EPA II

Before shipping any used refrigerant cylinders, check that the cylinder meets what standards: A Department of Transportation B The Significant New Alternatives Policy (SNAP) C Underwriters Laboratories D All of the above

A

What is the Significant New Alternatives Policy (SNAP) Program? A EPA's program that identifies refrigerants with lower overall risks to human health and the environment. B Covers only CFC and HCFC refrigerants used in residential air conditioning. C Relates to CFC and HCFC refrigerants used in commercial air conditioning. D Covers only CFC and HCFC refrigerants used in industrial process refrigeration.

A

Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? A 1 year B 3 years C 5 years D 7 years

C.

Industrial process refrigeration equipment (IPR) with an annual leak rate of ________% requires repair under EPA regulations. A.) 0 B.) 15 C.) 30 D.) 50

C.) 30

EPA regulations require that all Industrial Process Refrigeration (IPR) systems containing more than 50 pounds of refrigerant MUST be repaired when the annual leak rate exceeds; A.) 10 % B.) 20 % C.) 30 % D.) 40 %

C.) 30 %

Leaks must be repaired on industrial process and refrigeration units with a 50-pound charge or greater when the annualized leak rate reaches _____ or more. A.) 10% B.) 20% C.) 30% D.) 40%

C.) 30%

When dehydrating a system, it should be evacuated to a minimum level of; A.) 30 inches of Mercury B.) 25,000 Microns C.) 500 Microns D.) EPA does not have a requirement

C.) 500 Microns

Which of the following refrigerant has a GWP of "1"? A R-22 B R-134a C R-410A D R-1233zd

D.

Which of the following refrigerants is an HFO? A R-22 B R-134a C R-410A D R-1234ze

D.

It becomes the owners responsibility to maintain records of all refrigerant added to units that contain between 5 and _____ lbs. of refrigerant charge for three years. A.) 15 B.) 20 C.) 35 D.) 50

D.) 50

HFCs ________; A will not damage stratospheric ozone, but have a high GWP. B will damage stratospheric ozone and have a low GWP. C will not deplete stratospheric ozone and have a low GWP. D are only harmful to ground level ozone

A

The condenser _______________________________________ A. changes a high-pressure vapor to a high-pressure liquid. B. changes a low-pressure vapor to a low-pressure liquid. C. changes a high-pressure liquid to a low-pressure liquid. D. changes a low-pressure liquid to a low-pressure vapor.

A

Which of the following has the highest Ozone Depletion Potential? A HFOs B HCFCs C HFCs D CFCs

D

A single chlorine atom can destroy how many ozone molecules? A 100 B 1,000 C 10,000 D 100,000

D.

How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? A $10,000 B $25,000 C $37,000 D $44,539

D.

When recovering refrigerant from a medium-pressure system with more than 200 lbs. of refrigerant, recover to a level of; A.) 0" Hg B.) 4" Hg C.) 10" Hg D.) 15" Hg

D.) 15" Hg

Recover time can be shortened by ________________ A.) Recovering as much liquid as possible in the initial stage. B.) Using short hoses C.) Cooling the recovery tank in ice water. D.) All of the above

D.) All of the above

A major repair as defined by the EPA when replacing the 1.) Condenser fan motor B.) Compressor C.) Evaporator D.) Both B and C

D.) Both B and C

When pressurizing a system with nitrogen you should; A.) never exceed 3.5 times the high side pressure rating. B.) charge through a pressure regulator. C.) install a relief valve in the line downstream from the pressure regulator. D.) Both B and C.

D.) Both B and C

A condition of excessive super heat at the evaporator outlet and the compressor inlet of a A/C system could be an indication of A.) High head pressure B.) A dirty condenser C.) An overcharge situation D.) Low on refrigerant charge

D.) Low on refrigerant charge

A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant must be evacuated (recovered) to a level of; A.) 15 inches of vacuum B.) 10 inches of vacuum C.) 4 inches of vacuum D.) 0 inches of vacuum

D.) O inches of vacuum

All HVAC/R systems must be protected by a; A.) Low-pressure switch B.) High-pressure switch C.) Compressor impedance overload D.) Pressure relief valve

D.) Pressure relief valve

What can be done with a refrigerant trace gas and nitrogen mixture after a system leak is found? A.) Recover the mixture. B.) Recover in a special recovery tank. C.) Recycle the refrigerant back into the system. D.) Release to the atmosphere.

