| Manual Pull Station |
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in Cambridge, Massachusetts .]] A manual pull station is an Active Fire Protection device, usually wall-mounted, that, when activated, initiates an alarm on a Fire Alarm system. It is similar in its function to Manual Call Points found in Europe. In its simplest form, the user activates the alarm by pulling the handle down, which completes a circuit and locks the handle in the activated position, and sending an alarm to the Fire Alarm Control Panel . Manual pull stations are often reset using a key, which allows the handle to go back up to its normal position. Many manual pull stations are single action and only require the user the pull down. Other manual pull stations are dual-action, and as such require the user to perform a second task before pulling down, such as lifting up or pushing in a panel on the station. The Fire-Lite BG-10 and the Cerberus Pyrotronics ( Siemens ) MS-501 are examples of this design. Perhaps the most recognizable pull station is the T-bar style pull. The style is so named because the handle is shaped like the letter "T". This style was first manufactured by Simplex , and is now manufactured by many other companies. Resetting a manual pull station after it has been operated normally requires building personnel or emergency responders to open the station using a key, which often is either a hex key ( Allen Wrench ) or a more traditional key. Opening the station normally causes the handle to go back to its original position, allowing the alarm to be reset from the Fire Alarm Control Panel after the station has been closed. SEE ALSO |
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