Replace Sight Glass and Pressure Leak Test on a York Chiller
Job Description: Replace Sight Glass and Pressure Leak Test on a York Chiller
Area: Charles II Street, London
Issue Identified: Following a recent maintenance visit, our engineer found the system to be leaking from the sight glass on the liquid line, he noted the system required a pressure test and a new sight glass. The engineer also advised that the chiller required all contactors to be replaced due to pitting.
Works carried out:
- Isolated the unit electrically and mechanically.
- Recovered any remaining refrigerant.
- Weighed and confirmed the charge.
- Replaced the sight glass.
- Pressure tested with OFN (oxygen free nitrogen) to locate leak.
- Repaired the leak by means of brazing.
- Once proved release OFN to the atmosphere and evacuated the system to a minimum of 2 Torr.
- Re-charged with recovered refrigerant, and trim charged with virgin refrigerant.
- Replaced the contactors.
- Test ran and commissioned.
- Completed waste transfer note and handed to on-site representative.
- Completed F Gas certificate.