Major Work Activity E - Performs maintenance and repair

Task E-19 Performs scheduled maintenance

Task Descriptor

Sheet metal workers perform scheduled maintenance to minimize repair costs, increase longevity and enhance system performance.

E-19.01 Performs maintenance inspections

NL	NS	PE	NB	QC	ON	MB	SK	AB	BC	NT	YT	NU
yes	yes	NV	yes	yes	yes	yes	yes	yes	yes	NV	NV	NV

Skills
Reference Code	Performance Criteria	Evidence of Attainment
E-19.01.01P	obtain service schedule	service schedule with list of equipment and components to be inspected is obtained according to manufacturers’ specifications, and site and environmental conditions
E-19.01.02P	verify inspection checklist	inspection checklist is verified for itemization of equipment and components to be inspected
E-19.01.03P	select and use tools and equipment	tools and equipment are selected and used according to project requirements
E-19.01.04P	perform required tests and readings	tests and readings are performed according to project requirements
E-19.01.05P	conduct sensory inspection	sensory inspection is conducted to identify possible faults
E-19.01.06P	record and report findings on inspection checklist	findings are recorded and reported on inspection checklist
E-19.01.07P	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 (include, but not limited to)

tests and readings: amp draws, resistance, voltage, air pressure, filter conditions, vibration, temperature, noise, flow rate

Knowledge
Reference Code	Learning Outcomes and Objectives
E-19.01.01L	demonstrate knowledge of procedures to perform maintenance inspections identify tools and equipment used to perform maintenance inspections, and describe their procedures for use identify testing devices used to identify system faults in system components, and describe their procedures for use identify types of tests and readings apply information from applicable standards to perform maintenance inspections identify hazards, and describe safe work practices to perform maintenance inspections describe procedures to perform maintenance inspections identify considerations when inspecting system components describe procedures to perform calculations to determine system performance
E-19.01.02L	demonstrate knowledge of codes and additional training and certification requirements for servicing system components identify additional training and certification requirements to service system components identify codes, standards and jurisdictional regulations for servicing system components
E-19.01.03L	demonstrate knowledge of sustainability and environmental stewardship practices describe environmental practices, regulations and limitations for working with refrigerants and hazardous materials describe procedures to dispose of and recycle materials

Range of Variables (include, but not limited to)

testing devices: thermal imaging devices, multimeters, tachometers, belt-tensioning tools, thermometers, stethoscopes, refrigeration gauges, leak detectors, manometers
tests and readings: amp draws, resistance, voltage, air pressure, filter conditions, vibration, temperature, noise, flow rate
considerations: sounds, vibration, odours, heat build-up
codes: CSA B149, Mechanical refrigeration code (CSA B52.23), jurisdictional

E-19.02 Services components

NL	NS	PE	NB	QC	ON	MB	SK	AB	BC	NT	YT	NU
yes	yes	NV	yes	yes	yes	yes	yes	yes	yes	NV	NV	NV

Skills
Reference Code	Performance Criteria	Evidence of Attainment
E-19.02.01P	verify inspection checklist	inspection checklist is verified for recommended servicing
E-19.02.02P	verify normal operating conditions and specific accessories	normal operating conditions and specific accessories are verified according to manufacturers’ specifications
E-19.02.03P	select and use tools and equipment	tools and equipment are selected and used according to project requirements
E-19.02.04P	clean and replace filters	filters are cleaned and replaced according to maintenance schedule or site requirements
E-19.02.05P	clean and replace components	components are cleaned by using cleaning methods and replaced according to maintenance schedule
E-19.02.06P	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-19.02.07P	lubricate bearings and motor oil ports	bearings and motor oil ports are lubricated according to manufacturers’ specifications and maintenance schedule

Range of Variables (include, but not limited to)

cleaning methods: degreasing, using compressed air, vacuuming, pressure washing, soaking

Knowledge
Reference Code	Learning Outcomes and Objectives
E-19.02.01L	demonstrate knowledge of procedures to service system components identify tools and equipment used to service system components, and describe their procedures for use identify hazards, and describe safe work practices to service system components describe procedures to service system components identify considerations when servicing system components describe procedures to perform calculations to determine system performance apply information from applicable standards to service system components
E-19.02.02L	demonstrate knowledge of codes, standards and additional training and certification requirements to service system components identify additional training and certification requirements to service system components identify codes, standards and jurisdictional regulations to service system components
E-19.02.03L	demonstrate knowledge of sustainability and environmental stewardship practices describe environmental practices, regulations and limitations for working with refrigerants and hazardous materials describe procedures to dispose of and recycle materials

Range of Variables (include, but not limited to)

procedures to service system components: performing lock-out/tag-out, changing consumables (filters, pads, trays, bags, seals), cleaning components, lubricating, adjusting for alignment and tension
considerations: sounds, vibration, odours, heat build-up, indoor air quality, drainage
codes: CSA B149, CSA B52.23, jurisdictional

Task E-20 Repairs faulty systems and components

Task Descriptor

Sheet metal workers repair building systems and equipment such as heating, ventilation and air conditioning (HVAC), and conveyance systems to return them to normal operating conditions and specifications.

