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Evidence Guide: MEM18103 - Fault-find, test and rectify electrical circuits and equipment

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM18103 - Fault-find, test and rectify electrical circuits and equipment

What evidence can you provide to prove your understanding of each of the following citeria?

Determine job requirements

  1. Follow standard operating procedures (SOPs)
  2. Comply with work health and safety (WHS) requirements at all times, including appropriate risk control measures
  3. Use appropriate personal protective equipment (PPE) in accordance with SOPs
  4. Research the nature of the fault through checking of documentation and/or consultation with appropriate person/s
Follow standard operating procedures (SOPs)

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Comply with work health and safety (WHS) requirements at all times, including appropriate risk control measures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use appropriate personal protective equipment (PPE) in accordance with SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Research the nature of the fault through checking of documentation and/or consultation with appropriate person/s

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare to fault-find and rectify electrical circuits and equipment

  1. Obtain all necessary tools, equipment and testing instruments needed to conduct fault diagnosis and repair of electrical circuits and equipment
  2. Isolate and tag circuits and equipment in accordance with procedures
Obtain all necessary tools, equipment and testing instruments needed to conduct fault diagnosis and repair of electrical circuits and equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Isolate and tag circuits and equipment in accordance with procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fault-find and rectify electrical circuits and equipment

  1. Apply diagnostic techniques to locate faults in electrical circuits and equipment, including the use of specialised test equipment
  2. Dismantle equipment, where necessary, and repair/replace faulty items and reassemble using appropriate tools and equipment in accordance with manufacturer specifications and regulatory requirements
  3. Test repaired electrical circuits and equipment to ensure functionality and compliance
  4. Document reasons and all necessary repairs in accordance with SOPs
Apply diagnostic techniques to locate faults in electrical circuits and equipment, including the use of specialised test equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Dismantle equipment, where necessary, and repair/replace faulty items and reassemble using appropriate tools and equipment in accordance with manufacturer specifications and regulatory requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test repaired electrical circuits and equipment to ensure functionality and compliance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document reasons and all necessary repairs in accordance with SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare to fault find and rectify electrical circuits and equipment

  1. Obtain all necessary tools, equipment and testing instruments needed to conduct fault diagnosis and repair of electrical circuits and equipment
  2. Isolate and tag circuits and equipment in accordance with procedures
Obtain all necessary tools, equipment and testing instruments needed to conduct fault diagnosis and repair of electrical circuits and equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Isolate and tag circuits and equipment in accordance with procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fault find and rectify electrical circuits and equipment

  1. Apply diagnostic techniques to locate faults in electrical circuits and equipment, including the use of specialised test equipment
  2. Dismantle equipment, where necessary, and repair/replace faulty items and reassemble using appropriate tools and equipment in accordance with manufacturer specifications and regulatory requirements
  3. Test repaired electrical circuits and equipment to ensure functionality and compliance
  4. Document reasons and all necessary repairs in accordance with SOPs
Apply diagnostic techniques to locate faults in electrical circuits and equipment, including the use of specialised test equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Dismantle equipment, where necessary, and repair/replace faulty items and reassemble using appropriate tools and equipment in accordance with manufacturer specifications and regulatory requirements

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test repaired electrical circuits and equipment to ensure functionality and compliance

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Document reasons and all necessary repairs in accordance with SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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, including appropriate risk control measures

1.3.

Use appropriate personal protective equipment (PPE) in accordance with SOPs

1.4.

Research the nature of the fault through checking of documentation and/or consultation with appropriate person/s

2.

Prepare to fault find and rectify electrical circuits and equipment

2.1.

Obtain all necessary tools, equipment and testing instruments needed to conduct fault diagnosis and repair of electrical circuits and equipment

2.2.

Isolate and tag circuits and equipment in accordance with procedures

3.

Fault find and rectify electrical circuits and equipment

3.1.

Apply diagnostic techniques to locate faults in electrical circuits and equipment, including the use of specialised test equipment

3.2.

Dismantle equipment, where necessary, and repair/replace faulty items and reassemble using appropriate tools and equipment in accordance with manufacturer specifications and regulatory requirements

3.3.

Test repaired electrical circuits and equipment to ensure functionality and compliance

3.4.

Document reasons and all necessary repairs in accordance with SOPs

Required Skills and Knowledge

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, including appropriate risk control measures

1.3.

Use appropriate personal protective equipment (PPE) in accordance with SOPs

1.4.

Research the nature of the fault through checking of documentation and/or consultation with appropriate person/s

2.

Prepare to fault find and rectify electrical circuits and equipment

2.1.

Obtain all necessary tools, equipment and testing instruments needed to conduct fault diagnosis and repair of electrical circuits and equipment

2.2.

Isolate and tag circuits and equipment in accordance with procedures

3.

