Aux 2 Unit 9 Quiz 6

Aux 2 Unit 9 Q6

1 / 10

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

A) Earplugs for noise protection

D) High-visibility clothing

B) Gloves and safety goggles for handling refrigerant

C) Steel-toe boots

2 / 10

Why must liquid charging be done slowly and carefully?

C) To increase the charging speed

A) To reduce the noise level in the compressor

B) To prevent thermal shock to the compressor

D) To avoid changing the refrigerant state

3 / 10

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

D) Increase the system pressure to force it out

A) Vent it into the atmosphere

C) Drain it into a container

B) Use a refrigerant recovery machine

4 / 10

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

A) Adjusting the compressor speed to match the charge rate

C) Changing the orientation of the refrigerant cylinder periodically

D) Increasing the ambient temperature

B) Monitoring system pressure and temperature to avoid overcharging

5 / 10

How should the refrigerant cylinder be positioned for liquid charging?

B) Vertically with the valve up

A) Upside down to allow liquid withdrawal

C) Horizontally to balance the pressure

D) At an angle to prevent liquid charging

6 / 10

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

C) Increase the refrigerant level further

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

D) Turn off the compressor and restart it

A) Close all system valves immediately

7 / 10

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

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

A) Increase the compressor speed

8 / 10

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

A) To increase the pressure in the system

B) To prevent refrigerant from escaping during charging

C) To reduce cooling efficiency

D) To warm up the compressor

9 / 10

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

C) When the evaporator is operating

A) While the system is running at full capacity

D) After the compressor has been warmed up

B) When the system is under vacuum

10 / 10

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

D) Remove all refrigerant from the system

C) Increase the system temperature

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

A) Open all system valves

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