IMR 4140 - Leaks & Repairs

Clock Hours: 25

Delivery Mode
on-ground

Course Description:
Students learn the various leak detection methods HVAC/R. Students will be able to identify different leak detectors and describe their capabilities for specific applications. Students will perform triple evacuation to ensure clean refrigeration systems and determine leak rate in a vacuum with a micron gauge. Students will be able to Pressure test refrigeration systems and demonstrate ability to leak detect under pressurized conditions. Students will discuss the special considerations of safety with repairing leaks in HVAC/R systems.

Student Learning Outcomes:
Students will attain the necessary skills to be able to:

Describe the requirements for a reliable and efficient system
Describe a standing pressure leak test
Describe basic leak detection methods
Describe various tips for proper leak detection
Discuss the need for leak repair
Describe the purpose of system evacuation
Explain the theory of evacuation
Describe methods for measuring vacuum levels
Explain the need for recovery prior to evacuation
Describe the basic vacuum pump
Describe a deep vacuum
Explain multiple evacuation
Describe using a vacuum for leak detection
Explain removing moisture through evacuation
Describe general evaluation procedures
Discuss special considerations for systems with Schrader valves
Discuss gauge hoses and vacuums
Discuss special considerations given to system valves
Describe the use of dry nitrogen
Describe procedures for cleaning a dirty system
Perform a standing pressure test on a vessel using dry nitrogen
Perform a deep vacuum test using a pump and electronic vacuum gauge
Perform a triple evacuation on a typical refrigeration system
Describe safety precautions one should take during evacuation and charging