Low GWP Refrigerant Exam Questions And Answers Practice Questions with Solutions Newest | Already Graded A+.

Low GWP Refrigerant Exam Questions And Answers

Practice Questions with Solutions Newest | Already

Graded A+.




An uppercase letter designation (R-407A, R-407B, R-

407C) is used when refrigerant blends are:




Composed of the same refrigerant, but with the same

percentages of each.




Composed of different refrigerants but have the same

thermodynamic properties.

,Composed of the same refrigerants but manufactured by

different companies.




Composed of the same refrigerants, but with different

percentages of each. - ANSWER-Composed of the same

refrigerants, but with different percentages of each.




Flammable refrigerant cylinders must have:




Dip tube allowing for liquid transfer.




One-time pressure relief.




Permanently installed pressure/ temperature gauge.

,Red band at the top of the container. - ANSWER-Red

band at the top of the container.




Which of the following refrigerants has the lowest global

warming potential (GWP)?




R-32

R-290

R-404A

R-454B - ANSWER-R-290




Which of the following should be done prior to beginning

the recovery process?

, Change the oil in the vacuum pump.




Inform local authority having jurisdiction.




Purge air from the refrigerant hoses to prevent refrigerant

contamination.




Vent the contents of the recovery tank to ensure it is

empty. - ANSWER-Purge air from the refrigerant hoses to

prevent refrigerant contamination.




When working with A2L refrigerants, which one of the

following is not an approved leak detection method?