This unit covers locating and rectifying faults in equipment and components using up to 1000 volts a.c./1500 volts d.c. single and multi-phase power where these are disconnected from the electrical supply.

Work performed in situ.

This unit includes basic mechanical disconnection, dismantling and re-assembly of equipment components, enclosures, drives etc.

When work involves disconnection and reconnection of fixed-wired equipment, Unit MEM18049C (Disconnect/reconnect fixed wired equipment up to 1000 volts a.c./1500 volts d.c.) must also be selected.

Where work involves up to 250 V single phase supply only, Unit MEM18045B (Fault find/repair electrical equipment/components up to 250 volts single phase supply) should be selected.

Band: A

Unit Weight: 10

Path 1

MEM09002B

Interpret technical drawing

MEM10002B

Terminate and connect electrical wiring

MEM12002B

Perform electrical/electronic measurement

MEM12023A

Perform engineering measurements

MEM18001C

Use hand tools

MEM18002B

Use power tools/hand held operations

ELEMENT

PERFORMANCE CRITERIA

1. Locate fault

1.1. Equipment/component function is determined and understood by reference to circuit diagrams, schematics, manual and/or consultation with technical adviser.

1.2. Where appropriate, built-in fault indicators and error codes are examined and correctly interpreted, and results are recorded to standard operating procedures.

1.3. Where required, equipment is correctly isolated from power supply.

1.4. Equipment/component is checked and tested using correct and appropriate techniques, procedures, tools and test equipment.

1.5. Check and test results are correctly interpreted and, where required, verified.

1.6. Equipment/component fault is identified and localised.

1.7. Equipment/component fault/s are correctly recorded to standard operating procedures.

2. Rectify fault(s)

2.1. Using correct and appropriate techniques, procedures, tools and equipment, equipment/component/s are repaired, replaced or adjusted to specifications or manufacturers' requirements.

2.2. Equipment/component is checked and tested using correct and appropriate techniques, procedures tools and equipment for compliance with site or manufacturers' specifications.

2.3. Where appropriate, rectifications report is recorded to standard operating procedures.

Required skills

Look for evidence that confirms skills in:

using diagnostic skills to identify correct and faulty operation

interpreting and using circuit diagrams, specifications

isolating electrical equipment/components from the power supply

tagging isolated electrical equipment/components

checking electrical equipment/components for isolation from the power supply

locating and reading/recording built-in fault indicators

obtaining error code interpretation documents

checking and testing electrical equipment/components for correct operation

verifying variations from specifications indicated by initial test results

identifying and localising faults in electrical equipment/ components

recording/reporting faults in electrical equipment/components

repairing, replacing or adjusting electrical equipment/components to specification

referencing supplier catalogues

using test instruments to confirm that electrical equipment/components are operating to specification

recording rectification of the electrical equipment/ components

Required knowledge

Look for evidence that confirms knowledge of:

function of the electrical equipment/component within the circuit

hazards associated with the electrical equipment/component

relevant regulatory requirements

electrical equipment/component isolation procedures

test equipment to be used to verify isolation of the electrical equipment/circuit

errors indicated by built-in devices

procedures for testing electrical equipment/components for correct operation

tools, equipment and techniques to be used to test the operation of the electrical equipment/component

reasons for selecting the chosen tools, equipment and techniques

specifications of the electrical equipment/component

variations between test results and specifications

procedures for localising faults in electrical equipment/components

procedures for recording/reporting faults in electrical equipment/components

appropriate techniques/procedures for returning the electrical equipment/components to specification

specifications of the electrical equipment/components

adjustments that can be made to electrical equipment/components

procedures for confirming the electrical equipment/components have been returned to specification

procedures for recording electrical equipment/component rectification

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to Fault find/repair electrical equipment/components up to 1000 volts a.c./1500 volts d.c. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with fault finding/repair of electrical equipment/components up to 1000 volts a.c./1500 volts d.c., or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Equipment

Single and multi phase motor drive and heating appliances, relays, coils, transformers, thermostats, gauges, illuminating devices, switches, circuit fuses and breakers, etc. using up to 1000 volts a.c.1500 volts d.c. power supplies on non-interconnected circuits

Components

Brushes, armatures, windings, contactors, relays, programmable controllers or other electronic switching devices, switches, fuses, circuit breakers, relays, transformers, semi-conductor devices, regulators, motors, etc.

Appropriate fault finding techniques

Testing for voltage, current, frequency, polarity, phase, circuit continuity, insulation resistance, earth continuity etc.

Test equipment

Continuity testers, ammeters, voltmeters, multimeters, tong testers, wattmeters, cathode ray oscilloscopes etc.

Unit sector

Maintenance and diagnostics

This unit contains employability skills.