EPA 608 (TYPE II) Exam ACTUAL
QUESTIONS AND CORRECT ANSWERS
When a new system has been assembled, the first thing to do is? - CORRECT
ANSWERS✅✅Pressurize the system with an inert gas & leak check.
After installation of a field-piped R-410A split heat pulp, the unit should first be? -
CORRECT ANSWERS✅✅Pressurized with nitrogen then leak checked.
The EPA regulations require that any appliances containing more than 50 pounds of
refrigerant (except for commercial & industrial process refrigeration) must be repaired when
the leak rate exceeds _________ of the charge per year? - CORRECT ANSWERS✅✅15%
R-410A requires recovery tanks rated for at least? - CORRECT ANSWERS✅✅400 psig
After refrigerant liquid has been recovered from a system, any remaining vapor is? -
CORRECT ANSWERS✅✅Condensed by the recovery system.
Your recovery/recycling machine has R-502 refrigerant in it. You now have to recover
refrigerant from a unit with R-22. What must be done before the R-22 refrigerant can be
recovered/recycled? - CORRECT ANSWERS✅✅Recover as much R-502 from the recovery
unit as possible, change filter, & evacuate.
In a refrigeration system with a TXV (or other type of throttling device), the component
directly following the condenser is the? - CORRECT ANSWERS✅✅Receiver
When charging an R-410A system that uses a water-cooled condenser, you must first charge
with vapor to a pressure of at least________, before switching to liquid charging. -
CORRECT ANSWERS✅✅120 psig
Recovered refrigerant may contain what? - CORRECT ANSWERS✅✅1.) Acids
2.) Moisture
, 3.) Oils
Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover
refrigerant from a unit with R-410A. What must be done before your recovery unit can be
used to recover R-410A? - CORRECT ANSWERS✅✅1.) The recovery unit must be EPA
certified for use with R-410A.
2.) The recovery tank must be designed for the pressure of R-410A.
3.) The filter & lubricant in the recovery unit must be changed, & the recovery unit
evacuated.
To recover liquid refrigerant, you must connect one hose to the? - CORRECT
ANSWERS✅✅Liquid Line.
The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to use a
remove the charge from the cylinder as a? - CORRECT ANSWERS✅✅Liquid
Before using a recovery unit to remove a charge, what steps should be taken? - CORRECT
ANSWERS✅✅1.) Check service valve positions.
2.) Check the oil level in the recovery unit.
3.) Evacuate recovery unit & recovery tank.
On refrigeration units that use an open compressor; the ________ is most likely to leak if the
unit is not used for several months. - CORRECT ANSWERS✅✅The rotating shaft seal.
Noncondensables in a system cause? - CORRECT ANSWERS✅✅Higher discharge
pressure.
QUESTIONS AND CORRECT ANSWERS
When a new system has been assembled, the first thing to do is? - CORRECT
ANSWERS✅✅Pressurize the system with an inert gas & leak check.
After installation of a field-piped R-410A split heat pulp, the unit should first be? -
CORRECT ANSWERS✅✅Pressurized with nitrogen then leak checked.
The EPA regulations require that any appliances containing more than 50 pounds of
refrigerant (except for commercial & industrial process refrigeration) must be repaired when
the leak rate exceeds _________ of the charge per year? - CORRECT ANSWERS✅✅15%
R-410A requires recovery tanks rated for at least? - CORRECT ANSWERS✅✅400 psig
After refrigerant liquid has been recovered from a system, any remaining vapor is? -
CORRECT ANSWERS✅✅Condensed by the recovery system.
Your recovery/recycling machine has R-502 refrigerant in it. You now have to recover
refrigerant from a unit with R-22. What must be done before the R-22 refrigerant can be
recovered/recycled? - CORRECT ANSWERS✅✅Recover as much R-502 from the recovery
unit as possible, change filter, & evacuate.
In a refrigeration system with a TXV (or other type of throttling device), the component
directly following the condenser is the? - CORRECT ANSWERS✅✅Receiver
When charging an R-410A system that uses a water-cooled condenser, you must first charge
with vapor to a pressure of at least________, before switching to liquid charging. -
CORRECT ANSWERS✅✅120 psig
Recovered refrigerant may contain what? - CORRECT ANSWERS✅✅1.) Acids
2.) Moisture
, 3.) Oils
Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover
refrigerant from a unit with R-410A. What must be done before your recovery unit can be
used to recover R-410A? - CORRECT ANSWERS✅✅1.) The recovery unit must be EPA
certified for use with R-410A.
2.) The recovery tank must be designed for the pressure of R-410A.
3.) The filter & lubricant in the recovery unit must be changed, & the recovery unit
evacuated.
To recover liquid refrigerant, you must connect one hose to the? - CORRECT
ANSWERS✅✅Liquid Line.
The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to use a
remove the charge from the cylinder as a? - CORRECT ANSWERS✅✅Liquid
Before using a recovery unit to remove a charge, what steps should be taken? - CORRECT
ANSWERS✅✅1.) Check service valve positions.
2.) Check the oil level in the recovery unit.
3.) Evacuate recovery unit & recovery tank.
On refrigeration units that use an open compressor; the ________ is most likely to leak if the
unit is not used for several months. - CORRECT ANSWERS✅✅The rotating shaft seal.
Noncondensables in a system cause? - CORRECT ANSWERS✅✅Higher discharge
pressure.
