Industrial Maintenance Technician Practice Test

When replacing a compressor, it is essential to install line dryers. Line dryers are crucial components in a refrigerant system as they serve to remove moisture and contaminants from the refrigerant before it enters the compressor and the rest of the system. Moisture can lead to serious problems like refrigerant breakdown, which can cause system failure and damage internal components. Furthermore, contaminants such as debris from the old compressor can hinder performance or even result in catastrophic failure of the new compressor.

Installing new refrigerant is often necessary, but it's not always a mandatory step during every compressor replacement, depending on the system's condition. Thermostat adjustments and cooling fins, while possibly relevant, are not directly tied to the compressor replacement process itself. Instead, focusing on line dryers ensures that the new compressor operates efficiently and has a longer service life, thereby protecting the overall integrity of the refrigeration system.