Application
This unit of competency defines the skills and knowledge required to perform the selection, maintenance, repair/replacement and adjustment of refrigerant flow controls, either liquid or vapour (mechanical or electronic types) to achieve desired operational performance.
The associated equipment includes controllers and/or valves required to ensure proper operation of the flow device.
Where the interpretation of technical drawings is required unit MEM09002 Interpret technical drawing should also be selected.
Where rectification, modification involving electrical disconnection and reconnection is required unit MEM18049 Disconnect/reconnect fixed wired equipment up to 1000 volts a.c./1500 volts d.c. should also be selected.
A Refrigerant Handling Licence must be held by any person who carries out work in relation to refrigeration and air conditioning equipment.
Band: A
Unit Weight: 6
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. | ||
1 | Determine job requirements | 1.1 | Follow standard operating procedures (SOPs) |
1.2 | Comply with work health and safety (WHS) requirements at all times | ||
1.3 | Use appropriate personal protective equipment (PPE) in accordance with SOPs | ||
1.4 | Identify job requirements from specifications, job sheets or work instructions | ||
2 | Undertake preventative maintenance checks on refrigerant flow controls | 2.1 | Identify the location and interpret the operational parameters of the refrigerant control |
2.2 | Carry out visual inspection and testing with appropriate test equipment by following refrigeration principles, procedures and safety requirements | ||
2.3 | Identify the refrigerant type | ||
3 | Undertake fault finding on refrigerant flow controls | 3.1 | Identify and interpret flow control and its characteristics |
3.2 | Inspect, test and assess the operational function of the flow control and associated valves using appropriate test equipment and techniques against specifications | ||
4 | Repair or replace refrigerant flow control | 4.1 | Select for replacement/repair appropriate flow control or components relevant to system operation using manufacturers' catalogues and specifications |
4.2 | Remove and safely contain the refrigerant from the system in accordance with refrigeration principles and procedures and relevant standards and codes | ||
4.3 | Dismantle faulty components and repair/replace to manufactures' specifications, as required | ||
4.4 | Select replacement parts from manufactures catalogues | ||
5 | Return to service refrigerant flow control | 5.1 | Evacuate system and recharged with refrigerant safely, in accordance with refrigeration principles and procedures and relevant standards and codes |
5.2 | Leak test system and adjust flow control to manufacturers' specifications | ||
5.3 | Undertake performance check and return to service | ||
5.4 | Complete maintenance records/service reports according to SOPs and legislative requirements | ||
Foundation Skills
This section describes those required skills (reading, writing, oral communication and numeracy) that are essential to workplace performance in this unit of competency.
Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.
Range Statement
This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. | |
Associated valves include one (1) or more of the following: | check valves solenoid valves |
Test equipment includes one (1) or more of the following: | refrigeration gauges thermometers multimeter vacuum pump leak detector associated hand tools specialised hand tools |
Performance incudes: | pressures, temperatures and relationships |
Competency Field
Maintenance and diagnostics