How to maintain the fire extinguisher after buying it?

l) Before maintenance, the fire extinguisher should be inspected one by one, and the model specification, manufacturer, factory date, basic parameters and other information of the fire extinguisher should be determined and recorded.

2) The maintenance of the fire extinguisher should be carried out according to the following procedures: Conduct a visual inspection of the fire extinguisher to confirm the specifications and models of the fire extinguisher and whether it belongs to the scope of scrapping. Check the internal pressure of the fire extinguisher, and only when it is confirmed that there is no pressure inside the fire extinguisher, it can be disassembled Scrap the fire extinguisher that is confirmed to be within the scope of scrapping Conduct a hydrostatic test on the jet hose components of the fire extinguisher, gas cylinder, head and cart-type fire extinguisher that are confirmed not to be scrapped one by one, and can only be used after passing the fire extinguisher barrel Clean, dry powder, carbon dioxide and clean gas fire extinguishers should be used after drying the cylinder Check the fire extinguisher accessories, replace the seals and damaged parts According to the provisions of the corresponding standards and nameplates of the fire extinguisher, the fire extinguishing agent and the driving gas are refilled, and the air tightness test is carried out one by one.

3) When the gas cylinder fire extinguisher is maintained, the gas cylinder should be released after the driving gas is released regardless of whether it is used or not, and the gas storage cylinder should be tested for hydrostatic testing, cleaning, drying, replacing the seals, filling the driving gas according to the regulations, and the air tightness test should be carried out one by one.

4) The correct operation methods and necessary safety protection measures should be taken in the process of fire extinguisher maintenance to ensure the safety of maintenance personnel, especially the steps of disassembly, hydrostatic test, filling of driving gas, and scrapping. When disassembling the fire extinguisher, a safe disassembly method should be adopted and necessary safety protection measures should be taken. The fire extinguisher head or valve should only be removed when it is confirmed that there is no pressure inside the fire extinguisher.

In order to prevent environmental pollution, the remaining fire extinguishing agent in the fire extinguisher should be poured into the corresponding waste storage tank for separate treatment before the hydrostatic test. When cleaning up the residual fire extinguishing agent in the fire extinguisher, it is necessary to prevent contamination by mixing different fire extinguishing agents.

1. Daily inspection.

1) Check whether the pressure is within the specified range.

2) Check whether the fuse pin is corroded, whether the rotation is flexible, and whether the lead seal is intact.

3) Whether the metal parts such as the fire extinguisher's pressure handle, valve body, and thimble are seriously damaged, deformed, or corroded.

4) Check whether the powder spraying pipe has aging and cobwebs.

5) Check whether the cylinder is deformed, whether there is rust at the bottom, and whether there are cobwebs.

6) Check whether the dry powder is agglomerate.

7) Check whether the fire extinguisher is within the effective use period. (4kg dry powder fire extinguisher for 10 years; 35kg dry powder fire extinguisher for 12 years; CO2 fire extinguisher for 12 years. ）

8) Whether the rotating parts on the frame of the trolley fire extinguisher are loose, and whether they are flexible and reliable when rotating.

9) Check whether the items marked on the nameplate are clear and complete.

2. Daily maintenance.

1) Frequently clean and finish the surface, powder spraying pipe and safety pin.

2) Lubricate and maintain the active parts regularly.

3) Shake the cylinder properly regularly to prevent the dry powder from agglomerating.

4) When the pressure is lower than the specified range or the dry powder is seriously agglomerate, it should be repaired or replaced.

5) Dry powder and carbon dioxide fire extinguishers must be tested for water pressure after five years of factory filling with fire extinguishing agent, and then every two years. When the scrapping life is reached, it should be replaced in time.

The extinguishing powder sprayed by the fire extinguisher covers the combustible material and forms an isolation layer that hinders combustion, and the powder will also decompose non-combustible gases when heated, reducing the oxygen content in the combustion area. At the same time, dry powder also has the effect of interrupting the combustion chain reaction. Therefore, the speed of extinguishing the fire is fast.

There are two types of dry chemical fire extinguishers: portable type and cart type. When using a portable dry powder fire extinguisher, first take the dry powder fire extinguisher to a distance of 3 4m from the fire area, pull out the safety pin, hold the nozzle with one hand to aim at the root of the flame, and hold the handle with the other hand to press down the pressure handle, then a large amount of dry powder will be sprayed out of the dry powder fire extinguisher. Aiming at the flame causes the dry powder air to sweep repeatedly from near and far until the fire is completely extinguished.

