Florida Wastewater Practice Test

What might be a consequence of using too much lubricant on pump bearings?

1. Increased efficiency

2. Cooler operation

3. Overheating

4. Extended equipment life

The correct answer is: Overheating

Using too much lubricant on pump bearings can lead to overheating, which is a significant consequence to consider. While lubrication is essential for reducing friction and wear, excessive lubricant can create resistance and cause the lubricant itself to generate heat during operation. This heat can raise the temperature of the bearings beyond their optimal operating range, potentially leading to thermal breakdown of the lubricant and damage to the bearings themselves. In contrast, options such as increased efficiency or cooler operation are typically associated with the proper amount of lubricant, as they help reduce friction and dissipate heat. Extended equipment life is also more likely when lubrication is applied correctly and maintained at appropriate levels. However, when lubrication exceeds recommended levels, it disrupts the intended lubrication balance, ultimately resulting in overheating and potentially serious mechanical failures.