1. Product Overview
The HUAYU Sanju SJ1755HA2B is an all-metal, high-temperature resistant fan designed for industrial and electronic cooling applications. This fan operates on 220V and is built for durability and reliable performance in demanding environments.

Figure 1: Front view of the SJ1755HA2B fan, displaying the fan blades and product label.
2. Safety Information
Please read and understand all safety instructions before installing or operating this fan. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Electrical Safety: Ensure the power supply matches the fan's voltage (220V). Disconnect power before installation, maintenance, or troubleshooting. All wiring should be performed by a qualified electrician in accordance with local electrical codes.
- Moving Parts: Keep fingers, tools, and other objects away from the fan blades during operation. The fan blades rotate at high speed and can cause injury.
- Temperature: This fan is designed for high-temperature environments, but ensure it is not exposed to temperatures exceeding its operational limits.
- Mounting: Securely mount the fan to prevent vibration and accidental dislodgement.
3. Setup
Follow these steps for proper installation of the fan:
- Unpacking: Carefully remove the fan from its packaging and inspect for any damage. Do not install if damaged.
- Mounting: Position the fan in the desired location. Use appropriate screws and fasteners to secure the fan firmly to a stable surface. Ensure adequate clearance around the fan for proper airflow.
- Wiring: Connect the fan's power wires to a 220V AC power source. The fan typically has two wires: one for live (L) and one for neutral (N). Refer to local wiring standards for correct connection. Ensure all connections are secure and insulated.

Figure 2: Back view of the SJ1755HA2B fan, illustrating the motor and wiring points.
4. Operating Instructions
Once properly installed and wired, the fan is ready for operation.
- Power On: Apply 220V AC power to the fan. The fan should begin to rotate immediately.
- Power Off: Disconnect the 220V AC power supply to stop the fan.
- Continuous Operation: This fan is designed for continuous operation in suitable environments. Monitor for unusual noises or vibrations during initial operation.
5. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of your fan.
- Cleaning: Periodically disconnect power and gently clean the fan blades and housing to remove dust and debris. Use a soft brush or compressed air. Do not use harsh chemicals or liquids that could damage electrical components.
- Inspection: Regularly inspect the fan for any signs of wear, loose connections, or damage to the blades or housing. Ensure mounting screws remain tight.
- Lubrication: This fan typically uses sealed bearings that do not require lubrication. Do not attempt to lubricate the bearings unless specified by the manufacturer.
6. Troubleshooting
If you encounter issues with your fan, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not start | No power supply Incorrect wiring Motor failure | Check power connection and source Verify wiring against diagram Contact manufacturer for support |
| Unusual noise or vibration | Loose mounting Debris in fan blades Bearing wear | Tighten mounting screws Clean fan blades (power off) Contact manufacturer for support |
| Reduced airflow | Blocked intake/exhaust Dirty fan blades | Clear obstructions Clean fan blades (power off) |
If the problem persists after attempting these solutions, contact the manufacturer for further assistance.
7. Specifications
Key technical specifications for the HUAYU Sanju SJ1755HA2B fan:
- Model Number: SJ1755HA2B (also F614R-12MC-IB Cooling fan)
- Brand: HUAYU
- Voltage: 220 Volts
- Wattage: 3.6 watts
- Current: 0.18A
- Material: All Metal
- ASIN: B08BR7GD1
- UPC: 745895971416
8. Warranty and Support
This product is covered by the manufacturer's standard warranty. For specific warranty terms, technical support, or service inquiries, please contact HUAYU customer service directly. Keep your purchase receipt as proof of purchase.