WHAT IS A SWIMMING POOL PUMP AND HOW DOES IT WORK?
A swimming pool pump is made up of two parts: the motor itself and the front-end of the pump, called the ‘wet-end”, which actually moves the pool water.
The motor spins a shaft and mounted on the end of that shaft is an impeller, which is enclosed in a housing called a volute. As the shaft spins the impeller, water is drawn through the inlet port into the center of the impeller.
From there the pool water is then forced through a series of slotted vanes in the impeller eventually striking a diffuser, which direct the flow through the outlet port.
To keep the electric motor isolated from the flow of the water and to prevent leaks, the entire pump assembly is made watertight by a series of gaskets, O-rings and seals.
A swimming pool pump has a motor that is rated in horsepower, such as 3/4, 1- and 2-horsepower.For years swimming pool builders have thought bigger is better. But that proved to be not true.
Over-sizing the pump is a big problem. First, you can only push so much water through a swimming pool’s plumbing pipes. A great problem is the amount of electricity being consumed by bigger horsepower pumps.
That’s why we’re seeing laws in some states about the size of the swimming pool pump that can be placed in a swimming pool. We now believe that smaller horsepower pool pumps will actually do a better job of moving pool water and better filter the pool water.