Specification of wheeled dry powder fire extinguisher
According to the weight of dry powder, the wheeled fire extinguisher can be divided into five specifications: mft25, mft35, mft50, mft70 and mft100.
Specification and performance characteristics of wheeled dry powder fire extinguisher
1. This series of fire extinguisher has the characteristics of large fire extinguishing range, high efficiency and rapid fire extinguishing. The dry powder fire extinguishing agent inside has the advantages of good electrical insulation, not easy to be affected by moisture and deterioration, and easy to keep.
2. The gas is non-toxic, tasteless and harmless to human body after spraying.
3. The head valve of the fire extinguisher is equipped with a pressure gauge, which can display the internal pressure and is convenient for maintenance.
Application scope of wheeled dry powder fire extinguisher
It can be used to put out general class B fires, such as oil products, grease and so on. It can also be applied to class a fires, but it can not put out water-soluble flammable and flammable liquid fires in class B fires, such as alcohol, ester, ether, ketone and so on; It is also unable to put out live equipment and class C and D fires.
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Operation steps of wheeled dry powder fire extinguisher
1. The wheeled fire extinguisher must be operated by two persons.
2. Before using the fire extinguisher, first check whether the pressure is effective, and then check whether the spray gun, hose and interface are well sealed and undamaged.
3. One person overturns the handlebar several times before and after confirming that the dry powder is effectively loose, then orders the other person to quickly hold the spray gun, pull the hose forward, and hold the spray gun tightly with both hands to fight.
4. The pusher moved the car to the windward position 8 to 10 meters away from the fire, pulled out the safety pin, and prepared to open the valve.
5. When hearing a command from the front, the latter immediately opens the valve. The former pulls on the spray gun and sprays at the root of the flame. The fire is put out by far approaching and sweeping forward.
6. After the fire is extinguished, close the valve and stop spraying the extinguishing agent.
Notice for use of wheeled dry powder fire extinguisher
When using the carbon dioxide fire extinguisher, if it is used outdoors, it should be sprayed in the upwind direction, and the hand should be placed on the wooden handle of the cylinder to prevent frostbite. If it is used in the narrow space outside, the operator should leave quickly after extinguishing the fire to prevent suffocation.
Service life of wheeled dry powder fire extinguisher
The wheeled dry powder fire extinguisher is used for 10 years, and it is repaired once every 5 years after leaving the factory. After the first repair, it is repaired once every 2 years.
Inspection and maintenance of wheeled dry powder fire extinguisher
1. Check whether the rotating parts on the frame are flexible, and often check whether the dry powder has caking phenomenon. If caking is found, replace the fire extinguishing agent immediately; Check the weight of carbon dioxide regularly. If the weight of female mouth is reduced by 1 / 10, replenish air immediately; Check the seal and safety valve device. If any fault is found, it must be repaired in time and can be used after repair; Every three years, the dry powder storage tank needs to pass the 2.5MPa hydraulic test, and the carbon dioxide cylinder needs to pass the 22.5MPa hydraulic test before it can continue to be used.
2. Check the carbon dioxide cylinder for leakage once every six months. The inspection method is to unload the carbon dioxide cylinder and weigh it with a scale. The total weight minus the weight of the cylinder is the actual amount of carbon dioxide. The leakage of carbon dioxide of portable fire extinguisher is more than 5% or 7% of the rated inflation volume; When the trolley reduces 1 / 10 of the rated storage weight, it should be sent to the repair department for inflation.
3. Check the powder outlet pipe, inlet pipe, nozzle, spray gun and nozzle once a year for damage or dry powder blockage. Check the dry powder cylinder for corrosion, parts for integrity, looseness, deformation and damage. Check the dry powder for deterioration and caking. If unsafe factors exist, repair or replace immediately.
4. Check whether the pointer of the pressure gauge is in the green area. If the pointer is in the red area, find out the cause and re inflate after maintenance.
Daily maintenance of wheeled dry powder fire extinguisher
1. Storage temperature: - 10 ℃ ~ + 45 ℃; It is not allowed to be exposed to the hot sun, close to the fire source or subjected to severe vibration.
2. The fire extinguisher should be placed firmly, and the storage place should be ventilated and dry.
3. Frequently check whether the exercise mechanism is flexible and convenient.
4. Frequently check whether the safety pin and lead seal are in good condition, whether the pressure value meets the requirements, and whether the parts are loose, deformed, corroded or damaged.
