FIRE ALARM

FIRE ALARM (MCP)
1= MCP (Manual Call Point ) 

Manual call points

In Europe, Australia, New Zealand, and Asia, pull stations are generally not used; instead a manual call point is used, which is usually referred to as an  MCP ) within the fire protection industry, as a "transmitter" in Japan, or as a "break glass" by the UK public. They are used to allow building occupants to signal that a fire or other emergency exists within the building. They are usually connected to a central fire alarm panel which is in turn connected to an alarm system in the building, and often to a local fire brigade dispatcher as well. The first modern MCP arrived in Europe in 1972 and was developed by KAC
Manual call point is used to initiate an alarm signal. It can be manual alarm system or part of automatic alarm system. Under normal conditions push button will be in the depressed condition. In the case of fire when the glass cover is broken, the push button will be released by the spring action and will actuate an alarm at the control panel through its switching contacts. In addition to this, there will be an LED indicator on the monitor module for visual indication to locate the call point easily. Previously, the old British standard did not allow hinged covers and plastic resettable elements. Plastic elements must have the same printing as the EN 54 glass.

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Fire alarm pull station

A  (fire alarm pull station ) is an active fire protection device, usually wall-mounted, that, when activated, initiates an alarm on a fire alarm system. 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, sending an alarm to the fire alarm control panel. After operation, some fire alarm pull stations must be restored to the ready position using a special tool or key in order to deactivate the alarm sequence and return the system to normal. Primitive manual stations, requiring only a single action or hand motion to activate, can be subject to unwanted activation by jarring or accidental contact. Early strategies to cope with this problem included requiring the operator to break a pane of glass to release an internal spring-operated mechanism. Manual pull stations that require two hand motions, such as lift up and pull down, or push in and pull down, have since replaced the break-glass and single-action models in many modern installations.