Clean Room Air Filter Replacement
The replacement of Clean Room Air Filter Replacement depends on many factors, including the type of filter, the use environment, the dust concentration in the air, and the rated initial resistance of the filter. The replacement guidelines for common types of air filters are as follows.
1. It is recommended to clean the nylon filter at the fresh air inlet once a week, mainly to check whether the filter has obvious large blockage or damage, and clean or replace it in time.
2. Coarse-effect filters are usually replaced every 1~2 months, with a rated initial resistance of about 50Pa. The replacement mark is: when the resistance exceeds 2 times the rated initial resistance (2 times the design or operation initial resistance), replace it.
3. Medium-efficiency filters, the replacement cycle is about 2~4 months, and the rated initial resistance is about 80Pa. The replacement standard is: when the resistance exceeds 2 times the rated initial resistance (2 times the design or operation initial resistance), replace it.
4. Sub-high-efficiency filters, the service life can reach more than 1 year, and the rated initial resistance is about 100Pa. The replacement standard is: when the resistance exceeds 2 times the rated initial resistance (2 times the design or operation initial resistance), it is replaced.
5. For high-efficiency filters, the replacement cycle is usually more than 3 years, and the rated initial resistance is about 190Pa. The replacement standard is: when the resistance exceeds 2 times the rated initial resistance (2 times the design or operation initial resistance), it is replaced.
It should be noted that these replacement cycles are only general guidelines, and the actual replacement time may vary depending on the specific conditions of use. Timely cleaning or replacement of the filter and the primary filter can protect the subsequent high-grade filters such as the medium efficiency and sub-high efficiency filters, and extend their service life. For example, if the dust concentration in the ambient air where the filter is located is high, it may need to be replaced more frequently. At the same time, regular monitoring of the resistance change of the filter is also an important method to determine the timing of replacement. In the case of no damage to the filter, the service life is generally determined by the resistance. If the pollutant concentration in the airflow of the air outlet exceeds the predetermined value, the filter also needs to be replaced immediately.
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