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EPA CERTIFICATION EXAM QUESTIONS & ANSWERS
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EPA CERTIFICATION EXAM QUESTIONS & ANSWERS
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EPA CERTIFICATION EXAM QUESTIONS & ANSWERSWhich Refrigerants contain the most chlorine? - Answers- CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2
refrigerants to the atmosphere? - Answers- July 1, 1992
Which Refrigerants have the lowest zone depletion potential? - Answers- HFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the
stratosphere is: - Answers- Chlorine
Stratospheric ozone consists of: - Answers- Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - Answers- Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: - Answers-
Ozone
Which refrigerant is a CFC? - Answers- R-12
Which refrigerant is an HCFC? - Answers- R-123 & R-22
Which refrigerant is an HFC? - Answers- R-134a
Which refrigerant contains no chlorine? - Answers- R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone depletion is
taking place is: - Answers- Chlorine monoxide
The following actions would violate the clean air act (CAA): - Answers- Knowingly
releasing Class 1 Class 2 substances
failing to keep or falsifying required records
failing to tech the required evacuation levels before opening a systems to the
atmosphere for service
One time (disposable) refrigerant cylinders are used for: - Answers- Virgin refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid?
- Answers- 80%
The time it takes to properly evacuate and dehydrate a system prior to charging with
refrigerant is determined by the: - Answers- Total volume of the system
Amount of non-condensibles (moisture) in the system
, Ambient Temperature
A system that fails to hold a vacuum after the evacuation process: - Answers- May
contain moisture
May have a leak
The condition and state entering the condenser of an air conditioner is a: - Answers-
Subcooled liquid
The component of an air conditioning system that changes a low pressure vapor to a
high pressure vapor is the: - Answers- Compressor
Refrigerant cylinders should be shipped - Answers- In the vertical upright position
For the maintenance, service or repair of small appliances, recovery equipment
manufactured after ________ must be certified by an EPA approved organization? -
Answers- November 15, 1993
Which best describes the definition of Type 1 "small appliance" as defined by EPA? -
Answers- Systems manufactured, charged and hermetically sealed with five (5) pounds
or less of refrigerant
For small appliances use, the recovery equipment manufactured after November 15,
1993, must be capable of recovery: - Answers- 80% of the refrigerant when the
compressor is not operating or achieve a 4-inch vacuum under ARI 740-1993
90% of the refrigerant when the compressor is operating or achieve a 4-inch vacuum
under ARI 740-1993
The sale of Class 1 and Class 2 refrigerants will be restricted to technicians certified by
an EPA approved program after: - Answers- November 14, 1994
The release of vapor from the top of a graduated charging cylinder, when filling, should:
- Answers- Not be vented and should be recoverd
Should regulation of the clean air act (CAA) change after a technicians certified: -
Answers- It will be the technicians responsibility to learn and comply with future
changes in the law
Containers of refrigerant R-134a are cooler coded: - Answers- Light Blue
System dependent (passive) refrigerant recovery of small appliances: - Answers- Do
not require an operating compressor
requires 80% of the refrigerant to be recovered
Recovers refrigerant in a non-pressurized container
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