CFESA Refrigeration Certification Test EXAM 2025 UPDATE Verified
CFESA Refrigeration Certification Test
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1. 1. The function of the compressor is : B. to lower the pressure in
the evaporator so that the
refrigerant temperature is
lowered below the tem-
perature of the air in the
box .
2. 2 . Forced air evaporator coils are commonly used A. they absorb more heat
because : in less time .
3. 3 . Evaporator A operates with a 5 ° TD and evaporator D. Box A operates with
B operates with a 15⁰ TD . higher humidity than box
B
4. 4 Whenever you re soldering refrigerant lines : D. B & C
5. 5 . R404A must be charged into a system : A. In a liquid state
6. 6 . If an evaporator fan motor needs to be replaced it C. Any motor with the ex-
must be replaced with : act HP , speed , voltage ,
mounting and rotation
7. 7 . The fan blade on an evaporator or condenser must B. The blade is mounted
be positioned in the housing or shroud so that : mid way into the evapo-
rator housing opening or
fan shroud opening on a
condenser .
8. 8. Which of the following refrigerants is an interim C. R - 409A
choice for a replacement for R - 12 in a system that had
a leak in the condenser and lost all of its refrigerant ?
9. d . R408A
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9 . Which refrigerant is an interim refrigerant choice
for a R502 system that had a major leak in the evapo-
rator
10. 10 . When evacuating a refrigeration system what tool B. Micron gauge
is needed to ensure a good evacuation and to help
inform you if there is any moisture or leaks in the
system :
11. 11 . Which refrigerant would you convert a walk in B. R404A
freezer to if replacing the condensing unit on an R502
system :
12. 12 . Which phrase best describes the proper use for a A. Storage freezer
refrigerated box using a cap tube system ?
13. 13 . Which is the best example of the definition of a A. A freezer on which the
storage box ? door is opened 8 times a
day
14. 14 . In order to maintain proper temperature under C. A thermal expansion
the various loads , a cooler or freezer located on a valve
front prep line must be equipped with :
15. 15 . A cap tube is ineffective on most commercial D. it cannot respond to
refrigeration systems because : the refrigerant needs un-
der heavy loads
16. 16 . The sensor bulb on a TEV must be : C. mounted tight to a clean
surface on the suction line
close to the outlet of the
coil
17. 17 . An automatic expansion valve does not :
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C. react well in situations
of heavy loads .
18. 18 . For maximum efficiency the thermal expansion A. 5 degrees
valve superheat for a freezer should be about :
19. 19 . For maximum system efficiency the TEV superheat C. 8-10 degrees
for a cooler should be about :
20. 20 . What type of oil is most commonly used with CFC C. Mineral
refrigerants ?
21. 21 . What type of oil must be used with R404A ? D. Polyolester
22. 22 . What pressure relates to 20 ° F on R404A ? 56.7 psi
23. 23 . What should be the maximum head pressure for 294 psi
a R404A system operating in a 85 ° F ambient temper-
ature ?
24. 24 . A system with R134A is operating at 146 psi head D. the subcooling is 10 °
pressure . The temperature measured four inches out
of the condenser is 100 ° F . The ambient air temper-
ature is 80 ° F .
25. 25 . A system operating with refrigerant R404A has a the superheat is 10 de-
suction pressure of 29 psi . The head pressure is 239 grees
psi . The temperature on the line out of condenser is
85 degrees. The temperature on the suction line at the
outlet of the evaporator is 5 degrees .
26. 26 . An R 404A cooler system using a cap tube system the system may be over-
has a head pressure of 336 psi and the line out of charged
CFESA Refrigeration Certification Test
Questions And Answers | Guaranteed Success!!
Study online at https://quizlet.com/_eebx0q
1. 1. The function of the compressor is : B. to lower the pressure in
the evaporator so that the
refrigerant temperature is
lowered below the tem-
perature of the air in the
box .
2. 2 . Forced air evaporator coils are commonly used A. they absorb more heat
because : in less time .
3. 3 . Evaporator A operates with a 5 ° TD and evaporator D. Box A operates with
B operates with a 15⁰ TD . higher humidity than box
B
4. 4 Whenever you re soldering refrigerant lines : D. B & C
5. 5 . R404A must be charged into a system : A. In a liquid state
6. 6 . If an evaporator fan motor needs to be replaced it C. Any motor with the ex-
must be replaced with : act HP , speed , voltage ,
mounting and rotation
7. 7 . The fan blade on an evaporator or condenser must B. The blade is mounted
be positioned in the housing or shroud so that : mid way into the evapo-
rator housing opening or
fan shroud opening on a
condenser .
8. 8. Which of the following refrigerants is an interim C. R - 409A
choice for a replacement for R - 12 in a system that had
a leak in the condenser and lost all of its refrigerant ?
9. d . R408A
, CFESA Refrigeration Certification Test
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9 . Which refrigerant is an interim refrigerant choice
for a R502 system that had a major leak in the evapo-
rator
10. 10 . When evacuating a refrigeration system what tool B. Micron gauge
is needed to ensure a good evacuation and to help
inform you if there is any moisture or leaks in the
system :
11. 11 . Which refrigerant would you convert a walk in B. R404A
freezer to if replacing the condensing unit on an R502
system :
12. 12 . Which phrase best describes the proper use for a A. Storage freezer
refrigerated box using a cap tube system ?
13. 13 . Which is the best example of the definition of a A. A freezer on which the
storage box ? door is opened 8 times a
day
14. 14 . In order to maintain proper temperature under C. A thermal expansion
the various loads , a cooler or freezer located on a valve
front prep line must be equipped with :
15. 15 . A cap tube is ineffective on most commercial D. it cannot respond to
refrigeration systems because : the refrigerant needs un-
der heavy loads
16. 16 . The sensor bulb on a TEV must be : C. mounted tight to a clean
surface on the suction line
close to the outlet of the
coil
17. 17 . An automatic expansion valve does not :
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C. react well in situations
of heavy loads .
18. 18 . For maximum efficiency the thermal expansion A. 5 degrees
valve superheat for a freezer should be about :
19. 19 . For maximum system efficiency the TEV superheat C. 8-10 degrees
for a cooler should be about :
20. 20 . What type of oil is most commonly used with CFC C. Mineral
refrigerants ?
21. 21 . What type of oil must be used with R404A ? D. Polyolester
22. 22 . What pressure relates to 20 ° F on R404A ? 56.7 psi
23. 23 . What should be the maximum head pressure for 294 psi
a R404A system operating in a 85 ° F ambient temper-
ature ?
24. 24 . A system with R134A is operating at 146 psi head D. the subcooling is 10 °
pressure . The temperature measured four inches out
of the condenser is 100 ° F . The ambient air temper-
ature is 80 ° F .
25. 25 . A system operating with refrigerant R404A has a the superheat is 10 de-
suction pressure of 29 psi . The head pressure is 239 grees
psi . The temperature on the line out of condenser is
85 degrees. The temperature on the suction line at the
outlet of the evaporator is 5 degrees .
26. 26 . An R 404A cooler system using a cap tube system the system may be over-
has a head pressure of 336 psi and the line out of charged
