EOG glossary elevator definitions

Unit: Responsible organizational element for incident-specific Planning, Logistic, or Finance activities.
Water Tender: Ground vehicle designed to transport specified quantities of water.

Buffer Springs: Springs in the elevator pit that stop a hydraulic elevator when manually lowered to the bottom floor.
Car Station (C.O.P.): Inside the elevator, it contains buttons and key switches for operation.
Car Top Emergency Exit: Rescue option for hydraulic or traction elevators when stuck between floors, located on top of the car.
Car Door Clutch: Coupling device that connects car and hall doors when the car is level with the floor.
Door Operator: Mechanism located on top of the car that opens and closes the elevator doors.
Door Restrictor: Prevents car doors from opening when the elevator is between floors, often a collapsible bar on the car door clutch.
Elevator Mechanical Room: Houses machinery for elevator movement and the main disconnect switch.
Fire Service Phase I Switch: A three-position switch (On, Off, Bypass) located in the elevator lobby to operate elevators during Phase I fire service.
Fire Service Phase II Switch: A three-position switch (On, Off, Hold) used with car station buttons for Phase II fire service operations.
Flag (lift rod): A component that allows the hoistway access key to unlock the hall doors.
Hall Station: Controls for the elevator, including hall push buttons or keyed switches located outside the elevator.
Hoistway Access Key: Tool for unlocking hall doors to assist trapped passengers.

Interlock: Security feature that keeps hall doors locked when the elevator is not at the floor.
Knox Box: Container at the main egress floor that holds the elevator fire service control key.
Lift Rod: Connects the pick-up rollers to the latch keeper on the hall door.
Main Disconnect: Switch in the elevator mechanical room that removes power from the elevator.
Manual Lowering Valve: Used to lower hydraulic elevators during rescue operations, found on the main valve.
Oil Line: Delivers oil from the reservoir to the jack in hydraulic elevators.
Pick Up Rollers: Components on hall doors that the car door clutch engages to unlock and open hall doors at the floor.
Valve (main): Regulates oil flow in hydraulic elevators and controls speed; contains the manual lowering valve.