Question 1

What is a check valve?

Accepted Answer

A check valve is a d...

Question 2

EPR valves are also referred to as ____ valves.

Accepted Answer

A)   DRP
B)   ORC
C)   ORN
D)   ORIE) B) and D)
F) C) and D)

Question 3

The one-time relief valve is caused to relieve by ____________________.

Accepted Answer

The answer of The one-time relief valve is caused to...

Question 4

Two-temperature operation is desirable when more than one evaporator is used with a compressor .

Accepted Answer

A) True 
 B)False

Question 5

Automatic pumpdown systems are equipped with a(n) ____________________ to prevent refrigerant from reaching the evaporator .

Accepted Answer

The answer of Automatic pumpdown systems are equipped with a(n)...

Question 6

Technician "A" says that a multi-evaporator system equipped with three evaporators (one high temperature, one medium temperature, and one low temperature)  will use one evaporator pressure regulator and two flow check valves. Technician "B" says that the crankcase pressure regulator is used to keep the low-temperature compressor from overloading on a hot pulldown. Which of the following statements is correct?

Accepted Answer

A)   Technician "A" is correct. Technician "B" is correct.
B)   Technician "A" is correct. Technician "B" is incorrect.
C)   Technician "A" is incorrect. Technician "B" is correct.
D)   Technician "A" is incorrect. Technician "B" is incorrect.E) B) and C)
F) A) and D)

Question 7

____ are snap-acting valves that open and close very fast when the electrical energy is applied to the coil .

Accepted Answer

A)   Contactors
B)   Condensers
C)   Relays
D)   Solenoid valvesE) A) and B)
F) B) and D)

Question 8

The refrigeration compressor motor can be operated at about ____% over its rated capacity without harm during the pulldown .

Accepted Answer

A)   5
B)   10
C)   15
D)   20E) C) and D)
F) B) and D)

Question 9

Frequently on smaller condensing units, one fan will run continuously and the other fan will be cycled on and off with a(n)  ____.

Accepted Answer

A)   ambient temperature controller
B)   ambient pressure valve
C)   thermal expansion valve
D)   thermal control valveE) None of the above
F) C) and D)

Question 10

Two types of relief valves are the spring-loaded valve and the ____________________ valve .

Accepted Answer

The answer of Two types of relief valves are the...

Question 11

What are the two forces that control the EPR valve?

Accepted Answer

The two forces that control th...

Question 12

The ____________________ is a mechanical control that keeps the refrigerant pressure in the evaporator from going below a predetermined point.

Accepted Answer

evaporator pressure-...

Question 13

To protect the compressor during periods of hot pull down, a(n)  ____ valve is used.

Accepted Answer

A)   TXV (thermostatic expansion valve) 
B)   EPR (evaporator pressure regulator) 
C)   CPR (crankcase pressure regulator) 
D)   LAC (low ambient control) E) A) and B)
F) A) and C)

Question 14

Helical oil separators are about 58% efficient in separating oil.

Accepted Answer

A) True 
 B)False

Question 15

Where is the refrigerant sight glass normally located?

Accepted Answer

The refrigerant sight glass is...

Exam 25: Special Refrigeration System Components

EPR valves are also referred to as ____ valves.

Correct Answer
verified

Correct Answer
verified

Where is the refrigerant sight glass normally located?

Correct Answer
verified
The refrigerant sight glass is...
View Answer

What are the two forces that control the EPR valve?

Correct Answer
verified
The two forces that control th...
View Answer

The ____________________ is a mechanical control that keeps the refrigerant pressure in the evaporator from going below a predetermined point.

Correct Answer
verified
evaporator pressure-...
View Answer

Automatic pumpdown systems are equipped with a(n) ____________________ to prevent refrigerant from reaching the evaporator .

Correct Answer
verified

The refrigeration compressor motor can be operated at about ____% over its rated capacity without harm during the pulldown .

Correct Answer
verified

____ are snap-acting valves that open and close very fast when the electrical energy is applied to the coil .

Correct Answer
verified

Two-temperature operation is desirable when more than one evaporator is used with a compressor .

Correct Answer
verified

To protect the compressor during periods of hot pull down, a(n) ____ valve is used.

Correct Answer
verified

Helical oil separators are about 58% efficient in separating oil.

Correct Answer
verified

Two types of relief valves are the spring-loaded valve and the ____________________ valve .

Correct Answer
verified

Frequently on smaller condensing units, one fan will run continuously and the other fan will be cycled on and off with a(n) ____.

Correct Answer
verified

The one-time relief valve is caused to relieve by ____________________.

Correct Answer
verified

What is a check valve?

Correct Answer
verified
A check valve is a d...
View Answer

Exam 25: Special Refrigeration System Components

EPR valves are also referred to as ____ valves.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Where is the refrigerant sight glass normally located?

Correct AnswerverifiedThe refrigerant sight glass is...View AnswerShow Answer

What are the two forces that control the EPR valve?

Correct AnswerverifiedThe two forces that control th...View AnswerShow Answer

The ____________________ is a mechanical control that keeps the refrigerant pressure in the evaporator from going below a predetermined point.

Correct Answerverifiedevaporator pressure-...View AnswerShow Answer

Automatic pumpdown systems are equipped with a(n) ____________________ to prevent refrigerant from reaching the evaporator .

Correct AnswerverifiedShow Answer

The refrigeration compressor motor can be operated at about ____% over its rated capacity without harm during the pulldown .

Correct AnswerverifiedShow Answer

____ are snap-acting valves that open and close very fast when the electrical energy is applied to the coil .

Correct AnswerverifiedShow Answer

Two-temperature operation is desirable when more than one evaporator is used with a compressor .

Correct AnswerverifiedShow Answer

To protect the compressor during periods of hot pull down, a(n) ____ valve is used.

Correct AnswerverifiedShow Answer

Helical oil separators are about 58% efficient in separating oil.

Correct AnswerverifiedShow Answer

Two types of relief valves are the spring-loaded valve and the ____________________ valve .

Correct AnswerverifiedShow Answer

Frequently on smaller condensing units, one fan will run continuously and the other fan will be cycled on and off with a(n) ____.

Correct AnswerverifiedShow Answer

The one-time relief valve is caused to relieve by ____________________.

Correct AnswerverifiedShow Answer

What is a check valve?

Correct AnswerverifiedA check valve is a d...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The refrigerant sight glass is...
View Answer

Correct Answer
verified
The two forces that control th...
View Answer

Correct Answer
verified
evaporator pressure-...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A check valve is a d...
View Answer