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