EPA 608 Exam Practice Questions 1-100 | 2026/2027 |
Answers Correct | With Complete Solutions
_______ makes HFO refrigerants less flammable than HC
refrigerants. Correct Answers Flourine
________ returns refrigerant to new product specifications and
requires chemical analysis to verify the purity to AHRI-700
standards. Correct Answers reclaiming
__________ is an approved refrigerant for new household
refrigerators, freezers, and combination refrigeration/freezers.
Correct Answers R-600a
____________ indicates low charge in a high-pressure system
with a capillary tube. Correct Answers excessive superheat
____________ is the only EPA SNAP approved "drop in"
replacement for
R-22. Correct Answers There are no direct drop-in refrigerant
substitutes
____________ will speed up recovery. Correct Answers
cooling the recovery tank
A comfort-cooling appliance containing 60 pounds of refrigerant
has a significant leak (leaking beyond the applicable leak rate
threshold). You have _______ days to repair the leak and
perform a successful initial leak verification test. Correct
Answers 30
, A hermetic compressor will overheat if operated in a vacuum
because _________. Correct Answers the compressor motor
uses the flow of refrigerant through the compressor for cooling
A hydrostatic tube test kit is used to _______. Correct Answers
find if there is a leak in the tube
A passive system-dependent recovery process _________.
Correct Answers uses a non-pressurized container
A process stub is a ________. Correct Answers straight piece
of tubing that is entered using a piercing access valve
A purge unit is connected to the ______. Correct Answers top
of the condenser
A small appliance is defined as a system that is __________.
Correct Answers manufactured, fully charged, and hermetically
sealed in a factory with a charge of 5 pounds or less
A system is considered dehydrated when _________. Correct
Answers a micron gauge shows you have reached and held a
vacuum of 500 microns or less with the vacuum pump isolated
from the system
A system with a large liquid receiver needs a major system
repair to replace a faulty TXV. When servicing the unit
________. Correct Answers the refrigerant should be recovered
to or isolated in the receiver
Answers Correct | With Complete Solutions
_______ makes HFO refrigerants less flammable than HC
refrigerants. Correct Answers Flourine
________ returns refrigerant to new product specifications and
requires chemical analysis to verify the purity to AHRI-700
standards. Correct Answers reclaiming
__________ is an approved refrigerant for new household
refrigerators, freezers, and combination refrigeration/freezers.
Correct Answers R-600a
____________ indicates low charge in a high-pressure system
with a capillary tube. Correct Answers excessive superheat
____________ is the only EPA SNAP approved "drop in"
replacement for
R-22. Correct Answers There are no direct drop-in refrigerant
substitutes
____________ will speed up recovery. Correct Answers
cooling the recovery tank
A comfort-cooling appliance containing 60 pounds of refrigerant
has a significant leak (leaking beyond the applicable leak rate
threshold). You have _______ days to repair the leak and
perform a successful initial leak verification test. Correct
Answers 30
, A hermetic compressor will overheat if operated in a vacuum
because _________. Correct Answers the compressor motor
uses the flow of refrigerant through the compressor for cooling
A hydrostatic tube test kit is used to _______. Correct Answers
find if there is a leak in the tube
A passive system-dependent recovery process _________.
Correct Answers uses a non-pressurized container
A process stub is a ________. Correct Answers straight piece
of tubing that is entered using a piercing access valve
A purge unit is connected to the ______. Correct Answers top
of the condenser
A small appliance is defined as a system that is __________.
Correct Answers manufactured, fully charged, and hermetically
sealed in a factory with a charge of 5 pounds or less
A system is considered dehydrated when _________. Correct
Answers a micron gauge shows you have reached and held a
vacuum of 500 microns or less with the vacuum pump isolated
from the system
A system with a large liquid receiver needs a major system
repair to replace a faulty TXV. When servicing the unit
________. Correct Answers the refrigerant should be recovered
to or isolated in the receiver
