Which conditions requires accessing both the high and low side of the system for refrigerant recovery when using the system-dependent passive recovery process?

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 refrigerantC) products with compressors under 1/2 horsepower D) both "A" and "B"

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 lawC) a new certification test must be taken to be recertified D) both "A" and "C"

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

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 740B) capable of recovering 70% of the refrigerant if the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740C) capable of achieving a 10 inch vacuum under conditions of ARI 740D) no requirement: this equipment would be considered "grandfathered"

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

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 740B) 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 740D) recovering 75% of the refrigerant when the compressor is operating

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

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

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

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

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 operativeB) recover 80% of refrigerant with an inoperative compressorC) recover 90% of the refrigerant with an operative compressorD) both "B" and "C"

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 tankC) comparisons to a pressure-temperature chart are only valid if both the pressure and temperature of the refrigerant are stable and knowD) a temperature reading alone is enough to determine refrigerant quality

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

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 malletB) 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

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

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

C) captures refrigerant in a non-pressurized container

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" releaseD) none of the above (adsbygoogle = window.adsbygoogle || []).push({});

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

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

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 systemB) when the compressor operates normally C) when the compressor only runs at half speedD) when the compressor does not run

D) when the compressor does not run

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 recoveryB) it may be necessary to achieve required recovery efficiency C) otherwise the refrigerators compressor may be damagedD) both "A" and "B"

At high temperature, (i.e., open flames, glowing metal surfaces, etc.) R12 and R22 can decompose to form:A) boric and chromic acidsB) sulfuric and phosphoric acidsC) hydrochloric and hydrofluoric acidsD) none of the above

C) hydrochloric and hydrofluoric acids

When using recovery cylinders and equipment with schrader valves, it is "critical" to:A) inspect the schrader valve core for bends and breakageB) replace the damage schrader valve core to prevent leakageC) cap the schrader ports to prevent accidental depression of the valve coreD) all of the above

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 leakB) use a leak detector to locate the leak and try to stop the leakC) vacate and ventilate the spill areaD) all of the above

C) vacate and ventilate the spill area

The sale of CFC and HCFC refrigerants is:A) bannedB) limited by law to equipment ownersC) allowed only if there is proof of needD) restricted to technicians who are certified in refrigerant recovery

D) restricted to technicians who are certified in refrigerant recovery

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 psigC) 175 psigD) 130 psig

What is the maximum allowable factory charge of refrigerant for Type 1 appliances?A) 3 poundsB) 5 pounds C) 10 poundsD) 15 pounds

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 dizzinessC) they are heavier than air and displace oxygenD) they sting the nose and cause sneezing

C) they are heavier than air and displace oxygen

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 chlorideC) methyl formateD) R12 (adsbygoogle = window.adsbygoogle || []).push({});

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 containerD) can only be performed on a system with an operating compressor

C) recovers refrigerant in a non-pressurized container

At high temperatures, (i.e., open flames, glowing metal surfaces, etc.) R12 and R22 can decompose to form: A) Hydrozine gasB) Phosgene gasC) Helium gasD) None of the above

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

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