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Evidence Guide: MEM18092 - Maintain and repair commercial and/or industrial refrigeration and/or air conditioning controls

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

 

MEM18092 - Maintain and repair commercial and/or industrial refrigeration and/or air conditioning controls

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

Determine job requirements

  1. Follow standard operating procedures (SOPs)
Follow standard operating procedures (SOPs)

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Comply with work health and safety (WHS) requirements at all times

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify job requirements from specifications, drawings, job sheets or work instructions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Install/replace refrigeration/air conditioning controls

  1. Identify control circuit components and inspect for compliance to specification
Identify control circuit components and inspect for compliance to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Undertake sequential installation according to manufacturers' specifications and procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check and adjust refrigeration/air conditioning control sequence and operation

  1. Check the temperature, quality, pressure and properties of the air delivered by the air conditioning system for conformance to specification
Check the temperature, quality, pressure and properties of the air delivered by the air conditioning system for conformance to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check controls operation against operational specifications using appropriate test equipment and application principles/techniques

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform adjustments to control sequence to meet/align to operational requirements and specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record modifications/alterations and report according to SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check controls operation and return to service to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fault find refrigeration/air conditioning control circuits

  1. Identify and inspect control circuit components
Identify and inspect control circuit components

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Trace control circuit and diagnose action of components to identify and localise faults

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Test control circuit parts using appropriate test equipment and application principles

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess control circuit parts against operational specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Localise fault condition at the component level, evaluate faulty condition, analyse root cause and plan corrective action

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain, repair/replace control components

  1. Apply correct maintenance procedures according to procedures
Apply correct maintenance procedures according to procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Use appropriate tools, equipment and techniques to test faulty items and repair or replace using sequential installation procedures according to manufacturers' specifications

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select replacement items from manufacturers' catalogues

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Reassemble control components according to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check and adjust sequence of refrigeration/air conditioning controls

  1. Identify sensors and controllers
Identify sensors and controllers

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Make necessary adjustments to sequence control circuit and check correct operation to meet operational specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Return refrigeration/air conditioning controls to service to specification

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Adopt appropriate follow-up procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Complete service/maintenance report in accordance with SOPs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge
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.

Control sequencing includes one (1) or more of the following:

programmable logic controllers (PLCs)

relay logic control systems

unitised/modular sensors

transducers

timers

counters

associated equipment

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

pressure gauges

multimeters

ampmeters

insulation resistance tester

cable analyser

Modifications/alterations include (1) one or more of the following:

pressure control settings

timer settings

thermostat settings

Corrective action includes one (1) or more of the following:

replacement

repair

adjustment

Maintenance procedures include the following:

overhaul of major system components

cleaning of major system components

testing operation of all control and safety devices