ELEVATORS AND ESCALATOR Flashcards
(113 cards)
was signed into law by President Bush on July 26, 1990. The ____ is designed to
give civil rights protection to people with disabilities, similar to those granted by the Civil Rights Act.
“American With Disabilities Act
An electric bell located either in or outside the hoistway that should be auto building operating personnel; it is
connected to a pushbutton in the car operating panel, and is available to elevator passengers for summoning aid in
emergencies. A second, battery operated bell is recommended located on the car itself as a back up or for use
during a possible power failure.
Alarm Bell
An integral part of an elevator or dumbwaiter driving machine which operates to stop the unit and/or to hold the
weight of the load at a fixed position
Brake
Moving member(s) of a brake, lined with friction material which, when in contact with the brake drum, hold the
elevator at floor level. On some types of control, it will stop the elevator when power is removed from the hoist motor
Brake Shoe
A device, usually of carbon or graphite composition, used to connect a circuit with the rotating or moving portion of a
DC motor, generator, or other electrical device. It carries current to and from the non-moving parts of connections.
Brush
A device located in the pit designed to stop a descending car or counterweight beyond its normal limit of travel. This
is done by absorbing and dissipating the kinetic energy of the descending car or counterweight.
Buffer
A buffer using oil as a medium which absorbs and dissipates the kinetic energy of the descending car or
counterweight.
Oil buffer -
A buffer utilizing a spring to dissipate the kinetic energy of the descending car or counterweight
Spring buffer -
In contract service, this is a customer request which required a check of an elevator other than the regularly
scheduled maintenance.
Callback
The load-carrying unit, including its platform, framer, enclosure and car door or gate.
Car (Elevator)
A set of weights roped directly to the elevator car of a winding-drum type installation. In practice, this weight is equal to approximately 70% of the car weight
Car Counterweight
An electrical device. The function is to prevent operation of the driving machine by the normal operating device,
unless the car door or gate is in the closed position.
Car Door or Gate Electric Contact
The top and the walls of the car resting on, and attached, to the car platform.
Car Enclosure
The supporting frame to which the car platform, upper and lower set of guide shoes, car safety and the hoist ropes or
hoist rope sheaves, or the plunger of a direct plunger elevator are attached.
Car Frame (Sling)
A panel mounted in the car containing the car operating controls, such as call register buttons, door open and close,
alarm emergency stop and whatever other buttons or key switches are required for operation
Car Operating Station
Is the assembly of buttons, lights, switches, etc. placed in the elevator car for use of passengers and/or attendant, for
entering passenger destinations and for operation of safety features.
Car Platform
A motor-operated or electromagnetic-operated device on the car. It is used to unlock the hoistway door locking
system or interlock.
Car, Retiring
A control panel on top of an elevator car. When activated, it removes the car from normal service and allows the car
to run at inspection speed from the car top station only.
Car Top Inspection Station
The clear vertical distance from the pit floor to the lowest structural or mechanical part, equipment, or device installed
beneath the car platform (except guide shoes or roller guides, safety jaw assemblies and platform aprons or guards) when the car rests on its fully compressed buffers.
Clearance, Bottom Car
The shortest vertical distance between the top of the car crosshead, or between the top of the car where not
crosshead is provided, and the nearest part of the overhead structure or any other obstruction when the car floor is level with the top terminal landing.
Clearance, Top Car
is a system of regulations pertaining to the design, manufacture, installation and maintenance of elevators,
dumbwaiters, escalators and moving walks. The most widely recognized and used is ANSI A-17-1, sponsored by the National Bureau of Standards, the American Institute of Architects, The American Society of Mechanical Engineers,
and published by ASME. It has been adopted by many states. Some state and cities have written their own codes,
most of which are based on the ANSI A-17-1.
Code
The electrical system that directs the mover. It starts and accelerates the elevator, maintains contract speed, initiates
and controls the slow down, leveling and stopping. Usual control systems are generator field control utilizing a motor
generator to convert the line ac to dc (dc being the main power for larger hoisting machines), and various types of
direct drives wherein the line ac is converted to dc by means of solid state devices such as SCR’s. Variable
frequency ac utilizing and ac hoisting machine is another form of direct drive.
Control, Elevator
A system of speed control which is accomplished by the use of an individual motor driven generator for each elevator
or dumbwaiter. The voltage, applied to the hoisting-machine motor, is adjusted and speed varied by varying the
strength and direction of the generator field
Control, Generator-Field
A device or group of devices which serves to control, in a predetermined manner, the apparatus to which it is
connected.
Controller