NM CID EV-98 Practice Questions - New Mexico CID EV-98 Elevators, Escalators And Conveyors Examination Exam

Hoistway doors on a power dumbwaiter shall be provided with locking devices that do which of the following?

Prevent opening a landing door unless the car is at that landing, and prevent running unless the doors are closed and locked Allow any landing door to be opened whenever the car is in motion so freight can be added Be omitted if the car opening is less than 600 mm (24 in.) high Be operable with a standard building master key from every floor at any time

Correct Answer:

Prevent opening a landing door unless the car is at that landing, and prevent running unless the doors are closed and locked

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