The fire extinguisher uses a four-character formula.

The four-word formula for using a fire extinguisher is: lift, pull, hold and press.

Lift, lift means to lift the fire extinguisher. Hold the handle with your right hand, drag the bottom of the fire extinguisher with your left hand, check the pressure gauge of the fire extinguisher, confirm whether the pointer is in the green area, and rotate and shake the fire extinguisher. Dial number two. The pick is to pull out the safety bolt. When using, first lift the fire extinguisher to the fire site, put it down and pull out the safety pin.

Three-grip means that the right hand holds the handle and the left hand holds the pressure handle of the switch valve. If it is a carbon dioxide fire extinguisher without a spray hose, you need to pull the horn up about 70-90 degrees. Four presses, pressing is pressing the handle. Press the handle and aim at the flame. When using carbon dioxide fire extinguishers outdoors, you should choose to spray against the wind. When used in a narrow indoor space, you should leave quickly after extinguishing the fire to prevent suffocation.

Precautions for using fire extinguishers:

1. Don't point the cover and bottom of the fire extinguisher at the human body. Prevent the lid and bottom from popping out and hurting people.

2, don't spray with water at the same time, so as not to affect the fire extinguishing effect.

3. When putting out an electrical fire, you should first cut off the power supply to prevent people from getting an electric shock.

4, fire fighting, personnel should stand in the windward. About 2-5M away from the fire source.

5. The hand holding the nozzle should be held at the glue nozzle to prevent frostbite.

6, indoor use, should strengthen the ventilation.