ICE PLANT REFRIGERATION SERVICING NC III – TESDA COURSE MODULE

TESDA TRAINING REGULATIONS FOR ICE PLANT REFRIGERATION SERVICING NC III COURSE

The TESDA Course in ICE PLANT REFRIGERATION SERVICING NC III consist of competencies that a person must achieve to enable him/her to install, troubleshoot, service and maintain ICE PLANT Refrigeration units and components. It includes recovery and recycling of refrigerant from the system.

This Qualification is packaged from the competency map of HVAC/R Sector.

A trainee or student who has achieved this TESDA Course in ICE PLANT REFRIGERATION SERVICING NC III is competent to be:

• Ice Plant Refrigeration Technician

TRAINEE ENTRY REQUIREMENTS

This section specifies the qualifications of trainees and educational experience. Other requirements like health and physical requirements are also stated. Passing entry written examinations may also be indicated if necessary.

Before entering this course, the learner:

• install PACU/CRE components, piping system, and electrical system
• service and maintain PACU/CRE
• troubleshoot PACU/CRE

ICE PLANT REFRIGERATION SERVICING NC III COURSE MODULE

Course Title: ICE PLANT REFRIGERATION SERVICING NC
Level: NC III
Nominal Training Duration :

(Basic Competency) 18 Hours
(Common Competency) 216 Hours
(Core Competency) 272 Hours

Total Duration: 506 Hours

This course is designed to equip individual with operational skills in ICE PLANT Refrigeration Servicing. It includes installation, servicing and maintaining, troubleshooting and repairing Ice Plant Refrigeration System.

COMPETENCIES REQUIRED IN ICE PLANT REFRIGERATION SERVICING NC III

To obtain this TESDA course in ICE PLANT REFRIGERATION SERVICING NC III, all units prescribed for this qualification must be achieved.

These units of competency comprising this qualification include the following:

UNIT CODE	CORE COMPETENCIES (272 Hours)
HVC723322	Survey Site for Installation of Ice Plant Refrigeration Equipment
HVC723323	Install Ice Plant Refrigeration Piping System
HVC723324	Install Ice Plant Refrigeration Electrical System
HVC723325	Install Ice Plant Refrigeration Equipment
HVC723326	Service and Maintain Ice Plant Refrigeration System
HVC723327	Troubleshoot Ice Plant Refrigeration System
HVC723328	Recover And Recycle Refrigerant from Ice Plant Refrigeration System
HVC723329	Repair and Retrofit Ice Plant Refrigeration System and Its Accessories
HVC723330	Perform Start-Up and Commissioning for Ice Plant Refrigeration System
UNIT CODE	COMMON COMPETENCIES (216 Hours)
HVC713201	Prepare Materials And Tools
HVC311203	Perform Mensuration and Calculation
HVC713202	Perform Basic Benchwork
HVC724201	Perform Basic Electrical Works
HVC311204	Maintain Tools And Equipment
HVC315201	Perform Housekeeping And Safety Practices
HVC311205	Document Work Accomplished
UNIT CODE	BASIC COMPETENCIES (18 Hours)
500311105	Participate in workplace communication
500311106	Work in a team environment
500311107	Practice career professionalism
500311108	Practice occupational health and safety procedures

This section gives the details and contents of the units of competency required in ICE PLANT REFRIGERATION SERVICING NC III. These units of competency are categorized into basic, common and core competencies.

CORE COMPETENCIES

This section gives the details of the contents of the core units of competency required in ICE PLANT REFRIGERATION SERVICING NC III.

UNIT TITLE : SURVEY SITE FOR INSTALLATION
UNIT CODE : HVC723322

This unit covers the knowledge, skills and attitudes in surveying site for installation of equipment, piping, air distribution and electrical controls and wiring for Ice plant refrigeration units.

1. Prepare site for surveying
   • Work instructions are read and interpreted to determine job requirements
   • Materials are prepared according to specifications
   • Technical plan/drawing is interpreted
   • Components of Ice plant refrigeration system to be installed are identified as per plan
2. Survey site
   • Site is surveyed as per approved sketch/plan
   • Alteration/comments are prepared as per survey conducted
   • Result of survey is prepared and submitted to appropriate personnel/supervisor

UNIT TITLE : INSTALL ICE PLANT REFRIGERATION PIPING SYSTEM
UNIT CODE : HVC723323

This unit covers the knowledge, skills and attitudes to install ice plant refrigeration piping systems according to plan. It includes preparation of piping requirements, laying out and insulation of secondary refrigerant piping

