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How to determine whether the filter of the single double-air shower needs to be replaced?
How to determine whether the filter of the single double-air shower needs to be replaced?Primary filterObserve the appearance: When it is found that the surface of the primary filter is covered with dust, the color is significantly darker, and it is still difficult to restore to a relatively clean state after several cleaning, it indicates that the filtration capacity of the filter has been greatly reduced and may need to be replaced. Feel the ventilation resistance: when the air shower is running, if the air inlet speed is felt to slow down, or the fan running sound becomes louder, it may be the primary effect filter is blocked, the ventilation resistance is increased, and it needs to be replaced at this time. High-efficiency filter Professional instrument testing: Use a professional dust particle counter to detect the cleanliness of the air blown out of the air shower room. If the test results show that the number of dust particles in the air exceeds the cleanliness standard of the air shower design, and it is determined that it is not caused by other reasons (such as the poor seal of the high-efficiency filter, etc.), it means that the high-efficiency filter may need to be replaced. Estimated use time: combined with the frequency of use of a single double air shower and the degree of environmental cleanliness, the service life of the HEPA filter is usually 1-2 years. If the use time is close to or exceeds this range, even if the cleanliness is temporarily tested, it should be paid close attention to and prepared for replacement in advance. Observe the wind situation: pay attention to whether the wind blowing out of the air shower is uniform, if the local wind is found abnormal, such as the wind in a certain area is significantly weakened, it may be the local blockage of the high-efficiency filter, need to further check whether it needs to be replaced. |
