C-21D Refrigeration and Air Conditioning Maintenance Contractor (2023-11-01)

The OSHA 29 CFR 1926 Construction Regulations book offers convenient access to vital safety guidance for both employers and employees, aiding in the prompt identification of potential hazards on any job site. Its user-friendly design features a two-color layout, simplifying navigation and comprehension of regulations. It encompasses all 1926 regulations, along with 1903 regulations on inspections, citations, and penalties, as well as 1904 regulations concerning record keeping and reporting of occupational injuries and illnesses. Additionally, select 1910 regulations relevant to construction industries are included. The book highlights regulation changes between releases and provides easy-to-access OSHA interpretations, aiding in clarity and reference. Essential documents such as OSHA Form 300 and the Cancer Policy are incorporated. In-Cite Referencing to applicable 1910 regulations is provided for further context. Lastly, the book outlines the Most Frequently Cited Standards preceding relevant Subparts, enhancing its utility as a comprehensive safety resource.

The book details a variety of topics and troubleshooting procedures, including the following: refrigerant pressures, states, and conditions, subcooling and superheat, compression systems, metering devices, system charge, diagnosing air conditioning systems, systematic troubleshooting, alternative refrigerants, refrigerant blends an oils, leak detection - evacuation and clean up procedures, ozone depletion and global warming. Troubleshooting and Servicing Modern Air Conditioning and Refrigeration Systems discusses the changes affecting the refrigeration and air conditioning industries with an emphasis on the phaseout of CFC and HCFC refrigerants. Detailed sections on the most current leak detection and evacuation methods are included, as well as a section on alternative refrigerants and retrofit guidelines. The book also includes refrigerant changeover guidelines for the following conversions: R-12 to R-134a; R-12 to R-401A; R-12 to R-401B; R-502 to R-402A/R-408A; and R-502 to R-404A/R-507.

The 2018 edition of the Uniform Plumbing Code (UPC^©) represents the most current approaches in the plumbing field.  It is the sixth edition developed under the ANSI Consensus process is designated as an American National Standards by the American National Standards Institute (ANSI). Contributions to the content of this code were made by every segment of the built industry, including such diverse interests as consumers, enforcing authorities, installers/maintainers, labor, manufacturers, research/standards/ testing laboratories, special experts and users.