York YCAL Chiller Pressure Leak Test and Repairs
Job Description: York YCAL Chiller Pressure Leak Test and Repairs
Area: Mark Lane, London
Issue Identified: Following a recent maintenance our engineer discovered circuit 1 was short of refrigerant and required a pressure leak test.
Works carried out:
- Isolated the York Chiller unit electrically and mechanically.
- Recovered refrigerant into certified cylinder for storage on site.
- Weighed and confirmed the charge.
- Pressure tested with OFN (oxygen free nitrogen) to locate any possible leak.
- Leak found on discharge shut off valve, repaired and re-pressure tested
- 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 commissioned.
- Completed waste transfer note and handed to on-site representative.
- Completed F Gas records.

ACES Group Can Also Supply and Install New York Chillers – Call Us On 01865 890996
Features and advantages of the York Chiller
The benefits of a York Chiller are reduced emissions, greater flexibility, more sustainable and better control. Designed for temperature sensitive operations such as data centres, manufacturing, and hospitals. ACES have a team of highly trained York specialist engineers. We offer a 24/7 service with most of our engineers based in London.

Some of the many York Chillers we support
- YCAL Scroll Chiller
- YLAA Scroll Chiller
- YVAA Variable Speed Drive Screw Chiller
- YVFA Free Cooling Variable Speed Screw Chiller
- YCIV Variable Speed Drive Screw Chiller
- YHAU-C Single Effect Steam Absorption Chiller
- YHAU-CW Double Effect Steam Fired Absorption Chiller
- YHAU-CG/CA-CXR Double Effect Direct Fired Chiller/Heaters
- YHAU-CG/CA Double Effect Direct Fired Chiller/Heaters
- YHAU-CL/CH Single Effect Hot Water Absorption Chiller
- YHAP-C Absorption Heat Pump
- YCUL Air-cooled Scroll Condensing Unit
- YLUA Air-cooled Scroll Condensing Unit
- YMC² Magnetic Bearing Centrifugal Chiller
- YZ Magnetic Bearing Centrifugal Chiller
- YK Centrifugal Chiller
- YVWA Variable Speed Screw Chiller
- YCWL Scroll Chiller
- YK-EP Centrifugal Chiller With Economizer
- YST Steam Turbine Centrifugal Chiller
- Titan OM Custom Design Centrifugal Chiller
- CYK Compound Centrifugal Chiller/Heat Pump
- YD Dual Centrifugal Chiller
Abbreviations
HVAC – Heating, Ventiliation and Air Conditioning, PLT – Pressure Leak Test, PRV – Pressure Relief Valve, PPM – Planned Preventative Maintenance, OFN – Oxygen Free Nitrogen, AHU – Air Handling Unit, GWP – Global Warming Potential, VRF – Variable Refrigerant Flow, VRV – Variable Refrigerant Volume, ACU – Air Conditioning Unit, FCU – Fan Coil Unit, AC – Air Conditioning, HP – High Pressure, LP – Low Pressure