E-20.01 Diagnoses system faults

NL	NS	PE	NB	QC	ON	MB	SK	AB	BC	NT	YT	NU
yes	yes	NV	yes	yes	yes	yes	yes	yes	yes	NV	NV	NV

Skills
Reference Code	Performance Criteria	Evidence of Attainment
E-20.01.01P	select and use tools and equipment	tools and equipment are selected and used according to project requirements
E-20.01.02P	conduct sensory inspections	sensory inspections are conducted to identify system faults
E-20.01.03P	perform tests and readings	tests and readings are performed as indicated by system faults
E-20.01.04P	identify sources of performance issues	sources of performance issues are identified by evaluating information
E-20.01.05P	evaluate performance of system	performance of system is evaluated against design requirements
E-20.01.06P	locate and identify worn, faulty and missing components	worn, faulty and missing components are located and identified
E-20.01.07P	recommend course of action	repair or replacement of components is recommended

Range of Variables (include, but not limited to)

tests and readings: amperage draws, air pressure readings, vibration, temperature, resistance, voltage, gas pressure, humidity, indoor air quality
information: history of work done, deficiency report, maintenance records, client feedback, observations, test results, flow charts, fan curves

Knowledge
Reference Code	Learning Outcomes and Objectives
E-20.01.01L	demonstrate knowledge of system faults identify symptoms of system faults
E-20.01.02L	demonstrate knowledge of procedures to diagnose system faults identify tools and equipment used to diagnose system faults, and describe their procedures for use identify hazards, and describe safe work practices to diagnose system faults describe procedures to diagnose system faults identify types of tests and readings required to diagnose system faults describe procedures to perform calculations to determine system performance apply information from applicable standards to diagnose system faults

Range of Variables (include, but not limited to)

symptoms of system faults: sounds, vibration, odours, heat build-up, increased amperage draw, mold, decreased airflow
tests and readings: amperage draws, air pressure readings, vibration, temperature, resistance, voltage, gas pressure, humidity, indoor air quality

E-20.02 Repairs worn or faulty components

NL	NS	PE	NB	QC	ON	MB	SK	AB	BC	NT	YT	NU
yes	yes	NV	yes	yes	yes	yes	yes	yes	yes	NV	NV	NV

Skills
Reference Code	Performance Criteria	Evidence of Attainment
E-20.02.01P	select and use tools and equipment	tools and equipment are selected and used according to project requirements
E-20.02.02P	order components	components are ordered according to project requirements
E-20.02.03P	shut off utility services to appliance	utility services to appliance are shut off according to project requirements and safety procedures
E-20.02.04P	disassemble equipment and components	equipment and components are disassembled in required sequence according to job requirements
E-20.02.05P	replace and modify faulty and obsolete components	faulty and obsolete components are replaced and modified if required
E-20.02.06P	reassemble and tighten components	components are reassembled and tightened according to manufacturers’ specifications
E-20.02.07P	perform tests and readings	tests and readings are performed to verify that system is operating according to job requirements
E-20.02.08P	prepare service history	service history is recorded in logbook according to job standards

Range of Variables (include, but not limited to)

components: fan belts, motors, isolators, sheaves, coils, fasteners, ductwork, batteries, controls, bearings, pillow blocks, electrical components
utility services: gas, electrical, water
tests and readings: amperage draws, air pressure readings, filter conditions

Knowledge
Reference Code	Learning Outcomes and Objectives
E-20.02.01L	demonstrate knowledge of procedures to repair system components identify tools and equipment used to repair system components, and describe their procedures for use identify hazards, and describe safe work practices to repair system components describe procedures to repair system components identify considerations when repairing system components identify electrical devices, and describe their purpose, characteristics and applications describe procedures to perform calculations to determine system performance apply information from applicable standards to repair system components
E-20.02.02L	demonstrate knowledge of regulatory requirements to repair system components identify codes, standards and jurisdictional regulations to repair system components
E-20.02.03L	demonstrate knowledge of sustainability and environmental stewardship practices describe repair practices that minimize waste describe procedures to dispose of and recycle materials

Range of Variables (include, but not limited to)

procedures to repair system components: lock-out/tag-out, replacing components, calibrating (e.g., tension, speed, motors, temperature, pressure), aligning, adjusting, reassembling, tightening
components: fan belts, motors, isolators, sheaves, coils, fasteners, ductwork, batteries, controls, bearings, pillow blocks, electrical components
considerations: type of replacement components, manufacturers’ specifications, location of components, downtime during repair
electrical devices: circuit breakers, disconnects, overload heaters, GFI, fuses, PLC, motors, variable speed drives (VSD), flow switches, thermostats, capacitors
standards: SMACNA, ASHRAE, ANSI, NBC, CSA, Health Canada, TSB

Major Work Activity E - Performs maintenance and repair

On this page

Task E-19 Performs scheduled maintenance

Task Descriptor

E-19.01 Performs maintenance inspections

Range of Variables (include, but not limited to)

Range of Variables (include, but not limited to)

E-19.02 Services components

Range of Variables (include, but not limited to)

Range of Variables (include, but not limited to)

Task E-20 Repairs faulty systems and components

Task Descriptor

E-20.01 Diagnoses system faults

Range of Variables (include, but not limited to)

Range of Variables (include, but not limited to)

E-20.02 Repairs worn or faulty components

Range of Variables (include, but not limited to)

Range of Variables (include, but not limited to)