Chiller Technician at General Motors LLC — Milford, MI

Job Description

The Role

The Chiller Technician reports to the Group Leader of the Engineering Maintenance and Technical Support (EMT) support organization. The EMT team is primarily responsible for specifying, sourcing, engineering, integrating, safely commissioning and developing a robust maintenance model for test equipment within the lab. This role directly affects the quality, durability and performance of vehicles and related products developed by General Motors.

This job is based in General Motors’ Milford Proving Grounds Energy and Emissions Laboratories. The lab and results it produces are used by GM’s growing team of engineers in support of the vision of a world with Zero Crashes, Zero Emissions and Zero Congestion.

The Chiller Technician role is a good fit for a qualified individual who is interested in state-of-the-art technologies and testing methods, system-level integration, and related equipment in a laboratory setting.

What You'll Do

• Large tonnage chiller operation, in depth diagnostics, troubleshooting and maintenance including Universal Refrigerant Handlers License
• Low pressure/ Low temperature systems
• DX, flooded and absorption systems
• Reciprocating, Screw, Scroll and Centrifugal compressor operation
• Air- and water-cooled condensing systems
• Strong in reading wiring schematics, electrical troubleshooting complex circuits and systems that may have redundant feeds or mixed voltages up to 480 volts
• Be able to track, troubleshoot and diagnose building electrical distribution
• Competent in use of multi-meter, megger and signal generator operation
• Understand shut trip operation, gas detection system integration and be able to troubleshoot multi feed systems
• Solar Array panel diagnostics
• UPS System diagnostics
• High Voltage capable up to but not limited to 4160 volts
• Complete understanding in theory and operation of mechanical pump circuits with bypass control and multiple load sources. Be competent in reading one line drawings of mechanical systems
• Have experience with pneumatic control or actuated systems
• Possess solid background in preventative maintenance on many different types and styles of equipment including building and process
• Understand wind tunnel design, operation and troubleshooting
• Complete understanding of steam used in heating, humidity control and building systems including steam generation.
• Be able to troubleshoot traps, condensate systems, steam to product heat exchangers and other systems dependent on steam operation
• Have a solid understanding of chemistry and PH control in product systems used in the facility
• Be able to understand and troubleshoot Variable Frequency Drive operation, control and adjustment
• Experienced in rigging equipment and unstable loads
• Operate forklift, powered man lifts and other powered equipment commonly used in facility service
• Able to use dial indicator and laser guided alignment tools to precise measurements
• Be familiar with vibration data collection, ultrasonic testing and thermal imaging to be used in predictive maintenance program
• Heavy lifting as required
• Able to work at heights and in various temperatures as required
• Have good organizational skills, be a solid communicator who is timeline motivated with a safety-based mindset
• Serve as a contact to internal and external stakeholders for Engineering Maintenance and Technical support related activities, including day-to-day operations and future planning initiatives
• Monitor ongoing tasks, providing regular status reports to stakeholders and leadership while proactively identifying and escalating roadblocks when appropriate
• Act as a technical resource to internal and supplier teams in all aspects of Engineering Maintenance and Technical Support
• Ability to create, launch, and execute a preventative equipment maintenance system and related plans for key facility infrastructure supporting testing activities

• 5+ years of related experience in Large Tonnage Chiller service role
• Demonstrated knowledge and experience with Maximo as used for Preventive maintenance, planning and execution
• Demonstrated ability to work with a high level of autonomy in a complex environment, managing multiple maintenance events, by establishing priorities and executing with minimal supervision
• Experience with equipment used in Emissions Development and Certification testing (Building and Process)
• Experience utilizing building management systems for diagnosis and troubleshooting overall operation
• Experience working with equipment suppliers and installation contractors
• Demonstrated ability to work effectively within a multi-disciplinary team, where issues are complex in nature
• Ability to read and interpret P&ID/One line/ Electrical and Control diagrams for use in diagnosis and troubleshooting of hardware

• 10+ years of related experience in Chiller service role
• Understand wind tunnel design, operation, and troubleshooting
• Understanding of theory, operation, and application of mechanical pump circuits, steam, humidity control, Reverse Osmosis and CAP DI systems used to support process operation
• Vibration data collection, ultrasonic testing, and thermal imaging exposure to be used in predictive maintenance programs
• Experience with equipment maintenance processes in an industrial setting
• Experience working in an ISO 17025 or ISO 9001 accredited environment

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