Elevator And Escalator Emergencies, Third Edition, September 2022 Flashcards
An electro-mechanical device used to prevent the elevator from moving when the car is at rest and no power is applied to the hoist motor.
Brake
Glossary Page iv
This stops a descending car or counterweight from moving beyond its normal limits by storing or absorbing and dissipating the car or counterweight’s kinetic energy.
Buffer
Glossary Page iv
This is a panel mounted inside the car containing the car operating controls.
Car operation station
Glossary Page v
This chain balances an elevator car’s load.
Compensation chain
Glossary Page v
This is a device or group of devices that control the direction, speed, and safety mechanisms on the elevator.
Controller
Glossary Page v
This is an enclosed space outside the hoistway that is intended for full-body entry and contains the motor controller.
Control room
Glossary Page v
This can be located inside or outside the hoistway. It contains the motor controller and is intended to be entered with our without full-body entry.
Control Space
Glossary Page v
This is a set of weights roped directly to the elevator car in a winding drum installation. In practice, this weight equals approximately ______ % of the car’s weight.
What is this designed to do?
Counterweight
70 %
It is designed to reduce the work required by the electric motor to move the elevator car
Glossary Page vi
This is a motor-driven device mounted on top of the car that opens and closes the car and hoistway doors.
Door operator
Glossary Page vi
This is the cylindrical keyhole on the hoistway door that elevator drop keys pass through to reach the hoistway door locking mechanism.
These are also commonly referred to as _______.
Escutcheon tube
AKA Elevator door key holes
Glossary Page vii
This is a piece of steel mounted on the car cab door that runs between the hoistway door’s two rollers as the elevator goes up and down the hoistway.
Elevator door vane
Glossary Page vii
When the elevator stops at a floor and the car door opens, the ________ pushes against one of the rollers, opening the hoistway door lock and moving the hoistway door together with the car door.
Elevator door vane
Glossary Page vii
When Manually operated, it removes electric power from an electric elevator’s driving machine motor and brake or from a hydraulic elevator’s valves or pump motor.
Where is this located?
Emergency stop switch
Located in the elevator car
Glossary Page vii
This switch is located in the elevator shaft. It prevents the elevator from descending or ascending too low or too high in the shaft.
What happens when this switch is tripped by the elevator?
Final limit switch
It cuts power to the elevator
Glossary Page vii
These involve steel T-section with machined guiding surfaces installed vertically in a hoistway to direct the course traveled by an elevator car and elevator counterweights.
Guide rails
Glossary Page viii
This is a small device typically located in the penthouse that applies a brake to the cable moving the elevator car; it serves as a mechanical speed control mechanism.
Governor
Glossary Page viii
This is a wire rope attached to an elevator car frame that drives the governor and, when stopped by the governor, initiates setting the car safety.
Governor rope
Glossary Page viii
This is a control panel on top of an elevator car that, when activated, removes the car from normal service and allows the car to only be run from the car top station at inspection speed.
Inspection station (or inspection controls)
Glossary Page viii
This is an electro-mechanical device on the hoistway door that locks the hoistway doors.
What two things does this prevent?
Interlock
The interlock prevents the elevator car from moving until the hoistway door is locked.
It also prevents the hoistway door from opening on the landing side unless the car is stopped or being stopped within the landing zone.
Glossary Page ix
This term refers to the area of the hoistway that extends from a point 18 in. below and 18 in. above the landing
Landing zone
Glossary Page ix
This is an electrical disconnect usually found inside the machine room near the entrance door. Pulling the side lever down removes all operating power from the elevator.
Mainline disconnect
Glossary Page x
This converts a building’s alternating current to the direct current used by electric traction elevators.
Motor Generator
Glossary page x
This valve restricts and ceases oil flow from the hydraulic jack through the piping when such flow exceeds a preset value.
Where is this installed?
Overspeed valve
The overspeed valve is installed in the pressure piping of a hydraulic elevator between the hydraulic machine and the hydraulic jack.
Glossary page x
This is designed to interpret input conditions in a prescribed manner after specified conditions are met.
Relay
Glossary page x
Elevator ropes are typically _____ inches in diameter. Each rope can support the weight of the elevator car plus _______ %
5/8 inches
10%
Glossary page x
This starts, stops, opens, and closes elevator doors at designated hoistways.
Selector
Glossary page x
This is a wheel mounted in bearings that has one or more grooves over which a rope or ropes may pass.
Sheave
Glossary page x
This is an electric machine through which the friction between the hoist ropes and the machine sheave is used to move the elevator car.
Traction Machine
Glossary Page x
This is used for power transmission to the elevator car and communication between the controller and the elevator car.
Traveling cable
Glossary Page x
