Hey there! As a supplier of non fail-safe damper actuators, I often get asked about how to adjust the position of these nifty devices. So, I thought I'd put together this blog post to share some tips and tricks on the topic.


First things first, let's talk about what a non fail-safe damper actuator is. Essentially, it's a device that controls the opening and closing of dampers in HVAC systems. Unlike fail-safe actuators, which automatically return to a pre-set position in the event of a power failure, non fail-safe actuators stay in their current position. This makes them a great choice for applications where you need precise control over the damper's position.
Now, let's get into the nitty-gritty of adjusting the position of a non fail-safe damper actuator. The process can vary depending on the specific model and manufacturer, but there are some general steps that you can follow.
Step 1: Gather Your Tools
Before you start adjusting the actuator, you'll need to gather a few tools. You'll typically need a screwdriver, a multimeter, and possibly a torque wrench. Make sure you have the right tools for the job, and that they're in good working condition.
Step 2: Power Down the System
Safety first! Before you start working on the actuator, make sure you power down the HVAC system. This will prevent any electrical shocks or other accidents. You should also label any wires or connections that you disconnect, so you can easily reconnect them later.
Step 3: Locate the Adjustment Screws
Most non fail-safe damper actuators have adjustment screws that allow you to fine-tune the position of the damper. These screws are usually located on the side or top of the actuator. Refer to the manufacturer's instructions to find the exact location of the adjustment screws for your specific model.
Step 4: Make Small Adjustments
Once you've located the adjustment screws, you can start making small adjustments to the position of the damper. Use a screwdriver to turn the screws clockwise or counterclockwise, depending on which direction you want to move the damper. Make sure you only make small adjustments at a time, and test the damper's position after each adjustment.
Step 5: Use a Multimeter
If you're having trouble getting the damper to the exact position you want, you can use a multimeter to measure the voltage or current output of the actuator. This will give you a more accurate reading of the actuator's position, and help you make more precise adjustments.
Step 6: Check the Torque
Some non fail-safe damper actuators require a specific amount of torque to operate correctly. If your actuator requires a specific torque, use a torque wrench to make sure you're applying the right amount of force. This will prevent the actuator from being over-tightened or under-tightened, which can cause it to malfunction.
Step 7: Test the System
Once you've made all the necessary adjustments, it's time to test the HVAC system. Power up the system, and check the position of the damper. Make sure it's opening and closing correctly, and that it's staying in the desired position. If you notice any issues, go back and make further adjustments as needed.
Different Types of Non Fail-Safe Damper Actuators
There are several different types of non fail-safe damper actuators available on the market. Here are a few examples:
- Standard Damper Actuator 8nm/16nm/24nm(24) On/off: This type of actuator is designed for on/off control of dampers. It comes in different torque ratings (8nm, 16nm, and 24nm) and is suitable for a variety of applications.
- Standard Damper Actuator 8nm/16nm/24nm(230) On/off: Similar to the previous one, but it operates on a 230V power supply. It's a great choice for applications where a higher voltage is required.
- Standard Damper Actuator 2nm Mondulating: This actuator is designed for modulating control of dampers. It can provide precise control over the damper's position, making it ideal for applications where you need to maintain a specific airflow or temperature.
Troubleshooting Tips
If you're having trouble adjusting the position of your non fail-safe damper actuator, here are some troubleshooting tips:
- Check the Wiring: Make sure all the wires are properly connected, and that there are no loose or damaged connections.
- Inspect the Actuator: Look for any signs of damage or wear on the actuator. If you notice any issues, it may need to be replaced.
- Verify the Power Supply: Make sure the actuator is receiving the correct voltage and current. A power supply issue can cause the actuator to malfunction.
- Refer to the Manual: If you're still having trouble, refer to the manufacturer's manual for more detailed instructions and troubleshooting tips.
Conclusion
Adjusting the position of a non fail-safe damper actuator may seem like a daunting task, but it's actually quite straightforward if you follow the right steps. By gathering the right tools, powering down the system, making small adjustments, and testing the system, you can ensure that your damper is operating correctly.
If you're in the market for a non fail-safe damper actuator, we have a wide range of high-quality products to choose from. Whether you need an on/off actuator or a modulating one, we've got you covered. If you have any questions or would like to discuss your specific requirements, feel free to reach out to us. We're here to help you find the perfect solution for your HVAC system.
References
- Manufacturer's manuals for non fail-safe damper actuators
- HVAC industry standards and best practices

