Water is pulled through the skimmer and main drains in the swimming pool by the pool pump.
Inground swimming pool leak main drain.
The main drain is one of the hardest complicating factors for finding leaks in pools.
Chart the main drain.
A main drain circulates the pool s water by pulling water off the bottom of the pool and sending it to the filter.
The problem is that they can be very dangerous pieces of equipment in the pool and that many pool owners don t realize it.
The basic configuration of a swimming pool plumbing and filtration system is simple.
An inground swimming pool s main drain is located in the deep end of the pool.
The skimmer and main drain lines join into one that leads to the suction side of the pool pump.
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Understand pool plumbing basics to visualize what a pool tech might do to fix the leak.
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When the pool and the pool return pipes settle in the ground at different rates this almost always results in a leak where the return meets the pool wall.
An improperly functioning or broken drain can be an owner s worst nightmare because usually the pool must be completely drained and the concrete or plaster at the bottom must be destroyed in order to fix the leak.
The main drain is a 1 inch to 2 inch line leading from the bottom of the pool outside the pool shell to a trench about 24 inches below ground level.
During winter months or periods of non use most pool drains do not need to be plugged but in some cases plugging a main drain is required or recommended.
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This type of leak is a very common leak location.
The drain joins other pool lines from the skimmers and the return lines.
But locating them isn t actually the problem with swimming pool main drains.