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Master tech > Elevators > Flashcards

Elevators Flashcards

1
Q

when did Elisha graves Otis invent the first elevator brake

A

1853

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2
Q

What are the three main components to any elevator?

A

machine room
elevator car
hoist way

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3
Q

regarding the material which the hoist way is made of how many hour fire rating should it have

A

2 hour

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4
Q

Per building code, how many elevators can share a single hoistway?

A

4

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5
Q

You are tasked to estimate the location of the elevator by locating the counterweight. In a 15 story building, if the counterweight was on the 3th floor, where would the elevator car be?

A

13

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6
Q

How are elevator shafts numbered for a building?

A

A. Starting with the first hoistway on the left of the main building entrance and continue clockwise.

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7
Q

What speed will an elevator travel at when placed in the inspection mode?

A

150 feet per minute

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8
Q

After removing power to and evacuating all elevators in the hoistway, you are tasked to force entry through the hoistway doors with hydraulic spreaders. When forcing entry, where do you place the spreaders?

A

as high as possible

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9
Q

Excluding when working in conditions which warrant the use of a harness and lifeline, what is the recommended minimum personal protective equipment (PPE) for working on and near an elevator?

A

Helmet and gloves only

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10
Q

What is the recommended maximum number of personnel when working on top of an elevator car?

A

3

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11
Q

Firefighters dressed in full PPE with tools can weigh well over 200 lbs each. With this in mind, what is a good “rule of thumb” maximum in order to not overload an elevator car?

A

2 companies

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12
Q

What are escalator treads made of?

A

die cast aluminum

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13
Q

What is the most widely recognized code in regard to the design, manufacture, installation and maintenance of elevators, dumbwaiters, and escalators and moving walks?

A

A. ANSI 1-17.1

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14
Q

In regards to the different phases of fire service, which permits special operation for firefighters or other authorized emergency personnel within the car?

A

phase 2

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15
Q

What term describes the part of an elevator system which, when tripped by the elevator it cuts power to the elevator motor. This item is located at the top or bottom of an elevator shaft and prevents the elevator from descending too low or ascending too high.

A

final limit switch

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16
Q

An over speed governor switch will trip a switch when the motor speed increases over its rated nameplate speed. What is the percentage over the rated nameplate speed which the switch will trip?

A

20%

17
Q

How far above and below the landing does the “landing zone” extend?

A

18 inches

18
Q

Which term describes a wheel mounted in bearings having one or more grooves over which a rope or ropes may pass?

A

sheave

19
Q

Elevators as we know it today was first developed during the:

A

1800s

20
Q

Definition of Elevator:

A

a platform or enclosed platform that is capable of moving vertically

21
Q

The location for hydraulic systems is normally found on the:

A

lower floors and basement

22
Q

When is an electric traction elevator required?

A

buildings over 60 feet

23
Q

What are the two power sources for each elevator?

A

the main line disconnect and an auxiliary system (circuit brake panel)

24
Q

What class extinguisher is best for hydraulic elevator pit fire?

A

Class B

25
Q

On an escalator, where is the emergency shut off located?

A

at the bottom of the escalator under the hand rail

26
Q

Designed to stop a descending car or counterweight moving beyond its normal\ limit of travel by means of storing or absorbing and dissipating the kinetic energy of the car or counterweight:

A

buffers

27
Q

A door consisting of two panels which move vertically way from each other when opening and toward each other when closing, while each panel is traveling in the vertical direction.

A

vertical bi-parting door

28
Q

what control in phase II will quickly stop the elevator

A

emergency stop button

29
Q

The machine room for Electric Traction Systems are normally located at the

A

top of the shaft or roof

30
Q

Hoistway doors have a fire resistance rating of:

A

1 1/2 hours

31
Q

Which elevator allows the machine to be mounted within the hoistway itself?

A

Otis gen2

32
Q

what procedure should be one of your last options

A

poling up

33
Q

The manual lowering valve on a hydraulic elevator usually has a handle of what shape?

A

T handle

34
Q

When using an elevator during a building fire, crews must stop how many floors below the fire floor and ascend the remainder via stairs?

A

2

35
Q

Elevators should be stopped every ____ floors to ensure the care is responding to commands.

A

5

Master tech (11 decks)

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