Type II: High-Pressure Systems


Description:

This module is designed to help technicians understand the information necessary for obtaining Type II certification. Type II classification certifies a technician for refrigerant service of high-pressure and very high-pressure appliances. He can then also purchase refrigerants. Many of the questions for the Type II exam cover information that is covered in the "Core" module. But some of the information covered in this module is unique to Type II.

Learning Outcomes:

  1. Identify signs of a leak in high-pressure and very high-pressure systems.
  2. Describe the repair requirements for high-pressure and very high-pressure systems.
  3. Describe the techniques for recovering refrigerants in high-pressure and very high-pressure systems.
  4. Describe the EPA regulations governing recovery equipment and vacuum standards for high-pressure and very high-pressure systems.
    5. Describe the components of a high-pressure appliance. Explain the flow of refrigerant through high-pressure and very high-pressure systems.
  5. Explain the role of the different components in high-pressure and very high-pressure systems.
  6. Describe the general safety practices when working with refrigeration systems.
  7. Describe the safety practices when working with high-pressure systems.

Topic 1: Leak Detection

  • Topic Introduction and Objectives
  • Definitions
  • Leak Detection in High-Pressure/Very High-Pressure Systems
  • Repair Requirements
  • Check-Point Question: Leak Detection
  • Topic Summary

Topic 2: Refrigerant Recovery

  • Topic Introduction and Objectives
  • Maintenance of Recovery Machines
  • Removing Refrigerant in the Liquid Phase
  • Recovering Vapor from the Appliance
  • Recovery Requirements
  • Check-Point Question: Refrigerant Recovery
  • Topic Summary

Topic 3: Refrigeration Cycle

  • Topic Introduction and Objectives
  • Flow of Refrigerant Through the Appliance
  • Vacuum Pump
  • Check-Point Question: Refrigeration Cycle
  • Check-Point Question: Refrigeration Cycle
  • Topic Summary

Topic 4: Safety

  • Topic Introduction and Objectives
  • General Safety Practices
  • Safety Reminders for Large Appliances
  • Check-Point Question: Safety
  • Topic Summary
  • Assessment