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Free Practice Quiz Question List

4 Refrigerant Recovery Procedures Online Quiz Questions

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

20 questions
01
Choose one
1 point

A technician must recover a flammable refrigerant. Which equipment-selection decision is appropriate?

  1. A

    Use ordinary recovery equipment if its hoses fit the appliance.

  2. B

    Select equipment specifically designed and approved for the flammable refrigerant.

  3. C

    Use any certified recovery machine, regardless of refrigerant compatibility.

  4. D

    Avoid recovery equipment and vent the refrigerant outdoors.

02
True or false
1 point

A technician servicing stationary refrigeration equipment in the United States may intentionally vent refrigerant if the work is only a repair.

  1. A

    True

  2. B

    False

03
Fill in the blank
1 point

A leak prevents a technician from reaching the required evacuation level in a leaking section. The section must be evacuated to the , not above 0 psig.

04
Choose one
1 point

For a high-pressure appliance with a charge of 200 pounds or more, what endpoint does the stated EPA table specify when the recovery equipment was manufactured on or after November 15, 1993?

  1. A

    0 inches of mercury vacuum (0 psig)

  2. B

    4 inches of mercury vacuum

  3. C

    10 inches of mercury vacuum

  4. D

    The endpoint is always the lowest pressure the machine can reach.

05
Choose all
1 point

Which actions are appropriate when preparing a work area for refrigerant recovery? Select all that apply.

  1. A

    Follow the appliance and recovery-unit manuals.

  2. B

    Work without eye or hand protection if the recovery machine is certified.

  3. C

    Provide ventilation.

  4. D

    Keep ignition sources away when working with flammable refrigerants.

  5. E

    Allow liquid refrigerant to contact skin to check whether it is escaping.

06
Written response
1 point

What is refrigerant called when it has been cleaned for reuse in equipment owned by the same person? Enter the refrigerant-handling term.

07
True or false
1 point

Refrigerant removed from an appliance and stored in a cylinder is necessarily clean and tested.

  1. A

    True

  2. B

    False

08
Fill in the blank
1 point

A recovery machine is not designed to handle liquid refrigerant. For this machine, the technician must use the appropriate -recovery method.

09
Choose all
1 point

While operating a recovery unit, which measurements should a technician monitor? Select all that apply.

  1. A

    System pressure

  2. B

    The refrigerant's color in the appliance sight glass as the sole endpoint measure

  3. C

    Cylinder weight

  4. D

    Whether the cylinder feels cool to the touch

  5. E

    Cylinder pressure

10
Choose one
1 point

A technician suspects that refrigerant in an appliance is mixed or contaminated. How should the technician handle it?

  1. A

    Combine it with a known refrigerant so both can be recovered together.

  2. B

    Keep it segregated and use a recovery and handling process intended for contaminated refrigerant.

  3. C

    Return it to any appliance with a compatible service port.

  4. D

    Vent it if its identity cannot be confirmed.

11
Written response
1 point

Before used refrigerant is generally sold to a new owner, what process must it undergo through an EPA-certified reclaimer? Enter the refrigerant-handling process name.

12
Open ended
1 point

A technician discovers that refrigerant being recovered may be mixed with an unknown substance. Describe how the technician should contain and handle it, including how the cylinder should be identified.

13
Choose one
1 point

A technician is choosing a recovery cylinder for a known refrigerant. Which choice best addresses safe compatibility?

  1. A

    Choose any cylinder that can be connected, even if its pressure rating is unknown.

  2. B

    Use a damaged cylinder if it has enough remaining capacity.

  3. C

    Use a refillable cylinder in good condition that is rated for the refrigerant's pressure and approved for recovery use.

  4. D

    Select a cylinder based only on its empty weight.

14
True or false
1 point

For stationary refrigeration and air-conditioning equipment in the United States, is intentional venting of refrigerant prohibited during service, repair, or disposal?

  1. A

    True

  2. B

    False

15
Choose one
1 point

When setting up a recovery cylinder, which position should a technician use unless the equipment instructions specify otherwise?

  1. A

    Lay it on its side to keep the refrigerant moving.

  2. B

    Tilt it toward the recovery unit during operation.

  3. C

    Keep it upright unless the equipment instructions specify another position.

  4. D

    Position it according to the appliance’s orientation.

16
Choose one
1 point

A recovery cylinder is approaching its allowable fill weight. What should the technician do to prevent overfilling?

  1. A

    Monitor the cylinder’s weight on a scale and stop before its permitted fill limit.

  2. B

    Estimate the fill level from the recovery machine’s run time.

  3. C

    Continue until the cylinder pressure reaches the recovery unit’s maximum rating.

  4. D

    Use the cylinder’s outside temperature as the only fill indicator.

17
Written response
1 point

What is the process called when refrigerant is processed and verified to the applicable purity standard?

18
Choose one
1 point

A recovery unit is not designed to handle liquid refrigerant. Which operating approach is appropriate?

  1. A

    Always use liquid recovery because it is faster.

  2. B

    Use a method appropriate to the appliance and machine, and do not send liquid into equipment not designed for it.

  3. C

    Use vapor recovery only, regardless of the machine’s instructions.

  4. D

    Choose the method based on cylinder pressure alone.

19
Choose one
1 point

A business has recovered refrigerant and plans to use it in a different appliance that it also owns. Which statement is consistent with the handling rules described?

  1. A

    It may be used only in the appliance from which it was removed.

  2. B

    It may be sold to a new owner without further processing.

  3. C

    It may be returned to the same appliance or another appliance owned by the same person.

  4. D

    It must always be reclaimed before any reuse, even by the same owner.

20
Written response
1 point

For a high-pressure appliance with a charge of 200 pounds or more, what vacuum endpoint, in inches of mercury, does the EPA table specify when recovery equipment was manufactured after November 14, 1993?