Job address
US
Company size
11-50 employees
Job sector
Architecture & Construction
occupation category
Heating, Air Conditioning, and Refrigeration Mechanics and Installers
Job type
Contract
Work environment
In person
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Job details
Required skills
- Discusses heating or cooling system malfunctions with users to isolate problems or to verify that repairs corrected malfunctions
- Design and install steel piping in residential and commercial applications using fitting geometry including allowances, methods of joining and threading, installation of hangers and other support means
- Inspect and maintain common packaged and split HVACR systems
- Troubleshoot and repair components, controls, and supplemental heat systems
- Designs and installs duct system using the relationship between pressure, velocity, and volume in distribution systems
- Identify IAQ based HVAC equipment and explain their use to maintain acceptable IAQ
- Operate, install, and troubleshot temperature controls and various types of thermostats
- Operate and adjust common zoning, damper & Variable Actuator Vein/Variable Valve Timing Actuator (VAV/VVT) systems and identify common system/component failures
- Adheres to IAQ (Indoor Air Quality) standards pertaining to maintenance techniques such as ensuring proper air filtration and building ventilation
- Uses safe soldering and brazing techniques when joining copper pipe and tubing sufficient in the installation and overhauling of refrigeration, air conditioning, heating, ventilation units and related machinery
- Use wiring diagrams necessary to troubleshoot control system failures
- Adhere to applicable local, state and federal regulations (EPA [environmental], DOT [moving vehicle] and OSHA [worker safety])
- Troubleshoot common service issues and repairs as well as installation methods
- Uses DDC (Direct Digital Controller) systems used for troubleshooting, scheduling, and monitoring/trending sufficient to perform field testing, installation, and calibration
- Applies knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction
- Identify and describe compressor failures due to electrical, mechanical, hydraulic, and lubrication issues
- Selects and maintains appropriate mechanic’s hand tools and wrenches, micrometers calipers, pipe cutters, threaders, brazing and soldering equipment, gas welding equipment, small drill presses, and electrical test equipment in order to adjust, repair, replace, and overhaul refrigeration, air conditioning systems and related machinery for HVAC work
- Evaluate cooling systems and determine specific deficiencies and corrective actions required
- Identify common seals, bearings, gaskets and packing materials
- Demonstrate system evacuation procedures including recovery, recycle, and reclamation of refrigerants
- Employs software to locate job assignments
- Use pressure-temperature charts to calculate system superheat and sub cooling
- Troubleshoot common control circuits and load components
- Performs routine maintenance on equipment and determining when and what kind of maintenance is needed
- Follows procedures in Safety Data Sheets (SDS) system
- Safely disposes of recovery/reclaiming cylinders in order to safely reuse or dispose of refrigerant
- Install flexible duct connectors and systems
- Troubleshoot and replace a four-way valve/reversing valve in a heat pump system
- Follows ladder safety protocol
- Use safe lifting procedures
- Install various types of pipe insulation materials
- Identify and install common types of sheet metal ducts using joining, support and reinforcement methods
- Reads and interprets blueprints, design specifications, or manufacturers' recommendations to ascertain the configuration of heating or cooling equipment components and to ensure the proper installation of component
- Use a velometer to determine system airflow
- Resolve IAQ issues by explaining how acceptable IAQ can be achieved
- Identify and install duct system components, fittings and support systems
- Diagnose and troubleshoot gas heating systems, controls, flame and pilot verification systems, and components
- Determine IAQ issues and effects on occupants
- Maintains accurate records complying with rules and regulations such as EPA 608 and SCAQMD 1415
- Inspect cooling system for primary controls, safeties, refrigerant control valves, and regulators
- Identify and install sheet metal dampers, access doors and other accessories
- Test the properties of air and psychometrics as related to human comfort and maintaining conditioned spaces
- Uses and maintains a duct calculator and solve for airflow related variables and duct sizing/flow calculations
- Follows safety procedures when handling and transporting refrigerants, pressurized gases, and combustibles such as Freon, R-22, R-134, and R410
- Adjusts refrigeration, air conditioning, ventilation and heating equipment and control devices including pneumatic, low voltage control wiring, and direct digital controls in order to properly troubleshoot, diagnose, and repair units
- Internally and externally insulate and attenuate metal ducts
- Use common refrigerant retrofit processes including system cleanup and lubricant changes
- Identify and install appropriate vent types for condensing and non-condensing equipment
- Perform lockout/tag out procedures
- Install and support soldered/brazed joints and mechanical/flared connections of various types of copper pipe/tubing
- Use proper charging techniques with various types of zeotropic and zeotropic refrigerants
- Perform diagnostics on various types of single and three phase motors and wiring methods including multispeed, start relays and start/run capacitors
- Use energy efficient insulation methods and sealing techniques for duct systems
- Check refrigerant circuits for leaks using equipment and procedures
- Use tools and instruments to test air balance in HVAC systems
- Troubleshoot and service electronically commutated motors (ECM)
- Diagnose and troubleshoot heat pump systems, controls, and components
- Diagnose and correct operational issues of natural draft, power draft, and induced draft equipment types
