EPA Type I

A recovery cylinder which is half full of recovered R-22 at normal room temperature (about 75 degrees F), in the absence of non-condensables, will be pressurized to:
a) 250 psig
b) 200 psig
c) 175 psig
d) 130 psig

d) 130 psig

The EPA requires that all appliances must be equipped with a service aperture or other device that is used when adding or removing refrigerant from the appliance. For small appliances, this service port typically is:
a) a straight piece of tubing, called

a) a straight piece of tubing, called the process tube, that is entered using a piercing access valve

Solderless piercing valves should not remain installed on refrigeration systems after completion of repairs because: ________.
a) they are too expensive to remain on every product
b) they tend to leak over time
c) they become loose and vibrate
d) both a a

b) they tend to leak over time

What is the maximum allowable factory charge of refrigerant for Type I appliances?
a) 4 pounds
b) 5 pounds
c) 7 pounds
d) 10 pounds

b) 5 pounds

Large spills of refrigerants can cause suffocation because: __________.
a) they smell strong and make breathing difficult
b) they are lighter than air and cause dizziness
c) they sting the nose and cause sneezing
d) they are heavier than air and displace

d) they are heavier than air and displace oxygen

If a reclamation processing plant is given a recovery tank containing a mixture of refrigerants, they can: ____________.
a) refuse to process the refrigerant and return it
b) agree to destroy the refrigerant, but typically a substantial fee is charged for

b) agree to destroy the refrigerant, but typically a substantial fee is charged for the destruction

The EPA definition of a small appliance includes which of the following?
a) A device manufactured, charged and hermetically sealed in a factory.
b) A device with a charge of 5 pounds or less.
c) Products with compressors under a quarter horsepower
d) Both

d) Both a and b

When using a passive system-dependent recovery method on an appliance with an operating compressor, you should run the (appliance's) compressor: __________.
a) on 240 volts while recovering the refrigerant from the capillary tube
b) for several minutes, s

c) and recover the refrigerant from the high side

At high temperatures, (i.e. open flames, glowing metal surfaces, etc.) R-12 and R-22 can decompose to form: ________.
a) hydrazine gas
b) helium gas
c) phosgene gas
d) all of the above will be formed

c) phosgene gas

A passive system-dependent recovery device for small appliances: ________.
a) never needs the use of a pump, compressor or heat to recover the refrigerant
b) must use a pressure relief device when recovering refrigerant
c) captures refrigerant in a non-pr

c) captures refrigerant in a non-pressurized container

If you are recovering refrigerant from a frost-free refrigerator, you should: _________.
a) cool the compressor to force liquid out of the high side
b) heat the recovery cylinder to vaporize liquid refrigerant
c) turn on the defroster heater to vaporize a

c) turn on the defroster heater to vaporize any trapped liquid

Recovery or recycling equipment which was manufactured AFTER November 15, 1993 and is used to recover refrigerant from small appliances prior to disposal of the small appliances must be used to: ______________.
a) recover 95% of the refrigerant from the a

d) both b and c

A recovery cylinder which is half full of recovered R-12 at normal room temperature (about 75 degrees F), in the absence of non-condensables, will be pressurized to: ______.
a) 30 psig
b) 75 psig
c) 150 psig
d) 200 psig

b) 75 psig

A standard vacuum pump designed specifically for evacuation and dehydration can: ________.
a) be used alone as a self-contained (active) recovery device
b) never be used as a recovery device in combination with a pressurized container
c) be used alone as

b) never be used as a recovery device in combination with a pressurized container

Refrigerant recovery devices must be equipped with low loss fittings. Low loss fittings are used to: ___________.
a) connect the recovery device to an appliance and which are manually closed (or which close automatically) when they are disconnected, to pr

a) connect the recovery device to an appliance and which are manually closed (or which close automatically) when they are disconnected, to prevent loss of refrigerant from hoses

Recovery equipment used for the service and repair of small appliances must be certified by an EPA-approved laboratory if the recovery equipment was manufactured after: ________.
a) May 15, 1993
b) June 15, 1993
c) July 15, 1993
d) November 15, 1993

d) November 15, 1993

On a small appliance with an operating compressor that has a completely plugged capillary tube, what is the minimum number of access valves that are needed to evacuate the refrigerant?
a) Only one access valve, on the low side of the system.
b) Only one a

b) Only one access valve, on the high side of the system.

