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Phase 5

Refrigerated Dryers

INTRODUCTION

Welcome to Phase 5. With the core fundamentals behind you, this self-paced phase is less about quantity and more about your ability to think through technical issues, apply sound judgment, and serve customers with confidence.

Refrigeration Fundamentals

BLOCK 01

Heat Transfer & System Fundamentals

01

Heat transfer, refrigeration fundamentals, superheat, and subcooling — building an understanding of system behavior and real-world performance.

BLOCK 02

Components and Control Devices

02

Refrigeration components, controls, and metering devices — you'll focus on understanding how systems regulate, protect, and respond in the field.

BLOCK 03

System Relationships and Field Application

03

Pressure-temperature relationships, PT charts, and system behavior — applying refrigeration knowledge to troubleshoot and evaluate real-world performance.

Refrigeration Service Application

BLOCK 04

Intro to Brazing and Soldering

04

Learn brazing and soldering fundaments, including flame control, capillary action, joint preparation, and nitrogen purgin.

BLOCK 05

Brazing and Soldering of Dissimilar Metals

05

Practice brazing dissimilar metals while learning proper technique, overheating prevention, and nitrogen purging.

06

BLOCK 06

Refrigerant

Explore refrigerant fundamentals including recovery, leak detection, vacuum systems, charging, and A2L safety.

Refrigeration Certification & Competency

BLOCK 07

EPA Certification

07

Prepare for EPA 608 certification by studying core concepts, completing practice exams, and earning credentials.

BLOCK 08

Brazing in Tight Spaces

08

Apply brazing and soldering skills in tight spaces while reinforcing safety, technique, and real-world service practices.

09

BLOCK 09

Refrigerated Dryers 

Phase Final Test

Complete a comprehensive hands-on assessment covering refrigerant handling, brazing, soldering, and system service.

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