-Pump-Co.,-Ltd..webp "FEGNQIU CRANE(ZHEJIANG) PUMP CO.,LTD.")
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Check the chart from time to time. It may offer you some solutions to the troubles during operation and maintenance, thus to save your time and money.
| Symptom | Possible causes | Remedies |
Pump operates but delivers little, or no water | 1. Debris caught in impeller, discharge | 1. Remove, clean and check for tightness |
| 2. Water level too low, pump reaches out of water | 2. Adjust pump to a new position | |
| 3. Motor does not run or does not run at full speed | 3. Check the voltage of the power, the position of the starter switch | |
| 4. Rotates in a wrong direction | 4. Interchange two leads at the starter | |
| 5. Impeller clogged or worn | 5. Clean the debris or replace the impeller | |
| Motor unit overheats | 1. Too low line voltage | 1. Check the voltage or contact power company |
| 2. Wiring size too small | 2. Replace it | |
| 3. Work under low head, large volume conditions | 3. Adjust to rated head | |
| 4. Shaft worn out or clogged | 4. Replace or mobilize it | |
| 5. Seal broken or leaking | 5. Replace the seal and dry the motor | |
| Pump operates noisily or vibrates excessively | 1. Shaft bent | 1. Straighten the shaft |
| 2. Bearing worn | 2. Replace the bearing | |
| 3. Joint bolt loose | 3. Tighten the bolt | |
| Pump draws too much amperage | 1. Pump operates at lower head than that specified | 1. Adjust the pump to its specified head |
| 2. Motor operates with less than the required voltage | 2. Check the voltage or contact power company |