- Handrails and steps travel at exactly same speed to assure steadiness and balance and to aid stepping on or off the comb plates
- Steps are large and steady and are designed to prevent slipping
- Step design and step leveling with the comb plates at each landing prevent tripping upon entering or leaving the escalator. Accomplished with two or three horizontal trad at each end of the escalator.
- Balustrade is designed to prevent the catching of passengers' clothing or packages. Close clearances provide safety near the comb plates and step treads.
- Adequate illumination provided by the building at all landings, comb plates and completely down all stairways. Some units have built-in lighting.
- Automatic service brake will bring to a smooth stop if
a. drive chain or the step chain is broken or abnormally stretched
b. a foreign object is jammed into the handrail inlet, between the skirt guard and step or between steps, causing them to separate.
c. A power failure occurs
d. the emeregency stop button is operated ( on is located at each end of the escalator)
e. any of the fire safety system devices operates
f. a tread sags, rises or breaks
g. a drive motor malfunction occurs
- in case of over or underspeed, an automatic governor shuts down the escalator, prevents reversal of direction and operates the service brake.
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