ANSWERS SURE A+
✔✔A technician who successfully completes the training and certification in an EPA-
approved Section 609 program can legally service MVAC systems that use any of these
refrigerants EXCEPT:
(A) R-22.
(B) R-12.
(C) R-1234yf.
(D) R-134a. - ✔✔(A) R-22.
✔✔Electronic leak detectors for R-1234yf should meet:
(A) J2297.
(B) J2298.
(C) J2913.
(D) J1628. - ✔✔(C) J2913.
✔✔Technicians servicing an MVAC system should do any of these EXCEPT:
(A) store refrigerant in a disposable container.
(B) wear safety goggles.
(C) avoid direct contact with the refrigerant.
(D) work in a well-ventilated area. - ✔✔??????
✔✔Requirements for recovery/ recycling/recharging equipment for R-1234yf refrigerant
are set by SAE: standard:
, (A) J1990.
(B) J2788.
(C) J2843.
(D) J2209. - ✔✔??????
✔✔R- 1234yf refrigerant has a global warming potential(GWP) of:
(A) 1
(B) 4
(C) 124
(D) 1430 - ✔✔??????
✔✔R-1234yf is a preferred refrigerant over R-134a because:
(A) R-1234yf is highly flammable.
(B) R-1234f has a high GWP.
(C) R-1234yf depletes the ozone layer.
(D) R-1234yf has a low GWP. - ✔✔??????
✔✔Technician A says that SAE standard J639 spells out details for system design,
implementation, and service.
Technician B says that SAE standard J639 specifies refrigerant fitting types and sizes
for each refrigerant.
Who is right?
(A) A only
(B) B only
(C) Both A and B
(D) Neither A nor B - ✔✔??????
✔✔Servicing MVAC systems on hybrid and electric vehicles requires:
(A) an electronic leak detector dedicated to hybrid and electric vehicle MVAC systems.
(B) following J1989 for refrigerant recovery.
(C) service fittings specially designed for hybrid and electric vehicle MVAC systems.
(D) special service procedures to disable the high-voltage system prior to service. -
✔✔??????
✔✔Technician A says that anyone servicing MVAC systems for hire must be trained
and certified.
Technician B says that each piece of refrigerant handling equipment that is used to
service motor vehicle air conditioners must be approved and certified.
Who is right?
(A) A only
(B) B only