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EPA 609 PRACTICE QUESTIONS AND ANSWERS
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EPA 609 PRACTICE QUESTIONS AND ANSWERS
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EPA 609 PRACTICE QUESTIONS AND ANSWERSWith the recovery unit shut off wait atleast ________ minutes to determine if all
refrigerant has been removed. - answer- 5
After initial recovery procedures, if additional recovery is required, repeat the process
until the A/C system vacuum remains stable for _____ minuites. - answer- 2
When checking a cylinder of recycled R-134a for non condensable gases at 70 degrees
F the pressure should not exceed - answer- 76 psig
The lubricant used with HFC-134a is - answer- PAG or POE
Refrigerant oil that is hygroscopic has a high _________ for water. - answer- Affinity
Violation of Section 609 of the clean air act may result in ________ fine per violation. -
answer- 27,500
HFC-134a must be recovered effective - answer- Nov. 15 1995
When a blend contains HCFC-22 all hoses must be replaced with _____ type hoses -
answer- Barrier
Used disposable refrigerant cylinders can be __________ with other scrap Metal after
they are empty. - answer- Recycled
High, low and center service hoses must have shut-off valves within ______ inches of
their service ends. - answer- 12
Moisture level in Recycled R-12 (CFC-12) that has been directly removed from, and
intended to be returned to, a mobile air-conditioning system cannot exceed _______
PPM by weight. - answer- 15
Over the road refrigeration units and R-22 (HCFC) air conditioning, such as that found
in buses, also requires Section ______ certification - answer- 608
Ozone depletion increases global warming - answer- True
Refrigerants are lighter than the air: - answer- False
Stratosphere layer consists of about _____ of the available Ozone: - answer- 90%
Every refrigerant cylinder need not be protected by some type of pressure relief device:
- answer- False
, If a technician is already trained and certified to handle CFC-12, he has to be re-
certified to handle HFC-134a - answer- False
Which of the following refrigerants has high ozone-depletion potential: - answer- CFCs
R-152a is a chemical compound composed of which of the following: (Multiple Answer
Question) - answer- Carbon, Hydrogen, Fluorine
R-134a refrigerant does pose a cancer or birth defects hazard - answer- False
External Recovery Tanks must be evacuated to ______ of mercury before being put
into service - answer- 27 inches
Disposable Refrigerant Tanks, under _______ must be evacuated before being
scrapped - answer- 20 pounds
HFC-134a, is the refrigerant that replaced _______ in automotive air conditioning
systems - answer- R-12
Which of the following has the Ozone Depletion Potential (ODP) value of 1 - answer-
CFC-11
CFCs manufacture was discontinued as of _______ - answer- January 1, 1996
______ of stratospheric chlorine comes from ozone-depleting substances - answer-
82%
MVAC systems need not be evacuated to a vacuum before servicing - answer- False
Supplies of CFC refrigerant for equipment servicing can ONLY come from which of the
following: - answer- recovery, reclamation, and recycling
Which of the following in refrigerant makes them chemically less stable once they enter
the atmosphere - answer- Hydrogen
CFCs deplete stratospheric ozone and that a "hole" had developed in the ozone layer
over ______ - answer- Antarctica
______ has recently been approved for use in automobile applications as an alternative
to R-134a - answer- R152a
HFCs and HCFCs decompose when released in the lower atmosphere: - answer- True
The Global Warming Potential is reported relative to _______: - answer- carbon dioxide
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