1. Foam extinguisher: applicable to AB type fire, divided into chemical foam and mechanical foam, chemical foam used upside down, is now out of use, and mechanical foam used the same way as powder extinguishing agent. Disadvantages: it causes pollution and can't be used in Class C fire. It should be checked every four months and replaced once a year.
2. Carbon dioxide extinguisher is suitable for BC type fire, use method: A) pull out the insurance latch: b) hold the horn nozzle and valve handle; C) Under pressure, it is ejected at high internal pressure. Check every 3 months, lose weight 2 "need refill." Disadvantages: Users are prone to frostbite.
3. Dry powder fire extinguisher: it can be divided into ABC and BC dry powder. ABC fire extinguishers are applicable. B) The nozzle tube is oriented towards the flame and can be ejected by pressing the valve handle. Three months to check the pressure gauge (1.2 Mpa) effective time limit of three years.
4. Clear water extinguisher: It is best for extinguishing Class A fires, not other types of fires. Using the clapping method: first, put the water extinguisher upright and steady, take off the protective cap, and open the protrudent head at the top of the bar with the palm, and the water will flow out from the nozzle.
