As an experienced Air Conditioning and Refrigeration Equipment Mechanic with a 5-year track record, I excel in maintaining, troubleshooting, and repairing refrigeration and air conditioning systems. My ability to adapt to diverse work environments, confined spaces, and handle variable shift schedules, positions me as a versatile and reliable team member for the chassis/reefer position.
Overview
6
6
years of professional experience
1
1
Certification
Work History
air conditioning and refrigeration mechanic
Pearl harbor naval shipyard
Honolulu, HI
07.2019 - Current
Subject matter expert for (Prime line) Carrier Refrigeration containers and Carrier Air cooled chillers
Maintained, Diagnosed, and Repaired 34 Carrier refrigeration containers and 8 carrier air cooled chillers with a total value of approximately 4 million dollars
Knowledge of the refrigeration cycle and can interpret wiring schematics/diagrams to properly troubleshoot and perform refrigeration and electrical work
Proficient in using various HVAC tools and equipment, ensuring all repairs and maintenance meet industry standards
Created and implemented a maintenance plan from ground up to help prevent future failure of equipment
CARRIER REFRIGERATION CONTAINER WORK PERFORMED
(MODEL NUMBER: 69NT40-561-250) Conduct daily and monthly routine maintenance checks and submit work orders if any abnormalities or repairs need to be done while communicating effectively with shop and ship personnel
Perform PRE-TRIP diagnosis on reefer units before and after submarine/surface craft ship availability ends
Maintain, Troubleshoot, Replace/Repair parts include
Scroll Compressor, Condenser, Evaporator, Condenser fan, Evaporator fans, Sensors, Transducers, Contactors, Micro link 3 controller, Display/controls, Filter drier, Receiver, Service valves, Transformer, Coils, EEV, DUV and Refrigeration circuit
Daily maintenance checks Ensure temperature is withing range of setpoint
No alarms are present
Correct sensor is illuminated on reefer unit setting (Return sensor for freeze mode and Supply Sensor for Chill)
Refrigerant level is within range
Inspect Condenser coil for any dirt, debris, and physical abnormalities
Make sure all identifying stickers, tags, model/serial plate, caution, and procedure signs are in the proper location on unit
Visually inspect around container for any damage and note if any abnormal sounds from the unit
Monthly maintenance checks Rear end of unit Examine the evaporator for any dirt, debris, and physical abnormalities and wash/rinse with low pressure water
Examine defrost heaters and heaters bracket for any damage
Examine evaporator fan motors for excessive end play and any bearing drag
Examine evaporator fan blades for and cracks, wear, and damage etc
Examine all sensor positions and ensure it is properly secured to the unit sensors include (DTS, HTT, Return air, Humidity, Evaporator temp 1 and 2, Temperature recorder) sensors
Examine evaporator drain, drain funnel, and blow down with N2 and ensure proper flow of water
Examine EEV for corrosion and proper position of the coil
Inspect T channels for cleanliness and no debris, food or objects are obstructing the channel
Pressure wash and Steam clean inside reefer unit
Front end of unit Examine unit for any oil residue and leak check the unit
Make sure all identifying stickers, tags, model/serial plate, caution, and procedure signs are in the proper location on unit
Inspect/examine all valves, coils, sight glass, sensors/transducers for any physical damage, leaks, or corrosion
Sensors/transducers: CPDS (Compressor Discharge Temperature sensor), DPT (Discharge Pressure transducer), SPT (suction pressure transducer), EPT (Evaporator pressure transducer), HPS (High pressure switch), STS/SRS (supply temperature sensor and supply recorder sensor)
Valves/coils/Sight glass: Suction and Discharge service valves and king valve, DUV (digital unloader valve), Sight glass on receiver
Electrical control box section
Inspect electrical control box and electrical connections for damage and wear
Examine contactors (CH) Compressor, (PA) Phase A, (PB) Phase B, (HR) Heater, (CF) Condenser Fan, (EF) Evaporator Fan High Speed, (ES Evaporator Fan Low Speed for any damage, burns, discoloration, severe pitting etc
Perform Megger test on Evaporator fans, Condenser fan, Compressor and Defrost heaters
Tighten all electrical connections
Inspect Controller and tighten all electrical connections
Condenser Section
Examine the Condenser for any dirt, debris, and physical abnormalities and wash/rinse with low pressure water
Examine Condenser fan motor for bearing drag, corrosion, overheating, and physical damage
Inspect main power plug
