The use of ultraviolet (UV) or fluorescent dyes in an HFO-1234yf system is:
Ans: Approved by some vehicle manufactures but not by others
Quiz One effect of some refrigerant gases in the atmosphere is that they:
Ans: Contribute to trapping heat
Quiz Which item is not mentioned in the SAE J2099 Standard of refrigerant purity?
Ans: Sludge
Quiz When it has been determined that an A/C system has a low refrigerant charge, what
should be done?
, Ans: Perform a leak test procedure
Quiz Which item is not mentioned in the SAE J1991 standard of refrigerant purity?
Ans: Acid
Quiz Which of the following is unlikely to affect refrigerant charge accuracy?
Ans: A/C Compressor
Quiz CFC-12 recovery equipment has SAE 3/8-inch service fittings. HFC-134a recovery
equipment has:
Ans: Quick-couple design
Quiz What is the advantage of using refrigerant identification equipment?
Ans: Allows the ability to determine what type of refrigerant is in system
Quiz If an HFC-134a A/C system still has pressure after the first refrigerant recovery process is
complete (including the five-minute pause), additional recovery is necessary until the system
vacuum level remains stable for:
Ans: 2 minutes
Ans: Approved by some vehicle manufactures but not by others
Quiz One effect of some refrigerant gases in the atmosphere is that they:
Ans: Contribute to trapping heat
Quiz Which item is not mentioned in the SAE J2099 Standard of refrigerant purity?
Ans: Sludge
Quiz When it has been determined that an A/C system has a low refrigerant charge, what
should be done?
, Ans: Perform a leak test procedure
Quiz Which item is not mentioned in the SAE J1991 standard of refrigerant purity?
Ans: Acid
Quiz Which of the following is unlikely to affect refrigerant charge accuracy?
Ans: A/C Compressor
Quiz CFC-12 recovery equipment has SAE 3/8-inch service fittings. HFC-134a recovery
equipment has:
Ans: Quick-couple design
Quiz What is the advantage of using refrigerant identification equipment?
Ans: Allows the ability to determine what type of refrigerant is in system
Quiz If an HFC-134a A/C system still has pressure after the first refrigerant recovery process is
complete (including the five-minute pause), additional recovery is necessary until the system
vacuum level remains stable for:
Ans: 2 minutes