1. Prepare piping requirements
   • Work instructions are read and interpreted based on job requirements
   • Piping requirements are prepared and checked for damages in accordance with plans and specifications
   • Tools and equipment are selected relevant to required tasks
   • Fabrication of pipe hangers and supports are checked in conformity with designs and specifications
   • Work is undertaken in line with safety requirements
2. Lay-out refrigerant/secondary refrigerant piping
   • Selection of brackets and supports are inspected in accordance with job requirements
   • Installation of brackets and supports are checked according to plan
   • Refrigerant/secondary refrigerant piping is laid out in conformity with design
   • Refrigerant/secondary refrigerant piping is installed in accordance with approved design and manufacturer’s specification
3. Inspect welding of pipe joints
   • Tools and equipment required for pipe brazing are inspected in line with job requirements
   • Operation of SMAW/GTAW equipment is supervised in accordance with manufacturer’s manual and safety requirements
   • Quality of welded pipe joints are inspected ensuring no leakage and quality finish in accordance with enterprise standards
   • Economical use of piping materials are ensured in accordance with approved plan and standard operating procedures
4. Perform insulation of refrigerant/ secondary refrigerant piping
   • Required insulating/sealing/adhesive materials are applied in accordance with manufacturer’s specifications
   •  Refrigerant /secondary refrigerant piping is insulated as per standard procedures
   • Joints are prepared and checked to ensure fit and air tightness in line with standard procedures

UNIT TITLE : INSTALL ICE PLANT REFRIGERATION ELECTRICAL SYSTEM
UNIT CODE : HVC723324

This unit covers the knowledge, skills and attitudes to safely install electrical wiring, controls and protective devices for Ice plant refrigeration electrical systems

1. Lay-out electrical system
   • Work instructions are read and interpreted to determine job requirements
   • Electrical materials are prepared and checked in consistent with job requirements
   • Electrical systems is laid out in conformity with the designs, specifications and/or approved working plan/drawing
   • Electrical systems are mounted/insulated/terminated as per standard operating procedures
   • Wiring method is applied as required/ prescribed in the PEC
2. Install power supply wiring
   • Power supply wirings are inspected and checked for damages in accordance with specifications
   • Power supply wirings are installed as per approved working design / plan and wiring diagram
   • Termination, insulation and testing for short and grounding of wirings are performed according to established procedures
3. Install controls and protective devices
   • Controls and protective devices are selected in line with PEC requirements
   • Controls and protective devices are installed as per design/ specification/wiring diagrams
   • Controls/protective devices are mounted, secured and are free from physical and mechanical damage
   • Sequence test is performed according to established procedures
4. Test -run electrical system
   • Testing of the electrical system is performed in line with manufacturer’s instruction/procedures
   • Report on installation and testing of electrical system is prepared
   • Recorded data base on the standard procedures

UNIT TITLE : INSTALL ICE PLANT REFRIGERATION EQUIPMENT
UNIT CODE : HVC723325

This unit covers the knowledge, skills and attitudes to safely install the main ICE PLANT refrigeration components and units based on manufacturer’s recommendations.

1. Prepare for installation of components and units
   • Installation drawings and instructions are checked, read and interpreted for correct location, dimension and level in accordance with established procedures
   • Approval for the installation is coordinated and confirmed with appropriate authority
   • Supplies and materials needed for installation are prepared in accordance with specification and standard operating procedures
   • Work is undertaken in line with safety requirements, including use of appropriate PPE
2. Install components and units
   • Ice plant components to be installed are checked and prepared in accordance with drawings, designs and specifications
   • Compressors, shell & tube/plate heat exchangers, unit coolers, liquid receivers, intercoolers, separators, evaporative condensers and its accessories are installed according to unit manual recommendation
   • Pipes, fittings, stop valves, control valves and other accessories are installed in accordance with drawings, designs and specifications
   • Installation is completed with no damage to equipment and its components
   • Faults/problems are identified and necessary remedial action is taken in line with standard operating procedures
3. Test-run ice plant refrigeration system
   • Charging of Ice Plant systems and components with refrigerant and secondary heat transfer fluid are ensured in accordance with manufacturer’s standard operating procedures
   • Pre-start up checks are performed in accordance with standard operating procedures
   • Reports and documentation are completed based on approved format

UNIT TITLE : SERVICE AND MAINTAIN ICE PLANT REFRIGERATION SYSTEM
UNIT CODE : HVC723326

This unit covers the knowledge, skills and attitudes in maintaining refrigeration components, lubrication, refrigerant, secondary heat transfers and distribution systems in ice plant refrigeration units.

