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
This is the term used to describe heat removal and release
Refrigeration
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
A recovery device must have what type of fittings?
low loss
These are the four basic components of any refrigeration system
Compressor, Condenser coil, Metering device, and Evaporator coil
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
A service aperture or stub is required on all equipment of what types?
Class I and class II
The boiling point of the refrigerant in a refrigeration system depends on this
Pressure applied to it
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
What is the State of refrigerant leaving the compressor
High pressure High Temperature superheated vapor
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
What is the formula for Superheat ?
SH = Suction line temp - Evap Saturation temp