Troubleshooting- Oil Problems & Refrigerant Problems
Authored by Andgel Thomas
Specialty
12th Grade
Used 6+ times
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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common cause of overheating in HVAC/R systems?
Dirty condenser coils
Excessive lubrication
High oil temperature
Low refrigerant levels
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can result from an oil shortage in HVAC/R systems?
Increased efficiency
Loss of lubrication
Improved cooling
Reduced wear on components
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a symptom of excess oil in a refrigeration system?
Compressor overheating
Oil slugging
Low suction pressure
High superheat
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does trapped oil in a refrigeration system indicate?
Proper oil circulation
Excessive lubrication
Low refrigerant levels
Faulty component or piping design
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common contaminant in refrigeration oil?
Moisture
Dust
Refrigerant
Excess oil
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can cause low suction pressure and high superheat?
Excessive lubrication
Refrigerant leaks
High ambient temperatures
Properly sized equipment
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a potential cause of excessive discharge pressures?
Properly functioning compressor
Lack of condenser cooling
Low refrigerant levels
Dirty evaporator coils
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