Refrigeration system - Study guides, Class notes & Summaries

Section _____ , National Recycling and Emissions Reduction Program, of the Clean Air Act of 1990 requires management of refrigerants and refrigeration systems to maximize recovery and recycling of ozone-depleting substances during the servicing and disposal of air conditioning and refrigeration equip-ment. - Answer-608 What does EPA stand for? - Answer-Environmental Protection Agency The EPA is responsible for establishing and enforcing Section 608, which was created for the protection of ...

Z-51 REFRIGERATION TEST With Correct Solutions 2024 Update Efficiency of the refrigerant cycle is affected by the operations of the condenser. Of the following, a more efficient centrifugal compressor operation results from: - Answer -Lowering the condensing pressure The heat removed from the refrigerant in a condenser is: - Answer -Sensible and latent heat The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You have been assigned to withdr...

Why must you avoid running a refrigeration system below 14 kPa when pumping down - Answer-A slightly positive system pressure is required to prevent air infiltration This safety control device used on a centrifugal compressors allows the motor to be started unloading - Answer-Vane closed switch What is the purpose of the chilled water flow switch - Answer-Protects the chiller from freezing due to lack of waterflow Where can refrigeration system log sheets be obtained from - Answer-1. Re...

What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? - Correct answer-November 14, 1994 Section 608 of the Federal Clean Air Act requires technicians to what? - Correct answer-Recover all refrigerants. The objective of the Clean Air Act is to protect what? - Correct answer-The earth's stratosphere. HFC's - Correct answer-HydroFlouroCarbon's CFC's - Correct answer-ChloroFluoroCarbon's ODP - Correct answer-Ozone Depletion Potential Which in...

NATE AC Service Certification Questions And Answers 2023 Verified Tests A system is supplied from the factory with charge of 5 pounds 10 ounces for a 15 foot line set. The line set is 25 feet long. The manufacturer's instruction sheet specifies 0.6 ounces of refrigeration to be added for each added foot of refrigerant line set length. What is the total refrigerant charge for the system? A. 6 ounces B. 5 pounds C. 5 pounds 10 ounces D. 6 pounds D. 6 pounds 15ft - 25ft = 10ft x .6 = 6 o...

ODP test Questions and Answers 2023 Chlorofluorocarbon (CFC) refrigerants consist of: Chlorine, Fluorine, Carbon What causes a CFC molecule to break down once it reaches the upper atmosphere? Ultraviolet light The Ozone layer: Reduces ultraviolet radiation. Hydrochlorofluorocarbon (HCFC) refrigerants consists of: Hydrogen, Chlorine, Fluorine, Carbon. Which of the following refrigerants causes the least amount of damage to the ozone layer? R-134a Are there...

Refrigeration technicians who violate the Clean Air Act can: - Lose their EPA certification, be fined, be required to appear in Federal court. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - recovery and recycling. Refrigerant that is recovered can be returned to: - the same system or other systems owned by the same person without restriction.

Positive pressure testing of a new refrigeration system may be done: Using litmus paper. By filling the system with oxygen. By filling the system with ammonia. By filling the system with an inert gas. By filling the system with softened water. - Answer-by filling the system with an inert gas A sulphur candle is used to test for: Freon leaks Ammonia leaks Propane Vacuum seal CFC leaks - Answer-ammonia leaks Which of the following is NOT a problem asso...

rn ,thermal burn ,respiratory burn Ammonia causes cancer - answerFalse If ammonia, in liquid form, makes its way in to the eyes There is usually damage that is non- reversible resulting in blindness - answerTrue Most MSDS sheets require a rinse flush to the body eyes for a minimum of how many minutes when dealing with the chemical Donya ammonia. - answer15 minutes , 30 minutes Do you ever want to put liquid water on liquid ammonia when the refrigerant is that atmospheric conditions - answ...

Commercial Refrigeration Certification Questions and Answers 100% VerifiedCommercial Refrigeration Certification Questions and Answers 100% VerifiedCommercial Refrigeration Certification Questions and Answers 100% VerifiedCommercial Refrigeration Certification Questions and Answers 100% Verified "Pump down" means to capture system refrigerant in the: A. recovery cylinder. B. compressor. C. condenser and/or liquid receiver. D. suction accumulator. - ANSWER - C. condenser and/or liquid rece...