Detailed Pressure Leak Test (PLT) on a Ciat Chiller
Job Description: Detailed Pressure Leak Test (PLT) on a Ciat Chiller
Area: Pan Peninsula, London
Issue Identified: Following a recent attendance for maintenance, circuit 3 required a detailed pressure leak test to diagnose a leak on the system.
Works carried out:
- Isolated the Ciat Chiller unit electrically and mechanically.
- Recovered refrigerant into a dedicated recovery cylinder.
- Pressure tested with OFN (oxygen free nitrogen) to locate leak.
- Repaired the leak by means of brazing at the liquid valve and suction valve.
- Once proved released Oxygen Free Nitrogen (OFN) into atmosphere and evacuated the system to a minimum of 2 Torr.
- Re-charged with the recovered refrigerant and trim charged with virgin refrigerant.
- Test ran and re-commissioned.
- Completed a waste transfer note and handed to on-site representative.
- Completed an F Gas certificate.