1. Prepare for maintenance activities
   • Work instructions are read and interpreted to determine job requirements
   • Appropriate manufacturer’s manual is selected based on system requirements
   • Tools and instruments are selected in accordance with job requirements
   • Personal protective equipment (PPE) is selected and prepared
2. Check and adjust refrigeration components
   • Evaporator/condenser are cleaned in accordance with manufacturer’s maintenance manual
   • Refrigerant piping are checked for condition, leak, and insulation in accordance with standard testing procedures
   • Tightness of support/brackets are inspected according to plan
   • Operating condition and electromechanical controls/settings are inspected and adjusted in accordance with manufacturer’s operation/service manual
   • Refrigeration components are checked and adjusted as per manufacturer’s operation/service manual
   • Established maintenance procedures are applied according to plan
3. Maintain lubrication system in ice plant
   • Lubrication system variables and components are checked and adjusted based on operational specifications
   • Oil levels, properties and circulation balances are checked and adjusted based on operational specifications
   • Oil filters are checked based on manufacturer’s maintenance procedures
4. Maintain refrigerant system
   • Liquid supply and back pressure filters are checked as per manufacturers maintenance procedures
   • Refrigerant leaks are detected and rectified based on procedures
   • Refrigerant system variables and contaminants are checked and adjusted based on procedure’s manual
   • Automatic and manual non-condensable gas purgers are checked and adjusted based on operational specifications
5. Maintain secondary heat transfer equipment
   • Secondary heat transfer loop is checked and findings are documented in accordance with established procedures
   • Liquid properties are checked and adjusted to meet system requirements
   • Follow-up action is arranged in accordance with workplace procedures

UNIT OF COMPETENCY: TROUBLESHOOT AND REPAIR COMMERCIAL REFRIGERATION EQUIPMENT (CRE)
UNIT CODE : HVC723345

This unit covers the knowledge, skills and attitudes in troubleshooting and repairing refrigeration systems. It includes planning troubleshooting and repair, preparing materials, tools and equipment and identifying and repairing faults. This standard covers refrigeration equipment used in commercial applications.

1. Plan and prepare for troubleshooting and repair
   • Appropriate wiring diagrams, charts and manuals are interpreted in line with the job requirements
   • Appropriate materials, tools and equipment are selected based on job requirements
   • Power supply is checked to ensure compliance with nameplate rating and/or manufacturer’s specifications
2. Identify and repair faults/troubles
   • Appropriate PPE is selected and used in line with the job requirements
   • Refrigeration system components are tested following manufacturer’s manual, RAC Code of Practice and/or enterprise troubleshooting policy
   • Faults/problems with refrigerant system are diagnosed in line with manufacturer’s manual, RAC Code of Practice and/or enterprise troubleshooting policy
   • Remedial action is taken to overcome faults/problems in line with manufacturer’s manual, RAC Code of Practice and/or enterprise troubleshooting policy
   • Work is completed safely in line with enterprise safety guidelines
   • Report on testing procedure, including faults and repair, is completed in line with RAC Code of Practice and/or enterprise troubleshooting policies.
3. Perform refrigerant recovery/recycling and retrofitting on commercial refrigeration systems
   • Safe working practices are observed throughout the task as per enterprise procedure
   • Suitable tools and equipment are selected and used based on job requirement
   • Optimum recovery of refrigerant is performed in line with RAC Code of Practice
   • Refrigerants recovery/recycling is performed according to manufacturer’s
     recommendations and RAC Code of Practice
   • Retrofitting is performed based on RAC Code of Practice
4. Test run CRE
   • Equipment is tested in line with manufacturer’s instructions
   • Report on testing equipment is prepared in line with enterprise procedures

UNIT TITLE : RECOVER AND RECYCLE REFRIGERANT IN ICE PLANT SYSTEM
UNIT CODE : HVC723328

This unit covers the knowledge, skills and attitudes in recovering and recycling refrigerants in the ice plant system. This includes evaluation of unit for recovering/recycling, setting-up of equipment and performing recovery and recycling of refrigerant operations.

1. Assess unit for recovery/recycling
   • Relevant data are gathered on unit to be recovered/recycled as per procedure
   • Appropriateness of unit for refrigerant recovery/recycling is determined according to Clean Air Act/Montreal Protocol requirements and manufacturer’s specifications
2. Set-up equipment for recovery/ recycling
   • Equipment, instruments, tools and accessories are gathered based on job requirements
   • Equipment, instruments and tools are checked based on operation’s manual
   • Equipment and accessories are set-up according to recovery/recycling requirements
3. Perform refrigerant recovery/ recycling
   • Optimum recovery of refrigerant is determined in line with the Clean Air Act/ Montreal Protocol
   • Refrigerants recovery/recycling is performed according to manufacturer’s recommendations
   • Recovered refrigerant in the tank is identified and labeled prior to recycling based on procedure
   • Contaminants are removed from the system based on instrument readings
   • Recovery/recycling machine is operated and maintained in accordance with manufacturer’s recommendations
   • Safety measures in recovery/recycling of refrigerants are observed in accordance with industry requirements

UNIT TITLE : REPAIR AND RETROFIT ICE PLANT SYSTEMS AND ITS ACCESSORIES
UNIT CODE : HVC723329

This unit covers the knowledge, skills and attitudes in repairing and retrofitting ice plant system and its accessories. I t includes evaluating the condition and repairing faulty components, performing preventive maintenance and testing ice plant refrigeration system operation

