Maintenance Mechanic II

Maintenance Mechanic II

UCAR is excited to announce the job opening for the Maintenance Mechanic II. This position performs installation, preventive maintenance, troubleshooting, repair, and operation of commercial and semi-industrial mechanical systems, including heating, ventilation, air conditioning (HVAC), refrigeration, plumbing, boilers, hydronic systems, pumps, and associated equipment. The Maintenance Mechanic II is expected to independently diagnose and resolve complex mechanical system problems, utilize Building Automation Systems (BAS) for system monitoring and troubleshooting, and provide technical guidance to other maintenance personnel as needed.

The position supports critical facility operations across multiple UCAR|NSF NCAR locations and participates in after-hours on-call rotations and emergency response activities.

• High school diploma or equivalent.
• Completion of a recognized HVAC/mechanical technical school program, applicable apprenticeship, or equivalent combination of technical education and experience.
• Journey-level mechanical worker with a minimum of six (6) years of progressively responsible experience in commercial, institutional, industrial, or facilities mechanical maintenance, or an equivalent combination of education, apprenticeship training, and experience.
• Experience with critical facility HVAC systems and infrastructure.
• Demonstrated experience independently troubleshooting, maintaining, and repairing commercial HVAC and mechanical building systems.
• Experience working with boilers, hydronic systems, pumps, air handling equipment, refrigeration equipment, plumbing systems, and associated controls.
• Experience utilizing BAS systems as part of mechanical system operation and troubleshooting.
• Possession of a valid Colorado Driver's License and driving record compliant with UCAR's liability insurance requirements.
• Current EPA Section 608 certification appropriate for assigned refrigeration work, with Universal Certification preferred.

• Independently install, maintain, troubleshoot, repair, and operate commercial HVAC, refrigeration, plumbing, pneumatic, hydraulic, steam and hot-water boiler, hydronic, and closed-loop heating and cooling systems.
• Diagnose mechanical equipment and system failures using established troubleshooting methods, technical documentation, system operating data, and field measurements.
• Maintain and repair air handling units, rooftop units, pumps, motors, valves, heat exchangers, coils, compressors, refrigeration equipment, and other associated mechanical components.
• Perform preventive and predictive maintenance according to established schedules, manufacturer recommendations, equipment condition, and facility requirements.
• Identify developing equipment problems and recommend corrective repairs or maintenance activities to improve system reliability and reduce unplanned equipment failures.
• Monitor and adjust chemical levels associated with water treatment and mechanical systems as required.
• Operate and utilize BAS platforms to monitor equipment, review alarms and trends, adjust operating parameters, and assist in diagnosing mechanical and controls-related problems.
• Troubleshoot interactions between mechanical equipment, controls, sensors, actuators, and BAS sequences and coordinate with Controls, Electrical, Engineering, and outside contractors when necessary.
• Perform refrigeration service in accordance with applicable EPA requirements and UCAR procedures.

• Participate in scheduled on-call rotations with other mechanical maintenance team members in accordance with UCAR On-Call procedures. Additional compensation applies for on-call activities.
• Respond to after-hours mechanical and facility emergencies, which may include nights, weekends, and holidays.
• Independently assess mechanical system failures and determine appropriate immediate corrective actions to protect personnel, research activities, facilities, and equipment.
• Troubleshoot HVAC, heating, cooling, plumbing, refrigeration, and other critical mechanical system failures during emergency conditions.
• Establish temporary operating configurations or install temporary mechanical infrastructure when necessary to maintain critical facility operations during equipment failures, construction activities, or planned outages.
• Escalate complex or high-risk conditions to the Mechanical Supervisor, Facilities leadership,…