1. Bring the fire extinguisher to the scene: carry the fire extinguisher on hand and hurry to the fire place. Put the fire extinguisher at a place about 5 meters away from the fire source. Flip the extinguisher up and down several times before using it to prevent the powder from caking.
2. Then open the lead seal and unplug the safety pin. At this point, in order to ensure the availability of fire extinguishers, the unopped-fire extinguishers are in a protected state and cannot be normally used.
3. Hold the fire extinguisher nozzle in the left hand and lift the pressure handle in the right hand to ensure that the fire extinguisher is upright and aim at the bottom of the fire source to extinguish at the upper air outlet.
4. In the process of extinguishing the fire, control the fire step by step, and keep pressing with the right hand to ensure the normal injection of dry powder.
