What are possible problems if my centrifugal is not pumping any water?
1. Priming-casing and suction pipe not completely filled with liquid.
2. Speed too low.
3. Discharge head too high.
4. Suction lift too high. Suction pipe may be too small or long, causing excessive friction loss.
5. Impeller completely plugged.
6. Intake strainer or suction pipe completely plugged.
7. Wrong rotation direction.
8. Air pocket in suction line.
9. Air leaks in suction line and/or stuffing box (shaft seal).
2. Speed too low.
3. Discharge head too high.
4. Suction lift too high. Suction pipe may be too small or long, causing excessive friction loss.
5. Impeller completely plugged.
6. Intake strainer or suction pipe completely plugged.
7. Wrong rotation direction.
8. Air pocket in suction line.
9. Air leaks in suction line and/or stuffing box (shaft seal).