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Evidence Guide: UEERA0033 - Diagnose faults in complex HVAC/refrigeration control systems

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

 

UEERA0033 - Diagnose faults in complex HVAC/refrigeration control systems

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

Prepare to diagnose and rectify faults

  1. WHS/OHS requirements and workplace procedures are identified, obtained and applied
WHS/OHS requirements and workplace procedures are identified, obtained and applied

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

WHS/OHS risk control measures and procedures are followed

Completed
Date:

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Hazards not previously identified are documented and risk control measures devised and implemented in consultation with relevant person/s

Completed
Date:

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Extent of faults are determined from reports/documentation and/or discussions with relevant person/s

Completed
Date:

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Relevant person/s is consulted to ensure work is coordinated effectively with others involved on the worksite

Completed
Date:

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Tools, equipment and testing devices required to diagnose faults are obtained and checked for correct operation and safety in accordance with workplace procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Diagnose and rectify faults

  1. WHS/OHS risk control measures and workplace procedures for carrying out the work are followed
WHS/OHS risk control measures and workplace procedures for carrying out the work are followed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Need to test and measure live work is determined in accordance with workplace procedures and WHS/OHS requirements

Completed
Date:

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Circuits/machines/plant are checked and isolated in accordance with workplace procedures and WHS/OHS requirements

Completed
Date:

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Logical diagnostic methods, measurements and estimations are applied to diagnose control system faults in accordance with system operating parameters and operational requirements

Completed
Date:

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Suspected fault sources are tested to confirm source of system problems

Completed
Date:

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Fault causes are identified and appropriately competent person/s engaged to rectify the fault where it is outside the scope of the control system

Completed
Date:

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Faults in system components are rectified to return the refrigeration or HVAC system to its operational standard

Completed
Date:

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System is tested to verify that the system operates as intended and to specified requirements and operational standards

Completed
Date:

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Methods for resolving unplanned events are discussed with appropriate person/s in accordance with job specifications and requirements

Completed
Date:

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Methods for resolving unplanned situations are selected on the basis of safety and specified work outcomes

Completed
Date:

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Diagnosis and rectification activities are conducted without waste of materials, damage to apparatus, the surrounding environment and/or services using sustainable energy practices

Completed
Date:

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Complete and report fault diagnosis and rectification activities

  1. WHS/OHS work completion risk control measures and workplace procedures are followed
WHS/OHS work completion risk control measures and workplace procedures are followed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Worksite is made safe in accordance with workplace safety procedures

Completed
Date:

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Fault diagnosis and rectification activities are documented in accordance with workplace procedures

Completed
Date:

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Appropriate person/s is notified that system faults have been rectified in accordance with workplace procedures

Completed
Date:

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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

applying logical diagnostic methods

using fault scenarios to test the cause of system faults

identifying faults and competency needed to rectify them

rectifying faults in system controls

verifying that the system operates correctly

documenting fault rectification

dealing with unplanned events

applying relevant legislation, industry standards, codes of practice and regulations

applying relevant work health and safety (WHS)/occupational health and safety (WHS/OHS) requirements, including:

applying safe working practices

hazard identification and reporting

implementing risk control measures

determining need to test or measure live work

diagnosing faults in complex refrigeration or heating, ventilation and air conditioning (HVAC) control systems

isolating circuits/machines/plant

using relevant tools, equipment and testing devices.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

complex HVAC/refrigeration control systems, fault finding, safe working practices and relevant standards, codes and regulations, including:

control fundamentals, including:

control terminology

refrigeration system characteristics

HVAC system characteristics

control system characteristics

control system components

control system diagrams and symbols

product knowledge

types of control equipment, including:

electrical:

classification of circuits

two position control

floating control

sensors

controllers

flow control devices

control systems diagrams

electronic:

operating principles

sensors

controllers

control system diagrams

digital control systems, including:

computer-based control fundamentals:

definitions

principles

controller configuration:

equipment

zone level controllers

system level controllers

controller software:

operating software

application software

controller programming:

system diagrams

control diagrams

configuration

programming

initialisation

EMS and BMS

supervisory control and data acquisition (SCADA) system

lan and Bacnet

control systems applications, including:

refrigeration

air conditioning:

air handling system controls

ventilation

heating

building airflow system control

airflow control

singles and multi-zones

chiller/boiler and distribution system control (chilled water, boiler and distribution systems)

diagnostic methods, measurements and estimations

faults within scope of work

relevant manufacturer specifications

relevant WHS/OHS legislated requirements, including:

risk control measures

relevant workplace documentation

relevant workplace policies and procedures.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the UEE Electrotechnology Training Package Companion Volume Implementation Guide.

Diagnosing and rectifying faults in complex HVAC and refrigeration control systems must include at least the following:

four faults in complex refrigeration or HVAC control systems