When should the alignment between the pump and the motor be checked?

The alignment between the pump and the motor should be checked at the coupling during routine inspections and maintenance. This is critical because proper alignment ensures efficient operation, reduces wear and tear on both the pump and motor, and minimizes the risk of vibrations that can lead to mechanical failure. When the pump and motor are misaligned, it can cause excessive strain, which ultimately affects their performance and longevity. Checking the alignment at the coupling allows for the most direct and effective assessment of how well the two components work together, ensuring that any adjustments can be made to maintain optimal operation.

While other options might seem relevant in certain contexts, they do not specifically address the best practice of checking alignment at the coupling as a proactive measure to prevent issues during operation.