What aspects should be noted when selecting, installing, and maintaining centrifugal pumps correctly

Dry operation

Running the pump without liquid inside can cause friction and overheating, damaging seals and bearings.

cavitation

When the liquid pressure is lower than the saturated vapor pressure, bubbles are generated, which rupture and impact the impeller and pump casing, causing damage.

overload

Operating beyond the designed flow rate or head, increasing the motor load, may result in motor burnout or pump body damage.

Foreign objects entering

Solid particles or foreign objects entering the pump may block or damage the impeller and pump casing.

Vibration and misalignment

Vibration and misalignment caused by improper installation or unstable foundation can accelerate bearing and seal wear.

Corrosion and wear

When transporting corrosive or particulate liquids, the internal components of the pump are prone to corrosion and wear, which shortens its service life.

The temperature is too high

High temperature operation can damage seals and bearings, affecting the normal operation of the pump.

Frequent start stop

Frequent starting and stopping can increase mechanical stress, leading to fatigue damage.

Reverse rotation

Incorrect motor wiring can cause the pump to reverse, which may damage the impeller and seals.

Inappropriate liquid

Transporting liquids that are incompatible with the pump material can cause corrosion or chemical reactions, damaging the pump body.

So we need to choose a suitable pump to avoid overloading the motor. The installation of the base on the pump station requires a cement foundation. If it is directly placed on the ground, it may cause concentricity deviation and damage to the bearings and shafts. Install a check valve at the outlet, otherwise water hammer may occur. Do not place the pump too high away from the liquid level, and pay attention to the suction height of the pump, otherwise cavitation may occur. Do not frequently start and stop the pump, as it may cause damage to the mechanical seal.

preventive measure

Ensure that the pump is filled with liquid before starting

Regularly inspect seals and bearings

Install filters and protective devices

Ensure correct installation and alignment

Choose the appropriate pump material and model

Avoid frequent start stop and overload operation

Regular maintenance and inspection

Through these measures, the service life of centrifugal pumps can be effectively extended.