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Chapter 12

System Evacuation

QuestionAnswer
deep vacuum the term used to describe a vacuum that is in the 50–250 micron range
dehydrating the removal of water vapor and moisture from a system during the evacuation process
evacuation the process of removing moisture and noncondensable gases from an air conditioning system prior to startup and charging
micron gauge the test instrument used to measure the level of vacuum in an air conditioning system
noncondensable gas any gas that is unable to condense at the pressures and temperatures normally encountered in air conditioning and refrigeration systems
noncondensable gases that will not change from a vapor to a liquid within the normal pressure ranges commonly found in air conditioning and refrigeration systems
sludge organic solids made up of moisture, acid, and refrigerant oil
two-stage rotary vacuum pump vacuum pump that is made up of two rotary pumps where the outlet of one pump is the inlet of the second
vacuum the condition that is present when the pressure in a vessel is below atmospheric pressure, 0 psig
vacuum pump piece of equipment used to reduce the pressure in an air conditioning system during the evacuation process
vacuum pump oil oil specially designed for use in vacuum pumps
Created by: DHeptner
 

 



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