Refrigerant - Study guides, Class notes & Summaries
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Refrigerant 410A Certification Questions and Answers Already Passed
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Refrigerant 410A Certification Questions 
 
and Answers Already Passed 
 
A full nitrogen cylinder has a pressure approx: 2500 psig 
 
A leak detector capable of sensing _____ is needed when working with R-410a. HFC 
 
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 increasing volume of the sight glass. Who is correct? 
Te...
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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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FDNY Z51 RMO Questions and Answers 100%Verified Graded A+ already passed!!
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FDNY Z51 RMO Questions and Answers 100%Verified Graded A+ already passed!! 
the efficiency of the refrigerant cycle is affected by the operation of the condenser. Of 
the following, a more efficient centrifugal compressor operation results from - correct 
answer lowering the condenser pressure 
In most semi hermetic compressors, the suction vapor is used for - correct answer cools 
the motor 
The amount of refrigerant that flows through the orifices of an economizer is determined 
by the - corre...
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EPA 608 Universal Exam ( ACTUAL EXAM ) Questions With Verified Solutions| ALREADY PASSED
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EPA 608 Universal Exam ( ACTUAL 
EXAM ) Questions With Verified 
Solutions| ALREADY PASSED. 
Refrigeration technicians who violate the Clean Air Act can: - - 
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: - - ANSWER recovery and 
recycling. 
Refrigerant that is recovered can be returned to: - - ANSWER 
the same system or other systems owned by the same...
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EPA 608 Type II Test Questions and Answers (2024 / 2025) (Verified Answers)PDF
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1.	Before charging a new system with refrigerant, what should be done 
Answer:?: Pres- surize with nitrogen (classified as an inert gas) and leak 
 
2.	Which refrigerant can be used for leak detection as a trace gas and pres- surized 
with nitrogen 
 Answer:?: R-22 
 
3.	What tools can you use to find general area of leaks and pinpoint leaks? 
a.	Soap bubbles. 
b.	Look for oil residue 
c.	Electronic or ultrasonic leak detector will provide the general area of the leak 
d.	Refrigerant dye 
Answer...
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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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EPA 608 Type 3 exam with 100% correct answers
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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 repaired when the leak rate...
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SAE 609 Questions and Answers 100% Pass
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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: - ANSWER-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 unit 
who's right - ANSWER...
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Nate Core exam 2024 with 100% correct answers
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What makes a contract legal? - correct answer Any verbal or written agreement. 
 
Why should hacksaws and power saws not be used when cutting tubing or refrigerant lines? - correct answer The small shavings created by the teeth of the saw can enter the tubing and do damage to the components of the system. 
 
Why should tube cutters be used? - correct answer They produce a square, clean cut and leave no shavings to contaminate the system. 
 
What can be used to cut capillary tubing? - correct ans...
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EPA 608 CORE Exam Questions and Answers (2022/2023) (Verified Answers) Graded A+
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EPA 608 CORE Exam Questions and Answers (2022/2023) 
(Verified Answers) Graded A+ 
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, flouri...
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