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A malfunction in the air breather of a reservoir can lead to the buildup of high pressure within the reservoir. The air breather's primary function is to allow air to enter and exit the reservoir as fluid levels change, preventing a vacuum and enabling proper fluid movement. If the air breather is obstructed or fails to function correctly, air cannot enter the reservoir when the fluid is drawn out or does not vent properly when fluid expands due to temperature changes. This lack of balance can create excessive pressure, which may lead to leaks, ruptures, or damage to the reservoir and associated systems.
In contrast, increased fluid flow, air contamination, or decreased temperature are not direct consequences of a malfunctioning air breather. Increased fluid flow typically requires a properly functioning system to accommodate the movement of fluid, while air contamination refers to the presence of unwanted air particles in the fluid, which is not addressed by the air breather's primarily mechanical function. Decreased temperature of the fluid is also unrelated to the air management function that the breather provides; temperature changes are influenced more by external factors and the nature of the fluid rather than air pressure within the reservoir.