Climaveneta Chiller Investigations and Replacement of Expansion Valve
Job Description: Climaveneta Chiller Investigations and Replacement of Expansion Valve
Area: Eldon Street, London
Issue Identified: Chiller 1 – Circuit 1, sight glass in the compressor was flashing and required investigation.
Chiller 2 – Circuit 2, required new expansion valve
Additional benefits were: Works on both chillers were carried out one after the other to minimise disruption to the building.
Works carried out:
Chiller 1
- Isolated the Climaveneta Chiller Unit electrically and mechanically.
- Recovered refrigerant from the Climaveneta Chiller Unit.
- Weighed and confirmed the charge.
- Pressure tested with OFN (oxygen free nitrogen) to locate leak.
- Repaired leaks by means of brazing.
- Re-pressure tested with OFN (oxygen free nitrogen) to prove system is leak tight and sight glass was no longer flashing.
- Once proved released OFN to atmosphere and evacuated system to a minimum of 2 Torr
- Re-charged with recovered refrigerant and trim charged with virgin refrigerant.
- Test ran and commissioned.
Chiller 2
- Isolated the Climaveneta Chiller Unit electrically and mechanically.
- Recovered refrigerant from the Climaveneta Chiller Unit.
- Weighed and confirmed the charge.
- Removed and replaced expansion valve and filter drier cores.
- Pressure tested with OFN (oxygen free nitrogen) to prove system was leak tight.
- Once proved released OFN (oxygen free nitrogen) to atmosphere and evacuated system to a minimum of 2 Torr
- Re-charged with recovered refrigerant and trim charged with virgin refrigerant.
- Test ran and re-commissioned.
- Completed waste transfer notes and handed to on-site representative.
- Completed F Gas Records