Daikin Chiller Pressure Leak Test (PLT)
Job Description: Daikin Chiller Pressure Leak Test (PLT)
Area: Green Park, Reading
Issue Identified: Following a recent call out, our engineer found both circuits to be in low pressure fault. We attended site to perform a Pressure Leak Test (PLT) using Oxygen Free Nitrogen (OFN) to locate the leak and repair.
Works carried out:
- Isolated the Daikin Chiller unit electrically and mechanically.
- Recovered refrigerant from into a dedicated recovery cylinder.
- Pressure tested with OFN.
- Identified the leak on oil filter housing and replaced the gasket.
- Repaired leak by means of tightening of a fitting.
- Retested with OFN (oxygen free nitrogen) following the repair.
- Once proved released OFN to the atmosphere and evacuated the system to a minimum of 2 Torr.
- Re-charged with virgin refrigerant.
- Repeated on Circuit 2.
- Test ran and re-commissioned.
- Completed waste transfer note and handed to an on-site representative.
- Completed F Gas certificate.