The refrigeration unit editor discusses the normal operation of air filters in refrigerated containers. This prevents premature engine wear (abnormal wear) and maintains optimal operating condition.

The preventative protection provided by air filters is not an exaggeration. Before the intake air mixes with fuel, the air filter's function is to filter out dust, carbon, some water vapor, and other impurities, ensuring clean air enters the cylinders. Theoretically, approximately 10,000 units of clean air are needed for every unit volume of fuel burned. Generally, refrigeration unit manufacturers recommend a normal maintenance replacement cycle of 48,000 km, with routine checks every 24,000 km per month; the recommended maintenance replacement cycle is 24,000 km.

The atmosphere contains three basic particulate pollutants of different densities: dust, residue, and carbon particles. Dust levels are lower on open highways than in rural areas and construction zones. In areas with high dust concentrations, such as construction sites and sandstorm areas, air filters need to be inspected and replaced more frequently. In areas with highways and traffic congestion, the carbon content in the air is significantly higher due to the concentration of emissions from refrigerated trucks. When inspecting a dry air purifier, one should carefully examine the deep folds inside. Sometimes, the outside of the purifier may appear clean, but the inside may be very dirty, requiring immediate replacement.