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2 Evacuation Levels and Verification Online Quiz Questions

Use this free practice quiz with 20 questions to review 2 Evacuation Levels and Verification, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

What does the vacuum reading on a compound manifold gauge indicate?

  1. A

    Absolute pressure relative to a perfect vacuum

  2. B

    Pressure relative to local atmospheric pressure

  3. C

    The cylinder's refrigerant charge by weight

  4. D

    The appliance's pressure relative to standard atmospheric pressure only

02
Fill in the blank
1 point

An appliance requires a recovery endpoint of 10 in. Hg vacuum, but the gauge reads 8 in. Hg vacuum. The reading the required endpoint.

03
Choose one
1 point

For a high-pressure stationary appliance with a full charge below 200 lb, what endpoint does the table specify, regardless of whether recovery equipment was made before or on or after Nov. 15, 1993?

  1. A

    0 in. Hg vacuum only for equipment made before Nov. 15, 1993

  2. B

    0 in. Hg vacuum for either equipment date

  3. C

    4 in. Hg vacuum for either equipment date

  4. D

    10 in. Hg vacuum for either equipment date

04
Written response
1 point

For a low-pressure appliance, the evacuation endpoint is 25 mm Hg measured on what pressure basis?

05
Fill in the blank
1 point

After recovery is stopped at the target and the appliance is isolated, its pressure rises. The technician should .

06
Written response
1 point

For a motor-vehicle A/C recovery cylinder without a float valve, what percentage of gross weighted capacity is the specific limit noted in the material?

07
Choose one
1 point

A medium-pressure stationary appliance has a full charge of 200 lb or more. Recovery equipment was made on or after Nov. 15, 1993. What evacuation endpoint applies?

  1. A

    4 in. Hg vacuum

  2. B

    10 in. Hg vacuum

  3. C

    15 in. Hg vacuum

  4. D

    25 mm Hg absolute

08
Choose all
1 point

Which checks are appropriate when verifying a recovery cylinder for safe use? Select all that apply.

  1. A

    Confirm that it is an appropriate, approved recovery cylinder for the refrigerant and pressure involved, and that it is in acceptable condition.

  2. B

    Identify the cylinder contents and check its label and the manufacturer's limits.

  3. C

    Estimate the amount of refrigerant in the cylinder from pressure alone.

  4. D

    Weigh the cylinder on a suitable scale, account for tare weight, and follow applicable charge and overfill-protection limits.

09
Choose one
1 point

Which group is excluded from the stationary-appliance evacuation table described here?

  1. A

    High-pressure appliances, medium-pressure appliances, and low-pressure appliances

  2. B

    Small appliances, MVACs, and MVAC-like appliances

  3. C

    Appliances with full charges below 200 lb only

  4. D

    Appliances using recovery equipment made before Nov. 15, 1993

10
Choose all
1 point

Which practices support correct verification of an appliance's evacuation endpoint? Select all that apply.

  1. A

    Use a suitable, functioning gauge while the appliance or isolated section is connected to recovery equipment.

  2. B

    Opening the appliance before checking the gauge is acceptable if recovery has run long enough.

  3. C

    Verify that the applicable endpoint has been reached before opening the appliance.

  4. D

    For a low-pressure appliance, use an instrument capable of measuring the required absolute pressure.

11
Choose one
1 point

A very-high-pressure stationary appliance is being recovered. According to the table, what endpoint applies whether the recovery equipment was made before or on or after Nov. 15, 1993?

  1. A

    25 mm Hg absolute

  2. B

    4 in. Hg vacuum

  3. C

    0 in. Hg vacuum

  4. D

    15 in. Hg vacuum

12
Open ended
1 point

Describe a safe, standards-based approach to verifying refrigerant recovery before opening a stationary appliance, then explain how the checks differ when verifying a recovery cylinder.

13
Choose one
1 point

A high-pressure stationary appliance has a full charge of 200 lb or more, and the recovery equipment was made before Nov. 15, 1993. What endpoint does the table specify?

  1. A

    4 in. Hg vacuum

  2. B

    0 in. Hg vacuum

  3. C

    10 in. Hg vacuum

  4. D

    15 in. Hg vacuum

14
Choose one
1 point

A very-high-pressure stationary appliance is being evacuated. Which endpoint does the table specify, regardless of whether the recovery equipment was made before or after November 15, 1993?

  1. A

    0 in. Hg vacuum

  2. B

    4 in. Hg vacuum

  3. C

    10 in. Hg vacuum

  4. D

    25 mm Hg absolute

15
Written response
1 point

The evacuation table has separate columns for recovery equipment made before a certain date and equipment made on or after it. What is that dividing date?

16
Choose one
1 point

A high-pressure stationary appliance has a full charge of 180 lb. The recovery equipment was made on or after November 15, 1993. What evacuation endpoint applies?

  1. A

    0 in. Hg vacuum

  2. B

    4 in. Hg vacuum

  3. C

    10 in. Hg vacuum

  4. D

    15 in. Hg vacuum

17
Written response
1 point

What evacuation endpoint does the table specify for a low-pressure stationary appliance? Enter the value in mm Hg absolute.

18
True or false
1 point

The 80%-by-volume fill condition used in EPA equipment test procedures is a universal field fill limit for every recovery cylinder.

  1. A

    True

  2. B

    False

19
True or false
1 point

True or false: The required evacuation endpoint before opening an appliance is the same as the deeper vacuum used to dehydrate a repaired system before charging.

  1. A

    True

  2. B

    False

20
True or false
1 point

True or false: Appliance age can never affect evacuation requirements or exceptions once the appliance's pressure class and full charge are known.

  1. A

    True

  2. B

    False