Solid contaminants such as sludge and carbon, from a severe hermetic compressor motor burnout are best removed...

Solid contaminants such as sludge and carbon, from a severe hermetic compressor motor burnout are best removed...

• A. By flushing the system and then installing filter dryers in both the liquid and suction lines
• B. By replacing the compressor only
• C. By evaporating liquid refrigerant
• D. By adding more refrigerant and running long cycles

Answer: (A)

When solid contaminants from a severe hermetic compressor burnout are present, the system must be cleaned to prevent clogging and damage, not just recharged and run. The best approach is to flush the system to remove sludge and carbon, then install fresh filter dryers in both the liquid and suction lines. Flushing helps carry the debris out of the circuit, and placing filter dryers in both paths captures remaining solids and removes any moisture before the refrigerant is recharged. This dual-stage cleaning protects metering devices, valves, and the new compressor from contamination. Replacing the compressor alone leaves the dirty debris in the rest of the system, evaporating liquid refrigerant doesn’t remove solids, and simply adding refrigerant and running cycles won’t clear the contamination and could spread it further.

When solid contaminants from a severe hermetic compressor burnout are present, the system must be cleaned to prevent clogging and damage, not just recharged and run. The best approach is to flush the system to remove sludge and carbon, then install fresh filter dryers in both the liquid and suction lines. Flushing helps carry the debris out of the circuit, and placing filter dryers in both paths captures remaining solids and removes any moisture before the refrigerant is recharged. This dual-stage cleaning protects metering devices, valves, and the new compressor from contamination. Replacing the compressor alone leaves the dirty debris in the rest of the system, evaporating liquid refrigerant doesn’t remove solids, and simply adding refrigerant and running cycles won’t clear the contamination and could spread it further.