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C-21D Refrigeration and Air Conditioning Maintenance Contractor (2018-03-29)
The repair and replacement of any parts of existing units or systems of air-conditioning and refrigeration, including the compressors, motors, relays, coils, heat exchangers and other appurtenances and equipment, but not the replacement of complete condenser assemblies on remote systems, air handlers or any work that may alter the design of an existing system.
70% Minimum Passing Score
Closed Book These books are for pre-test study only and are not available for use during the test.
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.
Publication Year: 2020
All Federal Construction Regulations (29 CFR 1926) are included in this “perfect bound” book in an easy-to-read, two-color layout.
All 29 CFR 1926 regulations for construction industry are included along with the following items:
29 CFR 1903 regulations covering inspections, citations, and penalties
29 CFR 1904 regulations covering recording and reporting occupational injuries and illnesses
OSHA keyword dictionary
Easy to find OSHA interpretations
Uniform Mechanical Code 2012 provides complete requirements for the installation and maintenance of heating, ventilating, cooling and refrigeration systems, while at the same time allowing latitude for innovations and new technologies.
Modern Refrigeration and Air Conditioning is the HVACR standard for a new generation of learner. It correlates to HVAC Excellence and PAHRA accreditation requirements to ensure complete coverage that prepares students for career success. This edition has an improved instructional design, improved assessments, enhanced content on fundamentals, such as electrical theory and troubleshooting, and new digital assets that help students master knowledge, hands-on applications, and diagnostic skills. The revision also helps prepare students for employment and careers with new lab activities and features. Prepare your students for careers with new learning materials based upon the original HVACR industry standard.
Follow-the-Heat™ Animations provide 63 short animations that introduce foundational concepts using simple, easily understood graphics and narrations.
Troubleshooting Activities create an interactive experience designed to develop and promote troubleshooting techniques and logical diagnostic skills.
New chapter on Electrical Troubleshooting, and expanded electrical coverage in the text and lab manual provide excellent coverage of essential information.
Soft Skills for HVACR features emphasize the importance of workplace skills.
Service Call Troubleshooting features present on-the-job service call situations.
Full-color Lab Manual includes 35 new lab activities – including activities focusing on basic electrical skills and sheet metal construction.