Major Work Activity E – Performs maintenance and repair
Task E-18 Performs scheduled maintenance
Task Descriptor
Sheet metal workers perform scheduled maintenance to minimize repair costs, increase longevity and enhance system performance.
E-18.01 Performs maintenance inspections
Essential Skills
Writing, Oral Communication, Document Use
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Performance Criteria |
Evidence of Attainment |
| E-18.01.01P |
obtain service schedule |
service schedule with a list of equipment and components to be inspected is obtained according to manufacturers’ specifications, and site and environmental conditions |
| E-18.01.02P |
verify inspection checklist |
inspection checklist is verified for itemization of equipment components to be inspected |
| E-18.01.03P |
select and use tools and equipment |
tools and equipment are selected and used according to job requirements |
| E-18.01.04P |
perform required tests and readings |
tests and readings are performed according to job requirements |
| E-18.01.05P |
conduct sensory inspection |
sensory inspection is conducted to identify possible faults |
| E-18.01.06P |
record and report findings on inspection checklist |
findings are recorded and reported on inspection checklist |
| E-18.01.07P |
provide record of inspection report to client and keep record on file |
record of inspection report is provided to client and kept on file |
Range of Variables
tools and equipment include: multimeters, air-testing equipment, hand tools, testing devices
tests and readings include: amp draws, resistance, voltage, air pressure, filter conditions, vibration, temperature, noise, flow rate
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Learning Outcomes |
Learning Objectives |
| E-18.01.01L |
demonstrate knowledge of inspection procedures for system components and the associated tools and equipment |
define terminology associated with the inspection of system components |
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identify tools and equipment used to inspect system components, and describe their applications, limitations and procedures for use |
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identify considerations for the inspection of system components |
| E-18.01.02L |
demonstrate knowledge of testing devices and their applications |
describe the procedures used to diagnose system faults in system components |
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describe procedures for using testing devices |
| E-18.01.03L |
demonstrate knowledge of safe work practices and procedures pertaining to the inspection of system components |
identify hazards and describe safe work practices and procedures pertaining to the inspection of system components |
| E-18.01.04L |
demonstrate knowledge of performing calculations to determine system performance |
describe the procedures used to perform calculations to determine system performance |
Range of Variables
tools and equipment include: multimeters, air-testing equipment, hand tools, testing devices
considerations include: sounds, vibration, odours, heat build-up
testing devices include: thermal imaging devices, multimeters, tachometers, belt-tensioning tools, thermometers, stethoscope, refrigeration gauges, leak detectors, manometer
E-18.02 Services components
Essential Skills
Document Use, Thinking, Numeracy
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Performance Criteria |
Evidence of Attainment |
| E-18.02.01P |
verify inspection checklist |
inspection checklist is verified for recommended servicing |
| E-18.02.02P |
verify normal operating conditions and specific accessories |
normal operating conditions and specific accessories are verified according to manufacturers’ specifications |
| E-18.02.03P |
select and use tools and equipment |
tools and equipment are selected and used according to job requirements |
| E-18.02.04P |
clean and replace filters |
filters are cleaned and replaced according to maintenance schedule or site requirements |
| E-18.02.05P |
clean and replace components |
components are cleaned by performing cleaning method and replaced according to maintenance schedule |
| E-18.02.06P |
adjust and replace pulleys and belts |
pulleys and belts are adjusted for alignment and tension according to manufacturers’ specifications and replaced according to wear, sensory inspection and maintenance schedule |
| E-18.02.07P |
lubricate bearings and motor oil ports |
bearings and motor oil ports are lubricated according to manufacturers’ specifications and maintenance schedule |
Range of Variables
tools and equipment include: grease guns, hand tools, portable power tools, hoisting and rigging equipment
cleaning methods include: degreasing, using compressed air, vacuuming, pressure washing, soaking
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Learning Outcomes |
Learning Objectives |
| E-18.02.01L |
demonstrate knowledge of servicing procedures for system components and the associated tools and equipment |
define terminology associated with the servicing of system components |
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identify tools and equipment used to service system components and describe their applications, limitations and procedures for use |
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identify considerations for the servicing of system components |
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describe the procedures used to service system components |
| E-18.02.02L |
demonstrate knowledge of safe work practices and procedures pertaining to the servicing of system components |
identify hazards and describe safe work practices and procedures pertaining to the servicing of system components |
| E-18.02.03L |
demonstrate knowledge of performing calculations to determine system performance |
describe the procedures used to perform calculations to determine system performance |
Range of Variables
tools and equipment include: grease guns, hand tools, portable power tools, hoisting and rigging equipment
considerations include: sounds, vibration, odours, heat build-up
procedures used to service system components include: changing consumables (filters, pads, trays, bags, seals), cleaning components, lubricating, making adjustments, performing lock-out
Task E-19 Repairs faulty systems and components
Task Descriptor
Sheet metal workers repair building systems and equipment such as heating, ventilation and air conditioning and conveyance systems to return them to normal operating conditions and specifications.
