,000 lb capacity plate.
664 words, about 3 min5Intermittent Call Cancellation in a Bank Elevator
A 12-stop traction elevator in a bank building has an intermittent complaint: during the morning rush, a registered car call sometimes cancels and the doors reopen just as the car starts from the lobby. It happens two to four times a week and has not been duplicated on a quiet afternoon.
603 words, about 3 min