Common Causes and Solutions for Slurry Pump Not Delivering Liquid

• Cause

If the pump casing and suction line are not completely filled with liquid before startup, the pump cannot generate enough suction to draw slurry into the system.

• Solution

Ensure the pump is properly primed before starting. Fill the pump casing and suction line with liquid and remove any trapped air.

• Cause

Air leakage in the suction pipeline can significantly reduce the pump's ability to create suction, preventing slurry from entering the pump.

• Solution

Inspect all suction pipe joints, flanges, and seals. Tighten connections and replace damaged gaskets if necessary.

3.Suction Lift Too High

• Cause

If the vertical distance between the pump and the slurry surface exceeds the allowable suction lift, the pump may fail to draw slurry.

• Solution

Reduce the installation height of the pump or improve the suction conditions.

4.Blocked Suction Line or Intake

• Cause

Solid particles, debris, or sediment may block the suction pipe, preventing slurry from entering the pump.

• Solution

Stop the pump and inspect the suction line. Remove any blockage and ensure the pipeline is clear.

5. Wrong Direction of Rotation

• Cause

If the motor rotates in the wrong direction, the impeller cannot generate the required hydraulic energy to move the slurry.

• Solution

Check the rotation direction of the motor and ensure it matches the arrow indicated on the pump casing.

6. Excessive Air Entrapment in Slurry

• Cause

Air bubbles or vortex formation in the slurry tank may allow air to enter the pump, reducing pumping efficiency.

• Solution

Increase the submergence depth of the suction pipe or install anti-vortex baffles in the slurry tank.