Examine for any cracks, damage, and wear to insulation
Check to make sure its properly mounted to the unit
Operational/Certification test
Ensure withing range incoming Voltage is supplied to the unit
Check for proper operation on unit start up
Check container ID and verify date and time is set correct
Check for proper software is loaded to the Micro link 3 controller
Checking for proper rotation of condenser and evaporator fans
Perform PRE-TRIP (AUTO 2 test)
Inspect moisture/refrigerant level indicator and make sure its within range
Amperage checks on compressor
Conduct operational test in freeze and chill setpoints and log readings on monthly maintenance test/certification sheet
CARRIER AIR COOLED CHILLER WORK PERFORMED
Performed troubleshooting, maintenance, and repairs on Aquasnap 30RB 170 TON and 210 TON Air cooled chillers to support Submarine availability
Repair, replace and troubleshoot any defective parts include Thermistors, flow switch/flow sensor, EXV, EXV boards, main base boards, SPM boards, RRB board, Fan aux board, compressors, contactors, condenser fan motors, filter driers, rebuilding CWP, rebuilding contactors, CCH heaters, display boards, Circuit breakers, fuses, transformers, evaporator barrel and pressure transducers
Daily maintenance checks Log entering and leaving chill water temperatures, ambient temperature, and capacity of chiller
Log oil level on each circuit compressors
Check refrigerant pressures and temperatures are within range
Check chill water pressure and make sure its within range
Check operation of Chill water pump Check for proper rotation/operation of condenser fans
Inspect Condenser coil for any debris/damage
Check operation of compressors crank case heaters
Inspect Moisture indicator/sight glass
Log any Alerts/alarms and submit work order to correct/repair the issue and notify shop/ship personnel
Physically inspect around and unit itself for any abnormality and report to shop management and ship personnel.
refrigeration technician
sears
05.2018 - 07.2019
Works independently to troubleshoot/repair domestic refrigerators using company service van and company issued phone
Repair/replace defective parts including Compressors, Condensers, 3-way valves, Thermostats/Cold control, Ice makers, Electronic Control boards, Sensors, Bimetals/defrost heaters, Micro switches, Dispenser motors, Water tubing, Gaskets, Condenser and Evaporator fans, Light switches, Water valves, and Fresh food and Freezer doors
Use of applicable tools: tools include Manifold gauge, VOM, Vacuum pump, Acetylene tank, Refrigerant tank and scale, Water pressure gauge, electronic leak detector, Wire stripper, Screwdrivers, Nutdrivers, Wrenches, Pliers, Pipe Wrench, Impact drill, Socket and Ratchet, Allen wrenches
Worked with R-134a Refrigerant and Vacuum pumps to successfully pressure test and charge units to proper amount
Performed routine maintenance checks on refrigerators to ensure proper and efficient working conditions of refrigerators
Worked independently to troubleshoot water heaters (electric and gas)
Replaced defective burner assembly, pilot light, pilot assembly, gas valves, and pressure relief valves (electric and gas) on water heaters
Efficiently worked with the customer and listing to their demands and offer the best solutions on repair/maintenance on their appliances.
Education
ASSOCIATE degree in refrigeration and air conditioning (RAC) -
honolulu community college
01.2018
Skills
Testing and Troubleshooting
Equipment Configuration
Emergency Repairs
Employee Training
Piping and Brazing
Repairs and Troubleshooting
System Testing
Work Crew Monitoring
HVAC and Refrigeration Systems
Preventive Maintenance
Apprentice Training
Testing Procedures
Performing Maintenance
Certification
EPA 608 (Universal Certification)
Bendix Air brake Certification
TWIC card
Hawaii driver’s license
Carrier Refrigeration troubleshooting course.
Carrier Electrical troubleshooting course.
Universal R-410A Safety and training
AHERA Asbestos abatement worker (Type 3)
Brazing certification on shipboard systems
Work Cell
808-260-6725
Personal Cell
808-258-0425
Timeline
air conditioning and refrigeration mechanic
Pearl harbor naval shipyard
07.2019 - Current
refrigeration technician
sears
05.2018 - 07.2019
ASSOCIATE degree in refrigeration and air conditioning (RAC) -
honolulu community college
EPA 608 (Universal Certification)
Bendix Air brake Certification
TWIC card
Hawaii driver’s license
Carrier Refrigeration troubleshooting course.
Carrier Electrical troubleshooting course.
Universal R-410A Safety and training
AHERA Asbestos abatement worker (Type 3)
Brazing certification on shipboard systems
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