UEERA0064 - Recover, pressure test, evacuate, charge and leak test refrigerants - split systems

For Melbourne campuses

Assessment tasks will be designed to reinforce & extend knowledge and skill competence within set & controlled parameters in accordance with each unit’s learning outcomes & performance criteria requirements, incl the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines.
Students will be expected to demonstrate the following required skills:
* applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including:
* identifying hazards
* risk control measures
* using personal protective equipment (PPE)
* applying safe working practices and relevant legislation, industry standards, codes of practice and regulations
* completing required documentation, including reporting refrigerant recovery, pressure and leak tests, evacuations, charging refrigerant work and system operating conditions determining basic operating conditions, including:
* ambient, evaporation and condensing temperatures
* evaporator and condenser temperature differences
* suction and discharge pressures
* recovering, pressure testing, evacuating, charging and leak testing refrigerant in newly installed split systems to requirements using appropriate equipment, tools and measurement devices
* starting up system and performing function checks
* selecting, obtaining and checking relevant equipment, materials, tools and testing devices required to carry out the work, including:
* A1, A2 and A2L class refrigerants, lubricants and charging equipment
* oxygen-free dry nitrogen cylinder and regulator
* pressure and temperature measurement devices
* pressure testing and refrigerant leak testing equipment and tools
* refrigeration evacuation equipment and measuring equipment suitable for A1, A2 and A2L class refrigerants
* refrigerant recovery/reclaim equipment suitable for A1, A2 and A2L class refrigerants
* refrigeration hand and power tools
* refrigeration service tools
* single head split air conditioning systems
* using lubricants and cleaning materials safely in accordance with safety data sheets (SDS)/material safety data sheets (MSDS).

Students will also be expected to demonstrate the following knowledge:
* equipment and procedures for working with refrigerants, including:
* charging refrigerant into a newly installed split system detecting refrigerant leaks (electronic, bubbles and halide for R22)
* contaminant detection and removal
* evacuating newly installed split systems
* pressure testing systems newly installed split systems using dry nitrogen
* reclaiming/recovering refrigerants using recovery units and recovery cylinders
* heat and heat transfer
* leak detectors types, applications, operation and procedures
* manifold gauges types, applications, operation and procedures
* pressure temperature relationships and charts
* pressure, units and measurement
* refrigerant conditions, including saturation, superheat and sub-cooling
* relative humidity, unit and measurement
* relevant industry standards, codes of practice and regulations, including WHS/OHS legislated requirements
* relevant manufacturer specifications
* relevant risk mitigation processes, including risk control measures
* safe working practices, safe handling and SDS/MSDS
* sensible and latent heat
* split heat pump Class A1, A2 and A2L refrigerant types, properties and applications
* split heat pump refrigerant oil types, properties and applications
* sustainable energy principles and practices, including:
* environment protection requirements
* sustainable energy practices
* sustainable resources
* system access fittings types, applications, operation and procedures
* temperature, units and measurement
* vapour compression cycle, basic operation and major system components.