Massachusetts Oil Burner License Practice Test

What effect does dirt or lint buildup in the burner fan blades have?

1. Increases the combustion efficiency

2. Reduces the amount of combustion air

3. Improves the overall burner performance

4. Enhances the flame stability

The correct answer is: Reduces the amount of combustion air

Dirt or lint buildup in the burner fan blades primarily reduces the amount of combustion air reaching the combustion chamber. The burner fan is designed to deliver a specific amount of air needed for optimal combustion, ensuring that the fuel burns efficiently and effectively. When the fan blades are obstructed by dirt or lint, this restricts airflow, leading to inadequate supply of oxygen. This reduction in combustion air impairs the combustion process as fuel cannot burn completely without enough oxygen. As a result, it can cause a variety of issues such as incomplete combustion, which not only reduces efficiency but may also lead to the production of harmful emissions and increased sooting. Therefore, maintaining clean fan blades is crucial for ensuring that the burner operates at its designed efficiency and safety levels.