Vertical Transportation Flashcards
What are the two major types of elevators?
Hydraulic and Electric
T/F Hydraulic Elevators are used in buildings 2- 6 stories high.
True.
What are the two types of electric elevators? Which one is used on slower speeds and which type on higher speeds?
Gearless Traction- high-speed elevators Geared Traction- slow-speed
What is roping?
The arrangement of cables supporting the elevator.
What is the most common operation type for elevators?
Selective Collection Operation- the elevator remembers and answers all calls in one direction and then reverses and answers all calls in the opposite direction.
What type of elevator operation system is used for large buildings with many elevators?
Group Automatic Operation- controls the elevators with programmable microprocessors to respond to calls in the most efficient way.
What is the minimum clear door opening width of an elevator?
36”