What is the recommended vacuum level for evacuating a refrigeration system before charging with refrigerant?
- A0.5 in. Hg
- B1.0 in. Hg
- 2.0 in. Hg
- D3.0 in. Hg
Exam tip
Proper evacuation is a critical step in the refrigeration system installation and maintenance process.
Why C is correct
The recommended vacuum level for evacuating a refrigeration system before charging with refrigerant is 2.0 in. Hg. This ensures that all air and moisture are removed from the system, which is crucial for proper refrigerant flow and system efficiency.