If the pump fails to prime, which of the following does not need to be checked?

When a pump fails to prime, it is essential to check several factors that could be causing the issue. The water level in the pool is critical, as insufficient water can prevent the skimmer from drawing in water. Checking the skimmer basket is also necessary because an obstruction in the basket can block water flow to the pump. Additionally, inspecting the piping for blockages is important since any obstructions can impede water movement to the pump, preventing it from priming.

In contrast, the filter system pressure does not need to be checked as part of the initial troubleshooting for a pump that is failing to prime. The filter's pressure reading is more relevant when assessing filter performance rather than the pump's ability to draw water. Therefore, while the other options directly influence the pump's priming ability, the filter system pressure does not play a role in this particular situation. Understanding the purpose of each component in the pool system helps clarify why checking the filter system pressure is unnecessary when addressing a pump priming issue.