When a reservoir or gearbox breathes, air containing water vapor is ingested into the system. Temperature fluctuations will cause this water vapor to condense, which can speed up the oxidation of the fluid and lead to damage in the system. While inhaling, SDB desiccant air breathers first dry the air as it passes through the drying agent. The air then passes through a 3-micron air filter element to remove any solid contamination particles. As moisture is absorbed, the drying agent will gradually change from red to orange. When it is orange, replace the drying agent. If required, and optional visual indicator gives an indication of the status of the air breather. With the moisture absorved, the oxidation process can be decreased and the lifetime of the oil and machinery will be extended. SDB desiccant air breathers can also be refitted with a one-third layer of active carbon and a two-thirds layer of regular drying agent for vapor filtration.
