1. The motor does not work
Explanation of reasons: a. The power cord is disconnected or lacks phase. Remedy: a. Check the power cord
b. Control box control line failure b. Exclude line failure
c. Failure of stroke or torque control mechanism c. Test with universal meter
2. The motor stops during operation
Reason explanation: a. The valve is faulty Remedy: a. Check whether the valve is stuck
b. Overload of the electric device, operation of the torque control mechanism b. Excluding the overload phenomenon, increasing the setting torque appropriately
3 motor overheated or buzzing
Explanation of reason: a. The motor's continuous working time is too long. Remedy: a. Immediately stop the operation and cool the motor.
b. One phase disconnection b. Check the power cord to ensure that all three lines have power
4. After the valve is in position, the motor will not stop, the light will not be on or the travel cannot be controlled.
Explanation of reasons: a. Failure of the stroke or torque control mechanism. Remedy: a. Check the stroke or torque control mechanism
b. Improper adjustment of stroke control mechanism b. Re-adjustment of stroke control mechanism
c. Phase sequence error c. Reverse phase sequence
d. The contactor or iron is not released d. Clean or replace the contactor
5. Remote valveless signal
Explanation of reason: a. Potentiometer gear set screw loosening Remedy: a. Tighten potentiometer gear set screw
b. Remote potentiometer failure b. Check the replacement potentiometer
6. The opening degree indicates the failure of the organization
Explanation of reason: a. Potentiometer damage Remedy: a. Replace
b. Engaging and gear loosening b. Tightening set screws
c. Bad conductor contact c. Replacement of new wire
7. The output shaft does not meet the requirements
Cause explanation: The power supply phase sequence is reversed. Remedy: Exchange any two power cords
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