1. Evaluate condition of existing ice plant systems
   • Visual inspections of all refrigeration components are performed and any signs of damage, lubricant leaks and corrosion are reported to the authorized personnel
   • Refrigeration systems are checked based on manufacturer’s specification
   • Leak test is performed based on time requirement and any leaks found are repaired according to manufacturer’s specifications
2. Prepare for servicing/repairing ice plant and components
   • Work instructions are read and interpreted to determine job requirements
   • Electrical materials are prepared and checked in accordance with system requirements
   • Appropriate PPE is selected and prepared in line with the job requirements
   • Work safety is observed according to enterprise regulations
3. Prepare ice plant systems for retrofitting
   • Required tools and equipment are selected and used based on procedure
   • Faults identified from a visual inspection and operational check are rectified, according to system requirements
   • Amount of oil in the compressor crankcase/oil separator is optimized based on procedure
   • Optimum amount of refrigerant is recovered in accordance with manufacturer’s recommendations
   • Refrigeration system is pump-out and evacuated
4. Repair/replace faulty ice plant components
   • Ice plant components are correctly identified based on manual
   • Faults are identified and diagnosed based on procedure
   •  Operational function of each component is inspected and tested in accordance with the standard operating procedures
   • Ice plant components are repaired/replaced as per manufacturer’s operation/repair manual
   • Ice plant components are reconditioned and overhauled in accordance with workplace procedures
5. Test industrial refrigeration system operation
   • Suitable tools and compatible equipment are selected and used based on manufacturer’s specifications
   • Refrigeration system is checked for leaks based on procedure
   • Any leaks located as a result of leak detection tests are sealed in compliance with compressor and manufacturer’s instructions
   • Refrigeration system is operated within compressor and manufacturer’s acceptable limits of temperatures and pressures
   • Safe working practices are observed throughout the task
6. Undertake preventive maintenance check/adjustment on ice plant refrigeration
   • Inspection and testing of ice plant refrigeration components is carried out with appropriate test equipment in accordance with refrigeration principles, procedures and safety requirements
   • Preventive maintenance is performed according to established plan
   • Maintenance records/service reports are recorded and completed in accordance with standard operating procedures

UNIT TITLE : PERFORM START-UP AND COMMISSIONING OF ICE PLANT SYSTEM
UNIT CODE : HVC723330

This unit covers the knowledge, skills and attitudes in testing, starting up and ensuring fitness of ice plant system for operation.

1. Prepare for commissioning of an ice plant systems
   • Work instructions are read and interpreted prior to commissioning
   • Tools and equipment are selected in accordance with job requirements
   • Pre-commissioning checks are completed and complied with procedures laid down in system documents
   • Commissioning method and program are secured and recording sheets are prepared in accordance with established procedures
   • Commissioning instruments are prepared and calibrated in accordance with system documents
2. Assess ice plant system operation
   • Systems are checked safely in accordance with standard operating procedures
   • Pressures and temperature are determined and recorded in accordance with established procedures
   • Faults are isolated to component level and appropriate corrective action is applied
   • Refrigeration systems are checked for leaks and contamination safely in accordance with standard operating procedures
3. Recover refrigerant from the system
   • Refrigerant system is evacuated using appropriate method and techniques in accordance with prescribed codes and regulations
   • Refrigerant evacuated from the refrigeration are contained/ disposed of in accordance with standard operating procedures
   • Amount of refrigerant reclaimed from refrigeration system are recorded/ reported in accordance with established procedures
4. Charge the refrigeration system
   • Systems are charged with required refrigerant according to system specifications and manufacturer’s instruction
   • Appropriate lubricating oil is added to the refrigeration systems in accordance with standard operating procedures
   • Refrigeration systems are checked for leaks using appropriate tools and techniques in accordance with established operating procedures
5. Perform pre-start checks
   • Electrical, pneumatic and other controls are tested and set to meet specified and safety performance requirements
   • Electrical systems are checked based on procedure and safety requirement
   • Motor, motor ratings and pump rotation directions are verified against fuse ratings and overload settings based on manual
   • Fluid flows are tested and balanced based on specifications
   • Noise and vibration levels are confirmed within limits

COMMON COMPETENCIES

UNIT OF COMPETENCY: PREPARE MATERIALS AND TOOLS
UNIT CODE : HVC713201

This unit covers the knowledge, skills and attitudes in identifying, requesting and receiving construction materials and tools based on the required performance standards.

