EPA 608 TYPE 3 EXAM QUESTIONS WITH
CORRECT ANSWERS
.______ is the process of removing refrigerant in any condition from storing it in
an external container without necessary testing or processing it in any way -
ANSWER-Recovering
._______ refers to the process of cleaning refrigerant by oil seperation 7 single
or multiple passes through filter driers which reduce moisture and acidity? -
ANSWER-Recycling
.A compressor heater is used to: - ANSWER-reduce the amount of refrigerant in
the lubricating oil
.A cyclinder with a grey body and yellow top is designed to hold: - ANSWER-
recovered refrigerant
.A hydrostatic tube test kit is used to: - ANSWER-determine if a tube leaks
.A passive system-dependent recovery device for small appliances: - ANSWER-
captures refrigerant in a non-pressurized container
.A reciprocating compressor should not be energized if the - ANSWER-discharge
service valve has closed
,.A recovery cyclinder which is 1/2 full of recovered R-410A @ 90*F, in the
absence of non-condensables will be presurized to: - ANSWER-300 psig.
.A recovery cylinder which is 1/2 full of recovered R-22 at normal room
temperature about 75, in the absence of non-condensables, will be pressurized
to: - ANSWER-75 psig
.A refrigerant that can be used as a direct service drop in subsitute for R-12 in a
small appliance is: - ANSWER-NONE
.A rupture disc on a recovery vessel for a low pressure refrigerants relieves at: -
ANSWER-15 psig
.A standard vacuum pump designed for evacuation & dehydration can: -
ANSWER-be only used as a recovery device in combination with a non
pressurized container
.A system can be evacuated to only atmospheric pressure when: - ANSWER-
leaks in the appliance make the evacuation to the prescribed level unattainable
.A system does not have to be evacuated all the way to the required level when:
- ANSWER-leaks in the appliance make evacuation to the prescribed level
unattainable
.A system is considered dehydrated when: - ANSWER-the vacuum indicator
shows you have reached & held the required finished vacuum
.A system is dehydrated to: - ANSWER-remove water & water vapor
, .A system is dehydrated to: - ANSWER-remove water and water vapor
.A ternary refrigerant blend is a ____ part mixture - ANSWER-3
.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. - ANSWER-2.5 mm Hg
.According to ASHRAE's 1992 refrigerant safety classification, which
designations is the most safe - ANSWER-A-1
.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. - ANSWER-100 pounds
.According to the EPA which recovery equipment maintenance practice(s)
should be preformed on a regular basis? - ANSWER-check recovery device for
refrigerant leaks
.After reaching the required recovery vacuum on a chiller, you should -
ANSWER-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
.After recovering the liquid refrigerant you must: - ANSWER-recover the vapor
refrigerant
CORRECT ANSWERS
.______ is the process of removing refrigerant in any condition from storing it in
an external container without necessary testing or processing it in any way -
ANSWER-Recovering
._______ refers to the process of cleaning refrigerant by oil seperation 7 single
or multiple passes through filter driers which reduce moisture and acidity? -
ANSWER-Recycling
.A compressor heater is used to: - ANSWER-reduce the amount of refrigerant in
the lubricating oil
.A cyclinder with a grey body and yellow top is designed to hold: - ANSWER-
recovered refrigerant
.A hydrostatic tube test kit is used to: - ANSWER-determine if a tube leaks
.A passive system-dependent recovery device for small appliances: - ANSWER-
captures refrigerant in a non-pressurized container
.A reciprocating compressor should not be energized if the - ANSWER-discharge
service valve has closed
,.A recovery cyclinder which is 1/2 full of recovered R-410A @ 90*F, in the
absence of non-condensables will be presurized to: - ANSWER-300 psig.
.A recovery cylinder which is 1/2 full of recovered R-22 at normal room
temperature about 75, in the absence of non-condensables, will be pressurized
to: - ANSWER-75 psig
.A refrigerant that can be used as a direct service drop in subsitute for R-12 in a
small appliance is: - ANSWER-NONE
.A rupture disc on a recovery vessel for a low pressure refrigerants relieves at: -
ANSWER-15 psig
.A standard vacuum pump designed for evacuation & dehydration can: -
ANSWER-be only used as a recovery device in combination with a non
pressurized container
.A system can be evacuated to only atmospheric pressure when: - ANSWER-
leaks in the appliance make the evacuation to the prescribed level unattainable
.A system does not have to be evacuated all the way to the required level when:
- ANSWER-leaks in the appliance make evacuation to the prescribed level
unattainable
.A system is considered dehydrated when: - ANSWER-the vacuum indicator
shows you have reached & held the required finished vacuum
.A system is dehydrated to: - ANSWER-remove water & water vapor
, .A system is dehydrated to: - ANSWER-remove water and water vapor
.A ternary refrigerant blend is a ____ part mixture - ANSWER-3
.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. - ANSWER-2.5 mm Hg
.According to ASHRAE's 1992 refrigerant safety classification, which
designations is the most safe - ANSWER-A-1
.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. - ANSWER-100 pounds
.According to the EPA which recovery equipment maintenance practice(s)
should be preformed on a regular basis? - ANSWER-check recovery device for
refrigerant leaks
.After reaching the required recovery vacuum on a chiller, you should -
ANSWER-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
.After recovering the liquid refrigerant you must: - ANSWER-recover the vapor
refrigerant
