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Free Practice Quiz Question List

4 Refrigerant Recovery and Cylinder Handling Online Quiz Questions

Use this free practice quiz with 20 questions to review 4 Refrigerant Recovery and Cylinder Handling, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

Before recovering refrigerant, what should a technician verify about the recovery setup?

  1. A

    Choose the equipment with the highest pressure rating, regardless of refrigerant compatibility.

  2. B

    Confirm that the machine, hoses, fittings, and cylinder are compatible with the refrigerant and its pressure.

  3. C

    Use any recovery machine if the appliance is small.

  4. D

    Select equipment based only on the appliance’s age.

02
Choose one
1 point

After refrigerant has been recovered from an appliance, what does evacuation do?

  1. A

    Evacuation removes air, moisture, and other noncondensables after refrigerant recovery.

  2. B

    Evacuation transfers refrigerant into a recovery cylinder.

  3. C

    Evacuation adds a measured quantity of refrigerant to the appliance.

  4. D

    Evacuation is another name for cleaning recovered refrigerant.

03
Choose one
1 point

How should a technician determine whether a recovery cylinder is approaching its fill limit?

  1. A

    Estimate how full the cylinder is from pressure alone.

  2. B

    Stop when the cylinder feels heavy enough to handle.

  3. C

    Use the cylinder markings and refrigerant-specific maximum fill weight to control the fill.

  4. D

    Ignore the cylinder’s markings if an overfill shutoff is installed.

04
Choose all
1 point

Select all characteristics that support choosing a suitable recovery cylinder.

  1. A

    It is an authorized, refillable recovery cylinder.

  2. B

    It is a disposable charging cylinder that is otherwise convenient.

  3. C

    Its pressure rating is suitable for the refrigerant.

  4. D

    It has no damage or faulty valve and does not have an expired requalification.

05
Choose all
1 point

A technician is preparing to recover a flammable refrigerant. Select all precautions supported by the procedure.

  1. A

    For a flammable refrigerant, use equipment specifically approved for that refrigerant.

  2. B

    Keep the work area unventilated so refrigerant cannot disperse.

  3. C

    Keep ignition sources away where relevant.

  4. D

    Wear appropriate eye and hand protection.

06
True or false
1 point

True or false: Refrigerant must be cleaned and tested before it can be recovered into an external container.

  1. A

    True

  2. B

    False

07
True or false
1 point

True or false: A technician may use a vacuum pump instead of recovery equipment to remove refrigerant from an appliance.

  1. A

    True

  2. B

    False

08
Written response
1 point

What is the name of the process that uses a vacuum pump to remove air, moisture, and other noncondensables after refrigerant recovery?

09
Written response
1 point

What process adds a measured quantity of the specified refrigerant to a prepared appliance?

10
Fill in the blank
1 point

During recovery, keep different refrigerants and use a , clearly identified cylinder for each refrigerant.

11
Fill in the blank
1 point

When securing a recovery cylinder for storage, protect it from .

12
Open ended
1 point

A technician suspects that refrigerant recovered from an appliance is mixed or contaminated. What should the technician do with it?

13
True or false
1 point

True or false: A technician should follow the recovery-machine manufacturer’s instructions for connecting the setup and carrying out recovery.

  1. A

    True

  2. B

    False

14
Choose one
1 point

Which plan best prepares a recovered-refrigerant cylinder for storage?

  1. A

    Leave the valve unprotected and store the cylinder beside a heat source.

  2. B

    Store the cylinder where it can tip, provided it is labeled.

  3. C

    Identify the refrigerant and contents, protect the closed valve, and secure the cylinder in suitable storage away from heat.

  4. D

    Rely on the cylinder’s pressure rating instead of labeling its contents.

15
Choose one
1 point

After refrigerant has been removed from an appliance, a technician uses a vacuum pump to remove residual air and moisture from the opened circuit. What is this step called?

  1. A

    Evacuation

  2. B

    Recovery

  3. C

    Charging

  4. D

    Reclamation

16
Choose one
1 point

A technician is preparing to recover a flammable refrigerant. Which approach is appropriate?

  1. A

    Use any recovery machine if the hoses fit.

  2. B

    Use a vacuum pump because it avoids handling refrigerant in a cylinder.

  3. C

    Use recovery equipment specifically approved for that refrigerant and follow its additional safety requirements.

  4. D

    Proceed with ordinary equipment if the work area is ventilated.

17
Choose one
1 point

Which cylinder is suitable for recovering refrigerant, assuming it is compatible with the refrigerant?

  1. A

    A disposable charging cylinder that is otherwise undamaged.

  2. B

    An authorized, refillable recovery cylinder with a suitable pressure rating and valid condition.

  3. C

    Any cylinder that can be connected to the recovery machine.

  4. D

    A damaged recovery cylinder if its valve still opens.

18
Choose one
1 point

A technician must prevent overfilling a recovery cylinder. Which method follows the stated procedure?

  1. A

    Place the cylinder on a scale and observe its markings and refrigerant-specific maximum fill weight.

  2. B

    Estimate the fill from cylinder pressure and stop when pressure seems high.

  3. C

    Use the common 80% liquid-volume training limit regardless of the cylinder or refrigerant limits.

  4. D

    Bypass the overfill shutoff if the cylinder has not reached its pressure rating.

19
Written response
1 point

Before recovered refrigerant is sold or transferred to a different owner, what EPA-required process must it undergo?

20
Written response
1 point

A technician suspects that recovered refrigerant is mixed or contaminated. What should the technician do with it before arranging appropriate handling?