639-LA 639 Louisiana (New Orleans) Second Class Stationary Refrigeration Louisiana’s 639 certification qualifies you to operate and maintain stationary refrigeration systems in industrial and commercial settings across New Orleans. Daily work includes monitoring compressor performance, diagnosing refrigerant leaks, replacing expansion devices, and ensuring compliance with EPA regulations on hazardous coolants. Technicians spend time troubleshooting valve malfunctions, documenting system pressures, and performing preventive maintenance that keeps cold storage facilities, processing plants, and restaurants operational without interruption.
| Exam Name | 639-LA 639 Louisiana (New Orleans) Second Class Stationary Refrigeration |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
