EPA Test Prep 2 Type 1

Question 1

EPA regulations include which of the following in the definition of a small appliance?

A) products manufactured, charged and hermetically sealed in a factory
B) products having 5 pounds or less of refrigerant
C) products with compressors under 1/2 horsepower
D) both “A” and “B”

Answer 1

D) Both “A” and “B”

Question 2

If EPA regulations change after a technician becomes certified:

A) the technician certification is grandfathered for one year to allow time for recertification
B) it will be the technicians responsibility to comply with any future changes in the law
C) a new certification test must be taken to be recertified
D) both “A” and “C”

Answer 2

B) it will be the technicians responsibility to comply with any future changes in the law

Question 3

All recovery devices manufactured BEFORE Nov. 15, 1993 for use with small appliances must meet which of the following requirements?

A) capable of recovering 80% of The refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740
B) capable of recovering 70% of the refrigerant if the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740
C) capable of achieving a 10 inch vacuum under conditions of ARI 740
D) no requirement: this equipment would be considered “grandfathered”

Answer 3

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

Question 4

Small appliance recovery equipment manufactured AFTER Nov. 15, 1993, must be certified to be capable of:
A) recovering 90% of the refrigerant when the compressor is operating or achieving a 4 inch vacuum under the conditions of ARI 740
B) recovering 80% of the refrigerant when the compressor is operating
C) recovering 95% of the refrigerant when the compressor is operating or achieving a 10 inch vacuum under the conditions of ARI 740
D) recovering 75% of the refrigerant when the compressor is operating

Answer 4

A) recovering 90% of the refrigerant when the compressor is operating or achieving a 4 inch vacuum under the conditions of ARI 740

Question 5

Technicians receiving a passing grade on this small appliance examination are certified to recover refrigerant during the maintenance, service or repair of:

A) packaged terminal air conditioners (PTACs) with 5 pounds or less of refrigerant
B) small central air conditioning systems with 10 pounds or less of refrigerant
C) low pressure equipment
D) motor vehicle air conditioning equipment

Answer 5

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

Question 6

Recovery equipment used during maintenance, service or repair of small appliances must be certified by an EPA approved laboratory if manufactured after:

A) July 1, 1992
B) July 1, 1993
C) May 13, 1993
D) November 15, 1993

Answer 6

D) November 15, 1993

Question 7

Equipment manufactured AFTER Nov. 15, 1993 which is used to recover refrigerant from small appliances for the purpose of disposal must meet what standard?

A) recover 95% of the refrigerant whether or not the compressor is operative
B) recover 80% of refrigerant with an inoperative compressor
C) recover 90% of the refrigerant with an operative compressor
D) both “B” and “C”

Answer 7

D) both “B” and “C”

Question 8

When checking for non-condensable inside a recovery cylinder, why should the technician allow the temperature of the cylinder to stabilize to room temperature before taking a pressure reading?

A) to prevent safety valves from purging refrigerant
B) it is a quick method of determining refrigerant level inside the tank
C) comparisons to a pressure-temperature chart are only valid if both the pressure and temperature of the refrigerant are stable and know
D) a temperature reading alone is enough to determine refrigerant quality

Answer 8

C) comparisons to a pressure-temperature chart are only valid if both the pressure and temperature of the refrigerant are stable and know

Question 9

When recovering refrigerant into a non-pressurized container from a refrigerator with an inoperative compressor:

A) it is necessary to heat the compressor and strike it with a rubber mallet
B) it is only necessary to recover as much refrigerant as will naturally flow out of the system
C) it is not necessary to recover since the refrigerant is probably contaminated
D) it is necessary to chase refrigerant from the oil with pressurized nitrogen

Answer 9

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

Question 10

The system dependent (passive) recovery process for small appliances:

A) never needs the use of a pump or heat to recover refrigerant
B) must use pressure relief device when recovering refrigerant
C) captures refrigerant in a non-pressurized container
D) can only be performed on a system with an operating compressor

Answer 10

C) captures refrigerant in a non-pressurized container

Question 11

When filling a graduated charging cylinder, refrigerant that is vented off the top of the cylinder:

