Question 37General Subjects - Assistant Engineer

The correct answer is C) The bowl should be drained before the moisture level reaches the lower baffle. This is the correct answer because allowing the moisture level to reach the lower baffle can allow water to be drawn into the air system, potentially causing damage to pneumatic equipment. The proper criteria is to drain the filter/moisture separator bowl before the moisture level reaches this critical point, as specified in Coast Guard regulations and manufacturer recommendations. The other options are incorrect because: A) Draining daily without checking the moisture level is not necessary and can waste compressed air. B) Waiting until visible moisture appears is too late, as the moisture level may have already reached the lower baffle. D) Allowing the bowl to completely fill is also undesirable, as it increases the risk of water entering the air system.