What happens if a system is undercharged, and is pressure testing with Oxygen-Free Nitrogen (OFN) required?

If a system is found to be undercharged, standard industry practices should always be followed to identify and resolve the issue before any further work is carried out.

• Pre-Work Leak Testing:
  A qualified F-Gas engineer performs an initial leak test to confirm the system is operating at the correct refrigerant charge level before proceeding with any activity.
• Use of Industry-Standard Methods:
  If a leak is suspected or identified, established methods such as pressure testing with Oxygen-Free Nitrogen (OFN) should be used to locate and address the fault safely and effectively.
• Alignment with Existing Maintenance Practices:
  This approach mirrors the procedures already carried out by F-Gas contractors during routine maintenance visits (e.g. 6- or 12-month servicing), ensuring consistency and compliance with industry standards.

By confirming system integrity upfront, any pre-existing issues are identified early, helping to maintain safety, performance, and regulatory compliance.