D.) Release to the atmosphere.

Type II classification, as identified by the EPA, applies to what equipment? A.) Small appliances with five (5) lbs. of refrigerant or less B.) Refrigerator, freezers and vending machines C.) Low pressure appliances D.) Split air conditioning systems with five (5) lbs. or more refrigerant charge

D.) Split air conditioning systems with five (5) lbs. or more refrigerant charge

Front seating the three way suction service valve will close the A.) Suction inlet to the valve B.) Gauge access port C.) Gauge access port and suction inlet D.) Access port to the compressor

A.)

The required evacuation level for recovery equipment manufactured after November 15, 1993 with an R-22 charge of less than 200 lbs. is A.) 0 inches Hg B.) 4 inches Hg C.) 10 inches Hg D.) 15 inches Hg

A.) 0 inches Hg

The required evacuation level for recovery equipment manufactured before November 15, 1993 with an R-22 charge of less than 200 lbs. is A.) 0 inches Hg B.) 4 inches Hg C.) 10 inches Hg D.) 15 inches Hg

A.) 0 inches Hg

When using a recovery unit on a system containing 100 lbs. of R-410A it must be evacuated to; A.) 0 inches of Mercury B.) 4 inches of Mercury C.) 10 inches of Mercury D.) 15 inches of Mercury

A.) 0 inches of Mercury

Refrigerant should be recovered from the condenser outlet if the condenser is; A.) Below the receiver B.) Above the receiver C.) On the roof D.) Is leaking

A.) Below the receiver

The chlorine in CFCs and HCFCs; A will dissolve in water. B will not dissolve in water. C will rain out of the atmosphere. D is heavier than air and cannot rise to the stratosphere.

B.

To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical analysis defines; A Recovery B Reclaiming C Reuse D Recycle

B.

Comfort cooling chillers and all other equipment with an annual leak rate of ______% requires repair under EPA regulations A.) 0 B.) 10 C.) 35 D.) 50

B.) 10

A high-pressure appliance containing 210 lbs. of R-407C refrigerant must be evacuated (recovered) to a level of; A.) 15 inches of vacuum B.) 10 inches of vacuum C.) 4 inches of vacuum D.) 0 inches of vacuum

B.) 10 inches of vacuum

A comfort cooling system that contains 50 pounds or more of R-410A is leaking. What will be the new maximum allowable annual leak rate starting in 2019? A.) 5% B.) 10% C.) 15% D.) 20%

B.) 10%

Which of the following is an example of a non-condensable? A.) Moisture B.) Air C.) R-12 D.) R-134a

B.) Air

Recovery equipment must be; A.) CSA approved. B.) Certified by an EPA-approved testing laboratory. C.) Used on all equipment manufactured after July 1, 1995. D.) Used on all equipment manufactured after November 15, 1995.

B.) Certified by an EPA-approved testing laboratory.

EPA regulations state that removal of which component constitutes a "major repair"? A.) Pressure switch B.) Compressor C.) Liquid line drier D.) Evaporator fan motor

B.) Compressor

Self-contained or active recovery equipment; A.) Depends on a special charcoal bag filter. B.) Has its own means to recover refrigerant. C.) Is not capable of reaching the required liquid rates. D.) Requires a vacuum pump rated at more than 3 CFM.

B.) Has its own means to recover refrigerant.

Which of the following refrigerants is classified as a very high-pressure refrigerant? A.) CFC-11 B.) R-744 C.) HCFC-123 D.) R-410A

B.) R-744

The majority of the liquid refrigerant to be recovered will be found in the A.) Condenser B.) Reciever (When applied) C.) Evaporator D.) Both B and C above

B.) Reciever

Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, and water. These refrigerants; A.) Must be recovered. B.) Should not be recovered. C.) Should be stored for later use. D.) Must be pressurized prior to use.

