Chapter 12 Escalators

Advantage of Escalators:

1. 1. ____ waiting time

2. 2. Handle ___ ______ applications (such as MRT, shopping malls)

3. 3. Escalator system can be _________ if required

4. 4. Can still be used if it is ________

Advantage of lifts:

1. 1. Passenger lifts are preferred in ____ buildings

2. 2. Escalators require more _____ in the building

Angle of escalators:

Higher angle make the escalator _______, occupying less ____ _____ in the building

Higher angle makes it more _______ to take the escalator due to its _________.

Regulation (CP15)

All escalators must have an angle of ____ than or ____ to __ degrees.

Exception!

If an escalator exceed _m height, it can have it up to __ degrees.

Speed of escalator:

Must be ____ than or _____ to ___m/s

Exception!

When the ______ ____ of escalator is more than _m, speed of _____m/s is allowed.

Both the handrail and steps must move at the ____ _____, to prevent users from _______.

Escalator steps and steps chain:

Step: There are 4 wheels per step, 2 _____ wheels, 2 ____ ________ wheels

Step chain: The chain wheels are always pulled __ & pulled ____.

The step tread and step riser gives an _________ to the steps.

Escalator truss:

________ of the escalator system

Combination of _________

Manufactured in _____

_____ steel construction

Balustrade:

Made with _____, transparent _____ or transparent _____

Combplate: F____ and not M_____

Combs: M_____, A_______ to the step

Comb teeth: B______, made of p_____, prevent i______ people

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Escalator controller (Control Panel)

_____ of the escalator system

E.g. Move __ / ____, stop in case of _____ issues, m_________ control, provide l_______ control

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Emergency Stop Push Button:

To ____ escalators during emergency

Ideally all escalators must have _ buttons, Entrance & Exit

Possibility of a ____ push button, in the _____ if the escalator is very long

Skirt guard:

M_______ the chance of foreign object getting ______ between the ____ and the __________.

Apex guard:

Used when the escalator is ____ to the building wall, floor.

Made of plastic

Gives a ______ knock (to ____ the users) to avoid a major accident by hitting the building wall/floor

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