NAFA CAFS Sample Questions
Having larger fibers on the air entering side and smaller fibers on the
air exit side is called? - Correct Answer ✔ ✔ Graduated density
Baffle grease filters must meet the requirements of NFPA Standard? -
Correct Answer ✔ ✔ 96
Lofted Glass Media can be found most often in what style(s) of filters?
- Correct Answer ✔ ✔ Pocket Filters or Rigid Filters
Minipleats have more media than most extended surface filters
providing two advantages -- what are they? - Correct Answer ✔ ✔
Lower initial pressure drop & longer life in service
Filter efficiency is best determined by a(n)....? - Correct Answer ✔
✔ Independent laboratory ANSI/ASHRAE 52.2 test
In order to be classified a HEPA filter, the efficiency must be at least? -
Correct Answer ✔ ✔ 99.97% on 0.3 micrometer particles
, ULPA stands for? - Correct Answer ✔ ✔ Ultra-Low Penetration
Air Filter
Two types of gasketing for HEPA's are? - Correct Answer ✔ ✔
Closed Cell Neoprene and Non-Newtonian Gel Seal
Electronic Air Cleaners cannot be tested for loading using the ASHRAE
52.2 test because? - Correct Answer ✔ ✔ The carbon in the Test
Dust shorts out the electrical connections of the unit.
One advantage of a self-contained ESP is? - Correct Answer ✔ ✔
Washable cell/capture of smaller particles/good for source
capture/portable
ANSI/ASHRAE 52.2 averages particles sizes in how many broad
composite categories? - Correct Answer ✔ ✔ Three - E1, E2 & E3
What are the ranges of the ASHRAE 52.2 averages? - Correct Answer
✔ ✔ 0.3 to 1..0 to 3..0 to 10.0
Having larger fibers on the air entering side and smaller fibers on the
air exit side is called? - Correct Answer ✔ ✔ Graduated density
Baffle grease filters must meet the requirements of NFPA Standard? -
Correct Answer ✔ ✔ 96
Lofted Glass Media can be found most often in what style(s) of filters?
- Correct Answer ✔ ✔ Pocket Filters or Rigid Filters
Minipleats have more media than most extended surface filters
providing two advantages -- what are they? - Correct Answer ✔ ✔
Lower initial pressure drop & longer life in service
Filter efficiency is best determined by a(n)....? - Correct Answer ✔
✔ Independent laboratory ANSI/ASHRAE 52.2 test
In order to be classified a HEPA filter, the efficiency must be at least? -
Correct Answer ✔ ✔ 99.97% on 0.3 micrometer particles
, ULPA stands for? - Correct Answer ✔ ✔ Ultra-Low Penetration
Air Filter
Two types of gasketing for HEPA's are? - Correct Answer ✔ ✔
Closed Cell Neoprene and Non-Newtonian Gel Seal
Electronic Air Cleaners cannot be tested for loading using the ASHRAE
52.2 test because? - Correct Answer ✔ ✔ The carbon in the Test
Dust shorts out the electrical connections of the unit.
One advantage of a self-contained ESP is? - Correct Answer ✔ ✔
Washable cell/capture of smaller particles/good for source
capture/portable
ANSI/ASHRAE 52.2 averages particles sizes in how many broad
composite categories? - Correct Answer ✔ ✔ Three - E1, E2 & E3
What are the ranges of the ASHRAE 52.2 averages? - Correct Answer
✔ ✔ 0.3 to 1..0 to 3..0 to 10.0
