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n elevator is a device used for transporting persons, luggage and goods between different floors of multi-storied buildings. Of the various types of elevators available, commercial elevators are the powerful ones and find a wide range of applications in healthcare centers, shopping malls, multiplexes and small scale industries.

Commercial elevators are of hydraulic or electrical types and are available in varying lifting capacities ranging from 1,000 lb to 6,000 lb. Hydraulic elevators that travel 8 floors or less can reach speeds upto 200 ft/min. In the case of electric elevator it is 500 ft/min. Acceciblity equipments that travel above ten floors have speeds ranging from 500 ft/min to 2000ft/min. Hydraulic elevators are commonly used in buildings having 2-8 floors.

Safety Measures in Commercial Elevators

Most commercial elevators are incorporated with excellent safety and security features. Alarm button is provided as a safety measure for signalling outsiders whenever the elevator is in trouble or when the lift gets trapped. An alarm is also triggered when the accissibility equipments are stopped for a long time.

Switches are provided to control the ventilation fan and light in the elevator. Some accessibility equipments are provided with telephone for the passenger to use in case of emergency. Commercial elevators can also be controlled from outside using the up and down button in each floor and all controls are so user friendly that passengers can use them even in the absence of an elevator operator.

Article Source: http://EzineArticles.com/1744616

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