Week #4

WEEK #4 TOPICS

Review ⁄ Quiz

EPA 608 Core Test A-1. This test covers pages 1-12.

EPA Refrigerant Certification Exam study guide: 608 Type I (pgs 13-15) - Saturday

Administration ⁄ Announcements

Simulated HVAC Service Calls

Service Team #1: Complete an abbreviated furnace inspection and write up an invoice. The inspection includes checking the filter, overall amp draw, inducer blower amp draw, and temperature rise. Compare the measured temperature rise and amp draws to those given by the manufacturer. Remove and clean the flame sensor (see instructor first).
Service team #2: (S. Bryant's customer's machine) Remove the non-working refrigerator's overload and relay. Test the overload. Replace the overload and relay with a 3-n-1 kit. See the instructor before turning on the power to test the unit. Reassemble the unit and write up an invoice.

Service Team #1: Diagnose the problem with a chest freezer and repair it if possible.
Service Team #2: Complete an abbreviated furnace inspection and write up an invoice. The inspection includes checking the filter, overall amp draw, inducer blower amp draw, and temperature rise. Compare the measured temperature rise and amp draws to those given by the manufacturer. Remove and clean the flame sensor (see instructor first). Check the capacitor. Check HSI ohms (see instructor first).

Videos

Refrigeration gauge set

Lectures

EPA Refrigerant Certification Exam study guide: 608 Type I (pgs 13-15)

Principles of electricity (textbook pgs. 200-205)

Tools

Multimeters (texbook pgs 61, 306-311), small screwdriver, light, nut drivers

Analog manifold gauges (pg 138-139)

PT (pressure temperature) charts (116)

Labs

Checking capacitors

Attaching and removing refrigeration gauges

Using a PT chart to determine the refrigerant within a recovery cylinder

Combustion analysis demonstration