Classroom on demand

Welcome to Classroom on demand, your source for educational materials related to the vertical transportation industry. This site represents the knowledge and expertise of the best engineers and mechanics in the elevator industry, and will help those new to the elevator industry learn about the basic workings of elevator systems, and also will serve as a reference for people with more experience.

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1 Glossary

Hall Call, Landing CallIndication of the passenger's destination direction enter...
Hoistway AccessAn option which allows access to the hoistway from the lowest and...
In Use LightsSignal on freight elevators used to indicate that the elevator is e...
Independent ServiceWhen activated through a key switch, the car is removed from ...
Limited Access Features - CarCar Call Lockout – a feature which allows the user ...
Limited Access Features - HallHall Call Lockout – a feature which allows the use...
One-Floor Run CircuitA special circuit used when the elevator must run from one ...
OperationThe system by which the elevator responds to car and hall calls.
Operation - Constant PressureA very simple form of elevator operation where the ...
Operation - Momentary Pressure or Full AutomaticA simple form of elevator operat...
Operation - Selective CollectiveA modern form of elevator operation where the sy...
Registered CallA signal initiated by pressing a car or landing pushbutton, indic...
Simplex OperationController operation that involves only one car.

4 The Traction Elevator

Controller/Selector ModuleController/Selector Module: The controller, using micr...

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