UPDATED EPA 608//EPA 608
QUIZLET (2023) questions with
correct VERIFIED answers
What are the typical uses of the center port of gauge set?
- CORRECT ANSW-Used during evacuation charging and
recovery procedures.
What color are the gauges on a manifold gauge set? -
CORRECT ANSW-Low pressure is blue High pressure is
red.
What are the typical ranges of pressure measurements
used on the gauges of a manifold gauge set? - CORRECT
ANSW-High side is 0 to 500 PSIG; Low side is 0 to 350
PSIG and 0 to 30 in. Hg below atmospheric pressure.
Is the refrigerant leaving a condenser at a high or low
pressure? Is it a liquid or a gas? - CORRECT ANSW-High
pressure liquid.
Is the refrigerant entering the expansion valve (variable
metering device) a liquid or gas? - CORRECT ANSWLiquid high pressure.
Is the pressure of the refrigerant entering the compressor
high or low? - CORRECT ANSW-Low pressure vapor.
Where in a refrigerant circuit does a liquid boil to absorb
heat? - CORRECT ANSW-In the evaporator.
What system failures require taking an oil sample? -
CORRECT ANSW-A compressor burnout or if the unit has
had a leak.
Is flushing with refrigerant an acceptable tube cleaning
method? - CORRECT ANSW-No.
In addition to preventing and repairing leaks - CORRECT
ANSW-what else should a technician do to conserve
refrigerant? Recover and recycle used refrigerants.
What factors affect the speed of an evacuation? -
CORRECT ANSW-Pump size hose length hose diameter
size of system to be evacuated ambient temperature
suction line size and the amount of moisture in the system.
How should gauge set hoses be sized for use in
evacuating a system? - CORRECT ANSW-Use the
shortest length and the largest diameter possible for the
quickest evacuation. At least as large as the vacuum
pump inlet
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