The dry chemical powder change cycle of a dry powder fire extinguisher mainly depends on its use and storage state. The following is a detailed description of the dry powder fire extinguishing agent change cycle of dry powder fire extinguishers:
1.Dry powder fire extinguishers that have not been opened and refilled with powder
Under normal circumstances, dry powder extinguishers that have not been unsealed and have not been supplemented with powder are recommended to replace the dry powder every 2 years. The start time is usually based on the delivery time.
2.Dry powder extinguishers that have been replenished with powder
If the dry powder extinguisher has been previously replenished with powder, the powder change cycle is usually shortened. In this case, it is recommended to replace the dry powder once a year, starting with the time of the last powder supplement.
3.Special cases
In the process of using the dry powder fire extinguisher, if the dry powder is found to be caked, it must be replaced immediately to avoid affecting the use effect.
Regular check-ups are also very important. Check whether the dry powder is caked at least twice a year, and replace it in time if there is caking.
In addition to the powder change cycle mentioned above, the following are some suggestions for the
4.maintenance of dry powder fire extinguishers
Check the place where the fire extinguisher is placed: Ensure that the ambient temperature is between -10 ° C and +55 ° C, and avoid exposure to sunlight, close to heat sources, or violent vibration.
5.Appearance inspection
Often check whether the fire extinguisher seal is complete, whether the pressure gauge pointer is in the green area, whether the anti-corrosion layer is intact, and whether the visible parts are complete, without loosening, deformation, rust and damage.
6.Regular inspection
Remove the gas cylinder every six months to check the weight of carbon dioxide in the bottle by weighing method, and check the powder pipe, intake pipe, nozzle, nozzle, spray gun and other parts of the dry powder blockage or rupture once a year.
In summary, the powder change cycle of dry powder fire extinguishers is mainly determined according to their use and storage status. In order to ensure its effectiveness and safety, it is recommended to schedule the powder changing time according to the manufacturer's instructions and the results of regular inspections.
