1. 서론
This manual provides essential information for the safe and efficient operation of your Wathai 120mm x 38mm 12V DC Brushless Cooling Case Fan. This high-performance fan is designed to provide effective cooling for various electronic components and environments, ensuring optimal airflow and temperature regulation. Please read this manual thoroughly before installation and use.
2. 안전 정보
- 전원 공급 장치가 팬의 정격 볼륨과 일치하는지 확인하십시오.tage (12V DC). Incorrect voltag팬이 손상될 수 있습니다.
- 설치, 청소 또는 유지 보수 전에 전원을 차단하십시오.
- Keep fingers and other objects away from the fan blades during operation to prevent injury.
- Do not operate the fan in environments with excessive dust or corrosive gases unless specifically rated for such conditions.
- While some models may offer moisture resistance, prolonged submersion or direct water exposure is not recommended unless explicitly stated for underwater operation.
3. 패키지 내용
패키지에 모든 품목이 들어 있는지 확인하세요.
- 1 x Wathai 120mm x 38mm 12V DC Brushless Cooling Case Fan
- 1 x Fan Grill
- 4 x Mounting Screws and Nuts

Figure 1: Fan accessories including the fan, grill, screws, and nuts.
4. 사양
| 특징 | 사양 |
|---|---|
| 모델 번호 | 12038S12V2P2.5 |
| 치수(길이 x 너비 x 높이) | 120mm X 120mm X 38mm (4.72 "X 4.72"X 1.5 ") |
| 정격 볼륨tage | 12V 직류 |
| 정격 전류 | 0.5A |
| 전력 소비 | 6 와트 |
| 속도 | 2800 RPM |
| 기류 용량 | 118 퀴놀론 |
| 소음 수준 | 42데시벨 |
| 베어링 유형 | 슬리브 베어링 |
| 전원 커넥터 | 2핀 |
| 재료 | 플라스틱 |

Figure 2: Detailed dimensions of the Wathai 120mm x 38mm fan.
5. 설정 및 설치
5.1 물리적 설치
- 장착 위치 준비: Identify a suitable location for the fan, ensuring adequate space for airflow and mounting. The fan dimensions are 120mm x 120mm x 38mm.
- Attach Fan Grill: Place the fan grill over the side of the fan where air will be exhausted or drawn in, depending on your desired airflow direction. This protects the blades and prevents accidental contact.
- 팬 장착: Use the provided screws and nuts to securely fasten the fan to your desired surface (e.g., computer case, cabinet, enclosure). Ensure the fan is stable and does not vibrate excessively.
5.2 전기 연결
The fan features a 2-pin connector for power. Connect the red wire to the positive (+) 12V DC terminal and the black wire to the negative (-) or ground terminal of your power source. Ensure a secure connection to prevent intermittent operation or damage.
5.3 공기 흐름 방향
The fan is designed to move air in a specific direction. Typically, air flows from the open side of the fan towards the side with the motor's support struts. An arrow on the fan frame usually indicates the direction of airflow. Position the fan to achieve the desired cooling or ventilation effect.

Figure 3: Airflow direction diagram. Fan can be oriented vertically or horizontally.
6. 사용 설명서
6.1 전원 켜기/끄기
Once properly installed and connected to a 12V DC power source, the fan will begin operating. To turn the fan off, disconnect it from the power source or use an inline switch if one has been installed.
6.2 일반적인 애플리케이션
This fan is suitable for a wide range of cooling applications:
- Computer Systems: Cooling CPUs, GPUs, and PC cases to maintain stable operating temperatures.
- RV Refrigerators: Enhancing ventilation for RV refrigerator coils to improve cooling efficiency.
- 산업 환경: Providing airflow for various industrial equipment, inverters, and enclosures.
- DIY 프로젝트: Versatile for custom cooling solutions in various electronic setups.

Figure 4: Various applications for the Wathai cooling fan.
6.3 성능 특성
The fan provides a high airflow of 118 CFM at 2800 RPM. The noise level is rated at 42 dBA. While effective for cooling, this noise level may be noticeable in quiet environments. Consider using a fan speed controller (not included) if noise reduction is desired for specific applications.
7. 유지관리
7.1 청소
Regular cleaning helps maintain optimal performance and extends the fan's lifespan. Disconnect power before cleaning. Use a soft brush or compressed air to remove dust and debris from the fan blades and frame. Avoid using liquid cleaners directly on the fan motor or electrical components.
7.2 Bearing Type
This fan utilizes a sleeve bearing. Sleeve bearings are generally quieter at lower speeds and cost-effective. They typically require less maintenance than ball bearings but can have a shorter lifespan in high-temperature or vertical mounting applications compared to ball bearings.
7.3 Moisture Resistance
The fan is designed with some level of moisture resistance suitable for environments like RVs or outdoor enclosures where occasional moisture might be present. However, it is not designed for continuous underwater operation unless specified with a higher IP rating (e.g., IP67 for full submersion).
Video 1: Demonstration of the Wathai fan's IP67 waterproof capabilities.
Video 2: Video showing an IP rating test for a similar fan, demonstrating moisture resistance.
8. 문제 해결
- 팬이 회전하지 않음:
- Check power connections: Ensure the red wire is connected to +12V DC and the black wire to ground.
- Verify power source: Confirm that the 12V DC power source is active and providing sufficient current.
- Inspect for obstructions: Make sure nothing is blocking the fan blades from rotating freely.
- 과도한 소음:
- Check for loose mounting: Ensure all screws and nuts are tightened.
- Inspect for obstructions: Remove any debris that might be hitting the fan blades.
- Consider a fan speed controller: If the noise is due to high RPM, a controller can reduce speed and noise.
- 불충분한 냉각:
- Verify airflow direction: Ensure the fan is pushing air in the correct direction for your application.
- Clean fan blades and grill: Dust buildup can significantly reduce airflow.
- Check for proper ventilation: Ensure there are clear intake and exhaust paths for air.
9. Additional Information & Usage Examp레
Video 3: Video demonstrating the Wathai 120mm fan in a DIY cooling setup.
Video 4: Short video showcasing the Wathai 12V cooling fan for various DIY projects.
Video 5: Video about fan size introduction, useful for understanding fan dimensions and compatibility.
Video 6: Detailed video demonstrating the high airflow and moisture-proof features of a 120mm fan.
Video 7: Video demonstrating a DC small fan for DIY cooling projects.
10. 보증 및 지원
For warranty information, technical support, or any inquiries regarding your Wathai cooling fan, please contact the manufacturer directly through their official web제품을 구매한 사이트 또는 판매점에 문의하십시오. 보증 청구를 위해 구매 영수증을 구매 증빙 자료로 보관하십시오.