When moisture exists in an operating system, what is most likely to occur? - ANSAcid will form.
What factor(s) affects the speed of evacuation? - ANS1) The size of the equipment being
evacuated.
2)The ambient temperature.
3) The amount of moisture in the system
A system is considered dehydrated when? - ANSThe vacuum indicator shows you have
reached & held the required finished vacuum.
The over-evacuation of a system: - ANSDoes not occur.
The size (capacity) of the vacuum pump & the size of the suction line used will determine what?
- ANSThe length of dehydration time.
A system is dehydrated to do what? - ANSRemove water & water vapor.
To obtain an accurate vacuum reading during system evacuation, the system vacuum gauge
should be located: - ANSAs far from the vacuum pump as possible.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least
what? - ANS0 psig
Never use an open flame to heat a refrigerant tank because? - ANS1) It can result in venting
refrigerant to the atmosphere.
2)The tank may explode, causing serious injury to people nearby.
3) Refrigerant in the tank may decompose, forming a toxic material.
When operating refrigerant recovery or recycling equipment, the following precautions should
always be followed. - ANS1) Wear safety glasses.
2) Wear protective gloves.
3) Follow all safety precautions for the equipment.
The color code for approved refrigerant recovery cylinders is? - ANSYellow tops & gray bodies.
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 Ashley96. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.