If a large leak of refrigerant occurs in an enclosed area and no self-contained breathing apparatus is available, then the technician should: ________.
a) put on a dust mask and butyl lined gloves, then try to stop the leak
b) put on a dust mask, use a le

c) vacate and ventilate the spill area

Small amounts of refrigerant have no odor, therefore if a pungent odor is detected during a system recovery and/or repair: __________.
a) it is the characteristic smell of the oil
b) the refrigerant should not be recovered
c) a compressor burn-out has lik

c) a compressor burn-out has likely occurred

If the EPA regulations should change after a technician becomes certified: _______.
a) the technician certification is grandfathered for six months to allow time for taking the recertification exam
b) a new certification test must be taken within 90 days

d) it is the technician's responsibility to comply with any future changes in the law

It is an EPA regulation that any person who opens an appliance for maintenance, service or repair must have at least one self-contained recovery machine available at their place of business. The only exceptions to this rule are persons working on: _______

a) small appliances

When using nitrogen, the nitrogen tank should always be equipped with a: ________.
a) regulator
b) level sensor
c) yellow top
d) hand valve

a) regulator

A refrigerant that can be used as a direct service "drop-in" substitute for R-12 in a small appliance is: _________.
a) R-410A
b) R-134a
c) R-141b
d) none of the above

d) none of the above

Whenever nitrogen is used to pressurize or blow debris out of the system, nitrogen: ________.
a) must be recovered
b) can be vented
c) nitrogen should never be used
d) nitrogen can only be used if mixed with R-22

b) can be vented

If you install an access fitting onto a sealed system:
a) the fitting should be leak tested before proceeding with recovery
b) it is not necessary to leak test the access fitting
c) the fitting does not need to be leak tested until the total repair is com

a) the fitting should be leak tested before proceeding with recovery

Recovery devices that were manufactured before November 15, 1993 and are used for recovery of refrigerant from small appliances must be capable of: ____________.
a) recovering 90% of the refrigerant whether or not the compressor is operating or achieving

a) recovering 90% of the refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993

In the event of a large release of R-12 or R-22 in a contained area, which of the following is true?
a) Safety goggles and lined butyl gloves are all that is needed.
b) Self-contained breathing apparatus (SCBA) or leaving the area is required.
c) Respirat

b) Self-contained breathing apparatus (SCBA) or leaving the area is required.

A Very-High-Pressure appliance is one that uses a refrigerant with a liquid phase saturation pressure above 355 psia at 104 degrees F. This definition includes but is not limited to appliances using which of the refrigerants listed below?
a) R-23
b) R-13

d) All of these.

Which can cause excessive pressure on the high side of an active self-contained recovery device?
a) A closed recovery tank inlet valve.
b) Excessive air or other non-condensables in the recovery tank.
c) A closed recovery tank outlet valve.
d) Either choi

d) Either choice a or b.

When recovering refrigerant from a household refrigerator whose compressor does not run, it is recommended that the low side and high side access valves be installed because: __________.
a) it can enhance the speed of recovery
b) it may be necessary to ac

d) both a and b

A recovery cylinder which is half full of recovered R-500 at normal room temperature (about 75 degrees F), in the absence of non-condensables, will be pressurized to: _______.
a) 30 psig
b) 75 psig
c) 95 psig
d) 120 psig

c) 95 psig

The EPA Section 608 certification must be renewed every: __________.
a) 2 years
b) 3 years
c) 10 years
d) the EPA certification has no expiration date

d) the EPA certification has no expiration date

The sale of CFC and HCFC refrigerants is:
a) banned
b) limited by law to equipment owners of commercial equipment
c) allowed only if the quantity is less than 5 pounds
d) restricted to technicians who are EPA certified in refrigerant recovery

d) restricted to technicians who are EPA certified in refrigerant recovery

When using a passive system-dependent recovery process, you should access both the high and low side of the system for the refrigerant recovery if: __________.
a) there is a leak in the system
b) the system's compressor operates normally
c) the system's c

