R 410a test - Study guides, Class notes & Summaries
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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 3 Questions and Answers Already Passed
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EPA 608 Type 3 Questions and Answers Already Passed On low pressure chillers, moisture typically enters the refrigerant system through air leaks from areas with gaskets or fittings 
The maximum test pressure for leak testing a low pressure centrifugal is: 10 psig 
Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller ... 
A hydrostatic tube test kit is used to: determine if a tube leaks 
Commercial and industrial process refrigeration systems must be rep...
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HVAC UNIT 3 REVIEW TEST WITH COMPLETE SOLUTIONS
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HVAC UNIT 3 REVIEW TEST WITH 
 
COMPLETE SOLUTIONS 
 
Ice melts in ice boxes because 
a. heat flows through the insulated walls. 
b. heat flows through the doorway when it is opened. 
c. heat is moved into the box when warm food is placed in it. 
d. All of the above. D 
 
High-temperature refrigeration is that produced by 
a. heat from a furnace. 
b. an air-conditioning system, 
c. the vegetable cooling system of a refrigerator. 
d. the freezer section of a refrigerator. B 
 
A ton of refrigerat...
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UPDATED EPA 608 QUESTIONS AND ANSWERS 2024
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The state of the refrigerant entering the metering device is? - answer-a subcooled high pressure liquid. 
 
What type of refrigerant is used in very high-pressure appliances? - answer-r-503 
 
What type of refrigerant is used in medium pressure appliances? - answer-r-500 
 
What type of refrigerant is used in high pressure appliances? - answer-r-410a and r-22 
 
What device is located at the end of the liquid line? - answer-the expansion device. 
 
What type of refrigerants are the least harmful...
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R-410A safety & Training Pre-Test 2023/2024.
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R-410A safety & Training Pre-Test 2023/2024.Recovery cylinders used with R-410A must have a DOT rating of: - ANSWER either "DOT 4BA 400" or "DOT 4BW 400" 
 
A system using R-410A refrigerant has bubbles in the sight glass. Technician A says that the system must be low on refrigerant. Technician B says that the bubbles could be caused by the blended refrigerant flashing in the increased volume of the sight glass. Who is correct? - ANSWER Technician B only 
 
When charging a R-410A system that...
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EPA 608 (TYPE II) Exam Questions and Answers | Latest Version | 2024/2025 | Already Passed
- Exam (elaborations) • 12 pages • 2024
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EPA 608 (TYPE II) Exam Questions and 
Answers | Latest Version | 2024/2025 | 
 
Already Passed 
 
When setting up a newly assembled system, what is the initial step? Introduce inert gas to 
pressurize the system and perform a leak test. 
 
According to EPA guidelines, appliances with refrigerant amounts exceeding 50 pounds 
(excluding those for commercial and industrial processes) must be fixed if the leakage rate 
surpasses what percentage of the total charge per year? 15% 
 
What is the minimu...
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EPA 608 Type 3 exam with 100% Complete Solutions Lates 2024-2025 (Graded A+)
- Exam (elaborations) • 16 pages • 2024
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EPA 608 Type 3 exam with 100% Complete Solutions Lates (Graded A+) On low pressure chillers, moisture typically enters the refrigerant system through 
air leaks from areas with gaskets or fittings 
The maximum test pressure for leak testing a low pressure centrifugal is: 
10 psig 
Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on 
CFC-11 chiller 
... 
A hydrostatic tube test kit is used to: 
determine if a tube leaks 
Commercial and industrial process refrigeratio...
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R-410a Refrigerant Study Guide Test 2023/2024.
- Exam (elaborations) • 4 pages • 2024
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R-410a Refrigerant Study Guide Test 2023/2024.R-410A is a Refrigerant, also known as....? - ANSWER SUVA - 410A....... AZ-20......Puron 
 
The cylinder color code for R-410A is...? - ANSWER Rose 
 
HCFC-22 is scheduled for total phase out, by the year? - ANSWER 2020 
 
Suction and Discharge pressures for R-410A are how much higher than R-22 Systems? - ANSWER 40% to 70% 
 
What is Temperature Glide? - ANSWER A range of condensing and evaporating temperatures for one pressure. 
 
When handling Refr...
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EPA 608 CORE EXAM TESTS COMBINED | VERIFIED TEST QUESTIONS WITH CORRECT SOLUTIONS
- Exam (elaborations) • 102 pages • 2023
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EPA 608 CORE EXAM TESTS 
COMBINED | VERIFIED TEST 
QUESTIONS WITH CORRECT 
SOLUTIONS 
Where is the stratosphere? - ANSWER 10 to 30 miles 
Where is ozone located? - ANSWER stratosphere 
What does ozone in the stratosphere above the earth consist of? 
a. Molecules containing 2 oxygen atoms 
b. Molecules containing 3 oxygen atoms 
c. Molecules containing 4 oxygen atoms 
d. Molecules containing 5 oxygen atoms - ANSWER b. Molecules 
containing 3 oxygen atoms 
Which of the following refrigerants ha...
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EPA 608 CORE 2024 |56 QUESTIONS WITH CORRECT ANSWERS ALREADY PASSED AND VERIFIED
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Which of the following refrigerant has a GWP of "1"? 
A) R-22 
B) R-1233zd 
C) R-410A 
D) R-134a - CORRECT ANSWER B) R-1233zd 
 
The molecule found in CFCs and HCFCs that depletes O-Zone is: 
A) Fluorine 
B) Chlorine 
C) Hydrogen 
D) Carbon - CORRECT ANSWER B) Chlorine 
 
Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal method for; 
A) disposable cylinders 
B) recovery cylinders 
C) one pound cans 
D) accumula...
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