Recovery and Recharging Air Conditioning Systems



1.	Which of the following is true of the refrigerant identifier?
	A.	It can be used to check air conditioning systems.
	B.	It can be used to check newly purchased refrigerants.
	C.	It can reveal contaminated refrigerant.
	D.	All of the above.

2.	Sparks and hydrocarbon ignition may result when attempting to recycle hydrocarbon-contaminated refrigerant in the recycling machine.
	A.	True.
	B.	False.

3.	A refrigerant recovery tank should never be filled beyond:
	A.	40 percent of capacity.
	B.	50 percent of capacity.
	C.	60 percent of capacity.
	D.	70 percent of capacity.

4.	What is the maximum amount of refrigerant you should put into a 20-pound recovery tank?
	A.	12 pounds.
	B.	10 pounds.
	C.	8 pounds.
	D.	5 pounds.

5.	Which of the following is true of R22 refrigerant?
	A.	It is used in residential air conditioning systems.
	B.	It is used in industrial air conditioning systems.
	C.	It is not approved for automotive applications.
	D.	All of the above.

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