How often should the air filter in the air shower room be replaced?

How often do the air filters in the air shower room be replaced? I believe that there are not many people who can clearly explain this issue. According to experts in the air shower room, 90% of the users who currently use the air shower room say It’s not clear how often the air filter in the air shower should be replaced or maintained. Maybe some people will go to Baidu to search for "air filter life" or "how long to replace the high efficiency air filter", but search Most of the contents are high-efficiency filters used at the end of the clean room, and there will be a big difference for the relatively special purification equipment of the air shower room.
    Of course, you might also say that the high efficiency filter in the clean room is the most important thing. Whether it is replaced on time will not only affect the cleanliness of the clean room, but also affect the quality and safety of the product, and the air in the air shower room Even if the filter is not replaced, it will not affect the cleanliness of the clean room. If you really think so, you are wrong. For a clean room where the clean room itself is not high, the air shower may not play a role. If you do not pay attention to it, it will not have much effect on the clean room.
    However, if you are in a clean room with relatively high cleanliness requirements, such as a clean room of Class 1,000, Class 100, or even Class 10, the role of the air shower will be decisive. When you are doing everything in the internal clean room In a clean job, the air shower is your last clean barrier and the most important one. Therefore, it is particularly important to understand how often the air filter in the air shower should be replaced.
So how long does it take to replace the air filter in the air shower?
    1 The air filters used in the air shower mainly include primary air filters and high-efficiency air filters. Generally, the efficiency of primary filters is between (G1-G4), which is obtained by analyzing the data held by users of the air shower , If for the average user, work 8 hours per day, the primary filter should be maintained once in about 6 months. First of all, the primary filter can be cleaned, but the number of cleanings should not exceed 3; In other words, it is necessary to completely replace it in 2 years.
    2 The high-efficiency filter inside the air shower room generally uses H13 (99.99%). According to the management of an ordinary clean room, it usually needs to be replaced in 1-2 years, but the high-efficiency filter in the air shower room is different. If you use the same conditions as above **, the high-efficiency filter in the air shower can generally be used for 2 years or longer, and it will take longer, provided that the usual maintenance conditions, including frequent cleaning of the air shower, Don't have dust etc.
    3 Of course, the above replacement time is based on some data in the industry, and may not be applicable to all users. If you want to recommend a simpler method, it is judged according to the blowing effect of the air shower room. If the air shower room is significantly reduced Small, it is also used as one of the basis for maintenance or replacement of air filters.