Approved refrigerant - Study guides, Class notes & Summaries
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Z-51 REFRIGERATION TEST With Correct Solutions 2024 Update
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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...
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SAE 609 Questions and Answers 100% Pass
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SAE 609 Questions and Answers 100% Pass 
The recovery process on an R-12 or R-134a A/C System should continue until a stable vacuum is held by the system for: 2 minutes 
A recycled refrigerant container has been checked and found to be above the given pressure limit for the ambient temperature 
Technician A says that the refrigerant container should be placed in a cooler storage area before use 
Technician B says that the vapor in the container should be slowly vented into a refrigerant handling...
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EPA 608 Certification Exam with 100% Correct Answers 2024 / 2025
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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...
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EPA 608 Universal Exam With 100% Correct Answers 2023
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Refrigeration technicians who violate the Clean Air Act can: - - Correct answer-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: - - Correct answer-recovery and recycling. 
Refrigerant that is recovered can be returned to: - - Correct answer-the same system or 
other systems owned by the same person without restriction. 
Refrigerant can not be called "reclaimed...
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution.
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution. 
As of what date did it become unlawful to release Class 1 and Class II 
refrigerants to the atmosphere? 
a. July 1, 1992 
b. July 1, 1993 
c. November 14, 1994 
d. January 1, 1996 Ans a. July 1, 1992 
What is the ozone layer and why is it important to us on Earth? 
a. Thin layer of R-22 in the atmosphere that filters UV. 
b. Protective shield for Earth from the sun's harmful ultraviolent (UV) 
rays in the strato...
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ODP test Questions and Answers 2023
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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...
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(Answered) EPA SECTION 608 CORE (2021-2022 revision)
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EPA SECTION 608 CORE (2021-2022 revision) 
A disposable cylinder should be reduced to what pressure before scrapping? 
a. 0 psig 
b. 20 psig 
c. 50 psig 
d. 80 psig 
 
A major system repair is being performed on a R-22 appliance. What CANNOT be done to recharge the appliance? 
a. Add R-22 after the repair is complete. 
b. Retrofit the unit to R-407C. 
c. Use recovered or recycled R-22 from the same 
owner. 
d. Top off the unit with R-410a. 
A refillable cylinder must not be filled above what ...
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EPA 608 Type 1 Questions and Answers 100% Pass
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EPA 608 Type 1 Questions and Answers 100% Pass 
Recovery equipemnt used for the service or repair of small appliances must be certified by an EPA approved lab if the recovery equipment was made after November 15, 1993 
Recovery devices made before 11-15-93 and are used for recovery of refrigerant from small appliances must be capable of: recovering 80% of the refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993 
EPA's definition of...
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EPA 608 Exam Practice Questions 1-100
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EPA 608 Exam Practice Questions 1-100EPA 608 Exam Practice Questions 1-100 
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 prote...
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Low GWP Refrigerant Practice Questions with Verified Answers
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Low GWP Refrigerant Practice 
Questions with Verified Answers 
 
After installation, the refrigerant piping for an A2L system must be: 
 
cleaned with an alcohol-based solution to remove grease and oil. 
 
pressurized with dry nitrogen to perform a leak test. 
 
pressurized with a non-flammable refrigerant (A1) to perform a leak test. 
 
vibration tested using whichever method is approved by the local code authority. pressurized 
with dry nitrogen to perform a leak test. 
 
After reaching the re...
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