In case of multiple sporadic fires, extinguish one place, release the pressure handle, run to another place, and press the pressure handle again to continue to extinguish the fire. When using a cart-type dry chemical fire extinguisher, open the hose, hold the spray gun, unplug the safety pin at the bottle mouth, lift the switch, and aim the spray gun nozzle at the root of the flame to spray. Dry powder fire extinguishing is non-toxic and non-corrosive, and can be used to extinguish fires of burning liquids, valuable instruments, oils, and combustible gases, and the fire extinguishing effect is better.

Dry powder is non-conductive, and this fire extinguisher can be used to extinguish fires in live equipment. The dry powder fire extinguisher should be kept dry and sealed to prevent the dry powder from agglomerating when wet; Avoid sun exposure to prevent the carbon dioxide gas in the cylinder from expanding due to heat and leakage. Check whether the dry powder in the tank is agglomerated once every six months; Check whether the carbon dioxide cylinder is sufficient once every three months.

Dry chemical fire extinguishers are generally valid for four or five years.

After the fire extinguisher is used, first of all, remember to place it upside down, and if it continues to be used, send it to a professional place for replenishment or pressurization. If you don't want it, you may send it for processing. Generally, the place where fire-fighting equipment is sold will do.

After each use, the fire extinguisher must be sent to a repair unit that has obtained a repair permit (hereinafter referred to as the repair unit) for inspection, replacement of damaged parts, and a new filling of fire extinguishing agent and driving gas.

Fire extinguishers, after the end of the handover, or to the formal ** organization to deal with, do not deal with it privately, if you want to change the powder, but also to a professional organization to replace.

1. The position of the fire extinguisher should be kept dry and ventilated to prevent moisture, and the effect of sunlight exposure and strong radiant heat should be avoided, so as not to affect the normal use of the fire extinguisher.

2. The storage temperature of the fire extinguisher should be 4°C-45°C.

3. The fire extinguisher should be regularly inspected according to the requirements and inspection cycle specified by the manufacturer, and the inspection should be carried out by a trained person.

4. Once the fire extinguisher is opened, even if it does not spray much, it must be refilled according to the specified requirements. The refilling shall be carried out by the professional department according to the summing method specified by the manufacturer, and the type, weight and type and pressure of the fire extinguishing agent shall not be changed at will.

5. Before each refilling of the fire extinguisher, its main pressure parts, such as the head and cylinder, should be tested for hydraulic pressure according to the regulations, and only those who pass the fire extinguisher can continue to be used. The hydrostatic test is unqualified, and it is not allowed to be repaired by welding and other methods.

6. The fire extinguisher repaired by the maintenance department shall be approved by the fire supervision department, and the name of the maintenance unit and the date of maintenance shall be noted.

What are the types of fire extinguishers?

1. Dry powder fire extinguisher: The dry powder fire extinguisher is filled with dry powder fire extinguishing agent. Dry powder fire extinguishing agent is a dry and easy-to-flow fine powder used for fire extinguishing, which is composed of inorganic salts with fire extinguishing effect and a small amount of additives that are dried, crushed and mixed into fine solid powder.

Compressed carbon dioxide is used to blow out a dry powder (mainly containing sodium bicarbonate) to extinguish the fire.

2. Foam fire extinguisher: There are two containers in the foam fire extinguisher, which contain two liquids, which are aluminum sulfate and sodium bicarbonate solutions, and the two solutions do not contact each other and do not have any chemical reaction. When a foam fire extinguisher is needed, turn the fire extinguisher upside down and mix the two solutions together, which will produce a large amount of carbon dioxide gas.

3. Carbon dioxide fire extinguisher: the liquid carbon dioxide is stored in the bottle of the fire extinguisher, and when working, when the pressure handle of the bottle valve is pressed, the internal carbon dioxide fire extinguishing agent will be sprayed out from the siphon through the bottle valve to the nozzle, so that the concentration of oxygen in the combustion area will drop rapidly, and the flame will be suffocated and extinguished when the carbon dioxide reaches a sufficient concentration, and at the same time, because the liquid carbon dioxide will be rapidly vaporized, it will absorb a large amount of heat in a short time, so it will play a certain cooling role in the combustibles, and also help to extinguish the fire.