Exam (elaborations)
EPA 609 PRACTICE QUESTIONS AND ANSWERS
- Course
- Institution
EPA 609 PRACTICE QUESTIONS AND ANSWERS
[Show more]
Content preview
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller GEEKA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78600 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now