R 410a test - Study guides, Class notes & Summaries
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EPA Type 2 Practice Test Questions with 100% Correct Answers | Verified | Latest Update 2024| Rated A+
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EPA Type 2 Practice Test Questions with 100% Correct Answers | Verified | Latest Update 2024| Rated A+ 
Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: 
pressurized nitrogen 
When a new system has been assembled, the first thing to do is: pressurize the system with inert gas and leak check 
EPA regulations require that leaking commercial or industrial process refrigeration equipment must be repaired when the leak rate exceeds______ of the charge per year. 35%...
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EPA Type 2 Questions and Answers | Latest Version | 2024/2025 | Already Passed
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EPA Type 2 Questions and Answers | 
Latest Version | 2024/2025 | Already 
 
Passed 
 
What substance should be used to detect leaks in heat pumps converted from R22 to R407C? 
Pressurized nitrogen gas 
 
After assembling a new refrigeration system, what is the first step? Pressurize it with an inert 
gas and conduct a leak test 
 
Under EPA regulations, when must commercial or industrial refrigeration systems be repaired 
due to leakage? When the annual leak rate exceeds 35% 
 
If refrigerant ha...
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R-410A TEST EXAM 2024 WITH 100% ACCURATE SOLUTIONS
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R-410A
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EPA 608 – core exam 2024
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EPA 608 – core exam 2024 
Which of the following refrigerant has a GWP of "1"? 
A) R-22 
B) R-1233zd 
C) R-410A 
D) R-134a - Answer ️️ -B) R-1233zd 
The molecule found in CFCs and HCFCs that depletes O-Zone is: 
A) Fluorine 
B) Chlorine 
C) Hydrogen 
D) Carbon - 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)...
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UPDATED EPA 608 EXAM WITH 100% CORRECT ANSWERS(2023)
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the state of the refrigerant entering the metering device is? 
A subcooled high pressure liquid. 
 
 
 
what type of refrigerant is used in VERY high-pressure appliances? 
R-503 
 
 
 
what type of refrigerant is used in MEDIUM pressure appliances? 
R-500 
 
 
 
what type of refrigerant is used in HIGH pressure appliances? 
R-410A and R-22 
 
 
 
what device is located at the END of the liquid line? 
The expansion device. 
 
 
 
what type of refrigerants are the LEAST harmful to the ozone layer?...
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EPA 608 Type 3 Exam Actual Questions And 100% Verified Guaranteed Answers.
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On low pressure chillers, moisture typically enters the refrigerant system through - correct answer air leaks from areas with gaskets or fittings 
 
The maximum test pressure for leak testing a low pressure centrifugal is: - correct answer 10 psig 
 
Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller - correct answer ...
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HVAC CONTRACTOR EXAM COMPLETE SOLUTIONS
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HVAC CONTRACTOR EXAM COMPLETE SOLUTIONS 
An instrument that measures potential differences between 2 points in an electrical circuit is called? 
A. potentiometer 
B. thermistor 
C. ohmeter 
D. voltmeter ️voltmeter 
This device uses a thermal sensing bulb at the outlet of the evaporator to sense temperature and 
control superheat 
A. automatic expansion valve 
B. thermostatic expansion valve 
C. low side float 
D. schraeder valve ️thermostatic expansion valve 
when installing a re...
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EPA 608 (2023) Exam with correct Answers
- Exam (elaborations) • 10 pages • 2023
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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 ha...
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EPA 608 CORE PRACTICE TEST|UPDATED&VERIFIED|100% SOLVED|GUARANTEED SUCCESS
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To process refrigerant to a level that is equal to new product specifications as 
Reclaiming 
 
 
 
The low side test pressure data plate value should be used by a technician to determine a safe pressure for 
Leak testing 
 
 
 
 
 
Silicone elastomers are not compatible with what refrigerant 
HFC 
 
 
 
How many molecules does an ozone molecule contain? 
3 oxygen atoms 
 
 
 
Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal me...
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EPA Type 2 FINAL TEST 2024.
- Exam (elaborations) • 2 pages • 2024
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EPA Type 2 FINAL TEST 2024. 
Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: - ANSWER pressurized nitrogen 
 
When a new system has been assembled, the first thing to do is: - ANSWER pressurize the system with inert gas and leak check 
 
EPA regulations require that leaking commercial or industrial process refrigeration equipment must be repaired when the leak rate exceeds______ of the charge per year. - ANSWER 35% 
 
Prior to replacing the condenser coil in ...
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