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ESCO Light Commercial Refrigeration Exam Questions and Answers
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ESCO Light Commercial Refrigeration Exam Questions and Answers
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ESCO Light Commercial RefrigerationEXAM
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: - Question and answers
The difference between the temperature of the refrigerant boiling in the evaporator and
the temperature at theevaporator outlet is known as: - Question and answers
An expansion device that is stuck open will cause: - Question and answers
When measuring evaporator superheat on a commercial system that has a long suction
line, the pressure reading should be taken at the: - Question and answers
Superheat measurements are best taken: - Question and answers
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: -
Question and answers
A TEV with an external equalizer is used on: - Question and answers
Dry type evaporators operate most efficiently with a superheat setting of approximately:
- Question and answers
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? - Question and answers
What time interval is required between each superheat adjustment? - Question and
answers
Alow temperature evaporator used for cooling space or product refrigeration: - Question
and answers
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. - Question and answers
, A properly functioning condenser will first; - Question and answers
The effect of an inefficient water cooled condenser will; - Question and answers
The refrigerant condensing temperature in a water cooled condenser is normally about
higher than the leaving water. - Question and answers
The refrigerant in an air cooled condenser will normally condense at approximately
higher temperature than the air passing over it. - Question and answers
Workable head pressure during periods of lowambient temperature can be achieved by
using; - Question and answers
Cooling towers that pass air over water to remove system heat are limited in capacity
by: - Question and answers
Parallel compressors often referred to as a rack system may use; - Question and
answers
The major difference between a cooling tower and an evaporative condenser is: -
Question and answers
Multiple compressors provide: - Question and answers
Adirty evaporator and subsequent low evaporator pressures will cause: - Question and
answers
he thermostatic expansion valve (TV) maintains a constant__________ in the
evaporator. - Question and answers
What type of ice si made with a commercial cie maker that uses a gear motor and
auger? - Question and answers
Some capillary tube systems take advantage of heat exchange by soldering the
capillary tube to the suction line. In order to obtain the correct superheat reading, it must
be taken: - Question and answers
A_____________is usually required for ultra-low temperature applications. - Question
and answers
A hot gas defrost cycle can be initiated by a: - Question and answers
When the defrost cycle is terminated, the evaporator fans will: - Question and answers
An off-cycle defrost method is often used on evaporators operating at a minimum of; -
Question and answers
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