The shell of the swimming pool water pump is generally cast iron, which is prone to crack with the mechanical force or thermal stress. When the pump is impacted by cavitations during operation or the water in the pump casing is not released in winter and is frozen, it is also easy to rupture. If the damage is severe and cannot be repaired, the pump casing should be replaced with a new one. However, pool pump suppliers will offer shells of great quality.

The pump shaft is generally made of carbon steel, but it is also easily damaged due to manufacturing quality, usage or installation. The pump shaft may suffer from cracks, bends, shaft neckwear, thread damage, etc., and fracture accidents may also occur. If the damage is severe and cannot be repaired, the shaft should be replaced with a new one.

The impeller is an important part of the swimming pool water pump, which is made of cast iron. It is also vulnerable to damage due to manufacturing quality and usage. The impeller may have cracks and holes. What’s more, perforations are formed on the surface due to cavitations, and the blades will become thinner due to long-term erosion, and even be broken by debris. Some defects can be repaired, while others cannot. That is, the impeller should be replaced with a new one.

The bearing bush is made of copper-tin alloy and has very poor wear resistance. For pool filter pump, it is one of the most easily worn and burnt parts. The bearing bush can generally be repaired or replaced with a new one. Rolling bearings generally have an average service life of 5000 hours, but improper installation, long using time, or poor maintenance can also lead to destruction. Rolling bearings, except for individual parts which can be replaced with new ones, generally require the replacement of integral parts.

The mouth ring is also called a leakage reduction or wear reduction ring. It is one of the most easily worn parts of the pool filter pump. After it is worn out, it can be repaired or replaced with a new one. When replaced with a new leakage-reducing ring, its inner diameter should be configured according to the outer diameter of the impeller inlet. After a long time, the packing will become hard and lose its elasticity, which will cause the swimming pool water pump to leak air and water. Generally, a new packing should be replaced.

The oil seal is a rubber product, which is easy to wear and age. Generally, it must be replaced with a new one.

As long as you keep what is mentioned above in mind, you are able to run the swimming pool pump well.