G3 Wk #9

Group 3, Week #9 Topics

Planned In Class Reviews, Lectures, and Exams

Lecture: ESCO EPA Section 608 Type III (study guide pages 11-12)

Lecture: Charging A⁄C appliances using the superheat and subcool methods (see textbook pages 236-238)

ESCO EPA Section 608 Type III practice test (study guide pages 11-12)

Additional Resources #19 and the question contained within it.

Type III Chiller basics. Video

Wet bulb and psychrometers (textbook pages 693 & 696)

Aprilaire humidity chart

Complete the essay: "Explain pressure and temperature as they relate to refrigeration systems"

ESCO EPA certification testing - With one exception, all students are UNIVERSALLY CERTIFIED!!

Lab Work

Multi meter practice: Taking voltage, ohm⁄continuity & amperage measurements.

Inspecting and maintaining furnaces - Level 1

Introduction to digital pressure gauges (Testo 550) and psychrometer

Install Pressure ⁄ Temperature Chart and superheat and subcool calculation apps and for phones or tablets. See the Additional Resources section.

Using superheat, subcool and pressure ⁄ temperature calculation apps

Inspecting and maintaining Type II air conditioning systems

Inspecting and maintaining furnaces

Measuring and adjusting gas pressure ⁄ gas valves

Gas meters

Checking heat exchangers

Combusion analysis (textbook 1120+)

Announcements and Other Stuff It would be helpful if you reviewed the following before or after class