An independent visual study guide, written in American trade English, for the worker who has to pass the EPA Section 608 exam and wants to understand the equipment they touch every day. Eight units take you from how the refrigeration cycle actually moves heat, through psig and psia, superheat and subcooling, the refrigerant families and their safety classes, into what the rule requires: the venting prohibition, the sales restriction, recover–recycle–reclaim, evacuation levels appliance by appliance, recovery cylinders and the 80 percent rule, the leak rule and the records, plus what Core and each Type cover. It closes with the end of R-22, the AIM Act phasedown, A2L on the job, safety, and a practice set for every exam section. Drawings carry the explanation: equipment, gauges, cylinders and real work situations, never faces. Each page says what the rule requires and what you will see on the job. This book is not the exam and does not grant certification: only EPA-approved certifying organizations issue the card, under 40 CFR Part 82 Subpart F, after their own exam. Not affiliated with EPA, OSHA, AHRI, ASHRAE or any certifying organization or manufacturer. Motor vehicle air conditioning (Section 609) is not covered, and state or county licensing is a separate matter that governs.
