Application
This unit of competency defines the skills and knowledge required to maintain and repair multistage, cascade and ultra-cold industrial refrigeration systems.
It applies to retrofitting existing multi-stage, cascade and/or ultra-cold industrial refrigeration systems; reconditioning components; returning to service and testing systems; and completing service reports for administrative action.
A Refrigerant Handling Licence must be held by any person who carries out work in relation to refrigeration and air conditioning equipment.
Band: B
Unit Weight: 4
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, drawings, job sheets or work instructions | ||
2 | Undertake preventive maintenance checks/ adjustments | 2.1 | Check the temperature, pressure and properties of the system for conformance to specification |
2.2 | Check the noise/vibration levels of the system for conformance to specification | ||
2.3 | Perform preventative maintenance tasks according to manufacturers' specifications using refrigeration techniques/practices | ||
3 | Undertake fault-finding | 3.1 | Identify system components |
3.2 | Interpret the characteristics and operation of each component | ||
3.3 | Inspect and test the operational function of each component and assess correct operation against specification | ||
4 | Repair/replace faulty components | 4.1 | Localise faulty components and confirm malfunction |
4.2 | Remove the refrigerant safely from the system and contain in accordance with procedures and regulatory requirements, where appropriate | ||
4.3 | Dismantle faulty components and repair to manufacturers' specifications, as required | ||
4.4 | Select replacement parts from manufacturers' catalogues | ||
5 | Return to service multistage, cascade and/or ultra-cold refrigeration systems | 5.1 | Reassemble components and test for correct operation and assess against specification |
5.2 | Charge the system safely with correct refrigerant and in accordance with procedures and regulatory requirements, where appropriate | ||
5.3 | Verify correct operation of the equipment | ||
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. | |
Test equipment includes one (1) or more of the following: | measuring instruments/equipment for checking: temperatures pressures properties noise and vibration levels multimeter ampmeter insulation resistance tester |
Preventative maintenance tasks include one (1) or more of the following: | check/adjust fan belts check/clean filters check/clean heat exchangers (evaporator and condenser) overhaul of major system components cleaning of major system components testing operation of all safety devices |
Competency Field
Maintenance and diagnostics