# Elevator and Escalator Installers and Repairers > Assemble, install, repair, or maintain electric or hydraulic freight or passenger elevators, escalators, or dumbwaiters. - Code: 47-4021.00 (O*NET-SOC; SOC 2018 47-4021) - Family: [Construction & Extraction](https://foundation.org.ai/occupations#family-47), one of its 65 occupations - Tasks: 20 tasks (16 core and 4 supplemental) - Page: https://foundation.org.ai/occupations/47-4021.00 - JSON: https://foundation.org.ai/data/tasks/47-4021.00.json ## What the work is made of 1. Inspect wiring connections, control panel hookups, door installations, and alignments and clearances of cars and hoistways to ensure that equipment will operate properly. Core task · Task 11571 · Rated by 55 people who do the job, August 2023 2. Assemble, install, repair, and maintain elevators, escalators, moving sidewalks, and dumbwaiters, using hand and power tools, and testing devices such as test lamps, ammeters, and voltmeters. Core task · Task 11564 · Rated by 54 people who do the job, August 2023 3. Disassemble defective units, and repair or replace parts such as locks, gears, cables, and electric wiring. Core task · Task 11572 · Rated by 55 people who do the job, August 2023 4. Check that safety regulations and building codes are met, and complete service reports verifying conformance to standards. Core task · Task 11567 · Rated by 53 people who do the job, August 2023 5. Locate malfunctions in brakes, motors, switches, and signal and control systems, using test equipment. Core task · Task 11566 · Rated by 55 people who do the job, August 2023 6. Adjust safety controls, counterweights, door mechanisms, and components such as valves, ratchets, seals, and brake linings. Core task · Task 11569 · Rated by 55 people who do the job, August 2023 7. Read and interpret blueprints to determine the layout of system components, frameworks, and foundations, and to select installation equipment. Core task · Task 11570 · Rated by 55 people who do the job, August 2023 8. Connect car frames to counterweights, using steel cables. Core task · Task 11576 · Rated by 54 people who do the job, August 2023 9. Maintain log books that detail all repairs and checks performed. Core task · Task 11573 · Rated by 54 people who do the job, August 2023 10. Connect electrical wiring to control panels and electric motors. Core task · Task 11568 · Rated by 55 people who do the job, August 2023 11. Test newly installed equipment to ensure that it meets specifications, such as stopping at floors for set amounts of time. Core task · Task 11565 · Rated by 55 people who do the job, August 2023 12. Participate in additional training to keep skills up to date. Core task · Task 11574 · Rated by 55 people who do the job, August 2023 13. Operate elevators to determine power demands, and test power consumption to detect overload factors. Core task · Task 11582 · Rated by 54 people who do the job, August 2023 14. Install electrical wires and controls by attaching conduit along shaft walls from floor to floor and pulling plastic-covered wires through the conduit. Core task · Task 11580 · Rated by 55 people who do the job, August 2023 15. Attach guide shoes and rollers to minimize the lateral motion of cars as they travel through shafts. Core task · Task 11575 · Rated by 55 people who do the job, August 2023 16. Install outer doors and door frames at elevator entrances on each floor of a structure. Core task · Task 11579 · Rated by 55 people who do the job, August 2023 17. Assemble elevator cars, installing each car's platform, walls, and doors. Supplemental task · Task 11578 · Rated by 55 people who do the job, August 2023 18. Bolt or weld steel rails to the walls of shafts to guide elevators, working from scaffolding or platforms. Supplemental task · Task 11577 · Rated by 54 people who do the job, August 2023 19. Assemble electrically powered stairs, steel frameworks, and tracks, and install associated motors and electrical wiring. Supplemental task · Task 11583 · Rated by 54 people who do the job, August 2023 20. Cut prefabricated sections of framework, rails, and other components to specified dimensions. Supplemental task · Task 11581 · Rated by 53 people who do the job, August 2023 ## More in Construction & Extraction - [Boilermakers](https://foundation.org.ai/occupations/47-2011.00): 17 tasks - [Brickmasons and Blockmasons](https://foundation.org.ai/occupations/47-2021.00): 14 tasks - [Carpenters](https://foundation.org.ai/occupations/47-2031.00): 29 tasks - [Carpet Installers](https://foundation.org.ai/occupations/47-2041.00): 16 tasks - [Cement Masons and Concrete Finishers](https://foundation.org.ai/occupations/47-2051.00): 26 tasks - [Construction and Building Inspectors](https://foundation.org.ai/occupations/47-4011.00): 19 tasks - [Construction and Related Workers, All Other](https://foundation.org.ai/occupations/47-4099.00): no tasks listed - [Construction Laborers](https://foundation.org.ai/occupations/47-2061.00): 27 tasks - [Continuous Mining Machine Operators](https://foundation.org.ai/occupations/47-5041.00): 15 tasks - [Derrick Operators, Oil and Gas](https://foundation.org.ai/occupations/47-5011.00): 15 tasks - 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