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Elements and Performance Criteria

1. Prepare to inspect, service and repair DC electric motor drive system
   • Job requirements are determined according to workplace instructions
   • Inspection and servicing procedures are accessed and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and materials are selected and checked for serviceability
2. Inspect and test system
   • System is inspected and tested according to workplace procedures and safety requirements
   • Circuits are tested according to workplace procedures and without causing damage to components or systems
   • Inspection results are compared with manufacturer specifications
   • Inspection findings are reported according to workplace procedures, including recommendations for required repairs or adjustments
3. Service and repair system
   • System is serviced and repaired according to manufacturer and component specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems
   • System is performance tested and final adjustments are made
   • Post-repair testing is carried out to confirm system is operating to manufacturer specifications, any reported problems are resolved, and no other problems are present
4. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and vehicle, vessel or machinery is presented ready for use
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
   • Tools and equipment are checked and stored and any faulty electrical equipment is identified, tagged and isolated according to workplace procedures
   • Workplace documentation is processed according to workplace procedures
5. Prepare to inspect, service and repair DC electric motor drive system
   • Job requirements are determined according to workplace instructions
   • Inspection and servicing procedures are accessed and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and materials are selected and checked for serviceability
6. Inspect and test system
   • System is inspected and tested according to workplace procedures and safety requirements
   • Circuits are tested according to workplace procedures and without causing damage to components or systems
   • Inspection results are compared with manufacturer specifications
   • Inspection findings are reported according to workplace procedures, including recommendations for required repairs or adjustments
7. Service and repair system
   • System is serviced and repaired according to manufacturer and component specifications, workplace procedures, and safety and environmental requirements, and without causing damage to components or systems
   • System is performance tested and final adjustments are made
   • Post-repair testing is carried out to confirm system is operating to manufacturer specifications, any reported problems are resolved, and no other problems are present
8. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and vehicle, vessel or machinery is presented ready for use
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
   • Tools and equipment are checked and stored and any faulty electrical equipment is identified, tagged and isolated according to workplace procedures
   • Workplace documentation is processed according to workplace procedures

Range Statement

This section specifies 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. Bold italicised wording, if used in the performance criteria, is detailed below.

Safety requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for: selecting and using personal protective equipment (PPE), including clothing, and eye and hand protection working safely with high current electrical systems.

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Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

inspect, service and repair three of the following direct current (DC) electric motor drive systems in vehicles, vessels or machinery:

brush commutator motor

stepper motor assembly

brushless hall effect motor

magnetic flux array motor.

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Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to inspecting, servicing and repairing DC electric motor drive systems, including procedures for:

selecting and using personal protective equipment (PPE), including clothing, and eye and hand protection

working safely with high current electrical systems

operating principles of DC electric motor drive systems, including:

brush commutator motors, including of:

permanent magnet motor

series motor

shunt motor

compound motor

brushless motors, including:

stepper motors, including rotary position actuators

hall effect motor

magnetic flux array motors

application, purpose and operation of DC electric motor drive systems, including:

power operated windows, door and roofs

power operated seats, mirrors and radio antennas

winches and lifting platforms

rotary position actuators

brushless traction motors

magnetic flux array, including wheel hub motors

inspection procedures for DC electric motor drive systems, including analysing system operation

procedures for testing DC electric motor drive systems, including:

accessing electrical terminals and using test probes without damaging connectors, fuse holders or wiring

procedures for using and operating electrical test equipment, including:

digital multimeters

test lights and probes

oscilloscopes

service and repair procedures for DC electric motor drive systems, including:

component removal and replacement procedures

component and associated system adjustment procedures

post-repair testing procedures of DC electric motor drive systems, including:

confirming that system is operating to manufacturer specifications

confirming that no other problems are present as a result of the repair.

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