Sep.26.2025
In the dynamic field of industrial automation, the FLE electric actuator stands out for its role in enhancing system stability and reliability. This article serves as a comprehensive guide, detailing the process from pre-installation checks to the commissioning of the FLE electric actuator and valve. By adhering to the steps outlined, technicians can guarantee precise installation, thereby sidestepping common pitfalls and operational hiccups. The included troubleshooting table further empowers users to swiftly identify and address potential issues, safeguarding the efficiency and dependability of their equipment.
Manually turn the valve to check that there is no abnormality and make the valve stay on the fully closed position.
Fix the bracket on the valve.
Place one end of the coupling on the valve mandrel.
Use the handle to drive the electric actuator to the fully closed position (the pointer just points SHUT with scale 0) and insert the output shaft into the coupling’s square hole.
Fasten the bolts connecting the bracket to the electric actuator and the valve body.
Use the handle to drive the actuator to run a whole process to confirm that its running is stable without being eccentric or skew, and check whether the valve can be fully closed or open within the actuator’s opening indication range.
Note: Don’t be too violent, which may result in the actuator’s damages caused by overtravel running.
For users whose bracket and coupling are self–provided, please note:
The bracket and the coupling shall be designed and processed by technicians from professional organizations and shall meet the stated requirements (Fig. 4).
It’s necessary to ensure a necessary machining precision for shaft holes on both ends of the coupling to remove any transmission clearance to the minimum extent to avoid any hysteresis during the valve’s working.
The position degree of the shaft holes on both ends of the coupling should be strictly guaranteed; otherwise, it may exceed the designed working range of the actuator so that the valve cannot work normally because the actuator’s travel cannot be adjusted.
| Symptom | Reason | Solution |
|---|---|---|
| The motor fails to start | The power supply is not connected | Connect the power supply properly |
| It's disconnected or the connector is disengaged with the terminal | Repair the disconnection and correctly connect and tighten the terminal | |
| The power supply's voltage is wrong or too low | Check whether the voltage is normal | |
| The overheating protector acts (whether the ambient temperature is too high or whether the valve is seized) | Reduce the ambient temperature, and manually check whether the valve's opening/closing is normal | |
| The micro switch fails to act properly | Replace the micro switch | |
| The start-up and running capacitors are bad | Contact the manufacturer to replace the capacitors | |
| The opening closing indicator lamp fails to light | The indicator lamp is bad | Replace the indicator lamp |
| The micro switch fails to act properly | Replace the micro switch | |
| The limit micro switch fails to act properly | Replace the micro switch | |
| The motor cannot start running when running at the limit position | The three-phase AC power supply's phase sequence is reverse | Adjust the phase sequence of the three-phase AC power supply |
| The connection of the micro switch to the control circuit is wrong | Adjust the connection | |
| The mechanical limit advances and the electrical limit acts | Readjust the mechanical limit according to the adjustment instructions of the mechanical limit stopper | |
| The servo controller's commissioning is improper | Commission again according to the instructions |
