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How to determine whether the disposable integrated filter needs to be replaced?
How to determine whether the disposable integrated filter needs to be replaced?To determine whether the disposable integrated filter needs to be replaced, you can start from the following aspects:Observed pressure difference Use a differential pressure gauge: Most disposable integrated filters are equipped with a differential pressure gauge. When the pressure difference between the two ends of the filter reaches or exceeds about twice the initial pressure difference, it usually means that the filter has accumulated more dust, the filter resistance is increased, and it needs to be replaced. For example, the initial pressure difference is 20Pa, and when the pressure difference rises to about 40Pa, the filter should be replaced. No differential pressure gauge: If no differential pressure gauge is installed, you can indirectly judge by observing the running status of the fan. When the load of the fan increases significantly, such as the running sound becomes louder, the speed becomes slower, and the fault of the fan itself is eliminated, it is likely to be caused by the increased resistance of the filter, and the filter may need to be replaced at this time. Evaluate filtration effect Detection of air quality: The use of professional air quality detection equipment to detect the number of dust particles in the indoor air, microbial content, and other indicators. If the content of pollutants in the air is found to exceed the relevant standards or the requirements of the use environment, and other factors that may affect air quality have been excluded, it is likely that the filtration effect of the filter is reduced and needs to be replaced. Observe visible dust: In the filter outlet or use environment, observe whether there are obvious dust particles. If more dust can be seen blowing out, or more dust accumulation can be found in the surrounding environment, it indicates that the filtration capacity of the filter may have decreased, and it cannot effectively intercept dust, and it needs to be replaced in time. View the use time: According to the filter's instruction manual and actual use, estimate its use time. In general, in the normal use environment, if the manufacturer's recommended use period is reached, even if the pressure difference and filtration effect have not significantly changed, it is recommended to replace the filter to ensure the reliability of the filtration effect. As mentioned above, it is usually used for 3-12 months, which needs to be judged according to the actual situation. Check the appearance of the filter: Directly observe the appearance of the filter to see whether the filter material is damaged, deformed, or discolored. If the filter material is damaged, it will cause part of the air to pass directly without filtration, affecting the filtration effect, and it should be replaced immediately. If there is significant discoloration on the surface of the filter, especially if the color becomes very deep, it also indicates that it has adsorbed a lot of dust and may need to be replaced. |