A) need not be recovered
B) must be recovered
C) is considered a “de minimis” release
D) none of the above

Answer 11

B) must be recovered

Question 12

When R 500 is recovered from an appliance, it:

A) can be mixed with either R22 or R12 during the recovery process, since R500 is actually a mixture of the two refrigerants
B) can be mixed with R12 but not R22 during the recovery process
C) need not be recovered since R500 is not one of the refrigerants covered by the Clean Air Act
D) must be recovered into its own recovery vessel that is clearly marked to ensure that mixing of refrigerant does not occur

Answer 12

D) must be recovered into its own recovery vessel that is clearly marked to ensure that mixing of refrigerant does not occur

Question 13

Using the system dependent (passive) recovery process, which condition requires the accessing of both the High and Low side of the system for refrigerant recovery?

A) when there is a leak in the system
B) when the compressor operates normally
C) when the compressor only runs at half speed
D) when the compressor does not run

Answer 13

D) when the compressor does not run

Question 14

When a household refrigerator compressor does not run, it is recommended that Low and High side access valves be installed when recovering refrigerant from the system because:

A) it can enhance the speed of recovery
B) it may be necessary to achieve required recovery efficiency
C) otherwise the refrigerators compressor may be damaged
D) both “A” and “B”

Answer 14

D) both “A” and “B”

Question 15

At high temperature, (i.e., open flames, glowing metal surfaces, etc.) R12 and R22 can decompose to form:

A) boric and chromic acids
B) sulfuric and phosphoric acids
C) hydrochloric and hydrofluoric acids
D) none of the above

Answer 15

C) hydrochloric and hydrofluoric acids

Question 16

When using recovery cylinders and equipment with schrader valves, it is “critical” to:

A) inspect the schrader valve core for bends and breakage
B) replace the damage schrader valve core to prevent leakage
C) cap the schrader ports to prevent accidental depression of the valve core
D) all of the above

Answer 16

D) all of the above

Question 17

If a large leak of refrigerant occurs such as from a filled cylinder in an enclosed area, what action should be taken when no self-contained breathing apparatus is available?

A) use butyl lined gloves and try to stop the leak
B) use a leak detector to locate the leak and try to stop the leak
C) vacate and ventilate the spill area
D) all of the above

Answer 17

C) vacate and ventilate the spill area

Question 18

The sale of CFC and HCFC 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

Answer 18

D) restricted to technicians who are certified in refrigerant recovery

Question 19

A storage cylinder of recovered R22 at normal room temperature (about 75 degrees F), in the absence of non-condensable, it will be pressurized to:

A) 250 psig
B) 200 psig
C) 175 psig
D) 130 psig

Answer 19

D) 130 psig

Question 20

What is the maximum allowable factory charge of refrigerant for Type 1 appliances?

A) 3 pounds
B) 5 pounds
C) 10 pounds
D) 15 pounds

Answer 20

B) 5 pounds

Question 21

Refrigerants (i.e., R12, R22, R500, etc.) in large quantities can cause suffocation because:

A) they smell strong and make breathing difficult
B) they are lighter than air and cause dizziness
C) they are heavier than air and displace oxygen
D) they sting the nose and cause sneezing

Answer 21

C) they are heavier than air and displace oxygen

Question 22

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) R12

Answer 22

D) R12

Question 23

The system dependent (passive) recovery process:

A) never needs the use of a pump or heat to recover refrigerant
B) must use a pressure relief device to protect the technician and equipment
C) recovers refrigerant in a non-pressurized container
D) can only be performed on a system with an operating compressor

Answer 23

C) recovers refrigerant in a non-pressurized container

Question 24

At high temperatures, (i.e., open flames, glowing metal surfaces, etc.) R12 and R22 can decompose to form:

A) Hydrozine gas
B) Phosgene gas
C) Helium gas
D) None of the above

Answer 24

B) Phosgene gas

Question 25

Before beginning a refrigerant recovery procedure it is ALWAYS necessary to:

A) allow the appliance to stabilize at room temperature
B) know the type of refrigerant that is in the system
C) remove the appliance to an outdoor location
D) disconnect the appliance from its power source

Answer 25

B) know the type of refrigerant that is in the system