How Pool Pumps Work

Outdoor poolA pool pump is the core of a pool system and it is vital to know how it works so that if any problems in the future arise you might know what to do to fix it.

On the top of the pump is a lid that provides access to the inside of the pump for cleaning. This is made easy so that you don’t have to take the whole system apart in order to clean it.  You also have a direct access to the basket which is where most of the dirt will collect. This basket also helps prevent large debris from entering the motor and causing it to lock up or burn up from not being able to work correctly. Without the basket in place the machine itself could stop working in a short time because of how much debris actually enters the pool.

The diffuser brings water into the pump via the impeller but the only moving part is in fact the impeller. The motor is simply there just to make sure that the impeller is moving. The motor on the pump does not provide power to anything else but the impeller. If the motor stops working or the impeller stops moving then both have to be replaced.

Water is moved through the intake port by the sheer force of the impeller . The water hits the basket before it moves anywhere else in the machine so that it can collect any harmful debris.  The water is then channeled through the diffuser by having a blocked off funneling system that is connected close by the basket so that there’s little resistance when the water itself goes into the pump.

After it is sucked into the diffuser it then goes into the center of the impeller. The funnel makes sure that all of the water goes directly to this center before it goes anywhere else. The rotation of the impeller creates a high pressure. This is where you get the pressure reading in the pressure gauge to measure the amount of psi the machine is producing.

This high pressure is also how it pulls it through the input ports of the impeller to the output ports of the impeller. As the impeller rotates the water is thrown through the slots that are placed around the impeller. The water is then pushed through these slots on the diffuser and moved upwards. However this discharge port can also be found on the side of your pump.

Their are four main gaskets on a pool pump, the first being the strainer gasket. The seal sits directly about the basket and on the lids leading to the strainer basket. This seal is made of rubber and makes sure that none of the water gets out because of the water pressure. The next one is the diffuser gasket which is located on the rim of the diffuser which prevents water from coming back into the strainer. The third seal is the shaft seal which is located on the other side of the impeller that the water comes in from preventing it from getting into the motor. The last seal is the housing seal which prevents any water from getting out.

This article about swimming pool pumps is written by Warm Springs Pool and Spa Repairs.

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