How to determine if the air filter in the dust-free workshop needs to be replaced?
Dec 26,2023
The customer who uses the clean workshop for the first time will generally ask, what if the air filter used in my clean workshop is dirty? Can the air filter be washed? How often should the air filter be changed if it needs to be replaced? About the air filter replacement of this series of problems is actually very simple, it is recommended that you can judge from the following points
1, first look at the primary filter (pre-filtration), we can observe the surface of the air filter filter cotton, whether it has a large amount of dust (dust and even caking in a humid environment), hand on the surface of the filter cotton to feel the strength of the suction (the caked filter is basically no suction feeling) at this time, the air filter should be replaced. Generally, the initial effect of using 3-5 months is basically to purchase a new filter replacement (the initial effect of the dragon skeleton can be gently slapped on the surface of the dust and then cleaned with an air gun, and then can continue to use 1-2 times, water washing is not recommended)
2, medium effect filter (aluminum frame bag type medium effect/aluminum frame dragon skeleton medium effect/double mesh folding medium effect). Just look at the appearance of dust accumulation can determine whether it needs to be replaced, the general intermediate filter wind speed is smaller than the primary filter, the hand is not good to feel the airflow. In actual maintenance, the workshop supervisor is more willing to replace the primary/medium efficiency filter together, so as not to waste or save the trouble of frequent entry into the cabinet (Note: if the air dust content of the fresh air collected in the cabinet is particularly large, the middle effect can be protected by replacing the primary effect, after all, the cost of the middle effect is slightly higher than the initial effect, and the frequency cycle of replacement can generally be replaced 2 times according to the initial effect corresponding to the middle effect replacement 1 time)
3, high efficiency filter, generally installed in the clean room ceiling air outlet directly against the dust-free workshop air supply to ensure the positive pressure of the workshop at the same time to ensure cleanliness, belongs to the terminal filter (whether it is aluminum frame without partition high efficiency or wood frame with partition high efficiency are disposable consumables can not be cleaned), experienced workshop supervisor will stick a note at the air outlet, Through the paper, you can know whether there is wind to the clean workshop (the paper is still indicating that the air volume is small or there is no wind, and the cleanliness of the workshop cannot be guaranteed at this time). The workshop equipped with a differential pressure meter can also determine whether the filter needs to be replaced according to the differential pressure meter display. Enterprises with good conditions will buy particle counters and determine whether high efficiency filters need to be replaced by regularly using particle counters to measure the cleanliness of the workshop; Generally, high efficiency filters need to be replaced for 6-8 months, and enterprises in the peak season of the year can purchase filters in advance to replace them in the cycle of the May 11 holiday. Finally, warm tips: If you do not have a special workshop maintenance personnel, you can also find a small edition of me to help you replace the filter, the installation fee is absolutely preferential, and the workshop cleanliness testing service is donated after installation;
4, the filter inside the air shower, almost all companies are not changed for life, the original filter with the air shower until retirement. This has almost no effect on the cleanliness of the clean room, but if the environment is wet, the filter will accumulate bacteria or odor, and the staff will blow once a day after going to work, it is not good, it is recommended to change the filter once a year! It's only a hundred bucks, after all
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