When retrofitting a Motor Vehicle A/C system with a new refrigerant the technician must:

A)

Relabel the system to indicate the new refrigerant being used in the system

B)

Change the high and low side service connections to the SNAP designated fittings

C)

Use only SNAP approved refrigerants in the MVAC system

D)

All of the above

In cases where the a motor vehicle (with an A/C system) is being scraped or junked, the refrigerant is being sent off-site to a reclaiming facility, then the refrigerant must be recovered to a minimum vacuum of _____ inches of mercury.

A)

0

B)

4

C)

27

D)

29.9

Recycled R-134a refrigerant cannot exceed what levels of contaminants?

A)

Moisture: 50 PPM by weight

B)

Refrigerant oil: 500 PPM by weight

C)

Non-condensable gases (air): 150 PPM by weight

D)

all the above








During the process of Refrigerant Recovery, the Technician should operate the recovery unit until the system pressure has been reduced to a vacuum, then ______________.

	A)	immediately close the valves in the service lines and remove the lines from the vehicle.
	B)	immediately close the valves in the service lines and charge the system.
	C)	Recover to a vacuum of 4 inches of mercury, isolate the system and wait 5 minutes to see that the system holds the vacuum
	D)	Open the shut-off valves which must be located within 4 inches of the service ends

Answer rating: 100% (QA)

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