NAFA CAFS ACTUAL FULL SOLUTION 2026
QUESTIONS WITH SOLUTIONS GRADED A+
⩥ What is removal efficiency. Answer: The fraction of the contaminate
that once in contact with the media is removed by either physical or
chemical means
⩥ What is Capacity. Answer: The amount the media is capable of
removing - this determines the life of the filter
⩥ What are two types of filter options. Answer: partial bypass, total
retention
⩥ What is the ASHRAE standard 62.1/62.2. Answer: Ventilation for
acceptable indoor air quality to specific minimum ventilation rates IAQ
which will be acceptable to humans and are intended to avoid adverse
health effects
⩥ How many classifications of air is there?. Answer: 4
⩥ What are the IAQ testing applications. Answer: Particulate
contaminants, Gas phase, systems integrity, comfort parameters
,⩥ What are the control strategies. Answer: Filtration, source removal,
Dilution
⩥ Min demonstrated overspray filter eff must be at least. Answer: 98%
⩥ What is the min eff for a Super ULPA. Answer: 99.9999% on MPPS
⩥ What are the factors affecting ESP design and efficiency. Answer:
partical size, velocity through filter, voltage on ionizer and collector,
collector plate spacing, collector plate loading, ionizer spacing and
ozone
⩥ What are the types of Microorganisms. Answer: Virus, Bacteria, Fungi
⩥ A baghouse is composed of. Answer: house, hoppers, tubesheet and
plenum
⩥ A typical oil mist electrostatic presipitator has what sections (inlet to
outlet). Answer: Baffle, ionizer, collecting, fan and optional after filter
⩥ PCO has how many types of reactor configurations. Answer: 4
⩥ In the filter industry, a manometer is used to measure what?. Answer:
Pressure drop across the filter
, ⩥ Airflow through a booth must be?. Answer: high enough to keep the
concentration of VOC vapor below 25% of its lowest explosive limit
⩥ ULPA stands for?. Answer: Ultimate low penetration Air Filter
⩥ Name the components of a HEPA filter. Answer: Media, separators,
filter pack, sealant, framing, gasketing
⩥ What size particles behave like a gas, have negligible settling rates
and are affected by Brownian Motion. Answer: Particals less than .1
microns
⩥ A 2 stage air cleaner utilizes what 2 things?. Answer: An Ionizer
section, a collector section
⩥ Name the types of HEPA separator styles. Answer: 'aluminum and
mini pleat
⩥ Name the different HEPA frame material. Answer: Partical board,
plywood, extruded alum, formed sheet metal
⩥ What is media velocity. Answer: the speed of the air as it moves
through the filter media
QUESTIONS WITH SOLUTIONS GRADED A+
⩥ What is removal efficiency. Answer: The fraction of the contaminate
that once in contact with the media is removed by either physical or
chemical means
⩥ What is Capacity. Answer: The amount the media is capable of
removing - this determines the life of the filter
⩥ What are two types of filter options. Answer: partial bypass, total
retention
⩥ What is the ASHRAE standard 62.1/62.2. Answer: Ventilation for
acceptable indoor air quality to specific minimum ventilation rates IAQ
which will be acceptable to humans and are intended to avoid adverse
health effects
⩥ How many classifications of air is there?. Answer: 4
⩥ What are the IAQ testing applications. Answer: Particulate
contaminants, Gas phase, systems integrity, comfort parameters
,⩥ What are the control strategies. Answer: Filtration, source removal,
Dilution
⩥ Min demonstrated overspray filter eff must be at least. Answer: 98%
⩥ What is the min eff for a Super ULPA. Answer: 99.9999% on MPPS
⩥ What are the factors affecting ESP design and efficiency. Answer:
partical size, velocity through filter, voltage on ionizer and collector,
collector plate spacing, collector plate loading, ionizer spacing and
ozone
⩥ What are the types of Microorganisms. Answer: Virus, Bacteria, Fungi
⩥ A baghouse is composed of. Answer: house, hoppers, tubesheet and
plenum
⩥ A typical oil mist electrostatic presipitator has what sections (inlet to
outlet). Answer: Baffle, ionizer, collecting, fan and optional after filter
⩥ PCO has how many types of reactor configurations. Answer: 4
⩥ In the filter industry, a manometer is used to measure what?. Answer:
Pressure drop across the filter
, ⩥ Airflow through a booth must be?. Answer: high enough to keep the
concentration of VOC vapor below 25% of its lowest explosive limit
⩥ ULPA stands for?. Answer: Ultimate low penetration Air Filter
⩥ Name the components of a HEPA filter. Answer: Media, separators,
filter pack, sealant, framing, gasketing
⩥ What size particles behave like a gas, have negligible settling rates
and are affected by Brownian Motion. Answer: Particals less than .1
microns
⩥ A 2 stage air cleaner utilizes what 2 things?. Answer: An Ionizer
section, a collector section
⩥ Name the types of HEPA separator styles. Answer: 'aluminum and
mini pleat
⩥ Name the different HEPA frame material. Answer: Partical board,
plywood, extruded alum, formed sheet metal
⩥ What is media velocity. Answer: the speed of the air as it moves
through the filter media
