- This type of portable fire extinguisher has a compact design so it is suitable for use in offices, homes or public buildings.... This type of extinguisher is used to extinguish class A fires. (can extinguish fires from solid substances such as wood, paper and plastic products..), type B (used to extinguish fires from liquids such as gasoline, oil, alcohol, wine...), type B C (used to extinguish fires from gases such as gas...).
- The firefighting principles of portable ABC powder extinguishers are:
- When the valve is opened, thanks to the force of compressed air, the dry powder in the tank is sprayed out. When the powder comes into contact with a fire, it will inhibit the combustion reaction and help isolate the combustible substance from oxygen in the air. On the other hand, it helps prevent flammable gas vapor from entering the fire area, helping the fire to be extinguished. How to preserve as well as notes when checking portable bottles include: First, we must put the tank in a place that is easy to see and convenient for taking out to extinguish the fire. They must be placed in a dry and ventilated place. Avoid places where direct sunlight shines, and where there is strong heat radiation and the highest temperature is about 50 degrees Celsius.
- If we leave these pots outside the house, they must be placed in a covered place.
- When moving, we must move gently, avoiding direct contact with high temperatures or vibrating equipment.
- One thing to always pay attention to is to regularly check the tank according to the manufacturer's regulations, about every 3 months. If you see the needle on the pressure gauge below the blue line, you need to refill it.
- After we have opened the fire extinguisher valve, we need to refill it immediately. And before refilling, we should also remove the components and clean the parts that have been contaminated with powder.
- Before removing, we need to check the pressure again. If it is still there, we must reduce the pressure by slowly squeezing the valve to let the air escape. The pressure gauge needle points to 0. When opening and hearing a hissing sound, we must immediately stop and re-check. Before and after each new gas fill and after 5 years of use, the tank shell must be hydraulically tested to a minimum of 30 Mpa to meet standards and be used again.
- Must check the nozzle and propellant through pressure gauges or weigh and compare with the original mass.
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