1. Identify materials
   • Materials are listed as per job requirements
   • Quantity and description of materials conformed to the job requirements
   • Tools and accessories are identified according to job requirements
2. Requisition materials
   • Materials and tools needed are requested according to the list prepared
   • Request is done as per company standard operating procedures
   • Substitute materials and tools are provided without
     sacrificing cost and quality of the work
3. Receive and inspect materials
   • Materials and tools issued are inspected as per quantity and specification
   • Tools, accessories and materials checked for damages according to enterprise procedures
   • Materials and tools are set aside to appropriate location nearest to the workplace

UNIT OF COMPETENCY: INTERPRET TECHNICAL DRAWINGS AND PLANS
UNIT CODE : HVC311202

This unit covers the knowledge, skills and attitudes in analyzing and interpreting symbols, data and work plan based on the required performance standards.

1. Analyze signs, symbols and data
   • Technical plans are obtained according to job requirements
   • Signs, symbols and data are identified according to job specifications
   • Signs symbols and data are determined according to classification or as appropriate in drawing
2. Interpret technical drawings and plans
   • Necessary tools, materials and equipment are identified according to the plan
   • Supplies and materials are listed according to specifications
   • Components, assemblies or objects are recognized as required
   • Dimensions are identified as appropriate to the plan
   • Specification details are matched with existing/available resources in line with job requirements
   • Work plan is drawn following the specifications
3. Apply freehand sketching
   • Where applicable, correct freehand sketching is produced in accordance with the job requirements

UNIT OF COMPETENCY: OBSERVE PROCEDURES, SPECIFICATIONS AND MANUALS OF INSTRUCTION
UNIT CODE : HVC311201

This unit covers the knowledge, skills and attitudes in identifying, interpreting, applying services to specifications and manuals, and storing manuals.

1. Identify and access specification/manuals
   • Appropriate manuals are identified and accessed as per job requirements
   • Version and date of manual is checked to ensure correct specification and procedure are identified
2. Interpret manuals
   • Relevant sections, chapters of specifications/ manuals are located in relations to the work to be conducted
   • Information and procedure in the manual are interpreted in accordance to industry practices
3. Apply information in manual
   • Manual is interpreted according to job requirements
   • Work steps are correctly identified in accordance with manufacturer’s specification
   • Manual data is applied according to the given task
   • All correct sequencing and adjustments are interpreted in accordance with information contained on the manual or specifications
4. Store manuals
   • Manual or specification are stored appropriately to ensure prevention of damage, ready access and updating of information when required in accordance with company requirements

UNIT OF COMPETENCY: PERFORM MENSURATIONS AND CALCULATIONS
UNIT CODE : HVC311203

This unit covers the knowledge, skills and attitudes in identifying and measuring objects based on the required performance standards.

1. Select measuring instruments
   • Object or component to be measured is identified, classified and interpreted to the appropriate regular geometric shape
   • Measuring tools are selected/identified as per object to be measured or job requirements
   • Correct specifications are obtained from relevant sources
   • Appropriate measuring instruments are selected according to job requirements
   • Alternative measuring tools are used without sacrificing cost and quality of work
2. Carry out measurements and calculations
   • Accurate measurements and calculations are obtained to job requirements
   • Alternative measuring tools are used without sacrificing cost and quality of work
   • Calculation needed to complete work tasks are performed using the four basic process of addition (+), subtraction (-), multiplication (x) and division (/) including but not limited to: trigonometric functions, algebraic computations
   • Calculations involving fractions, percentages and mixed numbers are used to complete workplace tasks
   • Numerical computation is self-checked and corrected for accuracy
   • Instruments are read to the limit of accuracy of the tool
   • Systems of measurement identified and converted according to job requirements/ISO
   • Workpieces are measured according to job requirements

UNIT OF COMPETENCY: PERFORM BASIC BENCHWORKS
UNIT CODE : HVC713202

This unit covers the knowledge, skills and attitudes in preparing materials, tools and equipment, lay-outing dimensions and performing basic benchwork based on the required performance standards.

1. Prepare materials, tools and equipment
   • Work plan is interpreted to determine job requirements
   • Materials, tools and equipment are identified and prepared according to job requirements
   • Materials are checked according to the required specifications
   • Tools and equipment conditions are checked following the standard operating procedures (SOPs)
2. Lay-out and mark dimensions/features on workplace
   • Metallic and non-metallic materials are selected according to the requirements specified in the blueprint
   • Dimensions/features are laid-out/marked according to job specifications/blueprint and within the required tolerance
   • Dimensions are checked against the actual work plan
3. Perform required basic metal works
   • Work instructions are followed to ensure work safety
   • Basic metal works are performed applying knowledge on safety procedures and according to job requirements
   • Workpieces are clamped in workholding device to avoid damage and accidents
   • Work pieces are cut, chipped or filed according to required measurements, tolerance specified in the blueprint and free from burrs and sharp edges
   • Drilling is performed according to recommended sequence and specifications
   • Proper usage of materials, tools and equipment is observed
   • Appropriate PPE and safety procedures are applied
   • Worksite is cleaned and cleared of all debris and left in safe state in accordance with OHS regulations

UNIT OF COMPETENCY: PERFORM BASIC ELECTRICAL WORKS
UNIT CODE : HVC724201

This unit covers the knowledge, skills and attitudes in preparing materials, tools and equipment, testing electrical components and basic repairing in electricity based on the required performance standards.