E-19.01 Diagnoses system faults
Essential Skills
Thinking, Numeracy, Reading
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Performance Criteria |
Evidence of Attainment |
| E-19.01.01P |
select and use tools and equipment |
tools and equipment are selected and used according to job requirements |
| E-19.01.02P |
conduct sensory inspections |
sensory inspections are conducted to identify system faults |
| E-19.01.03P |
perform required tests and readings |
tests and readings are performed as indicated by system faults |
| E-19.01.04P |
identify source of performance issues |
source of performance issues are identified by evaluating information |
| E-19.01.05P |
evaluate performance of system |
performance of system is evaluated against design requirements |
| E-19.01.06P |
locate and identify worn, faulty and missing components |
worn, faulty and missing components are located and identified |
| E-19.01.07P |
recommend course of action |
repair or replacement of components is recommended as required |
Range of Variables
tools and equipment include: pitot tubes, multimeters, air-testing equipment, thermometers, stethoscopes, refrigeration gauges, leak detectors
tests and readings include: amperage draws, air pressure readings, vibration, temperature, resistance, voltage, gas pressure, humidity
information includes: history of work done, deficiency report, maintenance records, client feedback, observations, test results
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Learning Outcomes |
Learning Objectives |
| E-19.01.01L |
demonstrate knowledge of diagnosing system faults and the associated tools and equipment |
define terminology associated with system faults |
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identify tools and equipment used to diagnose system faults, and describe their applications, limitations and procedures for use |
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identify symptoms of system faults |
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identify types of tests and readings required to diagnose system faults |
| E-19.01.02L |
demonstrate knowledge of performing calculations to determine system performance |
describe the procedures used to perform calculations to determine system performance |
Range of Variables
tools and equipment include: pitot tubes, multimeters, air-testing equipment, thermometers, stethoscopes, refrigeration gauges, leak detectors
symptoms of system faults include: sounds, vibration, odours, heat build-up, increased amperage draw, mould, decreased airflow
tests and readings include: amperage draws, air pressure readings, vibration, temperature, resistance, voltage, gas pressure, humidity
E-19.02 Repairs worn or faulty components
Essential Skills
Document Use, Thinking, Numeracy
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Performance Criteria |
Evidence of Attainment |
| E-19.02.01P |
select and use tools and equipment |
tools and equipment are selected and used according to job requirements |
| E-19.02.02P |
order components |
components are ordered according to job requirements |
| E-19.02.03P |
shut off utility services to the appliance |
utility services to the appliance are shut off according to job requirements and safety procedures |
| E-19.02.04P |
disassemble equipment and components |
equipment and components are disassembled in required sequence according to job requirements |
| E-19.02.05P |
replace and modify faulty and obsolete components |
faulty and obsolete components are replaced and modified if required |
| E-19.02.06P |
reassemble and tighten components |
components are reassembled and tightened according to manufacturers’ specifications |
| E-19.02.07P |
perform tests and readings |
tests and readings are performed to verify that system is operating according to job requirements |
| E-19.02.08P |
prepare service history |
service history is recorded in logbook according to job standards |
Range of Variables
tools and equipment include: hand tools, portable power tools, diagnostic equipment
components include: fan belts, motors, isolators, pulleys, coils, fasteners, ductwork, batteries, controls
utility services include: gas, electrical, water
tests and readings include: amperage draws, air pressure readings, filter conditions
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Learning Outcomes |
Learning Objectives |
| E-19.02.01L |
demonstrate knowledge of procedures for repairing worn or faulty components and the associated tools and equipment |
define terminology associated with the repair of worn or faulty components |
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identify tools and equipment used to repair worn or faulty components , and describe their applications, limitations and procedures for use |
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identify considerations for the repair of worn or faulty components |
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describe the procedures used to repair worn or faulty components |
| E-19.02.02L |
demonstrate knowledge of safe work practices and procedures pertaining to the repair of worn or faulty components |
identify hazards and describe safe work practices and procedures pertaining to the repair of worn or faulty components |
| E-19.02.03L |
demonstrate knowledge of codes, regulations and trade standards pertaining to the repair of worn or faulty components |
identify codes, regulations and trade standards pertaining to the repair of worn or faulty components |
| E-19.02.04L |
demonstrate knowledge of electrical components and equipment |
identify electrical devices and describe their purpose |
| E-19.02.05L |
demonstrate knowledge of performing calculations to determine system performance |
describe the procedures used to perform calculations to determine system performance |
Range of Variables
components include: fan belts, motors, isolators, pulleys, coils, fasteners, ductwork, batteries, controls
tools and equipment include: hand tools, portable power tools, diagnostic equipment
considerations include: type of replacement components, manufacturers’ specifications, location of components, downtime during repair
trade standards include: SMACNA, ASHRAE, ANSI, NBC, CSA, Health Canada, TSB
electrical devices include: circuit breakers, disconnects, overload heaters, GFI, fuses, PLC, motors, variable speed drives (VSD), flow switches, thermostats
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