Exam (elaborations)
EPA - Environmental Protection Agency: Q’s And A’s
- Course
- Institution
EPA - Environmental Protection Agency: Q’s And A’s
[Show more]
Content preview
EPA - Environmental Protection Agency: Q’s And A’sAfter 1995, supplies of CFC refrigerants will come from Right Ans -
Recovery and recycling
A compound pressure gauge for the low side of the system measures pressure
in Right Ans - psig and inches of mercury (Hg)
A synthetic lubricant presently used with ternary blends containing HCFC's
Right Ans - Alkybenzenes
Ester based oils can be mixed with Right Ans - No other oils
Chloroflourocarbons (CFC's) and Hydrochloroflourocarbos(HCFC's) have the
following similarity Right Ans - They must be recovered before opening or
disposing of an appliance.
To RECOVER refrigerant is to Right Ans - remove refrigerant in any
condition from a system and store it in external container without testing or
processing it in any way.
System Dependent recovery devices Right Ans - captures refrigerant with
the aid of the pressure of the gas in the system and/or the compressor of the
appliance itself
A refillable cylinder must bot be filled above? Right Ans - 80%
When scrapping a disposable cylinder, the pressure should be reduced at least
to: Right Ans - 0 psig
The definition of RECYCLE is: Right Ans - to clean refrigerant for reuse by
oil separation and single or multiple passes through filter-driers.
Refrigerant cylinders should be Right Ans - All of the above
what is an azeotropic mixture of refrigerants? Right Ans - the mixture
combines and becomes a third refrigerant with its own separate and
individual characteristics
, Beginning November 14, 1994, the sale of refrigerants and the ability to
service and repair refrigeration and air conditioning equipment will be
Right Ans - restricted to persons certified with refrigerant recovery
Under EPA regulations, what standard must reclaimed refrigerant meet
before it can be resold? Right Ans - ARI 700
You have to check a unit which has lost a complete charge. Which gas would
cause the least damage to the environment? Right Ans - dry nitrogen only
A refrigerant label is placed on a Right Ans - refrigerant cylinder being
retired for reclaiming
A refrigerant oil that is hygroscopic Right Ans - has a high affinity for water
which refrigerant is an HFC Right Ans - R-134a
which refrigerant is an HCFC Right Ans - R-22
which refrigerant is a CFC Right Ans - R-500
which refrigerant contains no chlorine Right Ans - R-134a
Whenever dry nitrogen is used in service and installation practice, what item
is of most importance for SAFETY Right Ans - That a relief valve is inserted
in the line downstream from the regulator
To determine the safe pressure for leak-testing a system, you should use:
Right Ans - low side test pressure indicated on the system data or name plate
Why must cylinders designated "refillable" by the department of
transportation be sued for transporting recovered refrigerant? Right Ans -
to meet safety requirements
To work on small appliances after Nov. 14, 1994, technicians must be certified
as Right Ans - Type I, Universal
The size of a vacuum pump and the size of the vacuum hose line will: Right
Ans - determine dehydration time
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 LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79202 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now