
Troubleshooting
Screw Press Overload / High Torque
Drive torque high or overload trips
The drive is running near its torque limit or tripping on overload. High torque protects the machine but stops dewatering, so the cause — usually a too-dense plug, blinding or wear — must be found quickly.
The symptom
The drive is running near its torque limit or tripping on overload. High torque protects the machine but stops dewatering, so the cause — usually a too-dense plug, blinding or wear — must be found quickly.
Causes and corrective actions
| Possible cause | Corrective action |
|---|---|
| Back pressure too high | Reduce back pressure to lower the plug resistance. |
| Feed rate above capacity | Reduce feed to within rated loading. |
| Screen blinding increasing drag | Deep clean the screen. |
| Foreign object or hard debris jammed | Stop, isolate and remove the obstruction; improve upstream screening. |

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Three-Screw Dewatering Machine
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