Fire-fighting return system and application method thereof
A technology of fire protection and fire switch, which is applied in elevators, elevators in buildings, transportation and packaging, etc., which can solve problems such as inability to guarantee elevator operation control and increase user safety factor
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[0025] refer to Figure 1-2 , the fire return system and method of use thereof, including a fire switch for sending a fire emergency return command, and when the elevator receives the fire emergency return command sent by the fire switch, the following steps are specifically performed:
[0026] (1) All hall call commands, car running commands and registered running commands are cancelled;
[0027] (2) The door opening system and emergency system installed in the car keep working, and the reverse door opening system stops working;
[0028] (3) The elevator immediately leaves the group control or parallel control and performs the emergency return work alone;
[0029] (4) The fire emergency return command cannot give priority to the maintenance control state and the emergency electric control state, nor can it cut off the operating state of the two, and the sound signals in the elevator machine room and the car will sound immediately until the inspection or emergency electric co...
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