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Evidence Guide: UEERA0084 - Service and repair self-contained flammable refrigerants air conditioning and refrigeration 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

 

UEERA0084 - Service and repair self-contained flammable refrigerants air conditioning and refrigeration systems

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

Prepare to service and repair flammable refrigerants refrigeration and air conditioning systems

  1. WHS/OHS hazards, risk control methods, relevant standards, codes and legislation are obtained and applied
WHS/OHS hazards, risk control methods, relevant standards, codes and legislation are obtained and applied

Completed
Date:

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Hazards not previously identified are reported and advice on risk control measures sought from supervisor

Completed
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Details of the work are obtained from documentation and/or from supervisor to determine the scope of work to be completed

Completed
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Advice is sought from supervisor, as required, to ensure work is coordinated effectively with others

Completed
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Materials required for the work are identified and obtained in accordance with workplace procedures

Completed
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Tools, equipment and testing devices required for the work are obtained and checked for correct operation and safety in accordance with workplace procedures

Completed
Date:

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Repair and service flammable refrigerants refrigeration and air conditioning systems

  1. Measuring system operating parameters are conducted in accordance with WHS/OHS requirements and workplace safety procedures
Measuring system operating parameters are conducted in accordance with WHS/OHS requirements and workplace safety procedures

Completed
Date:

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Checks are conducted to ensure system/component parts are isolated, as required, in accordance with workplace procedures and WHS/OHS requirements

Completed
Date:

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Refrigerant is removed from system safely in accordance with relevant legislation, standards and code requirements, manufacturer instructionsand workplace procedures

Completed
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Pressure testing is conducted and precautions taken to prevent damage to components in accordance with workplace procedures and WHS/OHS requirements

Completed
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Pressure testing is conducted at a pressure compatible with flammable refrigerants in accordance with industry standards and WHS/OHS requirements

Completed
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System leaks are located and rectified using testing methods appropriate to the system in accordance with industry standards and workplace procedures

Completed
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System is evacuated for an operational flammable refrigerant system in accordance with relevant industry standards and workplace procedures

Completed
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System is charged safely with flammable refrigerants and compatible lubricants in accordance with relevant legislation, standards and code requirements, manufacturer instructionsand workplace procedures

Completed
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Actual and specified range of operating conditions are determined from measured and calculated values as they apply to flammable refrigerants vapour compression systems in accordance with workplace procedures and industry standards

Completed
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Methods for dealing unplanned situations are discussed, as required, with relevant person/s for approval and documented in accordance with workplace procedures

Completed
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Operating conditions are determined without damage to apparatus, circuits, the surrounding environment and/ or services using sustainable energy practices

Completed
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Complete and report servicing and repairing flammable refrigerants refrigeration and air conditioning systems

  1. Worksite is cleaned and made safe in accordance with workplace procedures
Worksite is cleaned and made safe in accordance with workplace procedures

Completed
Date:

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Contaminated refrigerant and lubricant are dealt with in accordance with legislative/regulatory and industry standards and requirements

Completed
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Operation conditions are documented and include identification of any parameter that is not within the specified range for the system

Completed
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Work supervisor is notified of work completion in accordance with workplace procedures

Completed
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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 two separate occasions and include:

applying relevant work health and safety (WHS)/occupational health and safety (OHS) requirements, including using risk control measures

charging the system with the appropriate type and quantity of flammable refrigerants

completing documentation

completing work and reporting on servicing and repairing flammable refrigerants refrigeration and air conditioning systems

conducting pressure testing at the appropriate pressure level and without damaging components

dealing with unplanned events

evacuating the system to the required standard and using appropriate vacuum measuring instruments

locating and rectifying leaks

obtaining and recording measurements

preparing to service and repair flammable refrigerants refrigeration and air conditioning systems

removing and storing refrigerant correctly

selecting appropriate materials and equipment

servicing and repairing flammable refrigerants refrigeration and air conditioning systems.

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:

charging requirements and procedures

compressor lubricant types, applications and safe handling

evacuation requirements and procedures

flammable refrigerant (A2, A2L and A3) types, applications, dangers, safe handling, storage and transport

flammable refrigerant refrigeration and air conditioning systems, components and operating conditions

leak detection requirements and procedures

pressure testing requirements and procedures

refrigerant removal/recovery and flushing requirements and procedures

relevant job safety assessments or risk mitigation processes

relevant legislation, industry standards and codes of practice, including hazards associated with flammable refrigerants

relevant manufacturer specifications

relevant WHS/OHS legislated requirements

relevant workplace documentation

relevant workplace policies and procedures

system access tools and procedures

tube joining tools 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.

Servicing and repairing self-contained A2, A2L and A3 flammable refrigerant air conditioning and refrigeration systems must include at least the following:

determining operating conditions using measurement and basic calculation methods, including suction and discharge pressures; ambient, evaporator and condensing temperatures; and evaporator and condenser temperature differences

recovering refrigerant, replacing components, testing pressure, evacuating, charging and leak testing a flammable refrigerant system in a safe and environmentally responsible manner

one self-contained flammable refrigerant air conditioning or refrigeration system