Hfc - Study guides, Class notes & Summaries
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EPA 608 EXAM PRACTICE QUESTIONS 1-100
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Ozone depletion is caused by _______ in HFC refrigerants. - Answer-chlorine 
 
CFCs and HCFCs ________ making them capable capable of reaching the stratospheric ozone layer. - Answer-do not dissolve in water or easily break down in the atmosphere 
 
According to the Rolanda-Molina theory, ________ are destroyed by each chlorine atom in the stratosphere. - Answer-100,000 ozone molecules 
 
The stratospheric ozone layer protects us from _______. - Answer-ultraviolet radiation from the sun 
 
Which...
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MACS Certification Questions with Correct Answers 100% Verified 2024
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HFC-152a is ___ - Correct Answer flammable 
 
What are the 2 types of HFC-152a systems? - Correct Answer Direct expansion and secondary loop type 
 
Direct Expansion - Correct Answer Refrigerant directly expands within the evaporator that is located inside the passenger compartment 
 
Secondary Loop (Open Loop) - Correct Answer A circulating non-flammable fluid replaces the evaporator which provides isolation between the flammable refrigerant and the passenger compartment 
 
Section 609 of the C...
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EPA 608 UNIVERSAL EXAM 2024-2025 WITH 400 REAL EXAM QUESTIONS AND 100% CORRECT ANSWERS (GUARANTEED A)/ EPA 608 UNIVERSAL EXAM (NEW!!)
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EPA 608 UNIVERSAL EXAM WITH 400 REAL EXAM QUESTIONS AND 100% CORRECT ANSWERS (GUARANTEED A)/ EPA 608 UNIVERSAL EXAM (NEW!!) 
Equipment covered by EPA regulations include: - all air-conditioning and 
refrigeration equipment using CFC, HCFC or HFC refrigerants. 
All devices used for a refrigerant recovery must: - Meet EPA standards 
Reusable refrigerant containers that are normally under any pressure above 15 pig 
must be hydrostatically tested and date stamped every: - 5 Years 
The EPA can ...
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CFC/HCFC/HFC Questions and Answers 2023
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CFC/HCFC/HFC Questions and Answers 2023 
HFC 
HFC Refrigerant - HFC refers to the chemical composition of the refrigerant. HydroFluoroCarbon indicates that the refrigerant is comprised of Hydrogen, Fluorine, and Carbon. Common HFC refrigerants are R134a 
 
 
 
CFC 
CFC Refrigerant - CFC refers to the chemical composition of the refrigerant. ChloroFluoroCarbon indicates that the refrigerant is comprised of Chlorine, Fluorine, and Carbon. Common CFC refrigerants are R11, 12,13,113,114, and 115 
 
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MACS 609 CERTIFICATION ACTUAL QUESTIONS WITH APPROVED ANSWERS |LATEST 2024/2025
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When two or more refrigerants are mixed, what must be done with the mixture? Send off-site to EPA certified reclaimer for reclamation or destruction 
 
Which SAE Standard(s) must be referred to on the label of approved HFC-134a refrigerant recycling machines? SAE J2210 or SAE J2788 
 
When it has been determined that an A/C system has a low refrigerant charge, what should be done? Perform a leak test procedure 
 
Which item is not mentioned in the SAE J1991 standard of refrigerant purity? ...
Too much month left at the end of the money?
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EPA 608 Certification Core Practice Test exam 2024 with 100% correct answers
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As of what date did it become unlawful to release Class 1 and Class II refrigerants to the atmosphere?Answer - July 1, 1992. 
 
What is the ozone layer and why is it important to us on Earth?Answer - Protective shield for Earth from the sun's harmful ultraviolent (UV) rays in the stratosphere layer that extends about 6 to 30 miles above earth. 
 
The atom found in CFC and HCFC refrigerants that destroys ozone in the stratosphere is?Answer - Chlorine. 
 
What is an ozone molecule made of?Answ...
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MACS 609 Certification Practice Questions with complete solutions |Latest 2024/2025
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What should you do when replacing hoses? Make sure you have the correct type/size of tubing 
 
What does GWP stand for? Global Warming Potential 
 
CO2 is equal to what A/C system? R-744 
 
HFO-1234yf systems are acceptable in what kinds of vehicles? Passenger cars, light-duty trucks, medium-duty passenger vehicles, heavy-duty pickup trucks, and complete heavy-duty vans 
 
HFO-1234yf systems are not acceptable in what kinds of vehicles? Heavy-duty trucks, refrigerated transport, and of...
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Progression: Maintenance Tech I - II Conventional Top Predicted Questions and Certified Answers
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Customer premises - Connected to the network through distribution taps spliced into the 
coaxial cable. 
Branches in the architecture - The downstream signal is distributed within nearby 
neighborhoods using 0.412-inch to 0.625-inch diameter coaxial cable, splitters, and 
directional couplers. 
Bridger amplifier - A portion of the downstream signal is boosted before being split and 
routed to as many as four separate coaxial cables—the branches in the architecture. 
Trunk amplifiers - Seve...
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EPA 608 Practice exam type 1 solved correctly
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EPA 608 Practice exam type 1 solved correctly The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. Restricted to technicians who are EPA certified and refrigerant recovery 
A small Pliance is defined as a system that is 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. System dependent 
Y...
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EPA 608 CERTIFICATION LATEST ACTUAL EXAM 2024 VERSION 2 WITH 200 QUESTIONS AND CORRECT ANSWERS (100% CORRECT VERIFIED ANSWERS)
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EPA 608 CERTIFICATION LATEST ACTUAL EXAM 2024 VERSION 2 WITH 200 QUESTIONS AND CORRECT ANSWERS (100% CORRECT VERIFIED ANSWERS) 
Recovery equipment is certified by _________. - ANSWER-an EPA-approved 
laboratory 
The EPA defines this as maintenance, service, or repair that involves removal of 
the appliances compressor, condenser, evaporator, or auxiliary heat exchanger coil 
- ANSWER-Major maintenance 
When recovering refrigerant from small appliances, you must recover _________. 
- ANSWE...
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