defined and accurately solved best
graded A+
Practice questions for this set
Terms in this set (160)
Refrigeration technicians Lose their EPA certification, be fined, be required to appear in
who violate the Clean Air Federal court.
Act can: -
After 1995, any supplies of recovery and recycling.
CFC refrigerants to service
existing units in the USA can
only come from:
-
Refrigerant that is the same system or other systems owned by the same person
recovered can be without restriction.
returned to: -
Refrigerant can not be has been chemically analyzed and the refrigerant meets the
called "reclaimed" unless it: ARI-700 standard.
-.
The EPA can require a revocation of the technicians certification.
technician to demonstrate
their ability to perform
proper procedures for
recovering and/or recycling
refrigerant. Failure to
demonstrate competency
can result in:
-
,What characteristic(s) of Refrigerants that contain chlorine but not hydrogen are so
CFCs make them more stable that they do not break down in the lower atmosphere
after being released. The chlorine or bromine reacts with the
Likely to reach the ozone, causing it to change back to oxygen, thus destroying
stratosphere than most the ozone layer.
other compounds
containing chlorine? -
A system is considered The vacuum indicator shows you have reached and held the
dehydrated when: - required finished vacuum.
Disposable refrigerant virgin refrigerant
containers are used for
______
Which refrigerant is an R-123, R-124, R-22
HCFC? -
What statement is true about It is a mixture that acts like a single-component refrigerant over
an azeotropic refrigerant its entire range.
mixture? -
Chlorofluorocarbos It is a mixture that acts like a single-component refrigerant over
(CFCs) and its entire range.
hydrochlorofluorocarbons
(HCFCs) have which of the
following in common? -
To scrap a disposable 0 psig.
cylinder, the internal
cylinder pressure should
be reduced to at least: -
Manifold gauge sets are often
color coded, when this is
done, the high pressure
gauge is color coded: - Red.
, In general, blended as a liquid.
refrigerants should be
charged: -
Blended refrigerants leak in uneven amounts due to different vapor pressures.
from a system: -
Which of the following gases
help form the earth's
protective shield?
Stratospheric Ozone
In a refrigerant system, the
device that changes a low
pressure vapor to a high
pressure vapor is the:
compressor.