During the routine inspection of an operating centrifugal lube oil purifier, you notice oil discharging through the water discharge port. Which of the following actions should be taken?

Correct Answer: Option A — Add water to seal the bowl.

Severe mechanical vibration in a high-speed centrifugal purifier signals dynamic imbalance, often caused by heavy sludge maldistribution or a bent spindle. Operating under such conditions risks catastrophic structural failure, necessitating an immediate emergency shutdown.