Air Conditioning Equipment Mechanic

Air Conditioning Equipment Mechanic

Major duties include but not limited to:

• Systems and equipment use several methods of air conditioning such as mechanical compression, direct expansion systems and chilled water systems using central chilling units. There are central air-conditioning plants including station-chilled water plant totals 5803.5 tons and 2495.5 tons, 508.5 tons and 328.5 tons of package and window units, 16 cold storage vaults with individual compressors, and numerous other refrigeration compressors and equipment for chilled water and ice supply, including commercial and residential types totaling an additional 300 tons of refrigeration.
• Requesting materials, parts, equipment, and chemicals for plants and unit maintenance and operation; planning for alterations, repairs, and maintenance of all operating equipment; observing and making necessary changes for the best efficiency of maintenance and repairs and operations; and conserving manpower, utilities, and supplies.
• Utilizing the proper method of recovering refrigerant and daily checks of operation of the chillers, chiller water pumps, condensing water pumps, tower fans and motors, thermostats, and control air compressors. Tests and treats the chilled water and the condensate water to prevent scale and corrosion. Inspects the daily chemical analysis of condenser water and other treated water for accuracy and effectiveness of treatment.
• Dismantling, repairing, and reassembling complete units such as pumps, impellers, compressors, chillers, receivers, and evaporators. Repair work involves overhauling valves by adjusting or replacing gaskets, springs, floats, diaphragms, valve fittings, seals, and coupling; and aligning motors and flywheel drives.
• On spring start-up all strainers must be removed and cleaned, drain valves closed, towers flushed and cleaned, towers filled and treated, bearings lubricated, belts checked and replaced as necessary, dampers properly positioned, control air compressor checked for proper operation, and all thermostats set for the designated temperature.
• For fall shut-down, all equipment must be lubricated, worn parts must be replaced, and seasonal maintenance must be performed as necessary; systems must be evaluated, changed, and tested as necessary.
• Maintains continuous operation and performs maintenance and repairs on various types of air conditioning and refrigeration by recognizing the cause of equipment malfunctions or faulty equipment and making the proper adjustments or needed repairs.
• Plans, selects, and orders material for service and repair work. Works from drawings, schematics, blueprints, work orders, and verbal instructions to perform assigned tasks.
• Answers calls for non-scheduled service which involves diagnosis and repair of commercial equipment with little or no supervision. Identifies abnormal function of equipment and control sequences and takes necessary action to correct problems.
• Maintains, installs, repairs, and replaces pneumatic and direct digital control (DDC) systems. Operates the campus-wide building automation system (BAS), currently the HVAC control systems. Uses computers, work stations, and hand-held interface devices to monitor, program, and change operational systems software as required.
• Incumbent monitors campus BAS throughout the day and makes necessary changes without work orders or supervisory instruction to prevent problems. Uses the ideology of "continuous commissioning" to ensure buildings are up to standards in order to prevent emergency calls.
• Incumbent responds to after work emergency calls from the Boiler Plant.

Work Schedule: Monday - Friday, 8:00 am - 4:30 pm

Position Description Title/PD#: Air Conditioning Equipment Mechanic/PD01013A

Physical Requirements:

Functional Requirements - Heavy lifting, 45 pounds and over; Moderate carrying, 15-44 pounds; Reaching above shoulder; Use of fingers; Both hands required; Walking (1-3 hours); Standing (1-3 hours); Crawling (1-3 hours); Kneeling (1-3 hours); Repeated bending (1-3 hours); Climbing, use of legs and arms; Both legs required; Operation of crane, truck, tractor, or motor vehicle; Near vision correctable at 13" to 16" to Jaeger 1 to 4; Far vision correctable in one eye to 20/20 and to 20/40 in the other; Depth perception; Hearing (aid permitted); Specific hearing requirements

Environmental Factors - Outside, Outside and inside; Excessive heat; Excessive cold; Excessive noise, intermittent; Dust; Solvents (degreasing agents); Electrical energy; Slippery or uneven walking surfaces; Working around machinery with moving parts; Working around moving objects or vehicles; Working on ladders or scaffolding; Working closely with others; Working alone; Protracted or irregular hours of work