EPA 609 TECHNICIAN CERTIFICATION | FROM QUESTION
TO PERFECTION| STUDY WITH CONFIDENCE!
Course Code:
Course Title:
Programme:
Academic Year: 2026/2027
Duration: 2 Hours
Total Marks: 70%
Candidate Instructions:
1) Write your Registration Number on every answer booklet used.
2) Answer ALL questions in Section A and ANY TWO (2) questions in Section B.
3) Read each question carefully before answering.
4) Begin each question on a new page.
5) The marks for each question are indicated in brackets.
6) This paper consists of several printed pages, including this page.
7) Ensure your copy is complete before the examination begins.
8) Unauthorized materials and communication with other candidates are not permitted.
Turn Over.
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, 1. T/F Ozone at ground level ans at Stratosphere is a harmful pollutant Answer: FALSE
2. For determining the Ozone Depletion Potential __________ having been assigned a factor of
1 Answer: CFC-11
3. Ozone layer absorbs and scatters __________ form the sun Answer: Ultraviolet light
4. T/F R-134 is a chlorine-free refrigerant Answer: TRUE
5. a refillable refrigerant cylinder must not be filled above _________ of its full capacity
Answer: 80%
6. T/F Ester-based synthetic oils can be mixed with oils Answer: FALSE
7. An award of up to ___________ may be paid to a person suppplying information that leads to
a penalty against a technician who is intentially venting Answer: $10,000
8. MVAC systems being disposed must be evacuated to _____________ of mercury before
being scrapped Answer: 4 INCHES
9. Since _______________ it is no longer legal for CFCs to be manufactured or imported into
the United States Answer: JAN 1ST, 1996
10. Since ___________________ it is illegal to vent substitutes for CFC and HCFC refrigerants
Answer: NOV 15, 1995
11. Each chlorine ion are able to destroy ___________________ ozone molecules Answer:
100,000
12. Lifetime of CFSs is believed to range from ________ years Answer: 20 TO 100
13. Ozone molecules consists of _______________ atoms of oxygen Answer: THREE
14.Non-condensables in a refrigeration system result in a ________________ discharge pressure
Answer: higher
15. T/F Ozone depletion increases global warming Answer: TRUE
16. T/F If a technician is already trained and certified to handle HFC-134a Answer: FALSE
17.The Clean Air Act (CAA) of _____________ directs EPA to establish requirements Answer:
1990
18. Over the road refrigeration units and R-22 (HCFC) air conditioning Answer: such as that
found in buses, also require Section ____________ certification, 608
19. Moisture level in Recycled R-12(CFC-12) that has been directly removed from Answer: and
intended to be returned to, a mobile air-conditioning system cannot exceed ________________
PPM by weight, 15
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
TO PERFECTION| STUDY WITH CONFIDENCE!
Course Code:
Course Title:
Programme:
Academic Year: 2026/2027
Duration: 2 Hours
Total Marks: 70%
Candidate Instructions:
1) Write your Registration Number on every answer booklet used.
2) Answer ALL questions in Section A and ANY TWO (2) questions in Section B.
3) Read each question carefully before answering.
4) Begin each question on a new page.
5) The marks for each question are indicated in brackets.
6) This paper consists of several printed pages, including this page.
7) Ensure your copy is complete before the examination begins.
8) Unauthorized materials and communication with other candidates are not permitted.
Turn Over.
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, 1. T/F Ozone at ground level ans at Stratosphere is a harmful pollutant Answer: FALSE
2. For determining the Ozone Depletion Potential __________ having been assigned a factor of
1 Answer: CFC-11
3. Ozone layer absorbs and scatters __________ form the sun Answer: Ultraviolet light
4. T/F R-134 is a chlorine-free refrigerant Answer: TRUE
5. a refillable refrigerant cylinder must not be filled above _________ of its full capacity
Answer: 80%
6. T/F Ester-based synthetic oils can be mixed with oils Answer: FALSE
7. An award of up to ___________ may be paid to a person suppplying information that leads to
a penalty against a technician who is intentially venting Answer: $10,000
8. MVAC systems being disposed must be evacuated to _____________ of mercury before
being scrapped Answer: 4 INCHES
9. Since _______________ it is no longer legal for CFCs to be manufactured or imported into
the United States Answer: JAN 1ST, 1996
10. Since ___________________ it is illegal to vent substitutes for CFC and HCFC refrigerants
Answer: NOV 15, 1995
11. Each chlorine ion are able to destroy ___________________ ozone molecules Answer:
100,000
12. Lifetime of CFSs is believed to range from ________ years Answer: 20 TO 100
13. Ozone molecules consists of _______________ atoms of oxygen Answer: THREE
14.Non-condensables in a refrigeration system result in a ________________ discharge pressure
Answer: higher
15. T/F Ozone depletion increases global warming Answer: TRUE
16. T/F If a technician is already trained and certified to handle HFC-134a Answer: FALSE
17.The Clean Air Act (CAA) of _____________ directs EPA to establish requirements Answer:
1990
18. Over the road refrigeration units and R-22 (HCFC) air conditioning Answer: such as that
found in buses, also require Section ____________ certification, 608
19. Moisture level in Recycled R-12(CFC-12) that has been directly removed from Answer: and
intended to be returned to, a mobile air-conditioning system cannot exceed ________________
PPM by weight, 15
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
