EPA 608 UNIVERSAL EXAMS /CORRECT
ANSWERS
1. (TF)CFCs readily decompose in the lower atmosphere and consume
enormous quantities of the OZONE in the process. - ANSWER-True
2. (TF)As part of the EPA's Clean Air Act as well as its subsequent
amendments, the sale of regulated refrigerants to certified technicians
is restricted. - ANSWER-True
3. (TF)HCFC Refrigerants decompose much faster than CFC Refrigerants. -
ANSWER-True
4. (TF)Under Section 608 of the Clean Air Act, only two types of
refrigerant releases are permitted. - ANSWER-False
5. (TF)As of January 1, 1996, CFC refrigerants and any refrigerant that
contained a CFC, such as R-502, can no longer be legally manufactured
in or imported into the US. - ANSWER-True
6. (TF)Carbon Dioxide depletes ozone and does not act as a greenhouse
gas. - ANSWER-False
7. (TF)CFC and HCHC refrigerants are less likely to reach the stratosphere
than other chrorine-containing compounds because they dissolve in
water and readily break down in the atmosphere. - ANSWER-False
8. (TF)Since the liquid-recovery process is significantly faster than vapor
recovery, liquid recovery will reduce the amount of time required to
complete the recovery process. - ANSWER-True
,9. (TF)In most instances, it is recommended that a sample of the
contaminated refrigerant be analyzed at an appropriate testing facility
to determine the extent of the impurities in the refrigerant. - ANSWER-
True
10. (TF)Cylinders of compressed gases shall be transported in a
vertical position, unless loaded into suitably secured racks, or
otherwise secured in an upright position. - ANSWER-False
11. (TF)Many refrigerants have low boiling points and can cause
instant frostbite if liquid touches the skin. - ANSWER-True
12. (TF)Record-keeping for systems that contain refrigerant charges
between 5 pounds and 50 pounds must be maintained for a minimum
of ten years. - ANSWER-False
13. (TF)When soldering and brazing, always use Oxygen for
pressurization. - ANSWER-False
14. (TF) As per EPA regulations, refrigerant cannot change
ownership. - ANSWER-True
15. (TF)When refrigerant is being recovered from a disabled air-
conditioning or refrigeration system, it is a violation of federal
guidelines to leave the recovery process unattended. - ANSWER-True
16. (TF)Checking continuity must be done when a circuit is
energized. - ANSWER-False
, 17. (TF)For proper vacuum level measurement, a vacuum gauge
should be located as close to the vacuum pump as possible. - ANSWER-
False
18. (TF)The UV solution that is added to a system for a ultraviolet
leak detection should circulate for at least 24 hours before attempting
to locate system leaks. - ANSWER-True
19. (TF)When using a system-dependent (passive) recovery system
on an appliance with an operating compressor, run the compressor and
recover the refrigerant from the low side of the system. - ANSWER-
False
20. (TF)Whenever dry nitrogen from a portable cylinder is used in a
service procedure, always install a relief valve in the downstream line
at the inlet of the condenser. - ANSWER-True
21. (TF)When Thermostatic expansion valves (TXV) is used in a
refrigeration system, the receiver should always be installed in the
liquid line at the inlet of the condenser. - ANSWER-False
22. (TF)Non-condensables, if not removed from a system, will cause
lower discharge pressures. - ANSWER-False
23. (TF)Generally, it is appropriate to evacuate high-pressure
systems with large leaks to atmospheric pressure. - ANSWER-True
24. (TF)The ASHRAE Guideline 3-1990 states that if the pressure in a
system rises from 1 mm HG to a level above 2.5 mm HG during a
standing vacuum test, the system should be checked for leaks. -
ANSWER-True.
ANSWERS
1. (TF)CFCs readily decompose in the lower atmosphere and consume
enormous quantities of the OZONE in the process. - ANSWER-True
2. (TF)As part of the EPA's Clean Air Act as well as its subsequent
amendments, the sale of regulated refrigerants to certified technicians
is restricted. - ANSWER-True
3. (TF)HCFC Refrigerants decompose much faster than CFC Refrigerants. -
ANSWER-True
4. (TF)Under Section 608 of the Clean Air Act, only two types of
refrigerant releases are permitted. - ANSWER-False
5. (TF)As of January 1, 1996, CFC refrigerants and any refrigerant that
contained a CFC, such as R-502, can no longer be legally manufactured
in or imported into the US. - ANSWER-True
6. (TF)Carbon Dioxide depletes ozone and does not act as a greenhouse
gas. - ANSWER-False
7. (TF)CFC and HCHC refrigerants are less likely to reach the stratosphere
than other chrorine-containing compounds because they dissolve in
water and readily break down in the atmosphere. - ANSWER-False
8. (TF)Since the liquid-recovery process is significantly faster than vapor
recovery, liquid recovery will reduce the amount of time required to
complete the recovery process. - ANSWER-True
,9. (TF)In most instances, it is recommended that a sample of the
contaminated refrigerant be analyzed at an appropriate testing facility
to determine the extent of the impurities in the refrigerant. - ANSWER-
True
10. (TF)Cylinders of compressed gases shall be transported in a
vertical position, unless loaded into suitably secured racks, or
otherwise secured in an upright position. - ANSWER-False
11. (TF)Many refrigerants have low boiling points and can cause
instant frostbite if liquid touches the skin. - ANSWER-True
12. (TF)Record-keeping for systems that contain refrigerant charges
between 5 pounds and 50 pounds must be maintained for a minimum
of ten years. - ANSWER-False
13. (TF)When soldering and brazing, always use Oxygen for
pressurization. - ANSWER-False
14. (TF) As per EPA regulations, refrigerant cannot change
ownership. - ANSWER-True
15. (TF)When refrigerant is being recovered from a disabled air-
conditioning or refrigeration system, it is a violation of federal
guidelines to leave the recovery process unattended. - ANSWER-True
16. (TF)Checking continuity must be done when a circuit is
energized. - ANSWER-False
, 17. (TF)For proper vacuum level measurement, a vacuum gauge
should be located as close to the vacuum pump as possible. - ANSWER-
False
18. (TF)The UV solution that is added to a system for a ultraviolet
leak detection should circulate for at least 24 hours before attempting
to locate system leaks. - ANSWER-True
19. (TF)When using a system-dependent (passive) recovery system
on an appliance with an operating compressor, run the compressor and
recover the refrigerant from the low side of the system. - ANSWER-
False
20. (TF)Whenever dry nitrogen from a portable cylinder is used in a
service procedure, always install a relief valve in the downstream line
at the inlet of the condenser. - ANSWER-True
21. (TF)When Thermostatic expansion valves (TXV) is used in a
refrigeration system, the receiver should always be installed in the
liquid line at the inlet of the condenser. - ANSWER-False
22. (TF)Non-condensables, if not removed from a system, will cause
lower discharge pressures. - ANSWER-False
23. (TF)Generally, it is appropriate to evacuate high-pressure
systems with large leaks to atmospheric pressure. - ANSWER-True
24. (TF)The ASHRAE Guideline 3-1990 states that if the pressure in a
system rises from 1 mm HG to a level above 2.5 mm HG during a
standing vacuum test, the system should be checked for leaks. -
ANSWER-True.
