What causes actuator to fail?
Normally, failure is caused by application errors, such as side loading, incorrect wiring, poor mounting fixity, excessive loading, and exceeding duty cycle.
What are the usual problems encountered by actuators?
Actuators facilitate the movement of valve components, enabling the valve to open and close as needed. Actuator failure will disrupt system operations as the valves will no longer have the power to operate. Common issues in an electric actuator may include motor failure or major electrical issues.
How long does a valve actuator last?
There is growing industry demand for mechanical workhorses designed specifically to operate valves, typically with expected lifespans of 20 to 40 years. The goal is to improve mechanical efficiency, reliability and safety.
Can an actuator be repaired?
It doesn’t do any good to repair an actuator when the valve is what’s causing the trouble. If the valve does operate in manual mode, then you may have an actuator problem. Actuators only have four major components that can break down and require repair.
When should a solenoid valve be replaced?
As a general rule of thumb, if your solenoid valve show signs of wear or damage, then it is likely time for a replacement.
When do you know you have an actuator problem?
If the valve still doesn’t move, then the problem is most likely the valve. If the valve does operate in manual mode, then you may have an actuator problem. Actuators only have four major components that can break down and require repair.
What causes a valve actuator to stop working?
While there may be 40 reasons valve actuators may stop working, there are really only a handful of components that can cause the problems. So, if you have an actuator on the fritz, here are the five things you need to check. What manifests as an actuator problem may actually be a valve problem.
Why is my Allied actuator not working properly?
Air is leaking at the piston guide bushings. There is increased thrust due to valve issues. There is excessive side loading in rotary applications. The piston seals are leaking. The power voltage isn’t correct. The control voltage isn’t correct. The fuse has blown. There is a power board failure. The wire has become fused or disconnected.
What happens if the contactor on an electric actuator fails?
If it fails, the actuator will not function. The contactor is also fuse protected, so check the fuses first! On an electric actuator, the motor provides the torque to operate the valve. If the motor fails, the valve isn’t going anywhere. In this case, verify that the duty cycle and insulation class are sufficient for the application.