Aux 2 Unit 9 Quiz 6

Aux 2 Unit 9 Q6

1 / 10

How should the refrigerant cylinder be positioned for liquid charging?

B) Vertically with the valve up

D) At an angle to prevent liquid charging

C) Horizontally to balance the pressure

A) Upside down to allow liquid withdrawal

2 / 10

What should be done after the liquid charging is complete and the system is running?

D) Turn off the compressor and restart it

A) Close all system valves immediately

B) Check for leaks and monitor the system's performance

C) Increase the refrigerant level further

3 / 10

What is a critical check to perform during the liquid charging process?

D) Increasing the ambient temperature

A) Adjusting the compressor speed to match the charge rate

C) Changing the orientation of the refrigerant cylinder periodically

B) Monitoring system pressure and temperature to avoid overcharging

4 / 10

What is the first safety step to take before beginning the liquid charging process of a refrigeration plant?

C) Increase the system temperature

A) Open all system valves

D) Remove all refrigerant from the system

B) Ensure proper personal protective equipment (PPE) is worn

5 / 10

Why is it important to check the system for leaks before liquid charging?

D) To warm up the compressor

B) To prevent refrigerant from escaping during charging

A) To increase the pressure in the system

C) To reduce cooling efficiency

6 / 10

Before connecting the liquid charging hose, what should be done to ensure system safety?

A) Increase the compressor speed

D) Open the expansion valve fully

C) Confirm that the system is isolated and at rest

B) Verify that the system pressure is above the refrigerant's saturation pressure

7 / 10

What is one way to safely release excess refrigerant if the system is overcharged?

A) Vent it into the atmosphere

D) Increase the system pressure to force it out

C) Drain it into a container

B) Use a refrigerant recovery machine

8 / 10

At what point should the liquid refrigerant be added to the system?

C) When the evaporator is operating

D) After the compressor has been warmed up

A) While the system is running at full capacity

B) When the system is under vacuum

9 / 10

Why must liquid charging be done slowly and carefully?

A) To reduce the noise level in the compressor

C) To increase the charging speed

B) To prevent thermal shock to the compressor

D) To avoid changing the refrigerant state

10 / 10

What type of protective gear is most important during the liquid charging process?

A) Earplugs for noise protection

C) Steel-toe boots

D) High-visibility clothing

B) Gloves and safety goggles for handling refrigerant

Your score is