1. Prepare electrical tools and test instruments
   • Work plan is interpreted to determine job requirements
   • Electrical tools and instruments are identified and prepared according to job requirements
   • Electrical tools and instruments are checked for conditions and calibrated as required
2. Test power supply and electrical components
   • Instruments are tested in accordance with PEC
   • Power supply and electrical components are checked in accordance with manufacturer’s specifications/PEC
   • Defects of power supply and electrical components are identified and recorded
   • Safe working habits is observed
3. Perform basic electrical repair
   • Work instructions are followed to ensure safety work
   • Loose connections are tightened in accordance with PEC
   • Defective electrical components are replaced and tested in accordance with PEC
   • Work place is cleaned and in safe state in line with OHSA regulations

UNIT OF COMPETENCY: MAINTAIN TOOLS AND EQUIPMENT
UNIT CODE : HVC311205

This unit covers the knowledge, skills and attitudes in checking condition, performing preventive maintenance and storing of tools and equipment based on the required performance standards.

1. Check condition of tools and equipment
   • Materials, tools and equipment are identified according to classification and job requirements
   • Non-functional tools and equipment are segregated and labeled according to classification
   • Safety of tools and equipment are observed in accordance with manufacturer’s instructions
   • Condition of PPE are checked in accordance with manufacturer’s instructions
2. Perform basic preventive maintenance
   • Appropriate lubricants are identified according to types of equipment
   • Tools and equipment are lubricated according to preventive maintenance schedule or manufacturer’s specifications
   • Measuring instruments are checked and calibrated in accordance with manufacturer’s instructions
   • Tools are cleaned and lubricated according to standard procedures
   • Defective instruments, equipment and accessories are inspected and replaced according to manufacturer’s specifications
   • Tools are inspected, repaired and replaced every after use
   • Work place are cleaned and in safe state in line with OHSA regulations
3. Store tools and equipment
   • Inventory of tools, instruments and equipment are conducted and recorded as per company practices
   • Tools and equipment are stored safely in appropriate locations in accordance with manufacturer’s specifications or company procedures

UNIT OF COMPETENCY : PERFORM HOUSEKEEPING AND SAFETY PRACTICES FOR RAC SERVICING
UNIT CODE : HVC7315201

This unit covers the knowledge, skills and attitudes needed to work safely in the workplace including sorting, cleaning and dispensing materials, tools and equipment, identifying and minimizing hazards, responding and recording accidents and following basic security.

1. Sort materials, tools and equipment
   • Materials, tools and equipment are classified according to its kinds
   • Appropriate areas for materials, tools and equipment are designated
2. Clean workplace area, materials, tools and equipment
   • Cleaning materials are identified and used as per procedure
   • Workplace areas, materials, tools and equipment are cleaned as per company practices
   • Workplace are in safe state in accordance with safety regulations/company practices
3. Systematize dispensing and retrieval of materials, tools and equipment
   • Systems for requesting, borrowing and returning of materials, tools and equipment is in-place and implemented
   • Forms used are completely filled-up and filed
   • Borrowed tools, and equipment are returned to designated area
   • Consumable materials are requested in exact quantity
4. Identify and minimize/ eliminate hazards
   • Hazards in the work area are recognized and reported to designated personnel and appropriate control actions are taken
   • Workplace policies and procedures for controlling risks are established and followed accurately
   • Workplace procedures for dealing with emergencies are followed whenever necessary within the scope o
     responsibilities and competencies
   • Safety signs and hazard warnings are displayed and observed at all times in line with workplace health and safety regulations
   • Equipment and safety devices/PPE are used/handled according to company or manufacturer’s procedures and guidelines
   • Work areas are kept clean, free from obstacles and emergency exits are know and kept clear at all times
   • Safe manual handling/fighting techniques and safe equipment operation techniques are employed at all times
5. Respond and record accidents
   • Workplace accidents are identified
   • Workplace emergency first-aid procedures/treatment are followed/carried out correctly in accordance with standards/regulations and enterprise procedures/policies
   • Medical assistance/rescue is coordinated with concerned personnel in line with organizational policies
   • Accident/incident records maintained in accordance with standard operating procedures
6. Follow basic security
   • Security policies/procedures are followed according to enterprise practices and appropriate legislation
   • Security related events are recorded/reported on the relevant forms
   • Staff are advised of enterprise security procedures and correct methods of implementation

UNIT OF COMPETENCY: DOCUMENT WORK ACCOMPLISHED
UNIT CODE : HVC311205

This unit covers the knowledge, skills and attitudes in documenting work accomplished.

