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Pool pump overheating can be caused by:
* Low water level in the pool
The pump can not get enough water passing through it to keep it cool.
* Debris in the skimmer or pump baskets
Again low flow.
* Loose fittings into and out of the pump
* Loose pump lid or poor seal at the pump lid
bad gasket on pump lid.
Water in the pump gets to boiling temps when there is a lack of or low flow of water getting to the pump. The water simply boils away. Those high temps caused by friction begin to transfer to the pump housing and the PVC fittings into and out of the pump. That heat then shrinks the PVC because it has a low heat tolerance. The loose fittings allow air to enter the pump thus making the situation worse. Those loose and damaged fittings will then have to be removed and replaced. They can not be retightened because they are now smaller than tolerance allows. The heat also damages the pump seal and that too will have to be replaced.
Bronze pumps can also have the heat problem ~ damaged seal, damaged PVC fittings. If the system is plumbed in with copper you have a lesser chance of failure because the metal parts diffuse the heat buildup somewhat. It just takes longer. Some of the cheaper plastic pumps may have to be replaced too as their components will warp and shrink. k
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∙ 16y ago
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