HVAC Preventive Maintenance Mechanic

Ft Hood, TX

CHENEGA BASE & LOGISTICS SERVICES, LLC

The HVAC Preventative Maintenance Mechanic maintains, repairs refrigeration, air conditioning, and water cooling equipment, boilers, HVAC and associated physical plant equipment. Will inspect, repair, replace, and perform maintenance on HVAC systems to ensure they remain in a fully operational condition. Installs services and repairs environmental-control systems in office buildings and other commercial establishments, utilizing knowledge of refrigeration theory, pipefitting and structural layout. Responsibilities Perform supply analysis using GFEBS Master Data, ensure accuracy of said data, present findings on filter consumption and run rate, annual and periodic requirements, and provide detailed supply forecast and consumption reports and records for use in support of the HVAC filter supply purchases. Provide all maintenance and repair of all heating, ventilating, air conditioning systems and related energy management systems. Operate, maintain and repair air compressors, together with distribution lines and all valves and devices for air control. Operate, maintain and repair pumps, handling brines, or other secondary refrigerating liquids, together with all valves, appurtenances and lines used in the system Maintain proper operation during seasonal changes and recalibrate controls based on seasonal conditions to ensure energy efficient operation. Operate, maintain, and repair heating systems, boiler control systems to meet manufacturer's specifications. Diagnosis repair needs and performs corrective measures to include mechanical, plumbing and electrical functions. Maintain records for equipment and daily logs. Perform preventive maintenance, diagnosis and repair on conventional air conditioning systems, freezers, refrigeration and associated physical plant equipment.. Maintain, repair and replace thermostatic expansion and pressure limited devices and valves, motors, compressors, starters, thermostats, piping, coils boiler burners, and other assorted HVAC system controls and components. Trace electrical circuits, installs and repairs time clocks and regulatory controls and makes minor repairs to electrical circuit breakers and motor controls. Perform related work assigned or required, such as balancing capacities and loads of refrigeration and air conditioning equipment; laying out and/or making estimates for repairs and new installations; ordering parts and equipment. Perform work as required to repair or replace plumbing system components, roof and area drains, door systems, and other general components of buildings. Support the development of a refrigerant management plan to meet contract requirements Operate, repair, and maintain cooling towers Operate, repair, and maintain the steam systems, heat exchangers, and the high temperature hot water systems. Perform daily water field tests for open HVAC loops for pH, TDS, conductivity, corrosion inhibitor concentration, and concentration of biocides. Results shall be entered daily into the on-line system provided by the Government, and paper records maintained on site. Maintain building temperature during occupied hours to comply with ASHRAE Standard 55-2013, Thermal Environmental Conditions for Human Occupancy. Adjust cooling, heating, reheating, preheating, and humidity to control environmental conditions required by the equipment served by these systems. Maintain, diagnose, test, overhaul, install, and repair a variety of refrigeration, dehumidification, AC, ventilation, and heating systems. Mount compressor and condenser units on platform or floor, using hand tools, following blueprints or engineering specifications. Fabricate, assemble and install ductwork and chassis parts, using portable metalworking tools and welding equipment Replace filters, belts, and adjusts temperatures for environmental control Install evaporator unit in chassis or in air duct system, using hand tools Cut and bend tubing to correct length and shape, using cutting and bending equipment and tools Cuts and threads pipe, using machine or hand threading equipment Join tubing or pipes to various refrigerating units by means of sleeves, couplings or unions, and solders joints, using torch, forming complete circuit for refrigerant Install expansion and discharge valves in circuit. Connect motors, compressors, temperature / humidity controls, and circulating ventilation fans to control panels and connects control panels to power source Install air and water filters in completed installations Inject nitrogen in compressor to test systems and add freon gas to build up prescribed operating pressure Test joints and connections for gas leaks, using leak testers and soap solution Wrap pipes in insulation and secures them in place Replace defective breaker controls, thermostats, switches, fuses and electrical wiring to repair installed units, using electrician’s hand tools and test equipment Observe pressure and vacuum gauges and adjust controls to insure proper operation Must wear and use all required personal protective equipment (PPE), such as safety glasses, safety shoes, ear plugs, hardhat, etc. Operate, repair, and maintain compressed air systems Ensures work orders when complete are properly filled out and returned to work management Support the project Safety Plan through personal involvement in all aspects of safety, including training and attention to the adherence to safety requirements pertaining to particular trades or skills. Other duties as assigned Qualifications High School diploma or GED Minimum four (4) years field experience as a technician maintaining commercial or industrial HVAC systems and components in support of an industrial Preventive Maintenance Program. An EPA certification (CFC Certification type 1& type 2, Universal which shall be maintained IAW Section 608 of the Clean Air Act, 1990 EPA Mandatory Technician Certification (by November 14, 1994). Possess and maintain a valid Driver’s License. Knowledge, Skills And Abilities Industry experience in related shop mathematics and the interpretation and application of building plans, specifications, schematics, diagrams, blueprints, and sketches of all complexity Knowledge of construction and operating characteristics of fan coil units and limited knowledge of dual temperature water heating and air conditioning systems. Ability to determine when mechanical, electrical, and structural components of fan coil units need to be repaired or replaced. Ability sufficient to disassemble fan coil units, locate mechanical and electrical defects, and make proper repairs. Ability to separate soldered joints during disassembly and solder pipes back together after cleaning or replacing coils. Ability to follow electrical diagrams and connect wires to switches, relays, thermostats accordingly. Ability to identify equipment and have a basic operating knowledge of all equipment serviced in order to recognize unusual noises, check for proper oil levels and frayed or loose belts. Ability to perform preventive maintenance tasks and limited repairs. Knowledge of the characteristics and use of various lubricants. Knowledge of the frequency, procedures, and prescribed methods for lubricating components; changing filters and oil. Ability to follow preventive maintenance schedules and interpret sketches, wiring diagrams and equipment manuals. Ability to use tools and equipment such as screwdrivers; various wrenches; pliers; grease guns; compressed air blowers or high-pressure water cleaners; hand, pneumatic, or electric pumps. Ability to operate a motor vehicle. Ability to operate hand and foot controls for starting, stopping, backing, and driving the vehicle. Ability to judge overhead and side clearances, turning radius, braking distance, and proper distance to remain from the vehicle ahead. Knowledge of safety rules and regulations and other posted rules for moving vehicles. Physical Demands While performing the duties of this Job, the employee is regularly required to sit and talk or hear. The employee may use repeated motions that include the arms, wrists, hands and/or fingers. The employee is occasionally required to walk, stand, climb, balance, stoop, kneel, crouch, or crawl. The employee must occasionally lift and/or move up to 25 pounds. Specific vision abilities required by this job include close vision. #J-18808-Ljbffr Chenega Corporation EH&F