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EPA Certification Exam 2023/2024 Questions & Answers (Guaranteed A+ 100% Verified)
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EPA Certification Exam 2023/2024 Questions & Answers (Guaranteed A+ 100% Verified)
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EPA Certification ExamWhich Refrigerants contain the most chlorine? - ANS CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants
to the atmosphere? - ANS July 1, 1992
Which Refrigerants have the lowest ozone depletion potential? - ANS HFC's
The molecule found in CFC's and HCFC's refrigerants that destroys the ozone in the
stratosphere is: - AND Chlorine
Stratospheric ozone consists of: - AND Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - ANS Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: - ANS Ozone
Which refrigerant is a CFC? - ANS R-12
Which refrigerant is an HCFC? - ANS R-123 & R-22
Which refrigerant is an HFC? - ANS R-134a
Which refrigerant contains no chlorine? - ANS R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone depletion is taking
place is: - ANS Chlorine monoxide
The following actions would violate the clean air act (CAA): - ANS 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: - ANS Virgin refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid? - ANS
80%
The time it takes to properly evacuate and dehydrate a system prior to charging with refrigerant
is determined by the: - ANS 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: - ANS May contain moisture
May have a leak
To recover refrigerant is to: - ANS Remove refrigerant is any condition from a system in either
an active or passive manner, and store it in an external container without necessarily testing or
processing.
The process that reduces contaminate in used refrigerant by oil separation with single and
multiple passes through devices such as replaceable filter core driers, which reduces moisture,
acidity, and particulate matter is: - ANS Recycling
The synthetic lubricant used with HCFC-based ternary blends is: - ANS Alkyl benzene
R-134a is "drop-in" refrigerant for: - ANS R-134a is not a Drop-in refrigerant
The refrigerant condition and state entering the condenser of an air conditioner is a: - ANS
Superheated Vapor
The condition and state entering the condenser of an air conditioner is a: - ANS Subcooled
liquid
The component of an air conditioning system that changes a low pressure vapor to a high
pressure vapor is the: - ANS Compressor
Refrigerant cylinders should be shipped - ANS 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? - ANS November 15, 1993
Which best describes the definition of Type 1 "small appliance" as defined by EPA? - ANS
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: - ANS 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
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