EPA 608 (TYPE II) EXAM 2025 WITH 100% ACCURATE
SOLUTIONS
When a new system has been assembled, the first thing to do is? - ✅✅✅CORRECT -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 -
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 -15%
R-410A requires recovery tanks rated for at least? - ✅✅✅CORRECT -400 psig
After refrigerant liquid has been recovered from a system, any remaining vapor is? - ✅✅✅CORRECT -
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 -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 -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 -120 psig
Recovered refrigerant may contain what? - ✅✅✅CORRECT -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 -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 -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 -Liquid
Before using a recovery unit to remove a charge, what steps should be taken? - ✅✅✅CORRECT -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 -The rotating shaft seal.
Noncondensables in a system cause? - ✅✅✅CORRECT -Higher discharge pressure.
Heat Pumps that use R-410A should be leak checked with? - ✅✅✅CORRECT -Pressurized Nitrogen.
SOLUTIONS
When a new system has been assembled, the first thing to do is? - ✅✅✅CORRECT -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 -
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 -15%
R-410A requires recovery tanks rated for at least? - ✅✅✅CORRECT -400 psig
After refrigerant liquid has been recovered from a system, any remaining vapor is? - ✅✅✅CORRECT -
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 -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 -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 -120 psig
Recovered refrigerant may contain what? - ✅✅✅CORRECT -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 -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 -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 -Liquid
Before using a recovery unit to remove a charge, what steps should be taken? - ✅✅✅CORRECT -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 -The rotating shaft seal.
Noncondensables in a system cause? - ✅✅✅CORRECT -Higher discharge pressure.
Heat Pumps that use R-410A should be leak checked with? - ✅✅✅CORRECT -Pressurized Nitrogen.
