Pressure Leak Test (PLT) on Daikin VRV
Job Description: Pressure Leak Test (PLT) on Daikin VRV
Area: Charles II Street, London
Issue Identified: Following a recent call out at the site for the F3 fault, the engineer advised that the temperature in the oil separator was very high and there seemed to be a lack of oil flow to the system. This indicated refrigerant shortage in the system, which is why we completed a Pressure Leak Test (PLT).
Works carried out:
- Isolated the Daikin VRV 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.
- 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.