EPA 608 Type II Sample Test Questions
How must you recover refrigerant from a parallel system and why?
a. Isolate a parallel compressor system in order to recover refrigerant.
Failure to isolate a parallel compressor system will cause an open
equalization connection that will prevent refrigerant recovery.
b. Do not isolate a parallel compressor system in order to recover refrigerant.
Isolation will cause an open equalization connection that will prevent
refrigerant recovery
c. Do not isolate a parallel compressor system unless valves are provided, in
order to recover refrigerant. Isolation will cause an open equalization
connection that will prevent refrigerant recovery
d. Do not isolate a parallel compressor system unless access valves are in
series. Isolation will cause an open equalization connection that will
prevent refrigerant recovery - ------------ANS: a. Isolate a parallel compressor system
in order to recover refrigerant.
Failure to isolate a parallel compressor system will cause an open
equalization connection that will prevent refrigerant recovery.
All recovery cylinders are ______ rated
density
pressure
temperature
volume - ------------ANS: pressure
, Comfort cooling chillers and all other equipment with over 50 pounds of
refrigerant with an annual leak rate of ___ % requires repair under EPA
regulations:
a. 0
b. 15
c. 35
d. 50 - ------------ANS: b. 15
Describe ways to speed up the recovery.
a. Pack the recovery cylinder in ice and / or applying heat to the appliance.
b. Recover as much as possible in the liquid phase. In order to recover
liquid refrigerant, you must connect one hose to the system's liquid line.
After recovering liquid refrigerant, any remaining vapor is condensed by
the recovery system.
c. a and b
d. None of the above - ------------ANS: c. a and b
Describe ways you can visually look for leaks.
a. Using soap bubbles
b. Looking for traces of oil
c. Excessive superheat, caused by low refrigerant charge
d. All the above - ------------ANS: d. All the above
Exceptions to the required evacuation levels for recovery equipment that require
an appliance be evacuated to only 0 psig apply to appliances that:
How must you recover refrigerant from a parallel system and why?
a. Isolate a parallel compressor system in order to recover refrigerant.
Failure to isolate a parallel compressor system will cause an open
equalization connection that will prevent refrigerant recovery.
b. Do not isolate a parallel compressor system in order to recover refrigerant.
Isolation will cause an open equalization connection that will prevent
refrigerant recovery
c. Do not isolate a parallel compressor system unless valves are provided, in
order to recover refrigerant. Isolation will cause an open equalization
connection that will prevent refrigerant recovery
d. Do not isolate a parallel compressor system unless access valves are in
series. Isolation will cause an open equalization connection that will
prevent refrigerant recovery - ------------ANS: a. Isolate a parallel compressor system
in order to recover refrigerant.
Failure to isolate a parallel compressor system will cause an open
equalization connection that will prevent refrigerant recovery.
All recovery cylinders are ______ rated
density
pressure
temperature
volume - ------------ANS: pressure
, Comfort cooling chillers and all other equipment with over 50 pounds of
refrigerant with an annual leak rate of ___ % requires repair under EPA
regulations:
a. 0
b. 15
c. 35
d. 50 - ------------ANS: b. 15
Describe ways to speed up the recovery.
a. Pack the recovery cylinder in ice and / or applying heat to the appliance.
b. Recover as much as possible in the liquid phase. In order to recover
liquid refrigerant, you must connect one hose to the system's liquid line.
After recovering liquid refrigerant, any remaining vapor is condensed by
the recovery system.
c. a and b
d. None of the above - ------------ANS: c. a and b
Describe ways you can visually look for leaks.
a. Using soap bubbles
b. Looking for traces of oil
c. Excessive superheat, caused by low refrigerant charge
d. All the above - ------------ANS: d. All the above
Exceptions to the required evacuation levels for recovery equipment that require
an appliance be evacuated to only 0 psig apply to appliances that:
