Many people may have a question about when to change the air filter cores. Here I will tell you some.
In the air filter maintenance, you should check the inside surface of the air filter paper filter color and contrast carefully. Used cores, contact the outer surface of the atmospheric side by dust, sedimentary color showed gray; While facing the inlet side of the surface should still present within the filter paper is ecru. If the dust removal of the filter core appearance, the filter can manifest themselves, the filter can continue to use. When filter outside surface after removing dust, the paper after themselves, or filter appeared no longer inside surface color hair and dark, the filter must change.
After knowing this article, are you learning for this clearly? By the way, I want to tell you that Chentai is an air filter paper manufacturer in China, which can provide products you need.
