What is required for most pumps before they can start operating effectively?

For most pumps to operate effectively, priming is essential. Priming involves filling the pump and its suction line with liquid to prevent it from running dry. When a pump is not primed, there is a risk of damaging the pump due to the absence of fluid, which acts as lubrication and cooling. This is particularly important for centrifugal pumps that rely on liquid to create the suction necessary to draw fluid into the pump. Without sufficient liquid in the pump, it cannot generate the pressure required to move the water through the system, resulting in cavitation or air pockets that can impair performance and potentially harm the pump.

While electrical connection, reservoir filling, and cooling may be necessary for the overall operation or efficiency of a pump, they do not directly address the fundamental requirement of getting the pump itself ready to move fluid. Priming must occur first in the sequence of operations for proper pump functionality.