1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your DORHEA 3007 Cooling Fan. This fan is designed to provide efficient cooling for various Raspberry Pi models and other robotic projects, ensuring optimal performance and longevity of your devices.
The DORHEA 3007 fan features a compact 30x30x7.5mm design, a 2-pin connector, and supports both 3.3V and 5V DC operation for flexible cooling performance and noise levels.
2. Package Contents
Please verify that all items listed below are included in your package:
- 2 x DORHEA 3007 Cooling Fan
- 8 x Nuts
- 8 x Screws
Image 2.1: Contents of the DORHEA 3007 Cooling Fan package, including two fans, screws, and nuts.
3. Setup and Installation
Follow these steps to properly install the DORHEA 3007 Cooling Fan onto your Raspberry Pi or compatible device.
3.1. Physical Installation
- Mounting the Fan: Position the fan over the desired cooling area on your Raspberry Pi or project board. Use the provided screws and nuts to secure the fan in place. Ensure the fan blades are unobstructed.
- Identify Connection Pins: The fan comes with a 2-pin connector. This connector is designed to be separated, allowing you to choose between 3.3V and 5V power sources on your Raspberry Pi's GPIO pins.
Image 3.1: The fan's 2-pin connector can be separated to connect to either 3.3V or 5V GPIO pins.
3.2. Electrical Connection
The fan can be powered by either 5V or 3.3V from your Raspberry Pi's GPIO header. The choice affects fan speed and noise level.
3.2.1. Connecting to 5V (Higher Speed, More Airflow)
For maximum cooling performance, connect the fan to the 5V and Ground (GND) pins on your Raspberry Pi's GPIO header. This will result in higher fan speed and greater airflow, which may also produce slightly more noise.
- Connect the red wire (positive) to a 5V pin on the Raspberry Pi GPIO header.
- Connect the black wire (negative) to a Ground (GND) pin on the Raspberry Pi GPIO header.
Image 3.2: Example of the fan's 5V connection to a Raspberry Pi.
Image 3.3: Diagram illustrating the connection of the fan to the 5V and Ground pins on the Raspberry Pi GPIO header.
3.2.2. Connecting to 3.3V (Lower Speed, Quieter Operation)
If noise is a primary concern, you can connect the fan to the 3.3V and Ground (GND) pins. This will result in a lower fan speed and quieter operation, with slightly reduced cooling performance.
- Connect the red wire (positive) to a 3.3V pin on the Raspberry Pi GPIO header.
- Connect the black wire (negative) to a Ground (GND) pin on the Raspberry Pi GPIO header.
Image 3.4: Diagram illustrating the connection of the fan to the 3.3V and Ground pins on the Raspberry Pi GPIO header.
4. Operating Instructions
Once properly connected, the DORHEA 3007 Cooling Fan will begin operating automatically when your Raspberry Pi is powered on. The fan provides continuous airflow to dissipate heat from the CPU and other components.
- 5V Connection: Provides maximum cooling at a higher rotational speed (up to 5000 RPM) and a noise level of approximately 15.92dBA.
- 3.3V Connection: Provides quieter operation at a lower rotational speed, suitable for environments where noise reduction is prioritized over maximum cooling.
Monitor your Raspberry Pi's temperature to ensure adequate cooling for your specific application. Software tools are available for Raspberry Pi to display CPU temperature.
5. Maintenance
To ensure the longevity and optimal performance of your DORHEA 3007 Cooling Fan, periodic maintenance is recommended.
- Cleaning: Regularly inspect the fan blades and housing for dust accumulation. Use a soft brush or compressed air to gently remove dust. Ensure the Raspberry Pi is powered off before cleaning.
- Inspection: Periodically check the fan's wires and connections for any signs of wear or damage. Ensure the fan is securely mounted.
The fan is designed for a long life of approximately 30,000 hours under normal operating conditions.
6. Troubleshooting
If you encounter issues with your DORHEA 3007 Cooling Fan, refer to the following common problems and solutions:
- Fan Not Spinning:
- Ensure the Raspberry Pi is powered on.
- Verify that the fan's 2-pin connector is correctly and securely plugged into the appropriate GPIO pins (5V/3.3V and GND).
- Check for any physical obstructions preventing the fan blades from rotating.
- Excessive Noise:
- If connected to 5V, consider switching the connection to 3.3V for quieter operation, though cooling performance will be slightly reduced.
- Ensure the fan is securely mounted and not vibrating against other components.
- Clean any dust or debris from the fan blades.
- Insufficient Cooling:
- Ensure the fan is connected to the 5V pins for maximum airflow.
- Verify that the fan is positioned correctly to direct airflow over the heat-generating components (e.g., CPU).
- Consider adding a heatsink to your Raspberry Pi's CPU for enhanced thermal management.
7. Specifications
| Feature | Specification |
|---|---|
| Fan Size (LxWxH) | 30 x 30 x 7.5 mm (1.18" x 1.18" x 0.28") |
| Wire Length | 66 mm (2.6 inches) |
| Connector Type | 2-pin (One-to-Two pin separable) |
| Color | Black |
| Bearing Type | Hypro Bearing |
| Operating Voltage | DC 3.3V - 5V |
| Start-up Voltage | DC 3V |
| Noise Level | 15.92 dBA |
| Life Time | 30,000 hours |
| Material | Plastic |
| Maximum Rotational Speed | 5000 RPM |
| Compatible Devices | Raspberry Pi B, B+, A+, 2, 3, 4, 5 Model B, Pi Zero/Zero W, other robotic projects |
8. Warranty Information
For specific warranty details, please refer to the product packaging or contact DORHEA customer support directly. General warranty terms typically cover manufacturing defects for a limited period from the date of purchase.
9. Customer Support
If you require further assistance, have questions, or encounter issues not covered in this manual, please contact DORHEA customer support. You can typically find contact information on the product packaging or the official DORHEA website.