Repair and maintain facilities structures; perform minor repairs to building door hardware, fire, life, and safety protection equipment/systems, sprinkler systems, and irrigation lines; maintain indoor/outdoor facilities, fans, lighting, and related. Operate, maintain, and repair mechanical systems; troubleshoot total building and/or facility mechanical systems to identify and correct problems; adjust system performance as needed to account for changes in seasons, space utilization, occupancy, and other facility needs.