EPA 608 TYPE III EXAM 2025/2026 WITH 100%
ACCURATE ANSWERS
1. What is the EPA's definition of a 'major' repair in
refrigeration systems?
Replacement of a purge
unit Replacement of a
switch
Replacement of a filter-drier
Replacement of an evaporator coil
2. What is the pressure threshold in mm Hg that indicates a leak
during a standing vacuum test according to ASHRAE Guideline
3-1996?
2.5 mm Hg
2.0 mm Hg
1.5 mm Hg
3.0 mm Hg
3. If a technician neglects to turn on the water pump during
vapor removal from a low-pressure refrigeration system, what
potential issue could arise?
overheating of the compressor
,freezing of the refrigerant
, increased pressure in the
system corrosion of the
components
4. Which valve is used to add refrigerant to a centrifugal machine?
Condenser charging
valve Float valve
Compressor service valve
Evaporator charging valve
5. Describe why vapor charging is preferred over liquid charging
when initiating the charging process in refrigeration systems.
Vapor charging is preferred because it allows for
a gradual increase in pressure, which helps to
prevent damage to system components like the
rupture disc.
Vapor charging is preferred because it is easier to control
than liquid charging.
Vapor charging is preferred because it prevents the
refrigerant from boiling.
Vapor charging is preferred because it is faster and more
efficient than liquid charging.
6. The refrigerant is absorbed on leaving the absorber
absorption system.
, __________ in the
ACCURATE ANSWERS
1. What is the EPA's definition of a 'major' repair in
refrigeration systems?
Replacement of a purge
unit Replacement of a
switch
Replacement of a filter-drier
Replacement of an evaporator coil
2. What is the pressure threshold in mm Hg that indicates a leak
during a standing vacuum test according to ASHRAE Guideline
3-1996?
2.5 mm Hg
2.0 mm Hg
1.5 mm Hg
3.0 mm Hg
3. If a technician neglects to turn on the water pump during
vapor removal from a low-pressure refrigeration system, what
potential issue could arise?
overheating of the compressor
,freezing of the refrigerant
, increased pressure in the
system corrosion of the
components
4. Which valve is used to add refrigerant to a centrifugal machine?
Condenser charging
valve Float valve
Compressor service valve
Evaporator charging valve
5. Describe why vapor charging is preferred over liquid charging
when initiating the charging process in refrigeration systems.
Vapor charging is preferred because it allows for
a gradual increase in pressure, which helps to
prevent damage to system components like the
rupture disc.
Vapor charging is preferred because it is easier to control
than liquid charging.
Vapor charging is preferred because it prevents the
refrigerant from boiling.
Vapor charging is preferred because it is faster and more
efficient than liquid charging.
6. The refrigerant is absorbed on leaving the absorber
absorption system.
, __________ in the
