EPA 608 STUDY MATERIAL CORE TYPE 1 2 AND 3
COMPLETE QUESTION SET WITH VERIFIED
SOLUTIONS GRADED A+
Question 1.
According to ASHRAE's 1992 refrigerant safety classification, which designations is the most safe
ANSWER
A-1
Question 2.
Which gases would cause the least amount of damage to the environment during a leak check
ANSWER
Dry nitrogen
Question 3.
Whenever dry nitrogen from a portable cylinder is connected to a system what item is of most
importance in consideration of safety
ANSWER
There is a relief valve in the downstream line from the pressure regulator
Question 4.
When using with any solvent, cleaner, chemical or refrigerant you should review:
ANSWER
Material safety data sheets
Question 5.
The term used to describe the fact that a refrigerant blend has a range of boiling or condensing points
at a constant pressure is
ANSWER
Temperature glide
,Question 6.
Refrigerant that enters the compressor under normal operating conditions is a
ANSWER
Low pressure vapor
Question 7.
If corrosion is found within the body of a relief valve the valve must be
ANSWER
Replaced
Question 8.
In a refrigeration system the device that changes a low pressure vapor to a high-pressure vapor is the:
ANSWER
Compressor
Question 9.
Even though R-22 is considered non-toxic it:
ANSWER
can cause asphyxia
Question 10.
It is important not to mix R-22 and R-410a refrigerants in the same container because:
ANSWER
The mixture may be impossible to reclaim
Question 11.
What effects can ozone depletion have on the environment
ANSWER
All of the above - reduced crop yields and reduced marine life and increased ground level
ozone
, Question 12.
When using nitrogen to pressurize a system you should
ANSWER
Only charge with nitrogen vapor
Question 13.
It is necessary to place a refrigerant label on
ANSWER
A refrigerant cylinder which is being returned for reclaiming
Question 14.
A ternary refrigerant blend is a____________ part mixture
ANSWER
Three-part
Question 15.
Never use an open flame to heat a refrigerant tank because:
ANSWER
All of the above-it can result in venting refrigerant to the atmosphere and the tank may
explode causing serious injury to people nearby and refrigerant in the tank may decompose
forming a toxic material
Question 16.
To obtain an accurate vacuum readings during system evacuation the system vacuum gauge should
be located colon
ANSWER
As far from the vacuum pump as possible
COMPLETE QUESTION SET WITH VERIFIED
SOLUTIONS GRADED A+
Question 1.
According to ASHRAE's 1992 refrigerant safety classification, which designations is the most safe
ANSWER
A-1
Question 2.
Which gases would cause the least amount of damage to the environment during a leak check
ANSWER
Dry nitrogen
Question 3.
Whenever dry nitrogen from a portable cylinder is connected to a system what item is of most
importance in consideration of safety
ANSWER
There is a relief valve in the downstream line from the pressure regulator
Question 4.
When using with any solvent, cleaner, chemical or refrigerant you should review:
ANSWER
Material safety data sheets
Question 5.
The term used to describe the fact that a refrigerant blend has a range of boiling or condensing points
at a constant pressure is
ANSWER
Temperature glide
,Question 6.
Refrigerant that enters the compressor under normal operating conditions is a
ANSWER
Low pressure vapor
Question 7.
If corrosion is found within the body of a relief valve the valve must be
ANSWER
Replaced
Question 8.
In a refrigeration system the device that changes a low pressure vapor to a high-pressure vapor is the:
ANSWER
Compressor
Question 9.
Even though R-22 is considered non-toxic it:
ANSWER
can cause asphyxia
Question 10.
It is important not to mix R-22 and R-410a refrigerants in the same container because:
ANSWER
The mixture may be impossible to reclaim
Question 11.
What effects can ozone depletion have on the environment
ANSWER
All of the above - reduced crop yields and reduced marine life and increased ground level
ozone
, Question 12.
When using nitrogen to pressurize a system you should
ANSWER
Only charge with nitrogen vapor
Question 13.
It is necessary to place a refrigerant label on
ANSWER
A refrigerant cylinder which is being returned for reclaiming
Question 14.
A ternary refrigerant blend is a____________ part mixture
ANSWER
Three-part
Question 15.
Never use an open flame to heat a refrigerant tank because:
ANSWER
All of the above-it can result in venting refrigerant to the atmosphere and the tank may
explode causing serious injury to people nearby and refrigerant in the tank may decompose
forming a toxic material
Question 16.
To obtain an accurate vacuum readings during system evacuation the system vacuum gauge should
be located colon
ANSWER
As far from the vacuum pump as possible
