EPA 608 TYPE III ALL UPDATED 2026 QUESTIONS
AND ANSWERS SURE A+
✔✔Refrigerant-11 at 14.7 PSIA will boil at about: _________.
a) 60.3 degrees F
b) 74.5 degrees F
c) 79.7 degrees F
d) 80.2 degrees F - ✔✔b) 74.5 degrees F
✔✔Pressure relief valve must never be: __________.
a) installed in series
b) installed in parallel
c) installed vertically
d) installed horizontally - ✔✔a) installed in series
✔✔Charging refrigerant liquid into a refrigeration system when it is under a 29" HG
vacuum can cause the: ___________.
a) liquid to absorb excess moisture
b) purge unit to operate
c) system water to freeze
, d) refrigerant liquid to freeze - ✔✔c) system water to freeze
✔✔ASHRAE Standard 15 - 1994 requires the use of room sensors and alarms to
detect: __________.
a) refrigerant leaks
b) high levels of ozone
c) refrigerant contamination
d) excessive oxygen levels - ✔✔a) refrigerant leaks
✔✔Commercial and industrial process refrigeration systems must be repaired when the
leak rate exceeds _____ of the charge per year.
a) 5%
b) 15%
c) 20%
d) 35% - ✔✔d) 35%
✔✔Under EPA's regulations, __________ is used to pressurize a low-pressure chiller
for the purpose of opening the system for a non-major repair.
a) adding nitrogen
b) warming the refrigerant
c) adding compressed air
d) adding carbon dioxide - ✔✔b) warming the refrigerant
✔✔A charged low pressure refrigeration system can be efficiently leak checked by:
___________.
a) adding compressed air, since it will be removed from the system by the purging unit
b) operating the purge system
c) adding HCFC-22
d) raising system pressure by heating with circulated hot water or heating blankets -
✔✔d) raising system pressure by heating with circulated hot water or heating blankets
✔✔The existence of air in a low pressure system causes: ____________.
a) low head pressure
b) low suction pressure
c) high head pressure
d) high liquid level - ✔✔c) high head pressure
✔✔An oil sample should be taken when: ____________.
a) a new filter-drier has been installed
AND ANSWERS SURE A+
✔✔Refrigerant-11 at 14.7 PSIA will boil at about: _________.
a) 60.3 degrees F
b) 74.5 degrees F
c) 79.7 degrees F
d) 80.2 degrees F - ✔✔b) 74.5 degrees F
✔✔Pressure relief valve must never be: __________.
a) installed in series
b) installed in parallel
c) installed vertically
d) installed horizontally - ✔✔a) installed in series
✔✔Charging refrigerant liquid into a refrigeration system when it is under a 29" HG
vacuum can cause the: ___________.
a) liquid to absorb excess moisture
b) purge unit to operate
c) system water to freeze
, d) refrigerant liquid to freeze - ✔✔c) system water to freeze
✔✔ASHRAE Standard 15 - 1994 requires the use of room sensors and alarms to
detect: __________.
a) refrigerant leaks
b) high levels of ozone
c) refrigerant contamination
d) excessive oxygen levels - ✔✔a) refrigerant leaks
✔✔Commercial and industrial process refrigeration systems must be repaired when the
leak rate exceeds _____ of the charge per year.
a) 5%
b) 15%
c) 20%
d) 35% - ✔✔d) 35%
✔✔Under EPA's regulations, __________ is used to pressurize a low-pressure chiller
for the purpose of opening the system for a non-major repair.
a) adding nitrogen
b) warming the refrigerant
c) adding compressed air
d) adding carbon dioxide - ✔✔b) warming the refrigerant
✔✔A charged low pressure refrigeration system can be efficiently leak checked by:
___________.
a) adding compressed air, since it will be removed from the system by the purging unit
b) operating the purge system
c) adding HCFC-22
d) raising system pressure by heating with circulated hot water or heating blankets -
✔✔d) raising system pressure by heating with circulated hot water or heating blankets
✔✔The existence of air in a low pressure system causes: ____________.
a) low head pressure
b) low suction pressure
c) high head pressure
d) high liquid level - ✔✔c) high head pressure
✔✔An oil sample should be taken when: ____________.
a) a new filter-drier has been installed
