ESCO Air Conditioning Practice Exam

Where should a liquid line filter-drier be positioned for optimal system performance?

1. Between the accumulator and compressor

2. Between the compressor and condenser

3. Between the condenser and metering device

4. Between the evaporator and accumulator

The correct answer is: Between the accumulator and compressor

A liquid line filter-drier is an important component in a refrigeration or air conditioning system that helps remove contaminants and control moisture. Placing it between the accumulator and compressor allows it to protect the compressor from any harmful debris or moisture that can negatively affect its performance. Placing it at any other location would not provide the same level of protection and could potentially lead to system issues. Therefore, option A is the correct answer for optimal system performance. Options B, C, and D are incorrect as they do not provide the same level of protection to the compressor. Placing the filter-drier between the compressor and condenser (option B) could allow contaminants and moisture to enter the compressor, leading to breakdowns. Placing it between the condenser and metering device (option C) would not protect the compressor at all, and placing it between the evaporator and accumulator (option D) may result in reduced efficiency and potential damage to the evaporator. Overall, placing the liquid line filter-drier between the accumulator and compressor is the most optimal position for system performance.