d) the system's compressor does not run

Which of the following refrigerants must be recovered with equipment currently regulated by the equipment certification requirements of the EPA under Section 608?
a) sulfur dioxide
b) methyl chloride
c) methyl formate
d) R-12

d) R-12

Whenever nitrogen is used to pressurize or blow debris out of the system: _________.
a) only nitrogen vapor should be used
b) only liquid nitrogen should be used
c) either liquid or vapor nitrogen can be used
d) nitrogen can only be used if mixed with R-2

a) only nitrogen vapor should be used

A recovery cylinder which is half full of recovered R-410A at 90 degrees F, in the absence of non-condensables, will be pressurized to: _________.
a) 100 psig
b) 200 psig
c) 300 psig
d) 400 psig

c) 300 psig

When using a graduated charging cylinder, any refrigerant that is vented from the charging cylinder: _________.
a) does not need to be recovered
b) must be recovered
c) is considered a de minimus release
d) none of the above

b) must be recovered

Portable refillable tanks or containers used to ship recovered refrigerants must meet what standard(s)?
a) Department of Transportation
b) Community Right-To-Know Act
c) Underwriters Laboratories
d) All of the above

a) Department of Transportation

When R-500 is recovered from an appliance, it: __________.
a) can be mixed with either R-22 or R-12 during the recovery process, since R-500 is actually a mixture of the two refrigerants
b) can be mixed with R-12 but not R-22 during the recovery process
c

d) must be recovered into its own recovery vessel (or a recovery cylinder that already contains some R-500)

A standard vacuum pump designed specifically for evacuation and dehydration can: __________.
a) be used alone as a self-contained (active) recovery device
b) be only used as a recovery device in combination with a non-pressurized container
c) be used alon

b) be only used as a recovery device in combination with a non-pressurized container

Which of the following are part of the EPA's recommended safe work practices?
a) Wear safety glasses or goggles when working with any compressed gases.
b) Wear a respirator when working with any refrigerant.
c) Wear butyl-lined gloves when connecting/disc

d) Both a and c.

When servicing a small appliance with a leak: _________.
a) it is mandatory to repair the leak within 30 days
b) it is mandatory to repair the leak if more than 35% of the charge escapes within a 12 month period
c) it is not mandatory to repair the leak b

c) it is not mandatory to repair the leak but do so whenever possible

Which of the following is not a Type I appliance?
a) An MVAC-like system that holds three pounds of R-12
b) A water cooler that holds 13 ounces of R-12
c) A food freezer that holds 22 ounces of R-22
d) A dehumidifier with 7 ounces of R-500

a) An MVAC-like system that holds three pounds of R-12

When transporting refrigerants, DOT (Department of Transportation) Regulation number 49 CFR requires _________ to be recorded on the shipping papers for hazard class 2.2, Nonflammable Compressed Gases.
a) volume of each cylinder
b) total cubic feet of eac

c) the number of cylinders of each gas

To avoid accidental removal of liquid refrigerant when recovering vapor from the system, using a self-contained (active) recovery device that cannot handle liquid refrigerant, you should draw vapor from the: _______.
a) capillary tube
b) low side
c) high

c) high side

Piercing-type valves should only be used on which of the following tubing materials?
a) Copper
b) Aluminum
c) Steel
d) Both a and b

d) Both a and b

If R-12 or R-22 are exposed to high temperatures (from open flames or glowing hot metal surfaces for example), these refrigerants can decompose to form: __________.
a) hydrochloric and hydrofluoric acids
b) sulfuric and phosphoric acids
c) boric and chrom

a) hydrochloric and hydrofluoric acids

Which refrigerants can be mixed?
a) R-12 and R-134a
b) R-12 and R-500
C) R-22 and R-410A
d) Refrigerants can never be mixed.

d) Refrigerants can never be mixed.

Why is it important to obtain an accurate pressure reading of refrigerant inside a recovery cylinder?
a) The pressure reading along with a temperature reading can indicate if there is excessive air or other non-condensables in the cylinder.
b) The pressur

a) The pressure reading along with a temperature reading can indicate if there is excessive air or other non-condensables in the cylinder.

Which of the refrigerants listed below should be recovered with current EPA-approved recovery devices?
a) Ammonia
b) Hydrogen
c) Water
d) None of the above need to be.

d) None of the above need to be.

