David Montoy
Westminster,CA
Summary
Skilled Refrigeration Mechanic with hardworking mentality and detailed oriented. Competent in diagnosing and correcting refrigeration failures on different kinds of systems. Always striving to increase my mechanical, electrical, and diagnosing skills as well as knowledge.
Overview
7
7
years of professional experience
Work History
Refrigeration Service Technician
Scientific Refrigeration
09.2021 - Current
- Perform predictive, preventive and corrective maintenance on diverse systems such as refrigerators, freezers, ultra-low freezers, temp/humidity chambers, and incubators.
- Perform diagnostics and repairs on refrigerators, freezers, ultra-low freezers and chambers from many different manufacturers and at different locations such as: Hospitals, research facilities, clinical labs, prisons, and defense contractors.
- Complete full rebuilds on ultra-low freezers, including back flushes, and deep vacuums.
- Locate and repaired refrigerant leaks on individual units and larger systems.
- Replace compressors, starting components, condenser and evaporator fan motors, condenser and evaporator coils, as well as displays and electrical boards.
- Calibrate refrigerators/freezers when customer requests to do so.
- Transported refrigeration units and trailers to customer locations after they were brought to the shop for repair (some systems are not recommended to be repaired in the field).
- Read and interpreted electrical schematics to understand different models.
Refrigeration Technician
Cascade Thermal Solutions
09.2019 - 06.2021
- Diagnosing and repairing different cascade systems (high stage and low stage compressors, charging low stage compressors with R508b, changing out heat exchangers).
- Diagnosing and repairing different environmental chambers (replacing solenoids valves and coils that help to maintain a constant temperature and humidity. Also hot gas regulating valves, dozens of cap-tubes, and both hermetic and semi-hermetic compressors).
- Wrote repair estimates and advised customers on what was needed for the repair.
- Performed preventative maintenances and calibrations with a fluke 725 on all environmental chambers, as well as -80C, -20C, and +4C refrigerators and freezers.
- Replaced contactors, relays, and circuit boards on refrigerators and freezers from different manufactures.
- Serviced units in many large pharmaceutical companies (Johnson & Johnson, Milapore Sigma, and Allergan)
- Performed triple evacuations on ultra low temp units, bring them down to 50 microns.
Refrigeration and Air Conditioning Technician
Clima-tech
09.2018 - 09.2019
- Diagnosed and repaired refrigeration and air conditioning units (single systems, walk in coolers and freezers, Icee machines, Carrier package units, and self-contains)
- Replaced compressors, TXV, evaporator, and condenser coils.
- Performed refrigerant leak checks when systems were found to be either low on gas, or flat.
- Fixed multiple water leaks, and repaired PVC piping.
- Changed out high, low, or dual pressure controls. As well as T-stats.
- Replaced control boards on Beacon systems (Located on the Master evaporator coil).
- Serviced multiple restaurants and convenience stores (7-11, Wingstops, Mimi's Cafe, and Circle K).
- Followed repair process (Recovered refrigerant, repaired leak or replaced compressor, pressurized with nitrogen in order to verify there was no leaks, pulled vacuum, and charged with refrigerant).
- General Preventative maintenance (washing condenser coils on RTUs and package units)
Refrigeration and Air Conditioning Technician
Climatrol Refrigeration & Air Conditioning Ltd.co
01.2018 - 09.2018
- Diagnosing Refrigeration and HVAC units (Restaurant work)
- Assisting contractor in building walk-in coolers (setting up condensing units, hanging evaporator coils, running and brazing cooper lines as well as connections.
- Replacing HVAC blower motors and general diagnosing.
- Ran conduit and fishing electrical wire.
- Washing condenser coils during summer time.
Refrigeration Apprentice
PMC Southwest
02.2017 - 01.2018
- Performed general maintenance (Washed and cleaned evaporator coils and cases in supermarkets. Example: Ralphs, Food4Less, Sprouts, and Wholefoods).
- Late night deicing of evaporator coils and cleaning of cases.
- Leak checked entire supermarkets, located and fixed leaks.
- Learned how to isolate and pump down different cases (dairy case, beer case, walk in coolers and freezers in order to repair leaks).
- Replaced evaporator fan motors in many walk ins.
- Assisted senior technicians in replacing large semi-hermetic compressors during late night hours.
- Charged systems with 200-300 lbs or R404a when they were low on charge.
- Picked up and delivered parts to senior technicians (compressors, EPRs, and TXVs)
- On-call and opening up different supply houses to get parts for the senior techs. (RSD and United Refrigeration)
Education
EPA Certification - Heating, Ventilation, Air-Conditioning, And Refrigeration Technology
Brownson Technical School
Anaheim, CA06.2014
High School Diploma -
Magnolia High School
Anaheim, CA06.2006
Skills
- Mechanical/electrical aptitude
- Safety awareness
- Preventive Maintenance (Cleaning condensers, checking compressor voltage, amperage, verifying capacitors are in good condition, as well as electrical connections and refrigerant levels)
- Soldering and brazing (with 15% sil-foss, 45% silver solder & flux)
- Use of electrical meter to check for 115, 208-230, 460 volts) And Fluke thermometer to make calibrations and temperature checks
- Troubleshooting/Repairing refrigerator, freezers, ultra-low freezers/Cascade systems and chambers
- Knowledge in how to properly replace compressors, fan motors, evaporator and condenser coil
- Recovering, vacuum and charging systems with different types of refrigerant (R134a, R404a, R410a, R508b, ethane and propane)
- Recordkeeping (Proficient in writing out service reports once repair is complete)
Languages
Spanish
Native or Bilingual
Timeline
Refrigeration Service Technician
Scientific Refrigeration
09.2021 - Current
Refrigeration Technician
Cascade Thermal Solutions
09.2019 - 06.2021
Refrigeration and Air Conditioning Technician
Clima-tech
09.2018 - 09.2019
Refrigeration and Air Conditioning Technician
Climatrol Refrigeration & Air Conditioning Ltd.co
01.2018 - 09.2018
Refrigeration Apprentice
PMC Southwest
02.2017 - 01.2018
EPA Certification - Heating, Ventilation, Air-Conditioning, And Refrigeration Technology
Brownson Technical School
High School Diploma -
Magnolia High School