Epa 608 Type 3 Test Actual Exam All Questions
And Answers
_____ to verify the allowable machine test pressure. - ANSWER
Use the value on the system nameplate
Non-azeotropic refrigerants leak from a system - ANSWER
at uneven rates because of the different vapor pressures
Never fill a refillable refrigerant cylinder beyond - ANSWER
80% of its capacity by weight
Ozone depletion is caused by _____ in HCFC refrigerants. -
ANSWER chlorine
The release of any CFC, HCFC, or HFC refrigerant during ______
is illegal. - ANSWER theft of equipment
If a system cannot maintain a vacuum, the system ________. -
ANSWER could have a leak or still be evaporating off
trapped refrigerant or moisture
Which refrigerant release is allowable by the EPA because the
refrigerant is "exempt." - ANSWER Releasing isobutane
from a household freezer
________ can combine to cause a fire or explosion when
working with flammable hydrocarbon refrigerants. - ANSWER
, A sufficient concentration of the refrigerant in the space
and an ignition source
Portable refillable tanks must meet ________ standards. -
ANSWER Department of Transportation
Which health effect increases from loss of the stratospheric
ozone layer? - ANSWER Cases of cataracts and skin cancer
What action violates the EPA's prohibition on venting? -
ANSWER Opening the system without properly recovering
the refrigerant first
Dehydrating means to remove ________. - ANSWER water
and water vapor
Recovery cylinders should never be overfilled because
________. - ANSWER the internal pressure of the cylinders
can rise in heated areas and cause an explosion or venting
Ozone contains ________. - ANSWER molecules containing
3 oxygen atoms
Which material is NOT compatible with any HFO refrigerant? -
ANSWER Silicone
A flammable refrigerant can only burn or explode if the
refrigerant concentration is ________. - ANSWER both
,above the lower flammability limit and below the upper
flammability limit
How much can a technician be fined for venting a non-exempt
refrigerant from a system? - ANSWER $44,539 per day per
violation
Which refrigerant is an HFC? - ANSWER R-134a
Which appliances are NOT covered by EPA regulations? -
ANSWER Desiccant dehumidifiers
After a refrigerant is phased-out, supplies of that refrigerant for
equipment servicing can only come from ________. - ANSWER
recovered and reclaimed refrigerant
According to the Roland-Molina theory, ________ are
destroyed by each chlorine atom in the stratosphere. - ANSWER
100,000 ozone molecules
The pressure range that is typically displayed on a high-
pressure manifold gauge is ________. - ANSWER 0 to 800
psig
All non-exempt refrigerants ________. - ANSWER must be
recovered before opening or disposing of appliances
, Which refrigerant can fractionate? - ANSWER R-407C
________ refrigerants have the highest ODP. - ANSWER
CFCs
Before recharging any flammable hydrocarbon or HFO
refrigerant, always ________. - ANSWER both A and B
________ is the removal of refrigerant from a system and
storing it in a container without testing or processing it in any
way. - ANSWER Recovering
When servicing an R-22 system you CANNOT ________. -
ANSWER top off the unit with R-407C
Which refrigerant is considered a high-pressure refrigerant? -
ANSWER R-410A
Which refrigerant(s) must be recovered ________. - ANSWER
all non-exempt refrigerants
________ is cleaning the refrigerant for immediate reuse by oil
separation and single or multiple passes through devices, like
replaceable core filter driers. - ANSWER Recycling
Which action is a violation of the prohibition on venting
refrigerants? - ANSWER Adding nitrogen to a fully charged
And Answers
_____ to verify the allowable machine test pressure. - ANSWER
Use the value on the system nameplate
Non-azeotropic refrigerants leak from a system - ANSWER
at uneven rates because of the different vapor pressures
Never fill a refillable refrigerant cylinder beyond - ANSWER
80% of its capacity by weight
Ozone depletion is caused by _____ in HCFC refrigerants. -
ANSWER chlorine
The release of any CFC, HCFC, or HFC refrigerant during ______
is illegal. - ANSWER theft of equipment
If a system cannot maintain a vacuum, the system ________. -
ANSWER could have a leak or still be evaporating off
trapped refrigerant or moisture
Which refrigerant release is allowable by the EPA because the
refrigerant is "exempt." - ANSWER Releasing isobutane
from a household freezer
________ can combine to cause a fire or explosion when
working with flammable hydrocarbon refrigerants. - ANSWER
, A sufficient concentration of the refrigerant in the space
and an ignition source
Portable refillable tanks must meet ________ standards. -
ANSWER Department of Transportation
Which health effect increases from loss of the stratospheric
ozone layer? - ANSWER Cases of cataracts and skin cancer
What action violates the EPA's prohibition on venting? -
ANSWER Opening the system without properly recovering
the refrigerant first
Dehydrating means to remove ________. - ANSWER water
and water vapor
Recovery cylinders should never be overfilled because
________. - ANSWER the internal pressure of the cylinders
can rise in heated areas and cause an explosion or venting
Ozone contains ________. - ANSWER molecules containing
3 oxygen atoms
Which material is NOT compatible with any HFO refrigerant? -
ANSWER Silicone
A flammable refrigerant can only burn or explode if the
refrigerant concentration is ________. - ANSWER both
,above the lower flammability limit and below the upper
flammability limit
How much can a technician be fined for venting a non-exempt
refrigerant from a system? - ANSWER $44,539 per day per
violation
Which refrigerant is an HFC? - ANSWER R-134a
Which appliances are NOT covered by EPA regulations? -
ANSWER Desiccant dehumidifiers
After a refrigerant is phased-out, supplies of that refrigerant for
equipment servicing can only come from ________. - ANSWER
recovered and reclaimed refrigerant
According to the Roland-Molina theory, ________ are
destroyed by each chlorine atom in the stratosphere. - ANSWER
100,000 ozone molecules
The pressure range that is typically displayed on a high-
pressure manifold gauge is ________. - ANSWER 0 to 800
psig
All non-exempt refrigerants ________. - ANSWER must be
recovered before opening or disposing of appliances
, Which refrigerant can fractionate? - ANSWER R-407C
________ refrigerants have the highest ODP. - ANSWER
CFCs
Before recharging any flammable hydrocarbon or HFO
refrigerant, always ________. - ANSWER both A and B
________ is the removal of refrigerant from a system and
storing it in a container without testing or processing it in any
way. - ANSWER Recovering
When servicing an R-22 system you CANNOT ________. -
ANSWER top off the unit with R-407C
Which refrigerant is considered a high-pressure refrigerant? -
ANSWER R-410A
Which refrigerant(s) must be recovered ________. - ANSWER
all non-exempt refrigerants
________ is cleaning the refrigerant for immediate reuse by oil
separation and single or multiple passes through devices, like
replaceable core filter driers. - ANSWER Recycling
Which action is a violation of the prohibition on venting
refrigerants? - ANSWER Adding nitrogen to a fully charged
