1|Page
EPA 608 Type 3 Exam 2025| Actual Exam
Questions With Correct Answers
Long hoses between the unit & the recovery machine should not be used because
they cause: - Correct-answer-excessive pressure drop
increased recovery time
increased emissions
According to ASHRAE's 1992 refrigerant safety classification, which designations is
the most safe - Correct-answer-A-1
You can determine a safe pressure for leak testing a system from the: - Correct-
answer-low side test-pressure data-plate valve
A cyclinder with a grey body and yellow top is designed to hold: - Correct-answer-
recovered refrigerant
,2|Page
Which refrigerant has the highest ozone depletion potential - Correct-answer-
CFC's
R-134a is a - Correct-answer-HFC refrigerant
In genreal blended refrigerants should be charged: - Correct-answer-as a liquid
refrigerant that enters the compressor, under normal operating conditiona is a: -
Correct-answer-low pressure vapor
_______ refers to the process of cleaning refrigerant by oil seperation 7 single or
multiple passes through filter driers which reduce moisture and acidity? - Correct-
answer-Recycling
When a system will not hold a vacuum after it has been evacuated then: - Correct-
answer-the system may be leaking
, 3|Page
When dealing with small systems, how many refrigerants may be recovered into
the same cylinder? - Correct-answer-one
To obtain accurate vacuum readings during system evacuation, the system
vacuum guage should be located: - Correct-answer-as far from the vacuum pump
as possible
When evacuating a system, the hoses should be: - Correct-answer-equal to or
larger than the vacuum pump inlet connection
A system is dehydrated to: - Correct-answer-remove water & water vapor
Measuring the system's final vacuum is always done with - Correct-answer-the
system isolated & the vacuum pump off
When using nitrogen to pressurize a system you should: - Correct-answer-only
charge with nitrogen vapor
EPA 608 Type 3 Exam 2025| Actual Exam
Questions With Correct Answers
Long hoses between the unit & the recovery machine should not be used because
they cause: - Correct-answer-excessive pressure drop
increased recovery time
increased emissions
According to ASHRAE's 1992 refrigerant safety classification, which designations is
the most safe - Correct-answer-A-1
You can determine a safe pressure for leak testing a system from the: - Correct-
answer-low side test-pressure data-plate valve
A cyclinder with a grey body and yellow top is designed to hold: - Correct-answer-
recovered refrigerant
,2|Page
Which refrigerant has the highest ozone depletion potential - Correct-answer-
CFC's
R-134a is a - Correct-answer-HFC refrigerant
In genreal blended refrigerants should be charged: - Correct-answer-as a liquid
refrigerant that enters the compressor, under normal operating conditiona is a: -
Correct-answer-low pressure vapor
_______ refers to the process of cleaning refrigerant by oil seperation 7 single or
multiple passes through filter driers which reduce moisture and acidity? - Correct-
answer-Recycling
When a system will not hold a vacuum after it has been evacuated then: - Correct-
answer-the system may be leaking
, 3|Page
When dealing with small systems, how many refrigerants may be recovered into
the same cylinder? - Correct-answer-one
To obtain accurate vacuum readings during system evacuation, the system
vacuum guage should be located: - Correct-answer-as far from the vacuum pump
as possible
When evacuating a system, the hoses should be: - Correct-answer-equal to or
larger than the vacuum pump inlet connection
A system is dehydrated to: - Correct-answer-remove water & water vapor
Measuring the system's final vacuum is always done with - Correct-answer-the
system isolated & the vacuum pump off
When using nitrogen to pressurize a system you should: - Correct-answer-only
charge with nitrogen vapor
