AURPTA011
Diagnose and repair pumping systems


Application

This unit describes the performance outcomes required to diagnose and repair faults in the pumping systems of outdoor power equipment according to manufacturer specifications. It involves preparing for the task, selecting the correct diagnostic procedure, carrying out the diagnosis and the repair, performing post-repair testing, and completing workplace processes and documentation.

It applies to those working in the automotive service and repair industry. The pumping systems are those of outdoor power equipment and include:

centrifugal pumps used for firefighting, irrigation and water transfer

diaphragm pumps used in orchard spraying

high pressure piston pumps used for pressure cleaners

No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.


Elements and Performance Criteria

Elements

Elements describe the essential outcomes.

Performance Criteria

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section.

1. Prepare to diagnose and repair outdoor power equipment pumping system

1.1 Job requirements are determined from workplace instructions

1.2 Diagnostic information is sourced and interpreted

1.3 Diagnostic options are analysed and those most appropriate to the circumstances are selected

1.4 Hazards associated with the work are identified and risks are managed

1.5 Diagnostic tools and equipment are selected and checked for serviceability

2. Diagnose pumping system

2.1 Diagnostic tests are carried out according to manufacturer specifications, workplace procedures and safety requirements

2.2 Faults are identified from diagnostic test results and causes of faults are determined

2.3 Diagnosis findings, including recommendations for necessary repairs or adjustments, are reported according to workplace procedures

2.4 Obtain authorisation to proceed according to workplace procedures

3. Repair pumping system

3.1 Repair information is sourced and interpreted

3.2 Repair options are analysed and those most appropriate to the circumstances are selected

3.3 Repair tools, equipment and materials are selected and checked

3.4 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

3.5 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

4.1 Final inspection is made to ensure work is to workplace expectations and system is presented ready for use, including protective guards, cowlings and safety features

4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected

4.3 Tools and equipment are checked and stored according to workplace procedures

4.4 Workplace documentation is processed according to workplace procedures

Evidence of Performance

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 the following three pumping systems:

one centrifugal pumping system

one high pressure piston pumping system

one diaphragm pumping system.


Evidence of Knowledge

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 pumping systems, including procedures for:

starting and operating pumping systems

working with exhaust fume hazards

working with 240 volt equipment

operating principles of positive and non-positive displacement pumping systems and associated components

application, purpose and operation of the following pumping systems and components, including:

centrifugal pumps used for firefighting, irrigation and water transfer

high pressure piston pumps used in pressure cleaners

diaphragm pumps used in orchard spraying

types of lubricants, and associated application and methods of lubrication

diagnostic testing procedures for pumping systems, including:

testing system for pressure, suction and discharge

isolating faults, including internal and external leakage

repair procedures for pumping systems, including:

dismantling, inspecting and evaluating, replacing and adjusting the following pumping system components:

filters and strainers

hose and pipe fittings and attachments

overload devices

protective guards and cowlings

handle assembly

lubrication systems

drive systems

mounting brackets and frame

assembling pumping system and completing operational tests

post-repair testing procedures for pumping systems.


Assessment Conditions

Assessors must satisfy NVR/AQTF assessor requirements.

Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.

Assessment must include direct observation of tasks.

Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to the pumping systems that they have worked on, e.g. repair orders.

Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.

The following resources must be made available:

automotive repair workplace or simulated workplace

workplace instructions

manufacturer specifications for pumping systems

area for safely testing pumping systems

pressure gauge

three pumping systems specified in the performance evidence with faults

tools, equipment and materials appropriate for diagnosing and repairing pumping systems.


Foundation Skills

This section describes those language, literacy, numeracy and employment skills that are essential to performance and are not explicit in the performance criteria.

Skills

Description

Learning skills to:

locate appropriate sources of information efficiently.

Reading skills to:

interpret information from manufacturer and workshop literature when seeking pumping system specifications and procedures.

Writing skills to:

legibly and accurately fill out workplace documentation when reporting diagnostic findings, making repair recommendations, and recording parts and material used.

Oral communication skills to:

clarify instructions

report diagnostic findings and make repair recommendations.

Numeracy skills to:

measure pumping system components and use basic mathematical operations, including addition, subtraction, multiplication and division, to calculate distances, tolerances and deviations from manufacturer specifications

interpret pressure and flow volumes for pumping systems.

Planning and organising skills to:

plan own work requirements and prioritise actions to achieve required outcomes and ensure tasks are completed within workplace timeframes.

Technology skills to:

use pressure gauges to test pumping systems.


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.

Diagnostic information must include procedures relating to:

isolating faults, including internal and external leakage

dismantling, inspecting and evaluating pumping system components

testing pumping system for pressure, suction and discharge.

Safety requirements must include:

work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for:

starting and operating pumping systems

working with exhaust fume hazards

working with 240 volt equipment.

Post-repair testing must include:

running pumping system and checking operation against manufacturer specifications, workplace procedures, and safety and environmental requirements

making final adjustments and re-testing as required.


Sectors

Technical


Competency Field

Outdoor Power Equipment