100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
EPA 608 Type III EXAM QUESTIONS AND ANSWERS 100 % PASS A+ GRADE $7.99   Add to cart

Exam (elaborations)

EPA 608 Type III EXAM QUESTIONS AND ANSWERS 100 % PASS A+ GRADE

 1 view  0 purchase
  • Course
  • EPA 608 Type III
  • Institution
  • EPA 608 Type III

EPA 608 Type III EXAM QUESTIONS AND ANSWERS 100 % PASS A+ GRADE

Preview 3 out of 30  pages

  • October 11, 2024
  • 30
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • EPA 608 Type III
  • EPA 608 Type III
avatar-seller
dennohz2000
EPA 608 Type III EXAM 2024-2025 QUESTIONS AND ANSWERS 100 % PASS A+
GRADE


On a low-pressure chiller with an open-type compressor, the ________ is very susceptible to leaks.



a) chiller tubes

b) shaft seal

c) charging connections

d) shaft bearings - answer>>b) shaft seal



The PRIMARY purpose of a purge unit on a CFC-11 chiller is to: ___________.



a) remove CFCs from the system

b) condense air out of the system

c) condense water out of the system

d) remove non-condensables from the system - answer>>d) remove non-condensables from the system



Which safety precautions should be adhered to for low pressure systems?



a) Do not siphon refrigerant by mouth.

b) Avoid spilling liquid refrigerant on the skin.

c) Use gloves and safety goggles when working with liquid refrigerant.

d) All of the above. - answer>>d) All of the above.



When there is excessive moisture collecting in the purge unit of a low pressure refrigeration system,
this indicates that: _________.

,a) the system was charged with contaminated refrigerant

b) the condenser or chiller barrel tubes are leaking

c) the purge unit is not operating properly

d) the purge unit needs adjustment - answer>>b) the condenser or chiller barrel tubes are leaking



During chiller evacuation, water is circulated to: _________.



a) speed up the recovery process

b) prevent loss of refrigerant to the atmosphere

c) prevent freezing of the water

d) maintain constant refrigerant pressure - answer>>c) prevent freezing of the water



A system does not have to be evacuated all the way to the required level when: __________.



a) the repair is major

b) the repair is followed by an evacuation of the appliance to the environment

c) the appliance is being disposed of

d) leaks in the appliance make evacuation to the prescribed level unattainable - answer>>d) leaks in the
appliance make evacuation to the prescribed level unattainable



What is meant by the term "high efficiency purge unit"?



a) Those purge units which discharge a high percentage of refrigerant with the air which they remove.

b) Those purge units which discharge a low percentage of refrigerant with the air which they remove.

c) Those purge units which draw very little electrical power.

, d) None of the above. - answer>>b) Those purge units which discharge a low percentage of refrigerant
with the air which they remove.



The maximum test pressure for leak testing a low pressure centrifugal is: ________.



a) 0 psig

b) 10 psig

c) 25 psig

d) 50 psig - answer>>b) 10 psig



When recharging a refrigeration system with R-11, what vapor pressure is necessary in the shells
before charging with liquid?



a) 21.1 inches of Hg vacuum

b) 19.7 inches of Hg vacuum

c) 18.1 inches of Hg vacuum

d) 16.9 inches of Hg vacuum - answer>>d) 16.9 inches of Hg vacuum



During the evacuation of a system containing large amounts of moisture, you can prevent freezing of
this moisture by increasing the pressure with ______ gas.



a) nitrogen

b) R-22

c) air

d) oxygen - answer>>a) nitrogen



Both CFC-11 and HCFC-123 chillers require purge units because: ___________.

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 dennohz2000. 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.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67096 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
$7.99
  • (0)
  Add to cart