During the daily operation of purification systems, maintenance personnel often face confusion regarding the timing of air filter replacements. Replacing them too early increases costs, while replacing them too late can affect cleanliness and even damage equipment. KLC provides a scientific reference guide for replacements.
Recommended Replacement Cycles for Different Levels of Filters
KLC PRE-Filters (G1-G4):
Recommended replacement cycle is 1-3 months. Their function is to intercept large dust particles. Since they are low-cost and have limited dust-holding capacity, frequent replacement can effectively extend the lifespan of the more expensive KLC medium and high-efficiency filters.
KLC Medium Filters (F5-F9):
Recommended replacement cycle is 3-6 months. They mainly protect the high-efficiency filters by preventing fine dust from accumulating on high-efficiency filter media.
KLC High-Efficiency Filters (H13-U16):
Recommended replacement cycle is 2-3 years. Provided that the primary and medium-efficiency filters are properly maintained, the lifespan of KLC high-efficiency filters can reach 3 years or even longer.
Three Scientific Standards for Determining Replacement
In addition to time, KLC recommends judging replacement based on the following parameters: Differential Pressure (Core Standard): Filters must be replaced when operating resistance reaches twice the initial resistance or reaches the set final resistance value. It is recommended to install a differential pressure gauge in the system. Airflow Reduction: When the fan speed is set to maximum, but the air outlet velocity still fails to meet design requirements (e.g., below 0.3 m/s). Visual Inspection: When the filter media shows damage, discoloration, mold spots, or severe dust accumulation.
Methods to Extend Filter Lifespan
Regularly clean KLC PRE-Filters: If they are the washable type, it is recommended not to clean them more than three times.
Check for Seal Integrity: Ensure that the KLC filter installation frame is leak-free to prevent bypass of dirty air into subsequent stages.
When replacing KLC high-efficiency filters, it must be done with the cleanroom system stopped. After replacement, a PAO leak test must be conducted to ensure proper installation and sealing. As a leading company in the air purification industry, KLC always recommends that users establish a scientific maintenance record and use 100% factory-tested original KLC filter media, ensuring the long-term compliance of clean spaces.
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