ANSWERS
Disposable cylinders are manufactured to specifications
established by: - ---Answers-----dot (department of
transportation)
On _______, the u.s. epa enacted the provisions of this agreement
into regulations for the united states - ---Answers-----aug 1,
1988
Which of the following refrigerant has a molecular formula is
c2h4f2: - ---Answers-----r-152a
With the rising cost of refrigerant, the value of the refrigerant
stored in a 50-lb. Recovery tank is worth _______ the cost of a
recovery tank - ---Answers-----5x
R- 134a is a corrosive refrigerant: - ---Answers-----false
Used cylinders can be recycled with other scrap metal. - ---
Answers-----true
Refrigeration cylinders must be re-tested at ______ intervals. - --
-Answers-----five-year
, Persons servicing mvacs do not have this choice they must be
certified as _______ mvac technicians if they perform the ac
service for compensation. - ---Answers-----section 609
Ozone in the earth's stratosphere is created by uv light striking
_____ molecules - ---Answers-----oxygen
The ahri standard now contains the new specification to limit
unsaturated impurities in hfc-134a to a maximum level of
________ - ---Answers-----40 ppm
Refrigerants may be mixed in recovery cylinders: - ---Answers-
----false ( no mixtures)
After reaching the required recovery vacuum on an system, if the
system pressure _____, indicating that there is either refrigerant
in liquid form, refrigerant trapped in the oil, or a leak in the
system. - ---Answers-----rises
Most halogenated compounds will decompose at room
temperature: - ---Answers-----false
Hfc-152a mvac systems are acceptable if mvac systems must be
designed to avoid concentrations in the passenger cabin that are
above ______ for more than 15 seconds. - ---Answers-----3.7%