EPA 608 Type 3 Exam Questions Fully Solved Latest Update 2025 Already Passed
Type 3 - Answers Technicians maintaining, servicing, repairing or disposing of low-pressure appliances
must be certified as a universal technician or a _______ ___.
enter - Answers Because a low-pressure system operates below atmospheric pressure (in a vacuum),
leaks in the gaskets or fittings will cause air and moisture to ______ the system.
heater - Answers The most efficient method of leak checking a charged, low-pressure refrigeration unit
is to pressurize the system by the use of controlled hot water or ______ blankets.
nitrogen - Answers When unable to heat a low-pressure system for leak-checking, use ______ to
increase pressure.
10 - Answers When pressurizing a low-pressure system with nitrogen, do not exceed _____ psig.
rupture - Answers Exceeding 10 psig when pressurizing a low-pressure system, can cause the _____ disc
to fail.
removed - Answers When leak testing a water box, be certain the water has been ______ before placing
the leak detector probe through the drain valve.
hydrostatic - Answers When leak-testing a tube, use a _______ tube test kit.
seal - Answers Systems with open drive compressors are prone to leaks at the shaft _____.
hot - Answers For the purpose of opening the system for a non-major repair, controlled ______ water
can be used to pressurize a system.
high pressure - Answers A recovery unit's _____ _____ cut-out is set for 10 psig when evacuating the
refrigerant from a low-pressure chiller.
15 - Answers A low-pressure chiller and a rupture disc on a low-pressure recovery vessel relieves at
_____ psig.
liquid vapor - Answers Refrigerant recovery from a system using R-11 or R-123 starts with ______
removal and is followed by _____ recovery.
vapor - Answers A substantial amount of _____ will remain in the appliance after all liquid is removed.
100 - Answers An average 350 ton R-11 chiller at 0 psig still contains _____ lbs. of vapor after all the
liquid has been removed.
circulated - Answers Water must be ______ through the tubes when evacuating refrigerant in order to
prevent freezing the water.
condenser - Answers Most low-pressure recovery machines utilize a water-cooled ______ that is
connected to the municipal water supply.
Type 3 - Answers Technicians maintaining, servicing, repairing or disposing of low-pressure appliances
must be certified as a universal technician or a _______ ___.
enter - Answers Because a low-pressure system operates below atmospheric pressure (in a vacuum),
leaks in the gaskets or fittings will cause air and moisture to ______ the system.
heater - Answers The most efficient method of leak checking a charged, low-pressure refrigeration unit
is to pressurize the system by the use of controlled hot water or ______ blankets.
nitrogen - Answers When unable to heat a low-pressure system for leak-checking, use ______ to
increase pressure.
10 - Answers When pressurizing a low-pressure system with nitrogen, do not exceed _____ psig.
rupture - Answers Exceeding 10 psig when pressurizing a low-pressure system, can cause the _____ disc
to fail.
removed - Answers When leak testing a water box, be certain the water has been ______ before placing
the leak detector probe through the drain valve.
hydrostatic - Answers When leak-testing a tube, use a _______ tube test kit.
seal - Answers Systems with open drive compressors are prone to leaks at the shaft _____.
hot - Answers For the purpose of opening the system for a non-major repair, controlled ______ water
can be used to pressurize a system.
high pressure - Answers A recovery unit's _____ _____ cut-out is set for 10 psig when evacuating the
refrigerant from a low-pressure chiller.
15 - Answers A low-pressure chiller and a rupture disc on a low-pressure recovery vessel relieves at
_____ psig.
liquid vapor - Answers Refrigerant recovery from a system using R-11 or R-123 starts with ______
removal and is followed by _____ recovery.
vapor - Answers A substantial amount of _____ will remain in the appliance after all liquid is removed.
100 - Answers An average 350 ton R-11 chiller at 0 psig still contains _____ lbs. of vapor after all the
liquid has been removed.
circulated - Answers Water must be ______ through the tubes when evacuating refrigerant in order to
prevent freezing the water.
condenser - Answers Most low-pressure recovery machines utilize a water-cooled ______ that is
connected to the municipal water supply.
