Refrigeration Operator Practice Test 2025 - Free Refrigeration Operator Practice Questions and Study Guide

The primary purpose of a strainer on a centrifugal pump is to protect the impeller. Strainers are designed to catch and remove debris or solid particles from the liquid that enters the pump. If this debris were to pass through, it could cause damage to the impeller and other internal components of the pump. By filtering out these contaminants, a strainer helps maintain the integrity of the pump's mechanical parts, ensuring reliable operation and prolonging the lifespan of the equipment.

While increasing flow rate, reducing noise, and enhancing energy efficiency are important considerations in pump operation, they are not the primary function of a strainer. The strainer's main role is focused on safeguarding the internal components from potential harm caused by foreign objects in the fluid being pumped.