Basic Refrigeration
Name the 3 Gas law's
Daltons Law, Boyles Law, & Charles Law
The current in a _____ circuit goes through every component in the circuit
Series
Name the 3 types of Furnaces
Upflow, Downflow, Horizontal
Purging a system means what?
Flow Nitrogen through the line-sets when brazing in a Furnace or Condenser
What is a BTU?
It's defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit
During a Deep Vacuum, you need to reduce the pressure to ____ Microns
250-500
What is Atmospheric Pressure?
14.696
This Limit Switch protects the furnace from a Flame getting out of Control during Operation
Flow Rollout Switch
The Color of a Recovery Tank is...
Gray Body Yellow Top
The best/most efficient way to charge a system with Refrigerant is what way..
A liquid
Convert 50 psig to psia
50 + 14.696 (15) = 65psia
While the receiver port is closed, blocking off the refrigerant flow, what position must the valve stem be to allow refrigerant to flow freely?
Back-Seated Position
(Page 257)
What are the 3 elements that are needed for combustion?
Heat, O2, & Fuel
Boiling point is ____ degree's
& Freezing Point is ____ degree's
-32 & 212
Where do you find the type of Refrigerant this is used for each service call you are involved with?
Data Nameplate
Name 3 of the 5 main types of Leak Detectors that you would use when searching for a Leak in the system
Halide Leak Detector, Soap & Bubbles, Electronic Leak Detector, Ultraviolet Leak Detector, Ultrasonic Leak Detector
This specific Heat Transfer can be explained as energy actually moving molecule to molecule
Conduction
What is the proper flame color for a Pilot Ignitor?
Dark Blue Bottom w/ Slightly Orange Tips
To remove Refrigerant in any condition from a system and store it in an external container without necessarily testing it or processing it in any way is called what
Recovering Refrigerant
(EPA QUESTION!)
Name the 4 Temperature Scales
Kelvin, Rankine, Fahrenheit, & Celsius
What psi should I have with a ambient temperature of 65 Degree's on a R-410A unit?
185 PSI
To clean Refrigerant by oil separation & single or multiple passes through devices such as replaceable core filter driers, which reduces moisture, acidity & particulate Matter
Recycle Refrigerant
(EPA QUESTION!)
This component is made up of steel sheet metal or aluminized steel and is designed to provide rapid transfer of Heat through to Steel into the Air
Heat Exchanger
There is a tool that is used to Measure Wet-Bulb & Dry-Bulb to determine Humidity levels.. What is it called?
Psychrometer
What is the Date that prevented R-22 from being used in new equipment?
January 1, 2010