ESCO Light Commercial Refrigeration EXAM
with Complete Solutions
In a dry type (direct expansion) evaporator, liquid refrigerant must boil away as close to the end
of the coil as possible in order to: ✔️✔️
The difference between the temperature of the refrigerant boiling in the evaporator and the
temperature at theevaporator outlet is known as: ✔️✔️
An expansion device that is stuck open will cause: ✔️✔️
When measuring evaporator superheat on a commercial system that has a long suction line,
the pressure reading should be taken at the: ✔️✔️
Superheat measurements are best taken: ✔️✔️
Atechnician is checking the superheat on a multi-circuit evaporator and finds one of the circuits
has a superheat that is higher than the others. This could be caused by: ✔️✔️
A TEV with an external equalizer is used on: ✔️✔️
Dry type evaporators operate most efficiently with a superheat setting of approximately:
✔️✔️
An evaporator used to chill liquids si operating with a normal superheat setting, but the system
is not cooling the product properly. Which of the following is the most likely cause? ✔️✔️
, What time interval is required between each superheat adjustment? ✔️✔️
Alow temperature evaporator used for cooling space or product refrigeration: ✔️✔️
Some special applications use aflooded evaporator (operated full of refrigerant). nI order to
maintain the proper level of liquid refrigerant, a
type metering device is used. ✔️✔️
A properly functioning condenser will first; ✔️✔️
The effect of an inefficient water cooled condenser will; ✔️✔️
The refrigerant condensing temperature in a water cooled condenser is normally about
higher than the leaving water. ✔️✔️
The refrigerant in an air cooled condenser will normally condense at approximately
higher temperature than the air passing over it. ✔️✔️
Workable head pressure during periods of lowambient temperature can be achieved by using;
✔️✔️
Cooling towers that pass air over water to remove system heat are limited in capacity by:
✔️✔️
Parallel compressors often referred to as a rack system may use; ✔️✔️
The major difference between a cooling tower and an evaporative condenser is: ✔️✔️
with Complete Solutions
In a dry type (direct expansion) evaporator, liquid refrigerant must boil away as close to the end
of the coil as possible in order to: ✔️✔️
The difference between the temperature of the refrigerant boiling in the evaporator and the
temperature at theevaporator outlet is known as: ✔️✔️
An expansion device that is stuck open will cause: ✔️✔️
When measuring evaporator superheat on a commercial system that has a long suction line,
the pressure reading should be taken at the: ✔️✔️
Superheat measurements are best taken: ✔️✔️
Atechnician is checking the superheat on a multi-circuit evaporator and finds one of the circuits
has a superheat that is higher than the others. This could be caused by: ✔️✔️
A TEV with an external equalizer is used on: ✔️✔️
Dry type evaporators operate most efficiently with a superheat setting of approximately:
✔️✔️
An evaporator used to chill liquids si operating with a normal superheat setting, but the system
is not cooling the product properly. Which of the following is the most likely cause? ✔️✔️
, What time interval is required between each superheat adjustment? ✔️✔️
Alow temperature evaporator used for cooling space or product refrigeration: ✔️✔️
Some special applications use aflooded evaporator (operated full of refrigerant). nI order to
maintain the proper level of liquid refrigerant, a
type metering device is used. ✔️✔️
A properly functioning condenser will first; ✔️✔️
The effect of an inefficient water cooled condenser will; ✔️✔️
The refrigerant condensing temperature in a water cooled condenser is normally about
higher than the leaving water. ✔️✔️
The refrigerant in an air cooled condenser will normally condense at approximately
higher temperature than the air passing over it. ✔️✔️
Workable head pressure during periods of lowambient temperature can be achieved by using;
✔️✔️
Cooling towers that pass air over water to remove system heat are limited in capacity by:
✔️✔️
Parallel compressors often referred to as a rack system may use; ✔️✔️
The major difference between a cooling tower and an evaporative condenser is: ✔️✔️
