MD Elevator Mechanic case studies
MD Elevator Mechanic · Put your knowledge to work in context.
The Maryland Elevator Mechanic credential is a state-issued license administered through the Maryland Department of Labor's licensing division. It is intended for tradespeople who install, alter, service, repair, and maintain elevators, escalators, dumbwaiters, moving walks, and related conveyances in Maryland, and for apprentices and helpers working toward that status under supervision. The MD Elevator Mechanic case studies are 5 cases and about 3,367 words.
1Hydraulic Power Unit Replacement in a 1928 Building
You are the licensed elevator mechanic responsible for a 1928 six-story apartment building in Baltimore. The building has a two-stop hydraulic passenger elevator rated 2,500 lb.
724 words, about 4 min2Intermittent Stall on a 480 V Geared Traction Unit
A 12-year-old geared traction elevator in a 6-stop office building runs at 250 fpm with a 40 hp, 480 V, 3-phase motor. On hot afternoons the car intermittently stalls on acceleration, the controller logs an undervoltage fault, and one line fuse has blown twice in two weeks.
705 words, about 4 min3Escalator Comb Impact at a Transit Station
You are called to a 40 ft rise, 30-degree escalator at a busy Maryland transit station during the morning rush. The inspector on duty reports that three comb teeth are broken, the step-to-skirt gap at one location measures 5 mm, and the comb impact device did not trip when tested with a gauge.
653 words, about 3 min4Expired License and an Unlicensed Helper
You are an elevator mechanic employed by a Maryland elevator contractor. Your license renewal was due last month, and you have not completed the continuing-education hours or paid the renewal fee.
648 words, about 3 min5Passengers Stalled Between Floors in a Hydraulic Elevator
You are called to a three-stop hydraulic elevator in a Maryland office building. The car is stalled about 3 ft below the second-floor landing with four passengers inside.
637 words, about 3 min