Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Belimo GMB24-3-T N4 Non-Spring Return Damper Actuator. Please read this manual thoroughly before attempting any installation or operation to ensure proper functionality and to prevent damage or injury.
Image: The Belimo GMB24-3-T N4 Non-Spring Return Damper Actuator, an orange-colored rectangular unit with a circular viewing window on the front, designed for controlling air dampers in HVAC systems.
Setup and Installation
Proper installation is crucial for the actuator's performance and longevity. Ensure all local and national electrical codes are followed.
Safety Precautions
- Disconnect power before installation or servicing.
- Ensure the actuator is securely mounted to the damper shaft.
- Do not exceed the specified voltage and current ratings.
- Refer to the wiring diagram for correct electrical connections.
- Installation should only be performed by qualified personnel.
Mounting Instructions
- Ensure the damper shaft is clean and free of burrs.
- Slide the actuator onto the damper shaft, aligning the anti-rotation bracket.
- Secure the actuator to the shaft using the provided screws or clamps.
- Tighten all mounting hardware to the recommended torque.
Wiring
The GMB24-3-T N4 actuator requires specific wiring for power and control signals. Consult the product's technical data sheet for the precise wiring diagram. Typically, connections include power supply (24V AC/DC), control input (e.g., 0-10V DC or 2-10V DC), and feedback signals (if applicable).
Operating Instructions
The Belimo GMB24-3-T N4 is a non-spring return actuator, meaning it will maintain its last position upon power loss. Its operation is controlled by an external signal, typically from a building management system (BMS) or thermostat.
Functional Overview
- The actuator receives a control signal (e.g., voltage or current) that dictates the desired damper position.
- It rotates the damper shaft to the commanded position.
- The actuator provides feedback (if configured) on its current position.
- In the event of a power failure, the damper will remain in its last commanded position.
Manual Override
Some models may feature a manual override button or lever. Refer to the specific product documentation for your actuator to determine if this feature is present and how to use it safely to manually adjust the damper position.
Maintenance
The Belimo GMB24-3-T N4 actuator is designed for long-term, maintenance-free operation under normal conditions. However, periodic checks can help ensure optimal performance.
Routine Checks
- Inspect wiring connections for tightness and signs of wear or corrosion annually.
- Verify that the actuator is securely mounted and that the damper operates smoothly without obstruction.
- Check for any unusual noises during operation.
Cleaning
Clean the exterior of the actuator with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure no moisture enters the actuator housing.
Troubleshooting
This section provides guidance for common issues. For complex problems, contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Actuator does not move | No power supply; Incorrect wiring; Faulty control signal; Damper jammed | Check power connections and voltage; Verify wiring against diagram; Check control signal source; Inspect damper for obstructions |
| Actuator moves erratically | Unstable control signal; Loose wiring; Interference | Verify control signal stability; Secure all wiring connections; Check for sources of electrical interference |
| Actuator makes unusual noise | Mechanical obstruction; Internal component issue | Inspect damper and linkage for obstructions; If noise persists, contact technical support |
Specifications
| Attribute | Detail |
|---|---|
| Model | GMB24-3-T N4 |
| Brand | Belimo |
| Type | Non-Spring Return Damper Actuator |
| Torque | 360 in-lb |
| ASIN | B009XESEMU |
| Manufacturer | Belimo |
| Date First Available | July 18, 2017 |
Warranty and Support
Belimo products are manufactured to high standards and typically come with a manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Belimo website.
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Belimo customer support or your authorized distributor. Ensure you have your product model number (GMB24-3-T N4) and serial number (if applicable) ready when contacting support.
You can find more information and contact details on the official Belimo website: www.belimo.com
