EPA 608 (TYPE II) Exam Questions And Answers With Verified Updates
7 views 0 purchase
Course
EPA 608
Institution
EPA 608
The EPA regulations require that leaking commercial or industrial process refrigeration equipment must
be repaired when the leak rate exceeds _____ of the charge per year. - 35%
The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to use a remove
the charge from t...
EPA 608 (TYPE II) Exam
The EPA regulations require that leaking commercial or industrial process refrigeration equipment must
be repaired when the leak rate exceeds _____ of the charge per year. - 35%
The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to use a remove
the charge from the cylinder as a? - Liquid
Your recovery/recycling machine has R-502 refrigerant in it. You now have to recover refrigerant from a
unit with R-22. What must be done before the R-22 refrigerant can be recovered/recycled? -
Recover as much R-502 from the recovery unit as possible, change filter, & evacuate.
.
The EPA regulations require that any appliances containing more than 50 pounds of refrigerant (except
for commercial & industrial process refrigeration) must be repaired when the leak rate exceeds
_________ of the charge per year? - 15%
R-410A requires recovery tanks rated for at least? - 400 psig
After refrigerant liquid has been recovered from a system, any remaining vapor is? - Condensed by
the recovery system.
In a refrigeration system with a TXV (or other type of throttling device), the component directly following
the condenser is the? - Receiver
When a new system has been assembled, the first thing to do is? - Pressurize the system with an
inert gas & leak check
When charging an R-410A system that uses a water-cooled condenser, you must first charge with vapor
to a pressure of at least________, before switching to liquid charging. - 120 psig
Recovered refrigerant may contain what? - 1.) Acids
2.) Moisture
, 3.) Oils
Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from a
unit with R-410A. What must be done before your recovery unit can be used to recover R-410A? -
1.) The recovery unit must be EPA certified for use with R-410A.
2.) The recovery tank must be designed for the pressure of R-410A.
3.) The filter & lubricant in the recovery unit must be changed, & the recovery unit evacuated.
To recover liquid refrigerant, you must connect one hose to the? - Liquid Line.
Before using a recovery unit to remove a charge, what steps should be taken? - 1.) Check service
valve positions.
2.) Check the oil level in the recovery unit.
3.) Evacuate recovery unit & recovery tank.
On refrigeration units that use an open compressor; the ________ is most likely to leak if the unit is not
used for several months. - The rotating shaft seal.
Noncondensables in a system cause? - Higher discharge pressure.
Heat Pumps that use R-410A should be leak checked with? - Pressurized Nitrogen.
A reciprocating compressor should not be energized when? - The discharge service valve is closed.
In a refrigeration system, the component directly following the evaporator is the? - Accumulator.
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 ACADEMICMATERIALS. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
