1. Product Overview
The Broan 99080166 is a replacement motor designed for use in various Broan ventilation fan models, including the Broan 740WH. This motor operates at 120 volts, 1.4 amps, and achieves a speed of 3000 RPM. It is engineered to restore the functionality of your existing ventilation system by replacing a worn or faulty motor, ensuring proper air circulation and exhaust.
2. Safety Information
WARNING: To reduce the risk of fire, electric shock, or injury to persons, observe the following:
- Always disconnect power at the service panel before working on or near the fan motor. Lock out the service panel to prevent accidental power-on.
- All electrical wiring must be performed by a qualified electrician in accordance with all applicable codes and standards, including fire-rated construction codes and standards.
- Ensure the motor is correctly grounded.
- Do not operate the motor if it appears damaged.
- Wear appropriate personal protective equipment, such as gloves and eye protection, during installation.
- Keep hands and loose clothing away from moving parts.
3. Package Contents
Verify that all components are present before beginning installation:
- Broan 99080166 Replacement Vent Fan Motor (1 unit)
Note: Mounting hardware (e.g., nuts for mounting studs) may not be included and might need to be sourced separately, depending on your specific fan housing.
4. Setup and Installation
This section provides general guidelines for replacing your vent fan motor. Specific steps may vary based on your fan model. Refer to your original fan's manual for detailed instructions if available.
Pre-Installation Steps:
- Disconnect Power: Turn off power to the fan at the circuit breaker or fuse box. Verify power is off using a voltage tester.
- Access Fan Housing: Remove the fan grille and any other covers to access the motor assembly.
- Remove Old Motor: Disconnect the wiring from the old motor. Carefully unmount the old motor from its housing. Note the orientation and wiring connections for reference.
Motor Installation:
- Attach Blower Wheel: Carefully attach the existing blower wheel to the shaft of the new Broan 99080166 motor. Ensure it is securely fastened. Some older models may have a splined shaft, while this replacement motor has a smooth shaft. Ensure a tight fit.
- Mount New Motor: Position the new motor into the fan housing. Secure it using the appropriate mounting studs and nuts. If the original nuts do not fit or are missing, acquire suitable replacements.
- Connect Wiring: Connect the electrical wires to the new motor. Ensure connections are secure and match the original configuration.
- Check Rotation (if necessary): Some fan systems require a specific rotation direction (Clockwise - CW or Counter-Clockwise - CCW). If your fan operates in reverse after installation, it may be possible to reverse the motor's rotation by disassembling and reassembling the motor with the armature reversed. Consult a qualified technician if unsure.
- Reassemble Fan: Replace any covers and the fan grille.
- Restore Power: Turn power back on at the circuit breaker.
- Test Operation: Verify the fan operates correctly and quietly.
5. Operating Instructions
Once properly installed, the Broan 99080166 replacement motor operates automatically when power is supplied to the ventilation fan unit. There are no specific user controls for the motor itself; its operation is governed by the fan's existing switch mechanism.
6. Maintenance
Regular maintenance helps ensure the longevity and efficient operation of your vent fan motor.
- Power Disconnection: Always disconnect power at the circuit breaker before performing any maintenance.
- Cleaning: Periodically remove the fan grille and blower wheel. Clean the blower wheel and fan housing to remove dust and debris that can accumulate and reduce airflow or cause noise. Use a soft brush or vacuum cleaner.
- Inspection: Inspect the motor and wiring for any signs of wear, damage, or loose connections.
- Lubrication: This motor is typically sealed and does not require lubrication. Do not attempt to lubricate unless specifically instructed by Broan.
7. Troubleshooting
If your fan is not operating as expected after motor replacement, consider the following:
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on. | No power to the unit. Loose wiring connection. Faulty switch. | Check circuit breaker. Verify all wiring connections are secure (with power off). Test the fan switch. |
| Fan is noisy. | Blower wheel rubbing. Loose mounting. Debris in housing. | Ensure blower wheel is properly seated and not touching housing. Tighten mounting screws/nuts. Clean fan housing and blower wheel. |
| Fan runs, but airflow is weak or reversed. | Blower wheel dirty. Incorrect motor rotation. | Clean blower wheel. If motor rotation is incorrect, consult a technician for potential reversal (see Installation section). |
If problems persist, contact Broan customer support or a qualified electrician.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Broan |
| Model Number | 99080166 |
| Speed | 3000 RPM |
| Voltage | 120 Volts |
| Amperage | 1.4 amps (derived from product title) |
| Material | Copper |
| Item Weight | 0.01 Ounces |
| UPC | 663001040934 |
| Manufacturer | BROAN |
9. Warranty and Support
For warranty information or technical support regarding your Broan 99080166 Replacement Vent Fan Motor, please refer to the official Broan website or contact Broan customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.
Broan-NuTone LLC
www.broan-nutone.com