Oilers/Plant Tenders (HHC) Civil Service Practice Exam

In oiling systems, what is the purpose of strainers?

1. To increase pressure

2. To clarify fuel

3. To filter out impurities

4. To reduce viscosity

The correct answer is: To filter out impurities

Strainers play a crucial role in oiling systems by filtering out impurities. Their primary function is to remove solid particles and contaminants from the oil before it circulates through the system. This helps ensure that only clean oil reaches the machinery and components, thereby preventing wear, damage, and malfunctions that could arise from dirt or debris. By maintaining a clean oil supply, strainers contribute to the overall efficiency and longevity of the equipment. While clarification of fuel or other functions might seem relevant, the core purpose of strainers is distinctly focused on filtration. They are instrumental in maintaining the integrity of the oiling process, which directly affects the performance and reliability of the system.