EPA 608 TYPE 3 EXAM 2025 WITH 100% ACCURATE
SOLUTIONS
On low pressure chillers, moisture typically enters the refrigerant system through - ✅✅✅CORRECT -
air leaks from areas with gaskets or fittings
The maximum test pressure for leak testing a low pressure centrifugal is: - ✅✅✅CORRECT -10 psig
Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller -
✅✅✅CORRECT -...
A hydrostatic tube test kit is used to: - ✅✅✅CORRECT -determine if a tube leaks
Commercial and industrial process refrigeration systems must be repaired when the leak rate exceeds
____ of the charge per year. - ✅✅✅CORRECT -35%
Refrigerant recovery typically start with liquid recovery it is faster. - ✅✅✅CORRECT -...
A rupture disc on a recovery vessel for a low pressure refrigerants relieves at: - ✅✅✅CORRECT -15
psig
According to ASHRAE Guideline 3-1996, if the pressure in a system rises from 1 mm Hg to a level above
____ during a standing vacuum test, the system should be checked for leaks. - ✅✅✅CORRECT -2.5
mm Hg
The primary water source for a recovery unit condensing coil is _____. - ✅✅✅CORRECT -local
municipal water supply
When recharging a refrigeration system with R-11, what vaporpressure is necessary in the shells before
changing with liquid? - ✅✅✅CORRECT -16.9" Hg vacuum
, After recovering the liquid refrigerant you must: - ✅✅✅CORRECT -recover the vapor refrigerant
According to the EPA there is approximately _____ refrigerant vapor left in an average 350 ton R-11
chiller at 0 psig pressure once all the R-11 liquid has been removed. - ✅✅✅CORRECT -100 pounds
Charging refrigerant liquid into a refrigeration system when it is under a 29 inch Hg vacuum can cause
the: - ✅✅✅CORRECT -system water to freeze
A system does not have to be evacuated all the way to the required level when: - ✅✅✅CORRECT -
leaks in the appliance make evacuation to the prescribed level unattainable
Which of the foloowing repairs would ALWAYS be considered "major" under EPA's - ✅✅✅CORRECT -
replacement of evaporator coil
Under EPA's regulation's _______ is used to pressurize a low pressure chiller for the purpose of opening
the system for a non major repair? - ✅✅✅CORRECT -warming the refrigerant
If you are using a recovery machine manufactored AFTER 11-15-93 you must evacuate an low pressure
appliance to _______ before making a major repair. - ✅✅✅CORRECT -25 mm of Hg absolute
After reaching the required recovery vacuum on a chiller, you should - ✅✅✅CORRECT -Wait for at
least a few minutes to see if the system pressure rises, indicating that there is till refrigerant in a liquid
form or in the oil
The pressure corresponding to 32 F for R-123 - ✅✅✅CORRECT -20 inches of HG vacuum
When evacuating a system the use of too large a vacuum pump can cause? - ✅✅✅CORRECT -
trapped water to freeze
Refrigerant-11 at a pressure of 17 inches HG vacuum has a saturation temperature of: -
✅✅✅CORRECT -35F
SOLUTIONS
On low pressure chillers, moisture typically enters the refrigerant system through - ✅✅✅CORRECT -
air leaks from areas with gaskets or fittings
The maximum test pressure for leak testing a low pressure centrifugal is: - ✅✅✅CORRECT -10 psig
Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller -
✅✅✅CORRECT -...
A hydrostatic tube test kit is used to: - ✅✅✅CORRECT -determine if a tube leaks
Commercial and industrial process refrigeration systems must be repaired when the leak rate exceeds
____ of the charge per year. - ✅✅✅CORRECT -35%
Refrigerant recovery typically start with liquid recovery it is faster. - ✅✅✅CORRECT -...
A rupture disc on a recovery vessel for a low pressure refrigerants relieves at: - ✅✅✅CORRECT -15
psig
According to ASHRAE Guideline 3-1996, if the pressure in a system rises from 1 mm Hg to a level above
____ during a standing vacuum test, the system should be checked for leaks. - ✅✅✅CORRECT -2.5
mm Hg
The primary water source for a recovery unit condensing coil is _____. - ✅✅✅CORRECT -local
municipal water supply
When recharging a refrigeration system with R-11, what vaporpressure is necessary in the shells before
changing with liquid? - ✅✅✅CORRECT -16.9" Hg vacuum
, After recovering the liquid refrigerant you must: - ✅✅✅CORRECT -recover the vapor refrigerant
According to the EPA there is approximately _____ refrigerant vapor left in an average 350 ton R-11
chiller at 0 psig pressure once all the R-11 liquid has been removed. - ✅✅✅CORRECT -100 pounds
Charging refrigerant liquid into a refrigeration system when it is under a 29 inch Hg vacuum can cause
the: - ✅✅✅CORRECT -system water to freeze
A system does not have to be evacuated all the way to the required level when: - ✅✅✅CORRECT -
leaks in the appliance make evacuation to the prescribed level unattainable
Which of the foloowing repairs would ALWAYS be considered "major" under EPA's - ✅✅✅CORRECT -
replacement of evaporator coil
Under EPA's regulation's _______ is used to pressurize a low pressure chiller for the purpose of opening
the system for a non major repair? - ✅✅✅CORRECT -warming the refrigerant
If you are using a recovery machine manufactored AFTER 11-15-93 you must evacuate an low pressure
appliance to _______ before making a major repair. - ✅✅✅CORRECT -25 mm of Hg absolute
After reaching the required recovery vacuum on a chiller, you should - ✅✅✅CORRECT -Wait for at
least a few minutes to see if the system pressure rises, indicating that there is till refrigerant in a liquid
form or in the oil
The pressure corresponding to 32 F for R-123 - ✅✅✅CORRECT -20 inches of HG vacuum
When evacuating a system the use of too large a vacuum pump can cause? - ✅✅✅CORRECT -
trapped water to freeze
Refrigerant-11 at a pressure of 17 inches HG vacuum has a saturation temperature of: -
✅✅✅CORRECT -35F
