Adjusting the levels of filter life

Users often complain filter life is too short, there are three main reasons for this: First of filter material in the filter area per unit area is too small or too small dust capacity: Second, the pre-filter filtration efficiency is low : Third, the service life of the filter user expectations too high. 

For the first reason, the use of large area significantly extend the life of the filter, it is best to take into account in the design of this, after completion of the project to transform the filtration system in order to extend the life of the trouble. Many projects, user requirements as much as possible to reduce the air-conditioning system footprint, lower prices, or the user does not notice the vendor uses a small filter area cheap filters. Project acceptance filter air purifier can meet the requirements, but due to small size filter medium, long filter life will not. 

For the second reason, the pre-filter can be adjusted filtration efficiency profile in the dust pre-filter. For example, the end of the filter is H14. Use G3 + F7 pre-filter does not end when the life of the filter is l2 months, use the pre-G4 + FR filter after the end of the filter life extended. In the clean room, the end of high value high efficiency filter, and replace the filter of the risks and indirect costs will be high, and replace the pre-filter is not discontinued, so an experienced owner will attention and money spent on pre-filter on. 

For ten thousand and 100,000 clean workshop (non-uniform flow), the pre-filter can be used F8 filter (colorimetry 95%), so that the end of the life of the filter efficiency generally up to two years. For one hundred clean plant (uniform flow) pre-filter can be used F8 filter (assay 95%), so that the end of the life of the filter efficiency generally up to four years.