What is the function of an air-oil separator in a pneumatic deicing system?

The function of an air-oil separator in a pneumatic deicing system is primarily to prevent rubber boot deterioration from oil. In these systems, air is used for deicing, and the compressed air can sometimes carry oil from the compressor. If this oil mixes with the air that is directed to the deicing boots, it can lead to the degradation of the rubber material, causing it to crack or deteriorate prematurely. By utilizing an air-oil separator, the system effectively removes oil from the air before it reaches the boots, thus preserving their structural integrity and ensuring that the deicing system functions properly over time.

While some options may suggest enhancing the deicing process, collecting moisture, or cooling the boots, these do not accurately reflect the primary role of an air-oil separator, which is predominantly focused on protecting the integrity of the deicing boots from the harmful effects of oil contamination.