Page | 1
FCC HVAC study guide Questions with
Detailed Verified Answers
Q: what is the name of EPA's program that identifies refrigerants
with lower overall risks to human health and the environment?
Ans: the Significant New Alternatives Policy(SNAP) Program.
Q: what is a lawful use of HCFC-22?
Ans: Charging any new system designed for R-407c.
Q: how does cooling occur in a direct expansion vapor
compression refrigeration system?
Ans: when the liquid refrigerant is vaporized.
Q: which process applies to cleaning refrigerant for immediate
reuse by oil separation and single or multiple passes through
devices like replaceable core filter driers which reduce moisture and
acidity?
Ans: recycling
Q: what should the technician review when working with any
solvents chemicals or refrigerants?
Ans: safety data sheets (SDS).
Q: in general which elastomers for use in seals and gaskets are
NOT compatible with HFO refrigerants?
Ans: none
Q: new household refrigerators may NOT be factory charged with?
, Page | 2
Ans: R-600a
Q: a standard vacuum pump designed for evacuation and
dehydration can...
Ans: be used alone as a system dependent recovery device.
Q: which condition requires accessing both the high and low side
of the system for refrigerant recovery.
Ans: when the compressor does not run.
Q: after installation of a field piped split system the unit should
first be pressurized with...
Ans: nitrogen and leak checked.
Q: which leak repair category does the EPA define as the
refrigeration appliances used in the retail food cold storage
warehouse sectors?
Ans: industrial process refrigeration (IPR)
Q: when recovery is first started at what phase is the refrigerant
removed to save recovery time?
Ans: the liquid phase
Q: how can you speed up the removal of the refrigerant charge
from a system?
Ans: cooling the recovery cylinder to lower its pressure.
Q: your recovery/recycling device has R-22 in it and you need to
recover a R-410A unit. what must be done?
Ans: remove the R-22 from the recovery unit and change the filter.
FCC HVAC study guide Questions with
Detailed Verified Answers
Q: what is the name of EPA's program that identifies refrigerants
with lower overall risks to human health and the environment?
Ans: the Significant New Alternatives Policy(SNAP) Program.
Q: what is a lawful use of HCFC-22?
Ans: Charging any new system designed for R-407c.
Q: how does cooling occur in a direct expansion vapor
compression refrigeration system?
Ans: when the liquid refrigerant is vaporized.
Q: which process applies to cleaning refrigerant for immediate
reuse by oil separation and single or multiple passes through
devices like replaceable core filter driers which reduce moisture and
acidity?
Ans: recycling
Q: what should the technician review when working with any
solvents chemicals or refrigerants?
Ans: safety data sheets (SDS).
Q: in general which elastomers for use in seals and gaskets are
NOT compatible with HFO refrigerants?
Ans: none
Q: new household refrigerators may NOT be factory charged with?
, Page | 2
Ans: R-600a
Q: a standard vacuum pump designed for evacuation and
dehydration can...
Ans: be used alone as a system dependent recovery device.
Q: which condition requires accessing both the high and low side
of the system for refrigerant recovery.
Ans: when the compressor does not run.
Q: after installation of a field piped split system the unit should
first be pressurized with...
Ans: nitrogen and leak checked.
Q: which leak repair category does the EPA define as the
refrigeration appliances used in the retail food cold storage
warehouse sectors?
Ans: industrial process refrigeration (IPR)
Q: when recovery is first started at what phase is the refrigerant
removed to save recovery time?
Ans: the liquid phase
Q: how can you speed up the removal of the refrigerant charge
from a system?
Ans: cooling the recovery cylinder to lower its pressure.
Q: your recovery/recycling device has R-22 in it and you need to
recover a R-410A unit. what must be done?
Ans: remove the R-22 from the recovery unit and change the filter.