Fault find and rectify electrical circuits and equipment

3.1.

Apply diagnostic techniques to locate faults in electrical circuits and equipment, including the use of specialised test equipment

3.2.

Dismantle equipment, where necessary, and repair/replace faulty items and reassemble using appropriate tools and equipment in accordance with manufacturer specifications and regulatory requirements

3.3.

Test repaired electrical circuits and equipment to ensure functionality and compliance

3.4.

Document reasons and all necessary repairs in accordance with SOPs

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria on at least two (2) occasions and include:

following work instructions, standard operating procedures (SOPs) and safe work practices

identifying and interpreting circuits, drawings and specifications relevant to the work to be undertaken

determining the electrical and non-electrical isolation requirements to prevent the creation of hazards linked from the loss of machine/system/process control according to established procedures

using lock out tag procedures with appropriate tags/signs

proving electrical isolation and following established safety rules prior to working on electrical equipment or wiring

ensuring all electrical equipment and tools are tested and tagged and up to date

applying methodical diagnostic techniques and using safe working practices to fault find electrical circuits and equipment

using test equipment, including the use of multimeters, cathode ray oscilloscopes (CROs), signal/function generators and power supplies in diagnosing faults in electrical circuits and equipment

taking measurements and compare the results to the calculated value

dismantling, repairing and replacing faulty components and equipment using appropriate hand and power tools and engineering techniques

carrying out electrical tests for continuity and insulation resistance tests on single and three-phase appliances and equipment

repairing faulty electrical installation circuits, components and wiring to comply with relevant standards

retesting according to regulatory and legislative requirements

documenting all reasons and remedial action taken in accordance with SOPs.

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

safe work practices and procedures and use of personal protective equipment (PPE)

fault finding techniques, including:

visual inspection

signal injection and measurement

half split rule and component isolation

interpreting wiring and equipment circuits, drawings and specifications

test equipment for diagnosing faults including multimeters, ammeters, voltmeters, continuity testers, wattmeters and tong testers

specialised alternating current (AC) test equipment, including:

CRO and its operating features, interpreting a CRO screen, dual trace CROs and its advantage over a single trace CRO and CRO applications

signal, function generators and power supplies and their operating features and applications when fault finding AC circuits

diagnostic techniques, including testing for voltage, current, frequency, polarity, phase, circuit continuity, insulation resistance and earth continuity

wiring faults, including short circuit, open-circuit, high resistance, breakdown in insulation resistance, residual current device (RCD) tripping, transposition of conductors, earthing, loose connections and corrosion

power distribution, lighting control, signal and data, motor control and package unit control circuits

lighting faults, including switching, lamp holders, ballast, starter, capacitor, igniter, transformer, loose connections, poor contact, corrosion and lighting management systems

equipment faults in the following single-phase appliances:

hand held power tools, fridges, microwaves, hot water systems, TV’s, motors, air conditioning units, air compressors, portable pumps, pedestal drills, lathes, bench grinders, motors, fans and fan motors

equipment faults in the following three-phase appliances:

variable speed drives (VSDs), fan and pump motors, freezer units, welding machines, heaters, general commercial kitchen equipment, generators, air conditioning units, air compressors and air blowers

mechanical faults in motors, including bearings, fans, bent shaft, locked rotor, blocked air vents, centrifugal switches, slipping belts and environmental factors.

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.

Circuits include two (2) or more of the following:

power distribution

lighting control

distributed control system (DCS) instrument loop control

motor control

package unit control

Single circuit may be controlled by one or more devices and the output may control one or more devices

Complex circuit is defined as interdependent circuits and applies to interconnected electrical circuits where electrical equipment and/or components are connected electrically, that is there are multiple electrical power supplies or sources, voltages or circuits which are found in the control or switching of the circuit

Equipmentincludes three (3) or more of the following single and three-phase appliances:

single-phase appliances – hand held power tools, fridges, microwaves, TV’s, lighting, motors, air conditioning units, air compressors, portable pumps, pedestal drills, lathes, bench grinders, motors, fans and fan motors

three phase appliances – variable speed drives (VSDs), fan and pump motors, welding machines, freezer units, heaters, general commercial kitchen equipment, generators, air conditioning units, air compressors and air blowers

Diagnostic techniques include:

testing for voltage, current, frequency, polarity, phase, circuit continuity, insulation resistance and earth continuity

Test equipment includes one (1) or more of the following:

continuity testers

ammeters

voltmeters

multimeters

tong testers

wattmeters

cathode ray oscilloscopes (CROs)

Regulatory requirements include:

AS/NZS 3000:2007 Electrical installations (known as the Australian/New Zealand Wiring Rules

Safe working practices include:

demonstration of safe working practices and installation in accordance with industry established safe and sound practices