The Carrier LA680540 Fan Blade is a critical replacement component designed for high-efficiency condenser fan motor applications within Carrier, Bryant, and Payne outdoor units. Featuring a 22-inch diameter and a 34-degree pitch, this 5-blade aluminum fan is engineered to maintain precise airflow patterns and static pressure requirements necessary for optimal heat rejection. The assembly is configured for clockwise (CW) rotation and fits a standard 1/2-inch motor shaft, ensuring a secure hub-mount installation. When performing a field replacement, technicians must verify the bore size and pitch to prevent motor overloading or reduced cooling capacity. This OEM replacement fan blade provides the structural integrity required to withstand high-velocity operation while minimizing vibration and noise. Precision balancing ensures long-term bearing protection for the HVAC outdoor fan motor, making it a staple for professional chiller and air conditioner repair. Proper alignment during installation is mandatory to ensure clearance within the shroud and maintain system SEER ratings.

Key Technical Benefits

• Optimized Airflow: The 34-degree pitch is specifically calibrated for Carrier replacement parts to maximize CFM output.
• Industrial Construction: Heavy-duty blade design resists corrosion and maintains aerodynamic profile under extreme outdoor temperatures.
• NEMA Standard Fit: The 1/2-inch bore facilitates direct compatibility with a wide range of condenser motors.
• Vibration Dampening: Factory-balanced 5-blade configuration reduces mechanical stress on the motor shaft and bearings.

Common Installation Questions

What happens if the fan pitch is incorrect for the motor?
Installing a blade with an incorrect pitch can lead to motor amp draw issues. If the pitch is too steep, the motor may overheat and trip the thermal overload; if it is too shallow, the system will lack sufficient airflow for heat exchange.

How do I confirm the rotation direction?
The CW rotation is determined by looking down at the discharge side of the fan. Always verify the rotation matches the lead-end or shaft-end designation of your specific HVAC fan motor.

Can this blade be used on 5/8-inch shafts?
No, this specific model features a fixed 1/2-inch bore. Attempting to bore out the hub or use adapters can lead to imbalance and catastrophic failure of the condensing unit fan.

Item is Non Cancelable / Non Returnable

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.