Elevator Rescue

Question 1

Elevator Rescue

Types

Answer 1

Cable (drum type and traction

Hydraulic

Question 2

Elevator Rescue

Drum Type

Answer 2

Car attached to one or more cables that pass around a winding drum and to a moving counterweight.
150’ lifts and slow speed
Requires more space

Question 3

Elevator Rescue

Equipment Room Locations

Answer 3

Drum-Basement or on roof
Traction-roof or above an elevator shaft in high rise
Hydraulic-lower level of building, any floor 50-100’ away from shaft

Question 4

Elevator Rescue

Traction Type

Answer 4

Used for higher lifts and greater speeds
Cables are attached to the car and pass over a traction sheave to counterweights.
Cables passing over the traction sheave unwind as fast as they wind
Car speed is dependent on size of traction sheave and electric motor speed

Question 5

Elevator Rescue

Two Types of Traction Equipment

Answer 5

1. High speed direct traction or gearless type traction: slow speed DC motor directly coupled to a traction sheave with a brake wheel mounted on the motor shaft
2. Geared traction type uses a high speed motor. Motor is geared to a traction sheave through worm gears with a brake wheel between the worm gears and motor

Question 6

Elevator Rescue

Hydraulic

Answer 6

Limited to 6 stories
Older rams powered by water
Newer rams powered by oil pressure

Question 7

Elevator Rescue

Hydraulic Equipment Room

Answer 7

Lower level of building

but can be any floor 50-100’ away from elevator shaft

Question 8

Elevator Rescue

Hydraulic Equipment Room Components

Answer 8

1. Controller or relay panel (electronics necessary to run the elevator)
2. Hydraulic power unit (reservoir for oil, hydraulic pump, and valves to raise/lower car)

Question 9

Elevator Rescue

Freight Elevators

Answer 9

Larger than passenger elevators
12x14’
up to 3 tons

Question 10

Elevator Rescue

Modern elevators utilize two sets of doors for?

Answer 10

Operation and passenger ingress and egress

Question 11

Elevator Rescue

Inner Car Door

Answer 11

Door on elevator car

Travels with the elevator

Question 12

Elevator Rescue

Outer/Hoistway Door

Answer 12

Door that is seen from each floor

Part of building (each landing)

Question 13

Elevator Rescue

4 Types of Doors

Answer 13

Swing Hall
Single Slide
Center Opening
2 Speed

Question 14

Elevator Rescue

Swing Hall

Answer 14

Consists of a hoistway door that is manually opened and a single slide car door that is power operated by a collapsible gate

Question 15

Elevator Rescue

Single Slide

Answer 15

Power operated single panel doors

Question 16

Elevator Rescue

Center Opening

Answer 16

Two power operated panels that part simultaneously with a brisk, noiseless motion

Question 17

Elevator Rescue

2 Speed

Answer 17

Two power operated panels that are geared together.

One door moves twice as fast as the other door so that both doors will meet concurrently int he open position

Question 18

Elevator Rescue

Where is the power unit located that opens elevator doors?

Answer 18

Top of elevator car

Question 19

Elevator Rescue

Gib Blocks

Answer 19

Bottom of hoistway doors

Made of various plastic or phenolic materials

Question 20

Elevator Rescue

Gib Block Dimensions

Answer 20

3" wide
1" high
1/2" thick
Installed every 18" across the underside of door panel
Ride in tracks in floor landing

Question 21

Elevator Rescue
Brakes
What guards against overspeeding?

Answer 21

A Centrifugal Force Governor

Question 22

Elevator Rescue
Brakes
When a car travels in excess of ___ of top speed, governor will activate a safety stop device

Answer 22

20%

Question 23

Elevator Rescue
Brakes
Safeties are installed at the ___ of an elevator car and occasionally on ___ to provide positive emergency stopping when activated by the governor

Answer 23

Bottom

Counterweights

Question 24

Elevator Rescue
Rescue Guidelines
Position personnel equipped with portable radios?

Answer 24

1. Elevator equipment room (access to main power switches and elevator equipment)
2. Floor where elevator is inoperable

Question 25

Elevator Rescue

Turn power off for at least ___ sec to allow relays to reset

Answer 25

30 sec

Question 26

Elevator Rescue
Hydraulic elevators and some cable elevators the hoistway doors will open if the elevator is ___” above or below the floor level.

Answer 26

6”

Question 27

Elevator Rescue

Some CABLE elevators the hoistway doors will open if the elevator is ___ above or below the floor level.

Answer 27

18”