B.) Should not be recovered

Which HC refrigerant is allowed for use in NEW Domestic Small Appliances? A. R-404A B. R-410A C. R-600a D. R-717

C. R-600A

The required evacuation level for recovery equipment manufactured after November 15, 1993 with an R-12 charge of less than 200 lbs. is A.) 0 inches Hg B.) 4 inches Hg C.) 10 inches Hg D.) 15 inches Hg

C.) 10 inches Hg

System-dependent recovery methods may only be used on appliances containing; A.) 20 pounds of refrigerant or less. B.) 18 pounds of refrigerant or less. C.) 15 pounds of refrigerant or less. D.) More than 15 pounds of refrigerant.

C.) 15 pounds of refrigerant or less.

When an appliance containing 50 pounds or more of a regulated refrigerant leaks refrigerant at an annual rate of 125% or more, what must be included on the leak inspections records? A.) Initial verification, verification tests and records of recovered refrigerant from equipment. B.) Quantity of refrigerant sold, procedures performed, date of call, name, address and phone number of manufacturer. C.) Quantity of refrigerant, address of service technician, number of years in HVAC. D.) The amount of refrigerant and addresses only.

A.) Initial verification, verification tests and records of recovered refrigerant from equipment.

What happens to a refrigerant that is heated above the saturation temperature? A.) It remains in the vapor state. B.) It remains in the liquid state. C.) It absorbs moisture at an increased rate. D.) It cools the compressor more efficiently

A.) It remains in the vapor state.

A crankcase heater is often used to prevent refrigerant from mixing with compressor oil during periods of: A.) Low ambient temperature B.) High ambient temperature C.) Low humidity D.) High humidity

A.) Low ambient temperature

When using a system-dependent recovery system on an appliance that has a non-operating compressor, the technician should; A.) Place access fitting on both the low and high side of the system. B.) Not heat the oil to release refrigerant. C.) Send the unit to the junk yard to be crushed. D.) Cut the unit's suction line to release the refrigerant.

A.) Place access fitting on both the low and high side of the system.

What must the equipment owners/operators include in recovered refrigerant records for equipment with refrigerant charges that range from 5 to 50 pounds? A.) The quantity of refrigerant (by type) added or recovered from disposed appliances each year and quantity of refrigerant (by type) sent for reclamation or destruction. B.) The quantity of refrigerant (by type) added or recovered from disposed appliances in each calendar month and quantity of refrigerant (by type) sent for reclamation or destruction. C.) The type of refrigerant, the amount added for seasonal variance, the amount added to a new unit, recovered from disposed appliances in each calendar month and quantity of refrigerant (by type) sent for reclamation or destruction. D.) The amount of new refrigerant added to a system in each calendar month and quantity of refrigerant (by type) sent for reclamation or destruction.

B.) The quantity of refrigerant (by type) added or recovered from disposed appliances in each calendar month and quantity of refrigerant (by type) sent for reclamation or destruction.

Silicone elastomers, for use in seals and gaskets, are not compatible with which refrigerants? A HCFCs B CFCs C HFOs D HFCS

C

A refrigerant sensor which will sound an alarm and automatically start a ventilation system in occupied equipment rooms falls under ASHRAE Standard; A.) 15 B.) 34 C.) 44 D.) 60

A.) 15

Unless plans are made to replace a system with a leak rate that exceeds the maximum leak rate, repairs must be made within; A.) 30 days. B.) 45 days. C.) 60 days D.) 90 days.

A.) 30 days.

Traces of oil around the sight glass inlet fitting of a refrigeration system might be the indication of: a. A leak. b. Excessive oil in the system. c. An overcharge. d. A restriction at the TXV .

A.) A leak

What conditions allow for a system to be opened and repaired without recovering the refrigerant to the required vacuum level? A.) A system with a large leak and internal pressure of 0 psig B.) A system that is undergoing a major component replacement C.) A system that uses a CFC refrigerant D.) A system that has a non-operational compressor

A.) A system with a large leak and internal pressure of 0 psig

Small appliances are equipped with a straight piece of tubing (process stub) that is used; A.) As the installation location for a piercing-type access valve. B.) To help the technician measure system subcooling. C.) As a p-trap to help capture system contaminants and debris. D.) To help the technician measure evaporator superheat.

A.) As the installation location for a piercing-type access valve.

