Question 447Motor Plants - Assistant Engineer
70% to passWhile operating the fuel oil centrifuge shown in the illustration, the bowl fails to open for sludge ejection. The probable cause is that_______________. Illustration MO-0012
Aone or more of the sludge ports is partially clogged
Bthe operating water pressure is too high
Cthe bowl disk set is clogged
Dthe seal ring on the operating slide is defective
AI Explanation
The correct answer is D) the seal ring on the operating slide is defective. The seal ring on the operating slide is responsible for maintaining the proper pressure within the centrifuge bowl during operation. If this seal ring is defective, it can cause a loss of pressure, preventing the bowl from opening properly for sludge ejection. This is the most likely cause of the issue described in the question. The other answer choices are incorrect because they do not directly address the issue with the seal ring. Clogged sludge ports (A) or a clogged bowl disk set (C) would not necessarily prevent the bowl from opening, and high operating water pressure (B) is not the primary cause of the problem described.
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