1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Lennox R10064911 OEM Replacement Furnace Blower Motor. This motor is designed as a direct replacement for specific Lennox furnace models, providing 1/3 horsepower at 115 volts. Please read this manual thoroughly before proceeding with any installation or service.
Figure 1: The Lennox R10064911 OEM Replacement Furnace Blower Motor. This image shows the motor unit with its electrical connections and mounting points, ready for installation into a compatible furnace system.
2. Safety Information
WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
- Always disconnect electrical power to the furnace before installing or servicing the blower motor. Failure to do so can result in electrical shock or personal injury.
- Wear appropriate personal protective equipment (PPE), including safety glasses and gloves, during installation and maintenance.
- Ensure all wiring connections are secure and comply with local electrical codes.
- Do not operate the furnace without the blower motor properly installed and secured.
- Keep hands and loose clothing away from moving parts when the motor is in operation.
3. Setup and Installation
This section outlines the general steps for replacing a furnace blower motor. Specific furnace models may have variations. Consult your furnace's specific service manual for detailed instructions.
3.1 Pre-Installation Checks
- Verify that the replacement motor (Lennox R10064911) matches the specifications of the original motor.
- Ensure the furnace power supply is disconnected at the circuit breaker or fuse box.
- Gather necessary tools, which may include screwdrivers, wrenches, wire strippers, and a multimeter.
3.2 Installation Steps
- Access the Blower Compartment: Open the furnace access panels to expose the blower assembly.
- Disconnect Wiring: Carefully label and disconnect all electrical wires from the old blower motor. Take photos for reference if needed.
- Remove Old Motor: Unbolt or unmount the old motor from the blower housing. Note its orientation.
- Transfer Components: If applicable, transfer any mounting brackets, fan blades, or other components from the old motor to the new R10064911 motor. Ensure the fan blade is securely fastened to the motor shaft.
- Install New Motor: Mount the new Lennox R10064911 motor into the blower housing, ensuring it is securely fastened and correctly oriented.
- Reconnect Wiring: Reconnect all electrical wires to the new motor according to the labels or photos taken earlier. Double-check all connections for tightness.
- Secure Access Panels: Close and secure all furnace access panels.
- Restore Power: Restore electrical power to the furnace.
- Test Operation: Initiate a heating or cooling cycle to ensure the new blower motor operates correctly and quietly.
4. Operating Instructions
The Lennox R10064911 blower motor operates automatically as part of your furnace system. Once installed, its operation is controlled by the furnace's thermostat and control board. It is designed to move air through your ductwork for heating or cooling.
- Ensure your thermostat is set to the desired mode (Heat, Cool, or Fan On).
- The motor will engage when the furnace calls for heating or cooling, or when the fan is set to continuous operation.
- Listen for smooth operation. Any unusual noises should be investigated immediately.
5. Maintenance
Regular maintenance helps ensure the longevity and efficient operation of your blower motor and furnace system. Always disconnect power before performing any maintenance.
- Annual Inspection: Have a qualified technician inspect the blower motor and assembly annually.
- Clean Blower Wheel: Over time, dust and debris can accumulate on the blower wheel, reducing airflow and efficiency. This should be cleaned periodically by a professional.
- Motor Lubrication: Most modern blower motors are sealed and do not require lubrication. Refer to your furnace's specific manual or the motor's label to determine if lubrication is necessary. If so, use only the recommended type and amount of lubricant.
- Air Filter Replacement: Regularly replace or clean your furnace's air filter as per the manufacturer's recommendations. A dirty filter can restrict airflow, causing the blower motor to work harder and potentially overheat.
6. Troubleshooting
Before attempting any troubleshooting, ensure the furnace power is disconnected. If you are unsure about any step, contact a qualified HVAC technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor does not start | No power, faulty wiring, seized motor, faulty capacitor (if applicable) | Check circuit breaker. Verify wiring connections. Inspect motor for obstructions. Consult a technician for capacitor or motor replacement. |
| Unusual noises (e.g., grinding, squealing) | Worn bearings, loose blower wheel, debris in blower housing | Inspect blower wheel for tightness and debris. If bearings are worn, motor replacement may be necessary. |
| Weak airflow | Dirty air filter, dirty blower wheel, motor running slow | Replace or clean air filter. Clean blower wheel. Consult a technician if motor speed is incorrect. |
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | R10064911 |
| Brand | Lennox |
| Type | OEM Replacement Furnace Blower Motor |
| Horsepower (HP) | 0.33 HP (1/3 HP) |
| Voltage | 115 Volts |
| Item Weight | 18.38 pounds |
| Package Dimensions | 6 x 6 x 1 inches |
| Date First Available | October 15, 2013 |
8. Warranty and Support
For warranty information, please refer to the documentation provided with your original furnace or contact Lennox directly. This replacement part is typically covered by a limited manufacturer's warranty.
For technical support or service, it is recommended to contact a qualified HVAC professional or an authorized Lennox service provider. Attempting repairs without proper training and tools can be dangerous and may void your warranty.
