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EPA Certification Exam 2023/2024 already graded A+
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EPA Certification ExamWhich Refrigerants contain the most chlorine? - ANSCFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants
to the atmosphere? - ANSJuly 1, 1992
Which Refrigerants have the lowest zone depletion potential? - ANSHFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the
stratosphere is: - ANSChlorine
Stratospheric ozone consists of: - ANSThree oxygen atoms
Stratospheric ozone depletion is a _________ problem: - ANSGlobal
The Gas in the stratosphere that protects us from ultraviolet radiation is: - ANSOzone
Which refrigerant is a CFC? - ANSR-12
Which refrigerant is an HCFC? - ANSR-123 & R-22
Which refrigerant is an HFC? - ANSR-134a
Which refrigerant contains no chlorine? - ANSR-134a
The Molecule found in the stratosphere that indicates stratospheric ozone depletion is taking
place is: - ANSChlorine monoxide
The following actions would violate the clean air act (CAA): - ANSKnowingly 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: - ANSVirgin refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid? -
ANS80%
The time it takes to properly evacuate and dehydrate a system prior to charging with refrigerant
is determined by the: - ANSTotal 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: - ANSMay contain moisture
May have a leak
To recover refrigerant is to: - ANSRemove 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: - ANSRecycling
The synthetic lubricant used with HCFC-based ternary blends is: - ANSAlkyl benzene
R-134a is "drop-in" refrigerant for: - ANSR-134a is not a Drop-in refrigerant
The refrigerant condition and state entering the condenser of an air conditioner is a: -
ANSSuperheated Vapor
The condition and state entering the condenser of an air conditioner is a: - ANSSubcooled liquid
The component of an air conditioning system that changes a low pressure vapor to a high
pressure vapor is the: - ANSCompressor
Refrigerant cylinders should be shipped - ANSIn 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? - ANSNovember 15, 1993
Which best describes the definition of Type 1 "small appliance" as defined by EPA? -
ANSSystems 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: - ANS80% 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: - ANSNovember 14, 1994
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