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Elements and Performance Criteria

1. Prepare to diagnose a lift system fault
   • WHS/OHS workplace procedures for a given work area are identified and applied
2. Scope of work to be undertaken is determined from maintenance procedures, fault/breakdown reports and/or discussions with appropriate person/s
3. Advice is sought from the work supervisor to ensure the work is coordinated effectively with relevant others
4. Tools, equipment and testing devices needed to carry out the work are obtained in accordance with workplace procedures and checked for correct operation and safety
5. Diagnose and rectify lift system faults
   • WHS/OHS risk control measures and workplace procedures for carrying out work activities are followed
6. Circuits/machines/plant are isolated in accordance with relevant industry standards and workplace procedures
7. Safety hazards resulting from the fault and/or breakdown are documented and risk control measures implemented in consultation with appropriate person/s
8. Diagnostics are applied to apparatus, equipment and systems to identify fault/s
9. Suspected fault scenarios are tested as cause/s of system fault
10. Cause of the fault is identified and appropriate person/s engaged to rectify the fault
11. Faults in the lift components of the system are rectified in accordance with apparatus and system industry operational standards
12. Apparatus, equipment and system/s are verified and tested to meet required industry standards
13. Unplanned situations are responded to in accordance with workplace procedures in a manner that minimises risk to personnel and equipment
14. Diagnosis and rectification activities are carried out efficiently without waste of materials or damage to apparatus, the environment or services using sustainable energy practices
15. Complete work and report fault diagnosis and rectification activities
    • Reusable, faulty or worn components are tagged and despatched for repair in accordance with workplace procedures
16. Rectification of faults is documented in accordance with workplace procedures
17. Rectification of faults is reported and appropriate person/s notified in accordance with workplace procedures

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment. Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:

releasing passengers from a lift which has become immobilised diagnosing and repairing faults in lift circuits and associated components for at least three types of lift circuits/components, including: governors brakes safety gear safety devices lift machines door components controllers replacing and/or adjusting lift equipment in at least three types of lift equipment as described below: electro-hydraulic lift electric traction lift passenger lift goods lift dealing with unplanned events applying relevant industry standards applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including using risk control measures diagnosing and rectifying faults, including: inspecting, testing and measuring live electrical work obtaining and checking tools, equipment, resources and testing devices using diagnostic methods following workplace procedures and instructions reporting fault diagnosis and rectification activities, including: completing documentation.

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Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

lift components and systems - electrical/electronic, including: traction lifts encompassing: lift control circuits (relay logic only): floor selector circuitry machine room control (selector) and well control (transducer) circuitry - direction slowing and stopping, re-levelling, door operator, acceleration, button, indicator/lantern, lights and emergency lights, travelling cables, key switch circuits, fans, main supply and power circuits safety circuits encompassing: type, operation and actuation landing door locks, car door locks, emergency stop, pit switch, car trap-door switch, fire service, car top switch, tappet switch, governor switch, and safety gear switch, reverse phase relay, phrase failure relay and limit switches maintenance, replacement and adjustment encompassing: electrical and electronic lift components - travelling cables, tachometers, selectors, encoders and transducers safety devices: overloads, circuit breakers, limit switches, terminal stopping, door protection, governors and safety gear/switches electrical layout/drawings and special requirements encompassing: lift code and AS/NZS 3000 Electrical installations (known as the Australian/New Zealand Wiring Rules) requirements specific lift symbols conduits trailing cable troughing colour coding and labelling segregation low voltage (LV)/extra-low voltage (ELV) telephone and communication cabling regulatory requirements and door lock wiring safety drive adjustment encompassing: emergency stop button speed governor reverse phase protection broken chain/step switch broken main drive switch drive access switch start pressure switch and landing guards/barriers lift components – electronic encompassing: encoders transducers electronic boards selectors rectifiers capacitors resistors processor board input/output (I/O) board drives - types, construction and operation encompassing: traction gearless types: speed/load characteristics, efficiency, application, brakes and electric prime mover (motor types and control) geared types: speed/load characteristics, efficiency, application, brakes and electric prime mover (motor types and control) other types of lifts (drum, rack and pinion, chain and screw) fault finding encompassing: visual inspection performance checks and application of fault-finding principles relevant diagnostic methods relevant fault scenarios relevant industry standards relevant job safety assessments or risk mitigation processes relevant manufacturer specifications and operating instructions for tools and equipment relevant rectification activities and procedures relevant tools, equipment and testing devices relevant WHS/OHS legislated requirements relevant workplace documentation, including fault reports, test results, authorisations, permits, parts/components, despatch and store records relevant workplace policies, procedures and instructions.

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