Question 1

A sight glass that is full of vapor or liquid may look the same.

Accepted Answer

A) True 
 B)False

Question 2

With the entering air to the condenser above 70 ° F, the temperature difference between the outdoor air and the condensing temperature on standard units will be ____.

Accepted Answer

A)   10 ° F to 15 ° F
B)   15 ° F to 20 ° F
C)   20 ° F to 25 ° F
D)   25 ° F to 30 ° FE) B) and C)
F) A) and B)

Question 3

The refrigerated cabinet temperature of a high-temperature refrigeration unit ranges from ____.

Accepted Answer

A)   25°F to 45°F
B)   45°F to 60°F
C)   60°F to 75°F
D)   75°F to 95°FE) All of the above
F) B) and D)

Question 4

In a water-cooled condensing unit/cooling tower combination, the temperature difference of the water through the condenser will be approximately ____.

Accepted Answer

A)   10°F
B)   20°F
C)   30°F
D)   40°FE) C) and D)
F) None of the above

Question 5

If the evaporator and compressor are starved of refrigerant, the condenser will also be starved.

Accepted Answer

A) True 
 B)False

Question 6

Bubbles in the sight glass always indicate refrigerant shortage.

Accepted Answer

A) True 
 B)False

Question 7

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 90°F. Which of the following statements is a logical explanation for the above conditions?

Accepted Answer

A)   reduced water flow through the condenser
B)   water regulating valve stuck in the wide-open position
C)   excess water flow through the condenser
D)   both b and cE) B) and D)
F) B) and C)

Question 8

The process of ice making usually occurs in which temperature range?

Accepted Answer

A)   -10°F to 0°F
B)   0°F to 5°F
C)   5°F to 20°F
D)   20°F to 30°FE) A) and B)
F) All of the above

Question 9

In a 2-ton capillary tube system, the unit does not develop full capacity. Head pressure is high, suction pressure is high, and there is no superheat. What is the problem?

Accepted Answer

The proble...

Question 10

Condensing units located outside that are required to operate year-round must have ____.

Accepted Answer

A)   larger fan motors
B)   CPR valves
C)   all weather protection
D)   head pressure controlE) B) and C)
F) A) and D)

Question 11

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 105°F. Which of the following statements is a logical explanation for the above conditions?

Accepted Answer

A)   reduced water flow through the condenser
B)   scale buildup in the water circuit
C)   excess water flow through the condenser
D)   both a and bE) A) and C)
F) C) and D)

Question 12

Low density vapors entering the compressor will mean low refrigerant flow through the compressor.

Accepted Answer

A) True 
 B)False

Question 13

The water quality required to maintain the water level in the sump is called ____________________.

Accepted Answer

The answer of The water quality required to maintain the...

Question 14

In a 2-ton TX valve system, the unit does not develop full capacity. Head pressure is high, suction pressure is slightly above normal, superheat is normal, and subcooling is above normal. What is the problem?

Accepted Answer

The proble...

Exam 29: Troubleshooting and Typical Operating Conditions for Commercial Refrigeration

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 105°F. Which of the following statements is a logical explanation for the above conditions?

Correct Answer
verified

Low density vapors entering the compressor will mean low refrigerant flow through the compressor.

Correct Answer
verified

If the evaporator and compressor are starved of refrigerant, the condenser will also be starved.

Correct Answer
verified

In a water-cooled condensing unit/cooling tower combination, the temperature difference of the water through the condenser will be approximately ____.

Correct Answer
verified

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 90°F. Which of the following statements is a logical explanation for the above conditions?

Correct Answer
verified

In a 2-ton capillary tube system, the unit does not develop full capacity. Head pressure is high, suction pressure is high, and there is no superheat. What is the problem?

Correct Answer
verified
The proble...
View Answer

Condensing units located outside that are required to operate year-round must have ____.

Correct Answer
verified

The refrigerated cabinet temperature of a high-temperature refrigeration unit ranges from ____.

Correct Answer
verified

Bubbles in the sight glass always indicate refrigerant shortage.

Correct Answer
verified

A sight glass that is full of vapor or liquid may look the same.

Correct Answer
verified

In a 2-ton TX valve system, the unit does not develop full capacity. Head pressure is high, suction pressure is slightly above normal, superheat is normal, and subcooling is above normal. What is the problem?

Correct Answer
verified
The proble...
View Answer

The water quality required to maintain the water level in the sump is called ____________________.

Correct Answer
verified

The process of ice making usually occurs in which temperature range?

Correct Answer
verified

With the entering air to the condenser above 70 ° F, the temperature difference between the outdoor air and the condensing temperature on standard units will be ____.

Correct Answer
verified

Exam 29: Troubleshooting and Typical Operating Conditions for Commercial Refrigeration

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 105°F. Which of the following statements is a logical explanation for the above conditions?

Correct AnswerverifiedShow Answer

Low density vapors entering the compressor will mean low refrigerant flow through the compressor.

Correct AnswerverifiedShow Answer

If the evaporator and compressor are starved of refrigerant, the condenser will also be starved.

Correct AnswerverifiedShow Answer

In a water-cooled condensing unit/cooling tower combination, the temperature difference of the water through the condenser will be approximately ____.

Correct AnswerverifiedShow Answer

In a wastewater system, the water entering the condenser is 85°F and the water leaving the condenser is 90°F. Which of the following statements is a logical explanation for the above conditions?

Correct AnswerverifiedShow Answer

In a 2-ton capillary tube system, the unit does not develop full capacity. Head pressure is high, suction pressure is high, and there is no superheat. What is the problem?

Correct AnswerverifiedThe proble...View AnswerShow Answer

Condensing units located outside that are required to operate year-round must have ____.

Correct AnswerverifiedShow Answer

The refrigerated cabinet temperature of a high-temperature refrigeration unit ranges from ____.

Correct AnswerverifiedShow Answer

Bubbles in the sight glass always indicate refrigerant shortage.

Correct AnswerverifiedShow Answer

A sight glass that is full of vapor or liquid may look the same.

Correct AnswerverifiedShow Answer

In a 2-ton TX valve system, the unit does not develop full capacity. Head pressure is high, suction pressure is slightly above normal, superheat is normal, and subcooling is above normal. What is the problem?

Correct AnswerverifiedThe proble...View AnswerShow Answer

The water quality required to maintain the water level in the sump is called ____________________.

Correct AnswerverifiedShow Answer

The process of ice making usually occurs in which temperature range?

Correct AnswerverifiedShow Answer

With the entering air to the condenser above 70 ° F, the temperature difference between the outdoor air and the condensing temperature on standard units will be ____.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
The proble...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The proble...
View Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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