Elevators Flashcards
According to book 29, a centrifugal force Governor in elevators engages when the elevator reaches over what percent of it’s top speed?
Engages at 20% over top speed
According to book 29, when releasing the brakes of a cable elevator, stop when the car is within what distance of the floor landing?
Within 18”
What is the max lift of drum type elevators?
150’
Where are the equipment rooms for hydraulic elevators usually found?
Lower floor 50-100 feet from elevator
Freight elevators can be what size?
12’ - 14’ and carry 3 tons
What are the dimensions of the gib blocks?
3” wide, 1” high, 1/2” thick
Gib blocks are installed how far from each other?
Every 18”
Most hoist way doors have how many gib blocks?
2
When recycling power to an elevator, how long should you leave the power off for?
30 seconds
On hydraulic elevators, the hoist way door will open if the car is within how many inches of the floor?
6”
On cable elevators, the hoist way door will open if the car is within how many inches of the floor?
18”
How long is the pickup arm of the hoist way door on a hydraulic elevator?
14”
How long is the pickup arm on the hoist way door of a cable elevator?
36”
An escalator traveling 90-120 feet per minute can transport how many people per hour?
5000
Blind elevator shafts may have access panels how far apart?
80 feet
