A class incumbent is involved in advanced heating, ventilation, air conditioning and refrigeration work installing, repairing, replacing and maintaining system components in various structures throughout the state and has credentials to service these systems according to federal law.
Nature and Scope
An incumbent reports to a technical or administrative supervisor and provides mechanical and electrical installation, maintenance and replacement services for HVAC and refrigeration system components to ensure proper safety, maintenance and operation of State facilities. A significant aspect of this work involves preventative maintenance and troubleshooting activities to minimize down time and to correct malfunctions in complicated mechanical and electrical systems; determines and analyzes mechanical and electrical systems and its components, and oversees the work of certified/skilled mechanics or HVAC/R apprentices involved in servicing equipment. An incumbent sees that assignments are carried out in accordance with Federal and State regulations and standards, as set forth by the American Society of Heating, Refrigeration and Air Conditioning Engineers and the National Electrical Code.
Essential functions are fundamental, core functions common to all positions in the class series and are not intended to be an exhaustive list of all job duties for any one position in the class. Since class specifications are descriptive and not restrictive, incumbents can complete job duties of similar kind not specifically listed here.
Identifies and diagnoses malfunctioning systems to include air conditioning, refrigeration, ventilation, boilers, heat pumps, environmental units and related electrical components. Repairs and replaces systems to comply with federal, State, ASHRAE standards and the National Electrical Code.
Conducts preventative maintenance on complex HVAC/R systems and determines the need for repair and /or replacement of system components to include mechanical, electrical and/or fluid.
Oversees the work of certified/skilled mechanics or HVAC/R apprentices in the performance of maintenance, repair and servicing of HVAC/R equipment.
Diagrams mechanical, electrical and structural modifications to heating, ventilation, air conditioning, refrigeration, electrical and pneumatic control systems.
Interprets various diagrams, blue prints and layouts.
Identifies and recommends the use of contractors when resources are limited.
Estimates time and materials required to complete a variety of repair and replacement projects.
Maintains records of work performed, materials used, time spent on assignments, and refrigerant used logs in accordance with established procedures and federal law.
Operates various electrical meters and testers, humidity recorders, leak testing equipment, refrigeration gauges, temperature recorders, torches, recovery units, vacuum pumps and micron meter and related testing and repair devices.
Requisitions supplies, materials and labor.
Knowledge, Skills and Abilities
The intent of the listed knowledge, skills and abilities is to give a general indication of the core requirements for all positions in the class series; therefore, the KSA’s listed are not exhaustive or necessarily inclusive of the requirements of every position in the class.
Knowledge of the methods and techniques used in the installation, maintenance and repair of complex heating, ventilation, air conditioning and refrigeration equipment, systems and components.
Knowledge of federal, State, American Society of Heating, refrigeration and Air conditioning Engineers standards and the National Electrical Code and their application.
Knowledge of hazards and safety precautions of the trade.
Knowledge of interpreting wiring diagrams and blueprints.
Knowledge of safe, efficient operation and maintenance of heating, air conditioning, ventilation, refrigeration and electrical systems.
Knowledge of mechanical and electrical principles and methods used in the design and operation of various systems.
Knowledge of the operation and repair of Direct Digital control systems.
Knowledge of the principles and practices of supervision.
Skill in application of standard practices and techniques in the use of tools and materials commonly used in the HVAC/R and electrical trade.
Skill in estimating cost and time required to perform work projects.
Skill in determining cause(s) of malfunctioning mechanical and electrical systems and taking appropriate, corrective action.
Ability to establish and maintain effective working relationships with fellow employees and others.
Ability to review the work of certified/skilled mechanics or HVAC/R apprentices.
JOB REQUIREMENTS for HVAC/Refrigeration Technician Applicants must have education, training and/or experience demonstrating competence in each of the following areas:
Possession of Delaware Master HVACR or Master HVACR Restricted license OR possession of a Master HVACR or Master HVACR Restricted license from another state which meets Delaware license requirements or equivalent requirements as determined by the State Board of Plumbing, Heating, Ventilation, Air Conditioning, and Refrigeration Examiners.
Possession of a Universal CFC certification.
Six months experience in HVAC/R installation, troubleshooting, and repair.
Six months experience in estimating cost, time and materials for projects.
Knowledge of interpreting blueprints and schematics.
Knowledge of staff supervision acquired through course work, academic training, training provided through an employer, or performing as a lead worker overseeing the work of others; OR supervising staff which may include planning, assigning, reviewing, and evaluating the work of others; OR supervising through subordinate supervisors a group of professional, technical, and clerical employees.
Possession of a valid Driver's License (not suspended, revoked or cancelled, or disqualified from driving).