Automatic Rescue Device (ARD)
An Automatic Rescue Device (ARD) is a safety feature that is commonly used in elevators. Its purpose is to detect and respond to power outages or other types of malfunctions that could potentially trap passengers inside the elevator car.
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When a power outage occurs, the ARD automatically activates a battery-powered system that provides enough energy to lower the elevator car to the nearest floor and open the doors, allowing passengers to exit safely. This can also occur in the event of other malfunctions that prevent the elevator from operating normally.
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The ARD is designed to be a fail-safe mechanism, ensuring that passengers are never trapped in the elevator car in the event of a power failure. It is also designed to prevent damage to the elevator system, by preventing the car from dropping uncontrollably in the event of a malfunction.
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In addition to providing safety and protection for passengers, the ARD can also help to reduce maintenance and repair costs by minimizing damage to the elevator system caused by sudden stops or drops.
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Overall, the Automatic Rescue Device is an important safety feature that is essential in modern elevator systems, providing a reliable means of ensuring passenger safety and preventing damage to equipment in the event of power outages or other malfunctions.