HVAC 1
What is Atmospheric Pressure?
14.696PSI
This component lowers the pressure & temperature in the refrigeration cycle
Metering Device
N.O
What is normally open
What is a BTU?
British Thermal Unit- The amount of heat required to raise one pound of water one degree Fahrenheit
R-410A, R-22, R-134a
This chart is used to accurately find the correct pressure in correlation to the ambient air
Temperature Pressure Chart
The 3 Gas Law's are?
Boyle's, Charles, & Dalton's
Name any 2 out of the 4 Leak detections
Soap & Bubbles, Halide Torch, Electronic leak detector,& ultraviolet
All Molecular motion stops at what degree Celsius?
-273 Celsius which is -460 Fahrenheit
IN Parallel what stays the same
What is voltage
What do we call 24 volts?
What is control voltage
True or False? When there is Superheat there is liquid...
False
Name the 3 terminals on a Compressor
Common, Start, Run
What must be removed from the condenser unit before starting to braze?
Shrader Valve Pin
The Ground wire on most systems is color-coded as...?
Green
what does PASS mean?
Pull,aim,squeeze sweep
What does EMF stand for?
Electromotive force
A BLANK can remove any type of foreign matter the enters a refrigeration system
What is drier filter
EPA stands for
Environmental protection Agency
To change psig to psia, you must...?
Add 14.696
A "Lower Flammability" refrigerant is in what Safety Group?
A2 or A2L
overload
what is too much current
What is voltage?
what is the the push behind the current
A transformer steps down from ___ to ___
120 to 24
Name the 5 types of Compressors
Scroll, Rotary, Centrifugal, Scroll, & Screw