Prior to shipping any used refrigerant it is necessary to: ___________.
a) properly label the refrigerant container
b) properly complete shipping paperwork
c) check that the refrigerant container meets DOT standards
d) all of the above

d) all of the above

When checking for the existence of non-condensable gases inside a recovery cylinder, why is it proper procedure to allow the temperature of the cylinder to stabilize at room temperature before taking a pressure reading?
a) To prevent safety valves from pu

d) Because any comparison to a pressure-temperature chart is only valid if both the pressure and temperature of the refrigerant are stable.

Recovery devices that were manufactured before November 15, 1993 and are used for recovery of refrigerant from small appliances must be capable of: ___________.
a) recovering 80% of the refrigerant whether or not the compressor is operating or achieving a

a) recovering 80% of the refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993

EPA regulations require the capture of at least 80% of the refrigerant from a small appliance with a non-operating compressor if the technician is using: _____________.
a) a system-dependent (passive) recovery unit
b) a self-contained (active) recovery un

c) either (active or passive) type of recovery unit

The sale of refrigerants is: ___________.
a) banned
b) limited by law to equipment owners
c) allowed only if there is proof of need
d) restricted to technicians who are certified in refrigerant recovery

d) restricted to technicians who are certified in refrigerant recovery

According to the EPA, which recovery equipment maintenance practice(s) should be performed on a regular basis?
a) Check recovery device for refrigerant leaks.
b) Check vacuum pump for any leaks.
c) Check pump amperage draw of recovery device.
d) All of th

a) Check recovery device for refrigerant leaks.

Technicians with a Type I small appliance certification are certified to recover refrigerant during the maintenance, service or repair of: ________.
a) small unitary air-conditioning systems with 7 pounds or less of refrigerant
b) packaged terminal air co

b) packaged terminal air conditioners ("PTACs") with 5 pounds or less of refrigerant

A refrigerant that can be used as a direct service "drop-in" substitute for R-22 in a small appliance is: __________.
a) R-410A
b) R-134a
c) R-141b
d) none of the above

d) none of the above

When you connect your service manifold to check system pressures, it's always a good idea to: _________.
a) release refrigerant to smell for acid
b) use equipment such as hand valves or self-sealing hoses to minimize any release
c) recover refrigerant and

b) use equipment such as hand valves or self-sealing hoses to minimize any release

Anyone who recovers refrigerant during the maintenance, service or repair of small appliances must be certified as either a Universal Technician or a:
a) Type I Technician
b) Type II Technician
c) Type III Technician
d) Core certified Technician

a) Type I Technician

When recovering refrigerant into a non-pressurized container from a refrigerator with an inoperative compressor: ___________.
a) it is only necessary to recover as much refrigerant as will naturally flow out of the system
b) it is not necessary to recover

d) it is necessary to heat and strike the compressor with a rubber mallet

For which of the following refrigeration system/appliances would it be permissible to use a passive recovery device for refrigerant recovery?
a) A centrifugal air conditioner.
b) A reciprocating chiller.
c) A single compressor, large commercial walk-in re

d) A domestic refrigerator.

When using any equipment or servicing any system that has schraeder valves, it is "critical" to: ____________.
a) inspect the schraeder valve core for bends and breakage
b) replace any damaged schraeder valve core to prevent leakage
c) and cap the schraed

d) all of the above

When using ___________, it is essential to take extra measures (such as heating or striking the compressor), to help release trapped refrigerant from the compressor oil.
a) an active self-contained recovery device
b) passive system-dependent recovery devi

c) passive system-dependent recovery devices on a small appliance with a non-operating compressor

Before beginning a refrigerant recovery procedure it is ALWAYS necessary to: ________.
a) allow the system to stabilize
b) determine the type of refrigerant in the system
c) move the system to an outdoor location
d) disconnect the appliance from its power

d) disconnect the appliance from its power source

Which of the following refrigerants is most commonly used as a replacement for R-12 in new household refrigerators?
a) R-123
b) R-24
c) R-141a/141b blend
d) R-134a

d) R-134a

After installing and opening a piercing access valve, if the system is ______ do not begin the recovery procedure.
a) 0 psig
b) 15 psig
c) 30 psig
d) 40 psig

a) 0 psig