EPA Complete Questions Core, Type 1 2 3

Refrigeration technicians who violate the Clean Air Act can

• lose their EPA 608 certification.

• be fined.

• be required to appear in Federal court.

• All of the above.

After 1995 supplies of CFC refrigerants used to service existing refrigeration appliances in the United States can only come from

• recovery and recycling.

• solvent conversion.

• European manufacturers.

• third-world chemical companies.

Refrigerants that are recovered can be

• returned to the same system and other systems owned by the same person without restriction.

• used in any system serviced that day.

• taken to the shop and sold as used refrigerants to other customers.

• called reclaimed refrigerant if a filter-drier was used during recovery.

Refrigerants cannot be called “reclaimed” unless they

• were properly processed in a reclaiming machine.

• have been chemically analyzed and the refrigerants meet the ARI-700 purity standard.

• are recovered using equipment less than 1 year old.

• are recovered from a system in service less than 1 year and still under warranty.

The EPA can require a technician to demonstrate the abilities to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can result in

• revocation of the technicians certification.

• seizure of the technicians recovery/recycling equipment.

• seizure of any refrigerant purchased by the technician that they still are in possession of.

What characteristic of CFC refrigerants make them more likely to reach the stratosphere than most other compounds that contain chlorine?

• Refrigerants such as CFCs that contain chlorine but not hydrogen are so stable that they do not break down in the lower atmosphere. The chlorine (or bromine) only breaks down when it reacts with the ozone molecules up higher in the stratosphere changing it to oxygen, thus breaking the ozone layer down.

• CFCs are lighter than other damaging compounds making them easier to float upward when released.

• CFCs are attracted to the static in the stratosphere.

• CFCs are attracted to the dust in the stratosphere.

A system is considered dehydrated when

• the vacuum indicator shows you have reached and held the required vacuum.

• the vacuum pump has run at least 5 hours.

• the manifold suction gauge has held a 30 inch hg vacuum for 3 hours.

• it asks you for a drink of water.

Disposable refrigerant containers are used for ________ refrigerants.

• recycled

• recovered

• virgin / new

• Both A and B

Which of the following refrigerants is an HCFC?

• R-124

• R-134a

• R-410a

• R-12

Which of the following statements is true about an azeotrope refrigerant mixture?

• It is always made from just two components.

• It has a pressure-temperature curve identical to one of its components.

• It is a mixture made from at least three different refrigerants.

• It is a mixture that acts like a single component refrigerant over its entire range.