Lennox 72L70 18" Fan Blade 1/2" Bore

Thermostatic expansion valves are an integral part of your refrigeration unit. They are responsible for ensuring the right dosage of refrigerant is entering the cooling coil to ensure maximum efficiency in the air conditioning of the system.    These special expansion valves come with a temperature sensor that is mounted at the end of the evaporator coil. They incorporate signals from this sensor to maintain the required temperature of the HVAC system. The thermostatic expansion valve works like a precision device that can regulate the measurements of the liquid refrigerant that flows into the evaporator of your system. This regulation in the flow of the refrigerant is essential to prevent the reverse flow of the refrigerant into the compressor of your system.    Through this mechanism, the thermostatic expansion valve successfully separates the high and low pressure sides of the refrigeration/air conditioning system. The liquid refrigerant enters the expansion ...

Regularly inspect the fan blade for dust buildup, cracks, or bending. Clean it gently to maintain balanced airflow and efficiency. Ensure the mounting hub and bore fit securely. Always turn off power before servicing to avoid damage or accidental startup.

• Blade imbalance causing vibration or noise.
• Cracks or warping from wear or impact.
• Loosening on the shaft due to improper fit.
• Reduced airflow from dirt accumulation.
• Corrosion affecting performance over time.