Group 3, Week #5 Topics
Fire-N-Ice has produced an Android app that lists the LED diagnostic codes for many furnaces. Search for "Furnace Codes and Diagnostics" in the Play Store.
The missing ESCO EPA study guide pages were distributed.
In Class Reviews and Lectures
Tuesday 6⁄5⁄2018 review questions
1) In a paragraph or two describe the primary issue that lead to the development of EPA Section 608
2) How does brazing differ from soldering? State at least three differences. See textbook pages 154 - 160.
Domestic Type I refrigeration systems (textbook pages 598, 642-647)
Main A⁄C power and transformers (textbook pages 284-286)
Introduction to manifold gauges (Esco study guide page iii, textbook pages 214-216)
ESCO 608 study guide: CORE (pages 1-5). Click here for the study guide
6⁄6⁄2018 review questions:
1. The release of CFCs and HCFCs affects the:
troposphere
oceans
stratosphere
production of refrigerants
2. EPA regulations require that refrigerant hoses be equipped with _____________
6⁄7⁄2018 review question and answer:
How many atoms of chlorine does it take to destroy 1,000,000 ozone molecules?
Answer: 10. If one atom can destroy 100,000 then 10 can destroy 1,000,000 (100,000 x 10).
Introduction to schematics - schematic symbols (textbook page 279, air handler and condenser schematics in the Additional Resources section )
Practice Exams
Lab Work
1) MVAC to HVAC system components comparison (study figures on pages 836-837, 839 & 841)
2) Attaching analog gauges, checking pressures, and charging an MVAC system.
I checked the temp during the drive home. RPMs were about 1700. Note the time and the results ....
3) Wiring a furnace switch to the control board.
4) Combination switch wiring diagram example:
5) Refrigerators and mini fridges 101 (textbook pages 598, 642-647, condensor brush)
6) Wiring a transformer to the control board (see textbook pages 284-286 & Additional Resources section)
7) Introduction to schematics - schematic symbols (textbook page 279, air handler and condenser schematics in the Additional Resources section )
8) Refrigeration system puzzle
9) Domestic Type I refrigeration maintenance (textbook pages 598, 642-647, SB's maintenance checklist)
dehumidifiers 101