100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
EPA 608 CERTIFICATION EXAM $17.99   Add to cart

Exam (elaborations)

EPA 608 CERTIFICATION EXAM

 3 views  0 purchase
  • Course
  • Institution
  • Book

EPA 608 CERTIFICATION EXAM

Preview 2 out of 5  pages

  • September 25, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
avatar-seller
EPA 608 CERTIFICATION EXAM LATEST ACTUAL EXAM
How can you speed up the removal of the refrigerant charge from system? -
ANSWER: Cooling the recovery cylinder to lower its pressure.

How long must an HVAC servicing company keep records for each disposed
appliance with a charge between 5 and 50 lbs? - ANSWER: 3 years (Both answers)

Recovered refrigerant may contain which of the following impurities? - ANSWER:
Acids, Moisture, and Oil

What area of a refrigeration system does oil foaming usually occur? - ANSWER:
Compressor

What is a deep vacuum usually measured in? - ANSWER: Microns

What is the primary water source for a water cooled recovery unit condensing coil? -
ANSWER: Local municipal water supply

What is the state of the refrigerant leaving the receiver in a refrigeration system? -
ANSWER: High pressure liquid

What should be done after reaching the required recovery vacuum on an appliance?
- ANSWER: Wait for at least a few minutes to see if the system pressure rises.

Which of the following CANNOT be used as a reason to extend the appliance repair
deadlines? - ANSWER: A certified service technician is not available.

Which of the following refrigerants would be used in a low-pressure appliance? -
ANSWER: R-123

Which of the following repairs would always be considered "major" under EPA's
regulations? - ANSWER: Replacement of an Evaporator Coil

Which of the following should be replaced if a system is opened for servicing? -
ANSWER: Filter Drier

Which of the following statements about recycling and recovery equipment used for
stationary refrigeration is FALSE? - ANSWER: Purchases of such equipment must be
reported to the EPA.

Your recovery/recycling machine has R-22 refrigerant in it. you now have to recover
refrigerant from an R-410a unit. What must be done before recovery? - ANSWER:
Remove the R-22 from the recovery unit and change filter.

Which refrigerant does NOT contain chlorine? - ANSWER: R-134a

, Which refrigerant(s) must be recovered before opening or disposing of appliances? -
ANSWER: All three listed (HFC's, CFC's, HCFC's)

State and local governments may: - ANSWER: Establish laws that contain stricter
requirements.

HFC refrigerants contain which of the following? - ANSWER: Hydrogen, Fluorine,
Carbon (HFC)

How many ozone molecules can each chlorine atom in the stratosphere destroy? -
ANSWER: 1000,000 Molecules

Which type of refrigerant typically has the lowest global warming potential? -
ANSWER: HFO's (Hydrofluoroolefin)

Which element of a CFC or HCFC molecule causes ozone depletion? - ANSWER:
Chlorine

What characteristic(s) of CFC's and HCFC's make them more likely to reach the
stratosphere than most other compounds containing chlorine? - ANSWER: They do
not dissolve in water or easily break down in ht atmosphere.

A major system repair is being performed on an R-22 appliance. What CANNOT be
done to service the appliance? - ANSWER: Top off unit with R-410a

In which component of a system does the refrigerant change from a high-pressure
vapor to a high-pressure liquid? - ANSWER: Condensor

What must be done before disposing of any appliance containing a CFC,HCFC, or HFC
refrigerant? - ANSWER: Recover the refrigerant

Which process applies to cleaning refrigerant for immediate reuse by oil separation
and single or multiple passes through devices, like replaceable ore filters driers,
which reduce moisture and acidity? - ANSWER: Recycling

Which refrigerant does NOT contain chlorine? - ANSWER: R-134a

A hydrostatic tube test kit will; - ANSWER: Determine if a tube leaks

Charged low-pressure refrigeration machines may be most efficiently leak checked
by; - ANSWER: Adding heat with circulated hot water or heating blankets.

Refrigeration removal from a low-pressure system starts with: - ANSWER: Liquid
Removal

Under what code group of standard 34 does R-123 fall? - ANSWER: B1

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 tutorsection1. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $17.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72042 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
$17.99
  • (0)
  Add to cart