Which of the following statements represents the proper criteria to decide when to drain a filter/moisture separator as used in a ship's service air system hose station?
• Purpose of a filter/moisture separator in an air system (protecting equipment and hoses from water carryover) • How the baffles and bowl are designed to work in a moisture separator • Risks of allowing moisture to get too high vs. draining too often
• Think about what happens to downstream equipment if the water level gets up to, or above, the lower baffle. • Consider whether it is practical and safe to wait until the bowl is full or to use a fixed time schedule like "daily." • Ask yourself: At what point does the moisture level begin to threaten carry-over into the air line, but before the separator loses its effectiveness?
• Identify which choice prevents water from being carried into the air hose by keeping the level below the operating baffle. • Eliminate any option that allows the bowl to fill completely, as that defeats the separator’s purpose. • Eliminate any option that relies only on time (e.g., daily) without checking actual moisture level in the bowl.
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