CFESA REFRIGERATION
CERTIFICATION TEST EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026
1. The function of the compressor is : - ANS B. to lower the pressure in the evaporator so that
the refrigerant temperature is lowered below the temperature of the air in the box .
2 . Forced air evaporator coils are commonly used because : - ANS A. they absorb more heat
in less time .
3 . Evaporator A operates with a 5 ° TD and evaporator B operates with a 15⁰ TD . - ANS D.
Box A operates with higher humidity than box B
4 Whenever you re soldering refrigerant lines : - ANS D. B & C
5 . R404A must be charged into a system : - ANS A. In a liquid state
6 . If an evaporator fan motor needs to be replaced it must be replaced with : - ANS C. Any
motor with the exact HP , speed , voltage , mounting and rotation
7 . The fan blade on an evaporator or condenser must be positioned in the housing or shroud so
that : - ANS B. The blade is mounted mid way into the evaporator housing opening or fan
shroud opening on a condenser .
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 8. Which of the following refrigerants is an interim choice for a replacement for R - 12 in a
system that had a leak in the condenser and lost all of its refrigerant ? - ANS C. R - 409A
9 . Which refrigerant is an interim refrigerant choice for a R502 system that had a major leak in
the evaporator - ANS d . R408A
10 . When evacuating a refrigeration system what tool is needed to ensure a good evacuation
and to help inform you if there is any moisture or leaks in the system : - ANS B. Micron gauge
11 . Which refrigerant would you convert a walk in freezer to if replacing the condensing unit on
an R502 system : - ANS B. R404A
12 . Which phrase best describes the proper use for a refrigerated box using a cap tube system ?
- ANS A. Storage freezer
13 . Which is the best example of the definition of a storage box ? - ANS A. A freezer on which
the door is opened 8 times a day
14 . In order to maintain proper temperature under the various loads , a cooler or freezer
located on a front prep line must be equipped with : - ANS C. A thermal expansion valve
15 . A cap tube is ineffective on most commercial refrigeration systems because : - ANS D. it
cannot respond to the refrigerant needs under heavy loads
16 . The sensor bulb on a TEV must be : - ANS C. mounted tight to a clean surface on the
suction line close to the outlet of the coil
17 . An automatic expansion valve does not : - ANS C. react well in situations of heavy loads .
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
CERTIFICATION TEST EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026
1. The function of the compressor is : - ANS B. to lower the pressure in the evaporator so that
the refrigerant temperature is lowered below the temperature of the air in the box .
2 . Forced air evaporator coils are commonly used because : - ANS A. they absorb more heat
in less time .
3 . Evaporator A operates with a 5 ° TD and evaporator B operates with a 15⁰ TD . - ANS D.
Box A operates with higher humidity than box B
4 Whenever you re soldering refrigerant lines : - ANS D. B & C
5 . R404A must be charged into a system : - ANS A. In a liquid state
6 . If an evaporator fan motor needs to be replaced it must be replaced with : - ANS C. Any
motor with the exact HP , speed , voltage , mounting and rotation
7 . The fan blade on an evaporator or condenser must be positioned in the housing or shroud so
that : - ANS B. The blade is mounted mid way into the evaporator housing opening or fan
shroud opening on a condenser .
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, 8. Which of the following refrigerants is an interim choice for a replacement for R - 12 in a
system that had a leak in the condenser and lost all of its refrigerant ? - ANS C. R - 409A
9 . Which refrigerant is an interim refrigerant choice for a R502 system that had a major leak in
the evaporator - ANS d . R408A
10 . When evacuating a refrigeration system what tool is needed to ensure a good evacuation
and to help inform you if there is any moisture or leaks in the system : - ANS B. Micron gauge
11 . Which refrigerant would you convert a walk in freezer to if replacing the condensing unit on
an R502 system : - ANS B. R404A
12 . Which phrase best describes the proper use for a refrigerated box using a cap tube system ?
- ANS A. Storage freezer
13 . Which is the best example of the definition of a storage box ? - ANS A. A freezer on which
the door is opened 8 times a day
14 . In order to maintain proper temperature under the various loads , a cooler or freezer
located on a front prep line must be equipped with : - ANS C. A thermal expansion valve
15 . A cap tube is ineffective on most commercial refrigeration systems because : - ANS D. it
cannot respond to the refrigerant needs under heavy loads
16 . The sensor bulb on a TEV must be : - ANS C. mounted tight to a clean surface on the
suction line close to the outlet of the coil
17 . An automatic expansion valve does not : - ANS C. react well in situations of heavy loads .
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
