8.13 - Practice Questions Set 2

Module: Type II High and Very-High-Pressure Appliances
Format: 25 original EPA 608-style multiple-choice practice questions; one best answer per question
Regulatory basis: Module 8 regulatory material verified August 12, 2026

Instructions

This 25-question set gives slightly more weight to recovery, evacuation, and repair while still sampling all major Type II examination areas.

• Complete the set closed-book when using it as a mock exam.
• Choose the one best answer for each question.
• Do not check 8.15 - Answers and Explanations.md until the set is complete.
• Project readiness target: 22 correct out of 25 on two separate closed-book attempts.

Question 1

A commercial refrigerator is factory-manufactured, factory-charged, hermetically sealed, and contains 4 lb of a high-pressure refrigerant. Which Section 608 certification type normally applies?

A. Type I

B. Type II

C. Type III

D. Section 609 only

Question 2

An appliance uses a refrigerant whose critical temperature is 98°F. Which Type II pressure class applies under the current Section 608 definition?

A. Low pressure

B. Medium pressure

C. High pressure

D. Very high pressure

Question 3

What is the primary function of a suction accumulator in a typical Type II system?

A. Store high-pressure liquid between the condenser and metering device

B. Increase compressor discharge pressure

C. Help prevent bulk liquid refrigerant from entering the compressor

D. Act as the system’s recovery cylinder

Question 4

An electronic detector has already indicated a suspected leak at an accessible brazed joint. Which method is useful for confirming the exact leak at that joint while the system is safely pressurized?

A. Sight-glass observation

B. Bubble leak-detection solution

C. Measuring compressor amperage only

D. Reading the receiver pressure only

Question 5

A dry-nitrogen pressure test shows that system pressure is falling. What does this result establish by itself?

A. The exact leak location

B. That the compressor is burned out

C. That leakage may be present, but the test does not identify the leak location

D. That the system is properly charged

Question 6

An industrial-process refrigeration appliance contains 70 lb of R-22 and is leaking at 31% per year. Repair requires an industrial-process shutdown. Which current timing rule is most relevant after the leak rate has exceeded the applicable trigger?

A. The repair must always be completed within 10 days

B. The shutdown-related repair period is generally 120 days, subject to the rule’s conditions and extensions

C. The appliance may continue leaking indefinitely because it is industrial equipment

D. The historical 35% trigger makes the current repair timetable inapplicable

Question 7

A covered ODS appliance with a full charge above 50 lb loses 130% of its full charge during one calendar year. Which additional current Section 608 requirement is triggered?

A. The appliance automatically becomes Type III

B. Chronic-leaker reporting to EPA by March 1 of the following year

C. The recovery cylinder must be discarded

D. The appliance may be vented because more than one full charge was lost

Question 8

A qualifying commercial-refrigeration appliance contains 18 lb of a regulated HFC and is not within an exclusion. Which current leak-repair framework should be evaluated?

A. AIM Act requirements in 40 CFR § 84.106

B. Section 609 only

C. Type I disposal requirements only

D. The historical 35% Section 608 table

Question 9

A recovery machine was used on a different refrigerant during the previous job. Before changing refrigerants, what should the technician do?

A. Assume the machine is empty because the hoses were disconnected

B. Open the machine to the atmosphere

C. Follow the manufacturer’s clearing, purge/self-clear, or evacuation procedure so residual refrigerant is properly recovered

D. Add the new refrigerant to dilute the old refrigerant

Question 10

What is the BEST way to determine whether a recovery cylinder has enough available capacity for a Type II recovery job?

A. Check the cylinder pressure only

B. Weigh the cylinder and compare its current weight with the allowable fill information

C. Shake the cylinder

D. Judge the cylinder by its exterior temperature

Question 11

A system has an air-cooled condenser on the roof and an evaporator several floors below. Which location can provide an efficient bulk-liquid recovery point when the system design and recovery procedure permit?

A. The compressor motor terminal box

B. The suction accumulator vapor outlet only

C. The liquid line near the evaporator

D. The evaporator drain pan

Question 12

Near the end of recovery, the appliance has become very cold and refrigerant vaporization has slowed. What can controlled warming of the appliance do?

A. Promote vaporization and raise appliance vapor pressure

B. Increase the allowable recovery-cylinder fill

C. Replace the need for a recovery machine

D. Reclaim the refrigerant to a purity standard

Question 13

Why is vapor recovery commonly used after accessible bulk liquid has been removed?

