To this end. "220V Cooling Fan" in a dust manufacturers also style all their own. For example, some of the market vendors "Dust Network" fan mounted on the outside, but must be cleaned regularly, otherwise blocking cold air filter will cause unnecessary trouble cooling. There are a number of new products introduced so-called dust-proof design, the fouling of the shaft near to the closed state, while optimizing the "220V Cooling Fan" into the wind direction, so that the dust nowhere to hide. Can significantly increase fan life, to use more at ease. Cooling fan on the dust, long-term use of air flow through the various parts of the city covered with a thick layer of dust leading to poor Merry Increased blade weight. Reduce speed or increase the electrical load. Even cause "220V Cooling Fan" damage .