About Pool Pumps

Swimming pool pumps are an integral part of the water-filtration system. They are responsible for recirculating the water and trapping any small objects that may pollute the pool, such as hair, leaves and small bugs. Certain styles of pool pumps are also designed to enhance swimming when attached to a wave machine. Pool pump filtration devices are also used in hot tubs, Jacuzzis and customized spa equipment.

Significance

A pool pump works by pushing water through a small filtering system before returning it to the pool. The filter is usually made up of a brass wire-mesh material called graded sand, which can filter out objects from the water down to a size of 10 micrometers. Graded-sand filters last between five and seven years before needing to be replaced. Tightly packed paper filters are also commonly used with pool pumps.

Function

After the water moves through the graded-sand filter, it is run through a second filter to prevent any remaining pollutants from entering the interior of the pump. Larger pieces of debris can compromise the pumping mechanism. This second filter, often called a "hair and lint trap," needs to be emptied regularly.

Types

Swimming pool pumps can be installed above the water level and still work, making them self-priming units. Unlike flooded suction water pumps that need to be completely submerged, pool pumps require less than half of the mechanism to be submerged to work properly.

Effects

Pool pumps may require between 500 and 2,000 watts of electricity. They are typically controlled by electric timers and run between six and 12 hours during the summer months. A pump may be run for up to 24 hours continuously, though this is rarely done due to the expense. Many pumps have two operating speeds to keep costs low.

Considerations

While pool pumps are essential in preventing the water in the pool from becoming stagnant, they can't do the job alone. Sanitation chemicals and a proper pH balance are also necessary to keep a swimming pool in good condition, especially a public pool. Maintaining these chemicals, along with using a skimmer net to remove any large contaminants from the surface, help the pump ensure that the pool is safe and clean.