Hfo is - Study guides, Class notes & Summaries

EPA 609 Technician Certification Questions and Answers | Latest Version | 2024/2025 | Already Passed What is the purpose of the EPA 609 Technician Certification? The EPA 609 certification allows technicians to service motor vehicle air conditioning (MVAC) systems and handle refrigerants in compliance with the Clean Air Act to prevent environmental harm. Why is it important for technicians to be certified before handling refrigerants in MVAC systems? Certification ensures that te...

The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is: - ANSWER Approved by some vehicle manufactures but not by others One effect of some refrigerant gases in the atmosphere is that they: - ANSWER Contribute to trapping heat Which item is not mentioned in the SAE J2099 Standard of refrigerant purity? - ANSWER Sludge When it has been determined that an A/C system has a low refrigerant charge, what should be done? - ANSWER Perform a leak test procedure

MACS Certification 2024 Exam Marking Scheme 100% Correct If the mechanic's gauges rise from a vacuum to pressure, what is required? - Answer- Additional recovery What is the only way to fully clear moisture from the A/C system? - Answer- Replacing the desiccant Pressure ______ the boiling point - Answer- Raises Vacuum _______ the boiling point - Answer- Lowers What should you do when replacing hoses? - Answer- Make sure you have the correct type/size of tubing What does GWP stand for?...

If the mechanic's gauges rise from a vacuum to pressure, what is required? Correct Answer Additional recovery What is the only way to fully clear moisture from the A/C system? Correct Answer Replacing the desiccant Pressure ______ the boiling point Correct Answer Raises Vacuum _______ the boiling point Correct Answer Lowers What should you do when replacing hoses? Correct Answer Make sure you have the correct type/size of tubing What does GWP stand for? Correct Answer Global Warm...

The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. - ANSWER Restricted to technicians who are EPA certified and refrigerant recovery A small Pliance is defined as a system that is - ANSWER Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. - ANSWER System dependent You m...

MACS Certification Questions And Answers 100% Correct If the mechanic's gauges rise from a vacuum to pressure, what is required? - Answer- Additional recovery What is the only way to fully clear moisture from the A/C system? - Answer- Replacing the desiccant Pressure ______ the boiling point - Answer- Raises Vacuum _______ the boiling point - Answer- Lowers What should you do when replacing hoses? - Answer- Make sure you have the correct type/size of tubing What does GWP stand for? - ...

If the mechanic's gauges rise from a vacuum to pressure, what is required? - ACCURATE ANSWERS Additional recovery What is the only way to fully clear moisture from the A/C system? - ACCURATE ANSWERS Replacing the desiccant Pressure ______ the boiling point - ACCURATE ANSWERS Raises Vacuum _______ the boiling point - ACCURATE ANSWERS Lowers What should you do when replacing hoses? - ACCURATE ANSWERS Make sure you have the correct type/size of tubing What does GWP stand for? - ACCU...

EPA 608 9th edition Exam Questions And Answers Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? - ANS 5 years How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? - ANS $44,539 HCFCs contain - ANS Hydrogen, Chlorine, Fluorine, and Carbon Which of the following refrigerants is an HFO? - ANS R-1234ze An ozone molecule contains; - ANS Three oxygen atom...

EPA 608 Certification Exam Questions and answers Ozone depletion is caused by _ in HCFC refrigerants - ANSWERS Chlorine CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - ANSWERS do not dissolve in water or easily break down in the atmosphere How many ozone molecules are destroyed by one chlorine atom - ANSWERS 100,000 ozone molecules The stratospheric ozone layer protects us from _ - ANSWERS ultraviolet radiation from the sun Which health effect increases fro...

EPA 608 Certification Exam Questions and answers Ozone depletion is caused by _ in HCFC refrigerants - ANSWERS Chlorine CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - ANSWERS do not dissolve in water or easily break down in the atmosphere How many ozone molecules are destroyed by one chlorine atom - ANSWERS 100,000 ozone molecules The stratospheric ozone layer protects us from _ - ANSWERS ultraviolet radiation from the sun Which health effect increases fro...