1. Uvod
The Noctua NF-A8 5V PWM is a premium quiet fan designed for various 5V applications requiring efficient cooling and low noise levels. This 80x80x25mm fan features advanced acoustic optimization and Flow Acceleration Channels for superior performance. It includes a USB power adapter cable for versatile power options and supports 4-pin PWM for automatic speed control.
Slika 1: Prednja strana view of the Noctua NF-A8 5V PWM fan.
2. Sigurnosne informacije
Važno: This fan is designed for 5V operation. It cannot be run at 12V and will be permanently damaged if connected to typical 12V power sources, such as standard PC motherboard fan headers. Ensure your power source provides 5V DC before connecting the fan.
Slika 2: Natrag view of the fan showing the 5V PWM label and warning.
Figure 3: Visual warning indicating the fan is not for use in standard 12V PC systems.
3. Sadržaj paketa
Provjerite da li su sve stavke prisutne u paketu:
- Noctua NF-A8 5V PWM Fan
- USB adapter za napajanje
- Antivibracijski nosači
- Ventilatorski vijci
- Extension Cable
- OmniJoin Adaptor Set
Figure 4: Included accessories with the NF-A8 5V PWM fan.
4. Postavljanje i instalacija
4.1 Montiranje ventilatora
The NF-A8 5V PWM fan can be mounted using either the provided anti-vibration mounts or standard fan screws.
- Using Anti-vibration Mounts: Gently pull the anti-vibration mounts through the fan's mounting holes and into the desired mounting location. These mounts help reduce noise transfer.
- Using Fan Screws: Secure the fan to your device or chassis using the included fan screws.
Figure 5: Close-up of the anti-vibration mounts.
4.2 Spajanje ventilatora
The NF-A8 5V PWM fan offers flexible connection options:
- 4-pin PWM Header: Connect the fan's 4-pin connector directly to a compatible 5V 4-pin PWM fan header on your device. This allows for automatic speed control based on system temperature.
- USB napajanje: Use the included USB power adaptor cable to power the fan from any standard USB host port (e.g., on a computer, power bank, or USB wall adapter). This connection provides constant fan speed.
- OmniJoin Adaptor Set: For specific proprietary fan headers, use the OmniJoin adaptor set to ensure compatibility. Refer to your device's manual for specific wiring diagrams if using OmniJoin.
Figure 6: The 4-pin PWM connector for speed control.
Figure 7: The USB power adaptor cable for flexible power options.
5. Operacija
Once properly connected to a 5V power source, the fan will begin to operate. If connected via a 4-pin PWM header, the fan speed will be automatically adjusted by the host device based on its temperature readings. If connected via the USB power adaptor, the fan will operate at a constant speed.
5.1 Flow Acceleration Channels
The fan blades feature Flow Acceleration Channels, which are small ridges on the suction side of the blades. These channels accelerate the airflow in the outer region of the blade, reducing flow separation and improving efficiency and acoustic performance.
Figure 8: Detail of Flow Acceleration Channels on a fan blade.
5.2 SSO2 Bearing
The fan utilizes Noctua's second-generation self-stabilizing oil-pressure bearing (SSO2). This advanced bearing system ensures long-term stability and quiet operation by precisely positioning the rotor axis with a magnetic field.
Figure 9: Diagram illustrating the SSO2 bearing mechanism.
6. Održavanje
To ensure optimal performance and longevity of your Noctua NF-A8 5V PWM fan, periodic cleaning is recommended.
- Uklanjanje prašine: Use a soft brush, compressed air, or a damp cloth to gently remove dust accumulation from the fan blades and frame.
- Izbjegavajte tečnosti: Do not immerse the fan in liquids. Ensure the fan is completely dry before reconnecting it to power.
- Nije potrebno podmazivanje: The SSO2 bearing is self-lubricating and does not require additional oil or grease.
7. Otkrivanje problema
| Problem | Mogući uzrok | Rješenje |
|---|---|---|
| Fan does not spin. | Netačan voltage (e.g., 12V instead of 5V). Slaba veza. Nedovoljna snaga. | Verify the power source is 5V DC. Uverite se da su svi kablovi dobro povezani. Pokušajte s drugim USB portom ili adapterom za napajanje. |
| Ventilator je neuobičajeno glasan. | Začepljenje lopatica ventilatora. Labava montaža. Fan operating at maximum speed (if PWM controlled). | Provjerite i uklonite sve prepreke. Ensure the fan is securely mounted using anti-vibration mounts or screws. If using PWM, check software settings to reduce fan speed. |
| Fan spins intermittently. | Unstable 5V power supply. Neispravna veza. | Use a stable 5V power source. Provjerite i osigurajte sve priključke. |
8. Specifikacije
| Feature | Detalj |
|---|---|
| Model | NF-A8 5V PWM |
| Dimenzije | 80x80x25mm (3.15"L x 3.15"W x 0.98"H) |
| Voltage | 5V |
| Konektor za napajanje | 4-Pin PWM |
| Maksimalna brzina rotacije | 2200 RPM |
| Nivo buke | 17.7 dB(A) |
| MTTF (Srednje vrijeme do kvara) | >150,000 sati |
| Bearing Type | SSO2 (Self-Stabilizing Oil-Pressure Bearing) |
| Materijal | PBT ojačan staklenim vlaknima |
| Kompatibilni uređaji | Desktop (5V applications) |
Figure 10: Dimensions of the NF-A8 5V PWM fan.
9. Garancija i podrška
Noctua products are manufactured to the highest quality standards. This product is covered by a 6-year manufacturer's warranty. For detailed warranty information, technical support, or to contact customer service, please visit the official Noctua webweb-mjesto ili pogledajte garantni list koji ste dobili uz proizvod.
Službeno Webstranica: www.noctua.at
