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Elements and Performance Criteria

1. Prepare to diagnose and repair electronic over hydraulic control system
   • Job requirements are determined from workplace instructions
   • Diagnostic information is sourced and interpreted
   • Diagnostic options are analysed and those most appropriate to the circumstances are selected
   • Hazards associated with the work are identified and risks are managed
   • Diagnostic tools and equipment are selected and checked for serviceability
2. Diagnose electronic over hydraulic control system
   • Diagnostic tests are carried out according to manufacturer specifications, workplace procedures and safety requirements
   • Faults are identified from diagnostic test results and causes of faults are determined
   • Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures
3. Repair electronic over hydraulic control system
   • Repair information is sourced and interpreted
   • Repair options are analysed and those most appropriate to the circumstances are selected
   • Repair tools, equipment and materials are selected and prepared
   • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures and safety requirements, and without causing damage to components or systems
   • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
4. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and 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 according to workplace procedures
   • Workplace documentation is processed according to workplace procedures
5. Prepare to diagnose and repair electronic over hydraulic control system
   • Job requirements are determined from workplace instructions
   • Diagnostic information is sourced and interpreted
   • Diagnostic options are analysed and those most appropriate to the circumstances are selected
   • Hazards associated with the work are identified and risks are managed
   • Diagnostic tools and equipment are selected and checked for serviceability
6. Diagnose electronic over hydraulic control system
   • Diagnostic tests are carried out according to manufacturer specifications, workplace procedures and safety requirements
   • Faults are identified from diagnostic test results and causes of faults are determined
   • Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures
7. Repair electronic over hydraulic control system
   • Repair information is sourced and interpreted
   • Repair options are analysed and those most appropriate to the circumstances are selected
   • Repair tools, equipment and materials are selected and prepared
   • Repairs and component replacements and adjustments are carried out according to manufacturer specifications, workplace procedures and safety requirements, and without causing damage to components or systems
   • Post-repair testing is carried out according to workplace procedures to confirm fault rectification, and any further problems detected as having been introduced during the repair process are rectified
8. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and 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 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: working with high pressure fluid hazards isolating and stabilising machines.

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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:

diagnose and repair a fault in electronic over hydraulic control system components as follows:

all four of the following:

hydraulic proportional control solenoids (flow, pressure and directional)

joysticks, potentiometer or touchscreens

sensors and feedback devices

electronic control amplifier units

one of the following:

electronic over hydraulic circuitry

servo control valves (flow, pressure and directional)

electronic control unit (ECU).

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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 diagnosing and repairing electronic over hydraulic control systems, including procedures for:

working with high pressure fluid hazards

isolating and stabilising machines

operating principles of electronic over hydraulic systems and associated components, including operating principles of flow, pressure and directional control in:

electronic open loop circuits

electronic semi open loop circuits

electronic closed loop circuits

application, purpose and operation of electronic over hydraulic control systems and components, including:

hydraulic proportional control solenoids

servo control units

sensors

feedback devices

electronic control amplifier units

joysticks

electronic control units

electronic over hydraulic circuitry

diagnostic testing procedures for electronic over hydraulic control systems, including:

electronic system analysis while using industry-relevant test equipment

component wear analysis

system operation analysis

procedures for inspecting and evaluating the following components:

proportional control valves

servo control units

electronic control units

sensors

feedback devices

repair procedures for electronic over hydraulic control systems, including procedures for:

testing electronic devices

replacing electronic devices and adjusting the following:

maximum and minimum flow points

dither

opening ramps

closing ramps

post-repair testing procedures for electronic over hydraulic control systems.

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