1. Identify forms and data
   • Forms are selected based on the reports to be prepared
   • Data are collected based on the reports to be prepared
2. Prepare reports
   • Reports are completed using standard form as per company procedures
   • Reports provide details of work completed, further action to be taken and other details as per company procedures
   • Reports are completed and submitted within specified time to the concerned personnel/supervisor

BASIC COMPETENCIES

UNIT OF COMPETENCY : PARTICIPATE IN WORKPLACE COMMUNICATION
UNIT CODE : 500311105

This unit covers the knowledge, skills and attitudes required to gather, interpret and convey information in response to workplace requirements.

1. Obtain and convey workplace information
   • Specific and relevant information is accessed from appropriate sources
   • Effective questioning, active listening and speaking skills are used together and convey information
   • Appropriate medium is used to transfer information and ideas
   • Appropriate non- verbal communication is used
   • Appropriate lines of communication with supervisors and colleagues are identified and followed
   • Defined workplace procedures for the location and storage of information are used
   • Personal interaction is carried out clearly and concisely
2. Participate in workplace meetings and discussions
   • Team meetings are at ended on time
   • Own opinions are clear expressed and those of others are listened to without interruption
   • Meeting inputs are consistent with the meeting purpose and established protocols
   • Workplace interactions are conducted in a courteous manner
   • Questions about simple routine workplace procedures and matters concerning working conditions of employment are asked and responded to.
   • Meetings outcomes are interpreted and implemented
3. Complete relevant work related documents
   • Range of forms relating to conditions of employment are completed accurately and legibly
   • Workplace data is recorded on standard workplace forms and documents
   • Basic mathematical processes are used for routine calculations
   • Errors in recording information on forms/documents are identified and properly acted upon
   • Reporting requirements to supervisor are completed according to organizational guidelines

UNIT OF COMPETENCY : WORK IN TEAM ENVIRONMENT
UNIT CODE : 500311106

This unit covers the skills, knowledge and attitudes to identify role and responsibility as a member of a team.

1. Describe team role and scope
   • The role and objective of the team is identified from available sources of information
   • Team parameters, reporting relationships and responsibilities are identified from team discussions and appropriate external sources.
2. Identify own role and responsibility within team
   • Individual role and responsibilities within the team environment are identified.
   • Roles and responsibility of other team members are identified and recognized.
   • Reporting relationships within team and external to team are identified.
3. Work as a team member
   • Effective and appropriate forms of communications used and interactions undertaken with team members who contribute to known team activities and objectives.
   • Effective and appropriate contributions made to complement team activities and objectives, based on individual skills and competencies and workplace context.
   • Observed protocols in reporting using standard operating procedures.
   • Contribute to the development of team work plans based on an understanding of team’s role and objectives and individual competencies of the members.

UNIT OF COMPETENCY : PRACTICE CAREER PROFESSIONALISM
UNIT CODE : 500311107

This unit covers the knowledge, skills and attitudes in promoting career growth and advancement.

1. Integrate personal objectives with organizational goals
   • Personal growth and work plans are pursued towards improving the qualifications set for the profession
   • Intra- and interpersonal relationships is are maintained in the course of managing oneself based on performance evaluation
   • Commitment to the organization and its goal is demonstrated in the performance of duties
2. Set and meet work priorities
   • Competing demands are prioritized to achieve personal, team and organizational goals and objectives.
   • Resources are utilized efficiently and effectively to manage work priorities and commitments
   • Practices along economic use and maintenance of equipment and facilities are followed as per established procedures
3. Maintain professional growth and development
   • Trainings and career opportunities are identified and availed of based on job requirements
   • Recognitions are sought/received and demonstrated as proof of career advancement
   • Licenses and/or certifications relevant to job and career are obtained and renewed

UNIT OF COMPETENCY : PRACTICE  OCCUPATIONAL HEALTH AND SAFETY PROCEDURES
UNIT CODE : 500311108

This unit covers the outcomes required to comply with regulatory and organizational requirements for occupational health and safety.

1. Identify hazards and risks
   • Safety regulations and workplace safety and hazard control practices and procedures are clarified and explained based on organization procedures
   • Hazards/risks in the workplace and their corresponding indicators are identified to minimize or eliminate risk to co-workers, workplace and environment in accordance with organization procedures
   • Contingency measures during workplace accidents, fire and other emergencies are recognized and established in accordance with organization procedures
2. Evaluate hazards and risks
   • Terms of maximum tolerable limits which when exceeded will result in harm or damage are identified based on threshold limit values (TLV)
   • Effects of the hazards are determined
   • OHS issues and/or concerns and identified safety hazards are reported to designated personnel in accordance with workplace requirements and relevant workplace OHS legislation
3. Control hazards and risks
   • Occupational Health and Safety (OHS) procedures for controlling hazards/risks in workplace are consistently
     followed
   • Procedures for dealing with workplace accidents, fire and emergencies are followed in accordance with organization OHS policies
   • Personal protective equipment (PPE) is correctly used in accordance with organization OHS procedures and practices
   • Appropriate assistance is provided in the event of a workplace emergency in accordance with established organization protocol
4. Maintain OHS awareness
   • Emergency-related drills and trainings are participated in as per established organization guidelines and procedures
   • OHS personal records are completed and updated in accordance with workplace requirements

