Free sheet · print this
The 608 fact sheet
Every number below is drawn from 40 CFR Part 82 Subpart F as published.
The exam
| Structure | 25 Core + 25 per type; Universal 100 |
| Passing | 70% closed-book; 84% mail-in Type I |
| Core covers | Environmental impact of CFCs, HCFCs and substitutes; Laws and regulations; Changing industry outlook |
| Type sections cover | Leak detection, Recovery techniques, Safety, Shipping, Disposal |
| Expiration | The regulation sets no expiration or renewal requirement for technician certification. |
The four certifications
| Type | Covers |
|---|---|
| Type I | Small appliances: factory-sealed units holding 5 pounds of refrigerant or less |
| Type II | Medium-, high- and very high-pressure appliances, the residential and commercial split-system world |
| Type III | Low-pressure appliances, the chiller plant world |
| Universal | All three types |
The numbers the exam asks for
| Rule | Figure |
|---|---|
| Leak rate, commercial refrigeration (50 lb+) | 20% |
| Leak rate, industrial process refrigeration | 30% |
| Leak rate, comfort cooling and other 50 lb+ | 10% |
| Chronic-leak report to EPA | 125% of full charge in a calendar year |
| Purge exclusion, verified destruction | 98%+ |
| Small-appliance recovery, pre-11/15/1993 equipment | 80% |
| Later equipment, compressor running / not running | 90% / 80% |
| Small-appliance evacuation alternative | 4 in Hg vacuum |
| MVAC disposal | 102 mm Hg vacuum |
| Record retention | 3 years minimum |
| Servicing records required at | 50 lb or more |
| Small appliance definition | 5 lb or less, factory sealed |