A. Vapor recovery is always faster than liquid recovery

B. Vapor recovery eliminates the need for the required endpoint

C. Vapor recovery allows the recovery cylinder to be overfilled

D. Vapor recovery helps complete refrigerant removal and tends to minimize oil carryover

Question 14

A technician servicing a 300-lb high-pressure appliance selects the 4 in. Hg vacuum Table 1 requirement. Which fact would make that selection consistent with the current table?

A. The appliance itself was manufactured before 1993

B. The recovery/recycling equipment was manufactured or imported before November 15, 1993

C. The appliance contains less than 50 lb of refrigerant at the moment

D. The compressor is operating normally

Question 15

For recovery equipment manufactured on or after November 15, 1993, which TWO Type II conditions share the same 10 in. Hg vacuum requirement?

A. Very high pressure and high pressure below 200 lb

B. High pressure at 200 lb or more and medium pressure below 200 lb

C. High pressure below 200 lb and medium pressure at 200 lb or more

D. Very high pressure and medium pressure at 200 lb or more

Question 16

A leak makes the normal Table 1 level unattainable, but leaking and non-leaking portions can be isolated. What is the correct current approach for portions that will be opened?

A. Evacuate the non-leaking portion to Table 1 and the leaking portion to the lowest attainable level not above 0 psig

B. Stop both portions at 5 psig

C. Vent the leaking portion and evacuate only the non-leaking portion

D. Leave both portions above atmospheric pressure

Question 17

Which pressure limit is associated specifically with the current Section 608 oil-change provision discussed in Module 8?

A. 25 psig

B. 15 psig

C. 0 psia

D. No higher than 5 psig

Question 18

A technician will replace a small liquid-line filter-drier. Which statement is most accurate when deciding whether the work is major?

A. Filter-drier replacement is always major by component name

B. Filter-drier replacement is never major under any condition

C. The filter-drier is not one of the four named major components, so the actual refrigerant-circuit opening size and duration must also be considered

D. Any repair involving a brazed joint is automatically major

Question 19

During compressor replacement, why should a new filter-drier normally remain sealed until close to the time it is installed?

A. Its desiccant can absorb moisture from ambient air

B. It will lose its pressure rating if exposed to room light

C. It must contain liquid refrigerant before brazing

D. It can only be opened while the compressor is running

Question 20

A supermarket rack uses several compressors in parallel. One compressor has been isolated by closing its suction and discharge isolation valves. Which statement is correct?

A. The isolated compressor can still contain refrigerant and must be properly recovered before it is opened

B. The isolated compressor is automatically empty

C. Parallel compressors never require individual recovery

D. Common suction pressure proves the isolated compressor is refrigerant-free

Question 21

A compressor has been off for a long period in cold weather and its crankcase heater has failed. What startup problem becomes more likely?

A. Refrigerant migration into the oil followed by oil foaming at startup

B. The condenser becomes a low-pressure appliance

C. The relief valve becomes a metering device

D. The refrigerant becomes reclaimed

Question 22

A Type II system repeatedly trips its high-pressure safety. What should the technician do?

A. Permanently jumper the high-pressure control

B. Increase the pressure-control setting until the unit stays on

C. Close the discharge valve to reduce flow

D. Stop and diagnose causes such as condenser heat-rejection problems, overcharge, noncondensables, or restrictions

Question 23

A machinery-room refrigerant alarm activates while a technician is nearby. What is the BEST response?

A. Cover the detector so the alarm stops

B. Follow the facility’s alarm, ventilation, and emergency-entry procedure

C. Ignore the alarm if the refrigerant is nonflammable

D. Disable mechanical ventilation

Question 24

Which statement about a refrigeration pressure-relief outlet is correct?

A. It may be plugged whenever the unit is shut down

B. It should be used as the normal means of controlling head pressure

C. It must not be blocked or modified in a way that defeats required relief protection

D. It may be capped during nitrogen testing so the test pressure can rise higher

Question 25

Why is excessive heat exposure especially important to avoid with a recovery cylinder containing a very-high-pressure refrigerant?

A. Higher cylinder temperature can raise refrigerant pressure and increase the stored-energy hazard

B. Heat lowers cylinder pressure to zero

C. Heat increases the cylinder’s allowable fill percentage

D. Heat makes pressure ratings unnecessary

Score

Score: _____ / 25

Readiness target: 22 / 25

Detailed answers and explanations for all three Type II practice sets will be provided in 8.15 - Answers and Explanations.md.