DEFINITION OF TERMS

• Alternate Refrigerant -replacement refrigerant that can accomplish the same task as the one being replaced, but may require that refrigeration or air-conditioning equipment be redesigned or replaced
• Brazed Tube -tube made from sheet or strip with a longitudinal brazed joint
• Capillary Tube – small bore tube used for metering by controlling length and bore size. In refrigeration, a tube of small internal diameter used as a refrigerant pressure and flow control between high and low sides-tube used to transmit pressure from the sensitive bulb of some temperature controls to the operating element
• Compression Ratio -the ratio determined by dividing the discharge pressure, in psia, by the suction pressure, psia
• Crankcase – the casing or covering for the crankshaft of the reciprocating compressor
• Evaporator Unit – assembly of refrigerating compressor, evaporator, and necessary accessories attached to one base
• Expansion Valve – a valve designed to meter the flow of liquid refrigerant to an evaporator
• Filter – a very fine strainer for removing foreign matter and dirt from the refrigerant
• Gas Tungsten-Arc Welding (GTAW) – arc-welding process wherein coalescence is produced by heating with an arc between a single tungsten (non consumable) electrode and the work. Note: Shielding is obtained from a gas or gas mixture. Pressure may or may not be added
• Insulation – any material intended to reduce the flow of heat
• Liquid Receiver – vessel, permanently connected to a refrigerating system by inlet and outlet pipes, for storage of liquid refrigerant
• Nitrogen Purge – procedure in which nitrogen gas is bled into piping as it is welded, brazed, or soldered; or after, to displace gases within the piping. The nitrogen displaces the air from inside the pipe, minimizing oxidation and resultant scale formation
• Ohm’s law – direct current flowing in an electric circuit is directly proportional to the voltage applied to the circuit; it is valid for metallic circuits and many circuits containing an electrolytic resistance
• Oil separator – a device for separating out oil and returning it to the compressor crankcase entrained in the discharge gas from a compressor
• Pressure Gage – instrument for measuring pressure above or below atmospheric pressure
• Propylene Glycol – clear, colorless liquid used to depress the freezing point of water for use as a secondary coolant in HVAC&R systems
• Pull-Down Test – first operational check on a refrigerating installation to measure the time taken to pull the temperature down to the desired conditions, while also measuring the temperatures, pressures, and associated data
• Pump Down – of refrigerant, withdrawal of all refrigerant from the low side of a system by pumping it to either the condenser or the liquid receiver
• Qualification Test – procedure used to verify the accuracy of the measurement techniques (temperature, airflow rates, duct heat calibration) employed in determination of heating or cooling effect
• Rating – assigned value of those performance characteristics (under standard rating conditions) by which a unit may be selected to fit its application Note: These values apply to all units of like (nominal) size and type (identification) produced by the same manufacturer
• Refrigerating Capacity (gross) – total rate of heat removal from all sources by the evaporator of a refrigerating system at stated conditions. It is numerically equal to the system refrigerating effect
• Refrigerating System Contaminants – contaminants include water (most important and universal contaminant); dirt; particles; organic materials such as waxes, acids, and sludges; or other products of chemical reactions taking place while the system is operating
• Refrigeration Cycle – The complete operation involved in providing refrigeration
• Repair – to restore to good or sound condition, within the following constraints: operation must be fully restored without embellishment; and failure must have occurred
• Retrofit – modification of existing equipment, systems, or buildings to incorporate improved performance, updated operation, or both. Derived from retroactive refit
• Risers – a vertical tube or pipe that carries refrigerant in any form from a lower to a higher level
• Shielded Metal-Arc Welding (SMAW) – arc-welding process wherein coalescence is produced by heating with an electric arc between a covered metal electrode and the work Note: Shielding is obtained from decomposition of the electrode covering. Pressure is not used and filler metal is obtained from the electrode
• Sludge – product of decomposition of oil resulting from impurities, moisture, or chemical reactions and favored by excessive temperature. Sludge may be mushy, gummy, or hard
• Suction Lift – combination of static suction lift and friction head in suction piping when the source of liquid is below the pump centerline
• Superheat – The temperature increase above saturation temperature or above boiling point
• Symbol – letter, figure, other character or mark, or combination of letters used to represent a specific thing
• Time Defrosting – defrosting process automatically and intermittently operated for a predetermined period
• Ton (of refrigeration) -time rate of cooling equal to 12,000 Btu/h (approximately 3517 W)