System-dependent or passive recovery equipment; A.) Captures refrigerant into a non-pressurized container. B.) Captures refrigerant into one-trip refrigerant cylinders. C.) Always requires the assistance of a vacuum pump. D.) Is always equipped with an external compressor.

A.) Captures refrigerant into a non-pressurized container.

Which of the following is true regarding refrigerant leaks on small appliances? A.) EPA does not require repair, but leaks should be repaired whenever possible. B.) All leaks on Type I equipment must be repaired. C.) Only very large leaks must be repaired. D.) All systems with an annualized leak rate of 15 percent or greater must be repaired.

A.) EPA does not require repair, but leaks should be repaired whenever possible.

When filling a charging cylinder with a regulated refrigerant; A.) The refrigerant vapor that is vented off the top of the cylinder must be recovered. B.) The refrigerant must be added to the cylinder in the vapor phase to reduce losses. C.) The refrigerant being added to the cylinder must be weighed in to ensure accuracy. D.) The refrigerant vapor can be vented off the top of the cylinder as a deminimus release.

A.) The refrigerant vapor that is vented off the top of the cylinder must be recovered.

Type I Certification is required for; A.) persons handling refrigerant during maintenance, service, or repair of small appliances. B.) all persons who work in the factory that produces refrigerants. C.) all persons working at a refrigerant disposal site. D.) owners of manufacturing companies that produce CFCs.

A.) persons handling refrigerant during maintenance, service, or repair of small appliances.

A refrigerant cylinder designed to hold recovered refrigerant has a: A yellow body and grey top. B grey body and yellow top. C green body and yellow top. D orange body and grey top

B

The compressor ____________________________________ A changes a high-pressure vapor to a high-pressure liquid. B changes a low-pressure vapor to a high-pressure vapor. C changes a high-pressure liquid to a low-pressure liquid. D changes a low-pressure liquid to a low-pressure vapor.

B

The low-side test-pressure data-plate value should be used by a technician to determine a safe pressure for: A recovering refrigerant. B leak testing. C refrigerant charging. D retrofitting a system.

B

Which ASHRAE classification means slightly flammable? A A1 B A2L C A3 D B1

B

Which international agreement (Treaty) regulated the production and use of CFCs, HCFCs, halons, methyl chloroform and carbon tetrachloride? A Kyoto Treaty B Montreal Protocol C Council of Nicaea D Treaty of Ghent

B

If a strong odor is detected while performing a refrigerant recovery process, A.) The condenser has been operating incorrectly. B.) A compressor burnout has likely occurred. C.) The wrong oil has probably been installed in the unit. D.) The system has likely been subjected to a power surge.

B.) A compressor burnout has likely occurred.

Technicians who perform sealed-system service on small appliances must have; A.) Type I, II, or III certification. B.) Type I or Universal certification. C.) Type II certification. D.) A Universal 609 certification

B.) Type I or Universal certification.

Applying heat, with a heat gun, to the compressor; A.) can help free-up a bound compressor motor. B.) can help vaporize any trapped liquid refrigerant during recovery. C.) can help remove trapped refrigerant vapor during recovery. D.) can aid in isolating and pinpointing a refrigerant leak.

B.) can help vaporize any trapped liquid refrigerant during recovery.

If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be; A.) retrofitted or retired within 3 months. B.) retrofitted or retired within 12 months. C.) replaced within 3 months. D.) replaced within 12 months.

B.) retrofitted or retired within 12 months.

Recovering multiple types of refrigerants in the same cylinder; A.) Is an acceptable field service practice. B.) will make the reclaimed refrigerants unreclaimable. C.) will require venting to properly dispose of it. D.) will lower the pressure in the recovery cylinder.

B.) will make the reclaimed refrigerants unreclaimable.

Crop loss, eye disease, and skin cancer have been attributed to; A Depletion of Stratospheric nitrogen B Depletion of Stratospheric chlorine monoxide C Depletion of Stratospheric ozone D Depletion of Stratospheric oxygen

C

Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal method for; A Recovery cylinders B One pound cans C Disposable cylinders D Accumulator cylinders

C

Which type of refrigerant contains no chlorine? A HCFCs B HCFC Blends C HFCs D CFCs

C

On a system with an operating compressor, recovery equipment must be capable of recovering; A.) 95% of the refrigerant or achieving 5 inches of vacuum. B.) 90% refrigerant or achieving 4 inches of vacuum. C.) 80% refrigerant or achieving 4 inches of vacuum. D.) 100% refrigerant or achieving 0 inches of vacuum.

