Cabinet air conditioning

With the speeding up of industrialization process and all kinds of equipment automation degree rise, like the servo amplifier, PLC, frequency converter and other precision, complex, electronics, electrical equipment is more and more widely used. These devices work will produce a lot of heat, and is more sensitive to high temperature and itself, control cabinet degrees higher than 40 ℃ for a long time, will affect the stability of the control equipment and longevity. Are typically installed on the ark of the solution is to control the cooling fan implementation, but the fan is working, the outside of the dust, ?