Evacuation
The evacuation of a system is a method of?
dehydration
What does ODP stand for?
ozone depletion potential
Where is the stratosphere locate from the earth's surface?
10 to 30 miles above
The color code for refrigerant recovery cylinders is?
yellow tops with grey bodies
Which of the following refrigerant has a GWP closest to "1"?
CO2 / R-744
When moisture exists in an operating system which is likely to occur?
Acid will form
Which refrigerant type has no ODP?
HFCs
What is an ozone molecule made of?
3 oxygen atoms
What year was the Montreal Protocol International Treaty adopted ?
1987
How many microns are required by most manufacturers?
500 Microns
When evacuating a system the hoses should be?
short in length & large in diameter as possible
When a refrigerant is made out of these chemicals chlorine fluorine carbon it is called?
CFC
What in refrigerants causes ozone depletion?
chlorine
What year will all HCFC refrigerants be phased out ?
2030
Reusable refrigerant containers under high-pressure must be hydrostatically tested how often ?
Every 5 Years
The low-pressure gauge used to measure the vacuum level is called?
a micron gauge
What type of refrigerant is R-22
HCFC
The ozone layer protects us from what harmful effect of the sun?
ultraviolet radiation
A refillable recovery container can be filled to what capacity?
80% of capacity by weight
Which ASHRAE classification means slightly flammable?
A2L
A system is dehydrated to remove what?
moisture or water vapor
Who regulates section 608 of the clean air act?
EPA
What compound is formed when chlorine merges with ozone?
chlorine monoxide
Who regulates refillable cylinders?
DOT
How much is the fine for releasing refrigerant into the atmosphere?
44,539 per day, per violation.