Recovery cylinders - Study guides, Class notes & Summaries
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EPA Certification Exam (New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Graded A
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EPA Certification Exam (New 2023/ 2024 Update) Questions and Verified Answers| 100% Correct| Graded A 
 
QUESTION 
1 
 What should a technician do if they discover that some R-410A was added to an R-22 system? 
 
 
Answer: 
Recover the mixture in a separate recovery tank. 
 
 
 
QUESTION 
 What factor does NOT affect the speed of evacuation? 
 
 
Answer: 
The brand of micron gauge used. 
 
 
 
QUESTION 
 Which of the following is NOT a recommended safety practice when operating refrigerant ...
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EPA Certification Exam (2023/ 2024 Update) Practice Questions and Verified Answers| 100% Correct| Graded A
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EPA Certification Exam (2023/ 2024 Update) Practice Questions and Verified Answers| 100% Correct| Graded A 
 
QUESTION 
 A ternary blend is 
 
 
Answer: 
a three-part blend. 
 
 
 
QUESTION 
 What type of oil does a ternary blend use? 
 
 
Answer: 
alkylbenzene 
 
 
 
QUESTION 
 Which of the following is considered a "system-dependent" (passive) recovery? 
 
 
Answer: 
using the appliance compressor to remove refrigerant 
 
 
 
QUESTION 
 Which of the following is considered a "self-c...
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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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NFPA 10 Latest Update Rated A+
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NFPA 10 Latest Update Rated A+ 
 
(SI) International System of Units 
 
1 in=. mm 25.4 
 
Approved Acceptable to the authority having jurisdiction. 
 
(AHJ) Authority Having Jurisdiction 
O rganization, office or individual responsible for enforcing requirements of a code or standard, 
or for approving equipment, materials, an installation or procedure. 
 
Shall Indicates a mandatory requirement. 
 
Should Indicates a recommendation or that which is advised but not required. 
 
Dry Chemical A po...
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EPA 608 Exam Questions and Answers with Verified Solutions Graded A 2024
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Why are flammable HFO refrigerants classified as A2L and not A2? - They have low flammability, being less flammable than HC refrigerants. 
 
Which of the following statements is true? - Propane cylinders for grilling contains impurities that refrigerant-grade propane does not have. 
 
Over-evacuation of a system can ________ - never occur; you can never pull too much air or other impurities from a system 
 
A system containing a flammable refrigerant must have the process tubes or service connec...
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EPA Certification Exam Prep (2023/ 2024 Update) Practice Questions and Verified Answers| 100% Correct| Grade A
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EPA Certification Exam Prep (2023/ 2024 Update) Practice Questions and Verified Answers| 100% Correct| Grade A 
 
Q: What are 6 Type II appliances? 
 
 
Answer: 
1.Walk-in coolers 
2.Walk-in freezers 
3.Reach-in refrigerators 
4.Reach-in freezers 
5.Residential & Commercial comfort cooling systems 
6.Ice machines 
 
 
Q: To justify the cost increases of service to a customer, simply explain that ----- and required ---- to recover refrigerants in order to ----- and -----. 
 
 
Answer: 
you are b...
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EPA 608 CORE EXAM QUESTIONS AND ANSWERS GRADED A 2024-2025
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What characteristic or characteristics of CFCs make them more likely than other chlorine compounds to reach the stratosphere? - Dont disolve iin water 
 
Each chlorine atom in the stratosphere can destroy how many ozone molecules? - 100,000 ozone molecules 
 
Which refrigerant contains a CFC? 
R500, R12, R113 or R11? - Theyre all CFC's 
 
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? - Hydrogen, chlorine, flourine and carbon 
 
Which refrigerant is a chlorine free refrigerant? - HFC R 1...
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Medical Gases Latest Update with Verified Solutions
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Medical Gases Latest Update with 
 
Verified Solutions 
 
Advantages of Bulk O2 storage systems -Although initially expensive to construct, they are 
far less expensive over the long term 
-They are less prone to interruption 
-They eliminate the inconvenience and hazard of transporting and storing of a large number of 
cylinders 
-Bulk O2 systems regulate delivery pressures centrally, thereby eliminating the need for separate 
pressure-reducing valves at each outlet 
-Finally, bulk systems oper...
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EPA Core Questions with 100% correct answers
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What is the maximum percent by weight that a cylinder may be filled? - 
ANSWER-80%. 
What can happen if a cylinder is overfilled? - ANSWER-Hydrostatic pressure 
could cause the cylinder to explode. 
List three methods for measuring the fill level of a recovery cylinder. - 
ANSWER-Floats, thermistor type sensors, and weighing scales. 
How often must reusable cylinders be hydrostatically tested? - ANSWER-Every 
five years. 
For safety, refrigerant chlinders should not be rusted or damaged and alwa...
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EPA 608 Certification, EPA 608 Exam Study Questions and Answers Graded A With Complete Solutions 2024
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November 14, 1994 - What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? 
 
Memorize it, ya'll. - 1987- 
Montreal Protocol 
 
July 1 1992- 
Violation to vent CFCs or HCFCs 
 
Nov 15 1993- 
Recovery/Recycling equipment must be certified and labeled by EPA 
AND 
Before this date recovery equipment needed to be capable of removing 80% of the refrigerant, w or wo compressor, or 4 in Hg 
After this date recovery equipment needs to be capable of ...
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