HVAC Electronics Mechanic (DDC)
- Salary Offer $30.43 - $37.37 per hour
- Experience Level Journeyman
- Total Years Experience 5-10
This position is located in the Architect of the Capitol, Superintendent, House Office Buildings, Assistant Superintendent Facilities Operations Division, Mechanical Systems Branch. The individual performs progressively more complex assignments on electronic equipment and control systems frequently solving multi-dimensional problems while inspecting, troubleshooting, maintaining and adjusting heating and cooling systems.
Tour of duty: 6:00 a.m. – 2:30 p.m. This position is emergency essential. Depending on the type of emergency, the employee may be required to report to work during emergency situations.
This is a career ladder position. The incumbent must demonstrate the ability to accomplish progressively more challenging control systems maintenance and independent work. Completing a prescribed training curriculum and clearly demonstrating course training objectives are met coupled with hands-on experience are prerequisites for advancement to the next grade.
Duties quoted are at the WG-11.
The individual selected for this position will:
Inspect and Troubleshoots HVAC Electronics and DDC
- Uses a precise knowledge of Direct Digital Controls (DDC) for advanced troubleshooting and repair abilities.
- Possess the ability to make changes to digital control programming for Automated Logic and Alerton control systems. Uses skills to troubleshoot and edit a WebCTRL program.
- Troubleshoots tools such as Wireshark and its usage in BACnet discovery.
- Possess a basic knowledge of Automated Logic clippings and their usage.
- Uses broad, practical and precise knowledge of electronic principles and practices to perform a complete range of electronic mechanical work relative to testing, troubleshooting, repairing, adjusting, aligning and calibration of complex DDC system components.
- Performs operational tests of newly installed electronic assemblies and major components.
- Performs tests to identify complex integrated circuitry malfunctions and repair the interface of components in relation to operational performance requirements.
- Verifies and proof tests equipment being used to determine if such equipment and/or procedures are within acceptable tolerances.
- Independently or as a team member, installs, overhauls, repairs, modifies and performs operational checks and built-in tests on a variety building application systems, sub-systems and related electrical, electronic, mechanical and hydraulic components. Troubleshoots, isolates and corrects malfunctions, using system test sets and diagnostic equipment.
- Utilizes a knowledge of Building Automation Systems (BAS) to diagnose and coordinate repairs with EMCS, where necessary and to repair DDC and improve operating efficiency. Acknowledges and investigates error alarms to maintain system integrity.
- Isolates problems and determines nature and scope of repairs and replacements required by making voltage, frequency calculations, tracing circuits and relationships in the signal flow through the use of schematics and applicable drawings.
HVAC Operation and Performance
- Possess a broad understanding of control strategies for chill water distribution systems. Understands and implements reset control strategies and 100% outside air control strategies for improved HVAC system performance.
- Develops heating, ventilation and air conditioning (HVAC) operational schedules using Automated Logic WebCTRL system.
- Understands and implements feedforward and feedback control loops, how they differ and their purpose in control strategies.
- Troubleshoots HVAC operational issues using Automated Logic WebCTRL’s alarms, trends and reporting features. Uses diagnostic fault tools for advanced troubleshooting of operational issues.
- In the absence of established documentation determines the method and technique necessary to perform electronic tests.
- Performs operational checks of advanced electronic assemblies in accordance with vendor procedures.
- Fuses chilled water or refrigerant lines to condensers, evaporators, compressors and controls. Evacuates, dehydrates and charges system with appropriate refrigerants. Checks for refrigerant leakages. Resets controls essential to maintain desired temperatures, pressure and humidity.