Talk about the use of dry powder fire extinguishers and precautions

The dry powder fire extinguisher is suitable for the initial fire of flammable, flammable liquids, gases and charged equipment. The ammonium phosphate dry powder fire extinguisher can be used for the initial fire of solid materials in addition to the above types of fires. But none can save metal fires.

Instructions

When the fire is extinguished, the fire extinguisher can be hand-carried or shoulder-fired and the fire extinguisher can quickly go to the fire. The fire extinguisher is put down about 5 meters from the burning place. If you are outdoors, you should choose to spray in the upwind direction. If the dry powder fire extinguisher used is of the plug-in type, the operator should tighten the spray gun with one hand, and open the lifting ring on the gas bottle. If the opening of the gas cylinder is hand-wheel type, unscrew it counterclockwise and rotate it to the highest position, then lift the fire extinguisher. When the dry powder sprayed out, quickly aim at the root of the flame. If the dry powder fire extinguisher used is a built-in gas cylinder or a pressure storage type, the operator should first unplug the safety pin on the opening handle, then live the nozzle part at the front end of the spray hose, and the other hand will open the pressure of the pressure handle. Next, turn on the fire extinguisher and extinguish it. When using a fire extinguisher or pressurized fire extinguisher with a spray hose, the pressure handle should always be pressed down by one hand and cannot be released, otherwise the injection will be interrupted.

Use caution

When using ammonium phosphate dry powder fire extinguishers to fight solid flammable materials, fire should be directed at the place where the combustion is most intense, and fire should be performed up and down and left and right. If conditions permit, the user can use the fire extinguisher to spray along the four sides of the combustion, so that the dry powder fire extinguishing agent evenly sprayed on the surface of the combustion until the flame is completely extinguished.

The use of a cart type dry powder fire extinguisher is the same as the use of a portable dry powder fire extinguisher.