Job Specification
REFRIGERATION MECHANIC
DEFINITION
Under direction, maintains and repairs refrigeration and/or
air conditioning equipment; does related work as required.
NOTE: The definition and examples of work for this title are for
illustrative purposes only. A particular position using this
title may not perform all duties listed in this job
specification. Conversely, all duties performed on the job may
not be listed.
EXAMPLES OF WORK:
Diagnoses the cause of malfunctions to refrigeration and air
conditioning equipment and makes repairs.
Tests various components of refrigeration systems such as
compressors, relays, and thermostats to locate source of
malfunction.
Inspects refrigeration machinery including cooler and
freezer units, using testing techniques and tools for locating
worn or broken parts to recognize the cause of faulty equipment.
Performs visual, audible, and mechanical checks to locate
defective parts.
Listens to operation of machinery and detects malfunctions
such as piston slaps, noisy valves, connecting rod knocks, and
rattling supports.
Reads thermometers, gauges, and temperatures of conditioned
spaces.
Looks for loose connections, faulty insulation, and
frayed/loose belts, gaskets, and pulleys.
Replaces major portions of different types of cooling or
refrigeration units such as compressors, condensers, expansion
valves, floats and service valves, thermostats, coils, and so
forth to make repairs according to accepted trade practice.
Cuts tubing to correct lengths, and bends and joins them to
various refrigeration units with sleeves, couplings, or unions to
provide a complete circuit for the refrigerant.
Performs standard maintenance repairs on various components
of cooling (refrigeration) systems which may include any of the
following: (1) rotary pump compressors; (2) various refrigerant
controls such as low and high pressure switches, automatic
thermostatic expansion valves, capillary or choke type or those
based on volume or quantity changes; (3) various motor controls
such as hermetically sealed motors and pressure controls,
thermostatic motor controls (remote), full and semiautomatic
defrosting controls, relays and other similar controls to protect
against overloads or overheating.
Dismantles, repairs, and reassembles units such as pumps,
impellers, compressors, chillers, receivers, and evaporators.
Tests operation of thermostats using meters and test lamps.
Tests efficiency of systems by using thermometers to make
adjustments to thermostatic controls and blowers.
Overhauls valves by adjusting or replacing gaskets, springs,
floats, diaphragms, valve fittings, seals, and couplings to make
complex repairs to various units of the system.
Determines the location and kind of faulty equipment and
types of supplies and repairs needed to repair different systems.
Repairs systems which use a variety of methods of air
conditioning/refrigeration such as mechanical compression or
vapor compression.
Installs refrigeration equipment according to blueprints and
specifications.
Cleans condenser coils and evaporator plates.
Checks air flow and replaces air filters if necessary.
Starts system, observes operation, reads gauges and
instruments, and adjusts mechanisms such as valves, controls,
and pumps to control level of fluid, pressure, and temperature
in system to ensure that the entire system is operating properly.
Checks electrical connections for tightness and condition of
wiring.
Will be required to learn to utilize various types of electronic
and/or manual recording and computerized information systems
used by the agency, office, or related units.
REQUIREMENTS:
EXPERIENCE:
Three (3) years of experience in work involving a variety of
tasks in the maintenance and repair of refrigeration equipment
used in refrigerating plants and/or for conditioning air and
cooling water in buildings.
LICENSE:/CERTIFICATION
Appointees will be required to possess a driver's license
valid in New Jersey only if the operation of a vehicle, rather
than employee mobility, is necessary to perform the essential
duties of the position.
Appointees will be required to possess a valid Air
Conditioning and Refrigeration Technician Certification of the
appropriate level, commensurate with the type of equipment
serviced, issued under the authority of the Federal Environmental
Protection Agency.
KNOWLEDGE AND ABILITIES:
Knowledge of principles and theories of refrigeration
cycles and temperature measurement.
Knowledge of the construction and operation of a variety of
refrigeration units and systems.
Knowledge of electric wire diagrams and schematics.
Knowledge of the safety practices and precautions used
in the repair and maintenance of air conditioning and
refrigeration equipment.
Knowledge of the use and care of tools used to prepare
air conditioning and refrigeration equipment.
Knowledge of the refrigeration cycle of a variety of
commercial type systems to locate and check elements which
control low side and high side pressure.
Knowledge of principles and theories of air
conditioning and refrigeration.
Ability to check temperature of cooling units and liquid and
suction lines.
Ability to check temperatures of liquid and suction
lines.
Ability to check the running time of various
mechanisms.
Ability to perform visual and audible checks of equipment
components for leaks.
Ability to dismantle and reassemble units such as
pumps, impellers, compressors, chillers, receivers, and
evaporators.
Ability to perform more complex repairs such as
installing and fitting crank shafts, piston rings, bearings, and
bushings.
Ability to overhaul valves by replacing/adjusting gaskets,
overhauling springs, floats, diaphragms, valve fittings, seals
and couplings, and aligning motors and fly wheel drives.
Ability to carry and lift parts and equipment weighing
50 pounds.
Ability to use hoists, pulleys, and so forth when
removing units such as large compressors, condensers, and
chillers.
Ability to work from ladders, scaffolding, or
platforms.
Ability to calculate air flow and pressure temperature
characteristics for different systems to locate and repair faulty
equipment.
Ability to service power sources to insulate exposed
wire and to make splices.
Ability to clean and lubricate moving parts.
Ability to replace major portions of units such as compressors,
condensers, expansion valves, thermostats, coils, and drive
assemblies.
Ability to learn to utilize various types of electronic
and/or manual recording and information systems used by the
agency, office, or related units.
Abilitd units.
Ability to read, write, speak, understand, or communicate in
English sufficiently to perform the duties of this position.
American Sign Language or Braille may also be considered as
acceptable forms of communication.
Persons with mental or physical disabilities are eligible as
long as they can perform the essential functions of the job after
reasonable accommodation is made to their known limitations. If
the accommodation cannot be made because it would cause the
employer undue hardship, such persons may not be eligible.
This job specification is applicable to the following title code: | | Job
Spec
Code | Variant | State,
Local or
Common | Class of
Service | Work
Week | State
Class
Code | Local
Class
Code | Salary
Range | Note | | 03047@ | | L | C | | N/A | 15 | | - |
This job specification is for local government use only.
Salary range is only applicable to state government.
Local salaries are established by individual local jurisdictions.
1/06/1997 |
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