C.) 80% refrigerant or achieving 4 inches of vacuum.

Refrigerants CFC-12, HCFC-22, and HFC-134a are all classified as Type _______ substances. A.) B-1 B.) B-2 C.) A-1 D.) A-2

C.) A-1

Proper recovery techniques begin with the use of appropriate recovery equipment that has been certified by; A.) EPA only B.) Manufacturers approved by UL C.) EPA approved laboratory D.) EPA field supervisors

C.) EPA approved laboratory

When a system is in deep vacuum; A.) Never add refrigerant to the system. B.) Never use a micron gauge. C.) Never energize the compressor. D.) Never energize system fans and blowers

C.) Never energize the compressor.

Which refrigerant can be used as a trace gas for leak checking and pressurized with nitrogen? A.) R-12 B.) R-11 C.) R-22 D.) R-502

C.) R-22

If, after installing a fitting for the purpose of recovering the appliance's refrigerant, you find that the system pressure is 0 psig; A.) Utilize recovery equipment to achieve a 4-inch vacuum. B.) Pressurize the system with nitrogen prior to recovery. C.) Refrigerant recovery is not required. D.) Pressurize the system and leak test.

C.) Refrigerant recovery is not required.

When using a system-dependent recovery system on an appliance that has an operating compressor, the technician should; A.) Run the compressor and recover from the low side of the system only. B.) Install access fittings on both the high and low-pressure sides of the system. C.) Run the compressor and recover from the high side of the system only. D.) Never allow the refrigerant to go to the high side of the system.

C.) Run the compressor and recover from the high side of the system only.

If regulations change after the technician becomes certified; A.) The technician must re-take the certification exam. B.) An additional fee must be paid to the EPA by the technician. C.) The technician is responsible for complying with any changes to the regulations. D.) There are no additional compliance requirements for the technician.

C.) The technician is responsible for complying with any changes to the regulations.

Clean refrigerant for reuse by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter driers, is the definition of; A Recover B Reclaim C Reuse D Recycle

D

The molecule found in CFCs and HCFCs that depletes ozone is: A Fluorine B Hydrogen C Carbon D Chlorine

D

With a non-operating system compressor, recovery equipment must be capable of recovering; A.) 90 percent of the refrigerant or achieving 4 inches of vacuum. B.) 90 percent of the refrigerant or achieving 5 inches of vacuum. C.) 80 percent of the refrigerant or achieving 5 inches of vacuum. D.) 80 percent of the refrigerant or achieving 4 inches of vacuum.

D.) 80 percent of the refrigerant or achieving 4 inches of vacuum.

A small appliance is defined by EPA as; A.) Appliances charged, and hermetically sealed in a factory that contain 8 lbs or less of refrigerant. B.) Appliances charged, and hermetically sealed in a factory that contain 10 lbs or less of refrigerant. C.) Appliances with internal volumes no greater than 3 cubic feet. D.) Appliances manufactured, charged, and hermetically sealed in a factory that contain 5 lbs or less of refrigerant

D.) Appliances manufactured, charged, and hermetically sealed in a factory that contain 5 lbs or less of refrigerant

Non-condensables will cause; A.) Low superheat B.) Low discharge pressure C.) High superheat D.) High discharge pressure

D.) High discharge pressure

A new split system should be checked for leaks by; A.) pressurizing the system with a few ounces of HCFC-22 and compressed air. B.) pressurizing the system with a few ounces of CFC-12 and an inert gas. C.) releasing the factory refrigerant charge in the condensing unit. D.) pressurizing the system with a few ounces of system refrigerant and an inert gas.

D.) pressurizing the system with a few ounces of system refrigerant and an inert gas.

After the refrigerant has been recovered, which of the following can be used to flush the system? R-22 Compressed air Nitrogen Water

Nitrogen