ESCO Air Conditioning Practice Exam

Solid contaminants such as sludge and carbon from a severe hermetic compressor motor burn out are best removed by:

1. Adding more refrigerant

2. Flushing the system and then installing filter dryers in both the liquid and suction lines

3. Replacing all components

4. Using a desiccant

The correct answer is: Adding more refrigerant

In this scenario, solid contaminants such as sludge and carbon resulting from a severe hermetic compressor motor burnout are best addressed by adding more refrigerant. The reason behind this is that adding more refrigerant can help dilute the contaminants in the system, making it easier to circulate and eventually remove them. This approach can assist in mitigating the harmful effects of the contaminants on the system components. Flushing the system, installing filter dryers, replacing components, or using a desiccant are not the most effective methods for dealing with solid contaminants like sludge and carbon from a severe motor burnout.