Aux 2 Unit 9 Quiz 3

Correct Answer:
B) Recharge the system with the appropriate amount of refrigerant

Explanation:
After repairing any leaks, the system should be recharged with the correct amount of refrigerant to restore optimal performance.

Correct Answer:
C) Bubbles or vapor in the sight glass

Explanation:
The presence of bubbles in the sight glass is a common sign of an undercharged system, indicating that the refrigerant flow is not fully liquid.

Correct Answer:
C) Monitoring system pressures and temperatures to confirm proper operation

Explanation:
After recharging, it is essential to monitor system pressures and temperatures to ensure that the system is operating within the correct parameters and has the appropriate refrigerant charge.

Correct Answer:
A) High superheat at the evaporator outlet

Explanation:
High superheat at the evaporator outlet indicates that the refrigerant is fully evaporated before leaving the evaporator, a sign of insufficient refrigerant flow.

Correct Answer:
B) Low suction pressure and reduced cooling efficiency

Explanation:
An undercharged system will have low suction pressure due to insufficient refrigerant and will exhibit reduced cooling capacity because there isn’t enough refrigerant to absorb heat effectively.

Correct Answer:
B) The compressor may overheat and become damaged

Explanation:
An undercharged system can lead to reduced suction pressure and inadequate cooling, causing the compressor to work harder and potentially overheat, leading to damage.

Correct Answer:
B) Check for and repair any refrigerant leaks

Explanation:
The first step in addressing an undercharged system is to identify and repair any leaks to prevent further refrigerant loss before recharging the system.