Reason and solution:
1. The direction of rotation is not; the elimination of measures: check the direction of rotation.
2. Rotating parts seizure; elimination measures: check their internal components and wear gap is normal.
3. The speed is too high; the elimination measures: check the motor winding voltage or the transmission to the turbine's steam pressure.
4. Head is lower than the rated value. Too much liquid; the elimination of measures: to consult manufacturers. Install throttle valve, cutting impeller.
5. Axis bending; elimination of measures: straightening shaft or replaced as required.
6. Impeller damage; elimination measures: check the impeller, according to the requirements of the replacement.
7. The stuffing is not correct filler in the insufficient, is not properly inserted or run, packing too tight); the elimination of measures: check the stuffing, reload the stuffing box.
8. Liquid gravity is too large; elimination measures: check the specific gravity and viscosity.
9. Bearing lubrication is not correct or bearing wear; elimination measures: check and replace according to the requirements.
10. The running clearance between the wear ring is not correct; the elimination measures: check whether the gap is correct. Replace the pump casing or impeller wear ring as required.
