100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Commercial Refrigeration Exam II Questions with Latest Update $15.49   Add to cart
Quickly navigate to
Preview
  2.  
  3. Refrigeration Machine Operator
  4.  
  5. Refrigeration machine operator

Exam (elaborations)

Commercial Refrigeration Exam II Questions with Latest Update
 7 views  0 purchase
  • Course
  • Refrigeration machine operator
  • Institution
  • Refrigeration Machine Operator

5% - Answer-If converting from mineral oil to POE oil, what is considered to be the industry standard for residual mineral oil content? Refractometer Oil conversion test kit - Answer-When converting to POE from mineral oil, what can be used to determine residual mineral oil content? Global...

[Show more]

Preview 2 out of 11  pages

Document information

  • September 9, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • commercial refrigeration exam ii questions with la
  • 5 answer if converting from mineral oil to poe

Written for

  • Refrigeration machine operator
  • Refrigeration machine operator

Seller

avatar-seller
lectknancy

Reviews received

Content preview

Commercial Refrigeration Exam II
Questions with Latest Update
5% - Answer-If converting from mineral oil to POE oil, what is considered to be the
industry standard for residual mineral oil content?

Refractometer

Oil conversion test kit - Answer-When converting to POE from mineral oil, what can be
used to determine residual mineral oil content?

Global warming potential (GWP) - Answer-Some refrigerants are now being phased out
due to their

HCFC - Answer-Which currently used refrigerant category is quickly disappearing due
to its ozone depletion potential?

404a - Answer-An orange refrigerant container is typically

Ternary blend - Answer-When three refrigerants make up a new refrigerant it is
considered to be a

Temperature glide - Answer-The difference between bubble point and dew point
temperatures is called

HC - Answer-Which of the following categories of refrigerant is least harmful to the
environment?

R-290 - Answer-One of the refrigerants now being used in small refrigerant quantities in
self-contained systems is

400 - Answer-Which "series" of refrigerants should be charged into a system as a
liquid?

The separation of a blended refrigerant in the evaporator or condenser - Answer-What
is fractionation?

POE - Answer-Which of the following oils may be used with most typical refrigerants
used today?

Hygroscopicity - Answer-The term used to describe the ability to hold moisture is known
as

134a - Answer-A light blue refrigerant container is typically

, POE - Answer-Which oil is shipped in metal containers?

Dew point temperature - Answer-A 400 series refrigerant should use_______ when
calculating superheat.

In the liquid state, but in a controlled metered condition into the suction side - Answer-A
blend should be charged

Polyolester (POE) - Answer-Which of the following lubricants is considered the most
hygroscopic used in stationary refrigeration equipment?

Chlorine - Answer-The main chemical that harms the ozone layer is

502 - Answer-What refrigerant was mainly used in low temp refrigeration before HFC
404a was created?

Perform a pump out procedure as per the unit's operating instructions - Answer-When
switching from one refrigerant type to another you should do what?

True - Answer-A working system may result in a quicker recovery rate by allowing it to
operate and purge liquid directly into the recovery cylinder.

More than 80% full - Answer-A recovery cylinder should never be filled

Recovery - Answer-The removal of refrigerant in any state from a system is called

42 pounds - Answer-Which of the following would be a correctly filled "30 pound"
recovery cylinder if it weighs 18 pounds when empty?

As long as it meets AHRI standard 700 - Answer-Refrigerant can be resold to a new
owner if it is

100% of total charge - Answer-How much can a refrigeration system containing 18
pounds of refrigerant legally leak annually according to EPA rules?

There is no limitation to putting refrigerant back into the same system as long as it is not
contaminated - Answer-Recovered refrigerant cannot be placed back into the system it
has been recovered from unless

Condition of recovered refrigerant - Answer-To determine the full weight of a recovery
cylinder, which of the following IS NOT required to be known

False - Answer-It is still necessary to recover the entire refrigerant when a section of the
system can be isolated with service valves

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 lectknancy. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $15.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79271 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$15.49
  • (0)
  Add to cart