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Block 6

Refrigeration Service Application

PHASE

BLOCK

PART

Absorb

Articulate

Master

BLOCK 06

Refrigerant

This Block introduces the tools, procedures, and safety practices required for proper refrigerant handling and system service. Download the Block Syllabus to help guide your progress.

Block 6 Syllabus

Absorb

RESOURCES:

LMS Refrigeration Courses
- ASOD5106: A2L Safety

Assigned Videos
- Refrigerant Fundamentals:
  - Refrigerant Types, Issues + Future (11 minutes): https://www.youtube.com/watch?v=J77a0keM2Yk
- Recovery Procedures:
  - Recovering Refrigerant (4 minutes): https://qrfy.io/r/qHHcZ2iEEC
- Manifold Gauges + Service Equipment:
  - Manifold Gages (4 minutes): https://qrfy.io/r/fNLKUDbcsF
  - Manifold Gage Sets Introduction (23 minutes): https://qrfy.io/r/Nn_rwX8A09
- Vacuum Procedures:
  - Vacuum Pumps: https://qrfy.io/r/eRvTkv37PC
  - Vacuum Pump vs. Recovery Machine: https://qrfy.io/r/v1lIaGNGn
- Compressor Service:
  - Adding Oil to Refrigerant Compressor: https://qrfy.io/r/c5_UWlpCIk
- Leak Detection & Pressure Testing:
  - Nitrogen Pressure Testing and Leak Detection: https://www.youtube.com/watch?v=JaSUDn2VU04
  - Leak Detection Procedures: https://qrfy.io/r/H4DzOYbS2a
- Charging Procedures:
  - Charging Refrigerant: https://qrfy.io/r/6GcAAS97JE

Tech Direct Articles
- Leak Testing an NVC Evaporator: Tech Tube 12894

Articulate

Refrigerant | Written Responses

Show how well you can process and apply the information you just learned. Responses should be thorough, thoughtful, and demonstrate a strong understanding of the topic at a deeper, more practical level. To submit your responses for Supervisor Review, press the Submit Response button after the final question.

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Explain the evolution of refrigerants from the early days to today. Discuss the reasons for the industry's transition between refrigerant types, including the move toward A2L refrigerants, and the safety and service considerations technicians must understand.

1

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Describe the factors that influence refrigerant recovery speed and efficiency. Under what conditions might you heat a recovery cylinder or cool it with water, and why?

2

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Explain how refrigerant temperature affects charging procedures. When might warming or cooling a refrigerant cylinder be appropriate, and what effect does it have on charging?

3

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Discuss the purpose of nitrogen pressure testing and leak detection. Explain why nitrogen is used, typical pressure ranges, and the factors that determine test duration.

4

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Compare the function of a recovery machine and a vacuum pump. Explain how each is used during refrigeration service procedures.

5

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Describe common situations where a recovery machine is required and the objectives of the recovery process.

6

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Describe when a vacuum pump should be used and explain its purpose during installation, repair, and service procedures.

7

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Explain the importance of refrigerant scales, accurate charging practices, and proper documentation of recovered and charged refrigerant quantities.

8

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Complete

To submit your responses for Supervisor Review,
press the Submit Response button.

Complete

Mastery

Master

Refrigerant

When you feel confident in this topic, click button to complete your Mastery. This is an Instructor-Led Skills Session — you'll need to schedule time with a Senior or Master Technician to complete this block.

Complete Mastery

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Return to Phase 5

Block 6

Refrigeration Service Application

BLOCK 06

Refrigerant

This Block introduces the tools, procedures, and safety practices required for proper refrigerant handling and system service. Download the Block Syllabus to help guide your progress.

Absorb

RESOURCES:

​

LMS Refrigeration Courses

ASOD5106: A2L Safety

​​​​

Articulate

Refrigerant | Written Responses

1

2

3

4

5

6

7

8

To submit your responses for Supervisor Review, press the Submit Response button.

Master

Refrigerant

When you feel confident in this topic, click button to complete your Mastery. This is an Instructor-Led Skills Session — you'll need to schedule time with a Senior or Master Technician to complete this block.

To submit your responses for Supervisor Review,
press the Submit Response button.