City & Guilds 2079-11 Refrigeration Handling, Category 1
Level 2 Certificate in F Gas and ODS Regulations
About this qualification
It is a legal requirement that all engineers who handle HFC type refrigerants have this qualification (or the Construction Skills equivalent).
The overall aim of the assessment is to ensure candidates:
- Handle refrigeration safely and with minimum loss to atmosphere
- Minimise refrigerant leakage and leak potential
- Maximise energy efficiency
This course is for engineers working on any size of system who will be accessing the system
for service and maintenance, charging and recovering refrigerant and leak testing. Delegates
would benefit from an existing understanding of refrigeration systems, principals and theory.
How am I assessed?
Assessment is by completion of observed practical exercises and online assessment to
Engineers are required to carry out the following procedures on a test rig:
- To identify stationary refrigerants, air conditioning and heat pump system components, functions and leakage risks.
- To fabricate and examine pipework and undertake pressure testing, evacuation, charging, recovery and record keeping.
- Braze a joint and install it in the system
- Pressure test the system for strength and leak tightness (including the brazed joint)
- Evacuate the system
- Charge a zeotropic blend (e.g. R404A), run the system, check the refrigerant state
- Carry out visual check for leaks, indirectly assess the system for low charge and leak test using an electronic leak detector
- Fit and disconnect gauges on the running system with service and Schrader valves
- Recover the refrigerant
- Drain oil from a compressor
The following topics are included in the online assessment:
- SI units of measure
- Basic refrigeration theory, pressure enthalpy charts, function of components, state of refrigerant in the system, operating conditions
- Monitoring system performance and indications of leakage
- Requirements of statutory regulation/legislation
- To identify the hazards and safe working practices for refrigerant handling (and relate to causes and effects of global warming and climate change)
- Record keeping
- Potential leak points
- Handling of contaminated refrigerant and oil
- Component function and associated leak risk
How long is the course?
This is a five day block course