Sealed Systems Diagnostics & Repair

Includes R134a, R600, and Lokring (SAT/SUN)

R134a Systems (Saturday)

A two-day, comprehensive sealed systems school covering both R134a and R600 systems. The goal of our sealed systems repair training is to provide students with a more confident approach to diagnosing and performing sealed system repairs. Class time is from 8:00 AM until all topics are satisfactorily covered (4-5 PM). The class will cover the following:

  • Sealed system theory
  • Evacuating a system
  • Component access, testing, removal, and installation
  • Guided brazing practice
  • Real-world obstacles and issues to navigate
  • Flame direction and heat protection techniques
  • Weighing in charges
  • R134a vs R600a
  • Observing and discussing refrigerant pressures
  • Confirming the effectiveness of the repair

R600/Lokring (Sunday)

Day two of our sealed systems repair class features plenty of hands-on training with the Lokring system so techs can get comfortable with proper usage. Our instructor has developed the class curriculum based on training received at the Vulkan USA facility in Winter Haven, FL. Topics covered will include:

  • Principles and technology of R600
  • Safety & precautions when handling R600
  • Hands-on Evacuation & recharging of R600 system
  • Lokring Technology Training
  • Assembly & Training on proper Lokring Fitting Installation
  • Hands-on Lokring Tool usage in real work scenarios on our custom mockup

Service Mode Diagnostics


The purpose of this two-day class is to train technicians on how to properly utilize diagnostic capabilities on modern appliances to assist with troubleshooting and ensure accurate issue identification. Topics covered will include:

  • Troubleshooting components from the control board
  • Using diagnostic/service mode to isolate component failure and check for voltage/current flow
  • Using a multi-meter/ testing equipment properly and to its FULL potential
  • How to read schematics properly in order to test components
  • An introduction to GE’s “Smart HQ” diagnostics app
  • How to use diagnostic info to improve job selling

Students will receive classroom and hands-on training on a variety of appliance makes, models and types and will receive individualized instruction, allowing them to emerge from the training with a better understanding of diagnostics features and how they can help to improve selling and customer service skills and make for a more proficient technician.