Filters

Q. How often is the HEPA filter changed?

The PAPRFC3 HEPA filter is a high efficiency particulate filter that should generally be changed when airflow becomes restricted or falls below the minimum airflow set by NIOSH –6 CFM. If this occurs, EVA will sound an audible low flow alarm. Please reference HEPA filter article on the healthcare page: https://www.bullard.com/healthcare/article/hepa-filters-for-covid-19

Q. What hazards will the PAPRFC3 HEPA filter remove?

The PAPRFC3 HEPA filter is a particulate filter only and filters 99.97% of 0.3-micron particulates, including bacteria and viruses. To put this into perspective, an N95 mask filters at least 95% of 0.3-micron particulates. Most viruses and bacteria are 0.3-micron. 

Q. What is the shelf life for my EVA HEPA filter (PAPRFC3)?

These have a 10-year shelf life if unopened and stored in proper conditions. 

Q. Will airflow slowly decrease as my HEPA filter becomes clogged?

No. EVA features active airflow technology that automatically speeds up the blower unit motor, as airflow diminishes, in order to maintain the airflow setting selected by the user. This technology works exactly like the cruise control in your automobile. 

Q. Which PAPR filter should I use for COVID-19?

A HEPA filter is needed to prevent exposure to the COVID-19 virusThe Bullard PAPRFC3 HEPA filter is designed for the EVA and EVAHLThis filter should generally be changed when airflow becomes restricted or falls below the minimum airflow set by NIOSH –6 CFM. If this occurs, EVA will sound an audible low flow alarm. 

 

Q. Is an EVA filter reusable?

The PAPRFC3 HEPA filter is a high efficiency particulate filter that should generally be changed when airflow becomes restricted or falls below the minimum airflow set by NIOSH –6 CFM. If this occurs, EVA will sound an audible low flow alarm. 

Q. Should an EVA filter be removed between uses?

The installed filter does not need to be removed when the PAPR is not in useThe unit can be disinfected with the filter in placeThe PAPRFC3 HEPA filter is a high efficiency particulate filter that should generally be changed when airflow becomes restricted or falls below the minimum airflow set by NIOSH –6 CFM. If this occurs, EVA will sound an audible low flow alarm. 

Q. What particulates are filtered by an EVA HEPA filter (PAPRFC3)?

The PAPRFC3 HEPA filter is a particulate filter only and filters 99.97% of 0.3-micron particulates, including bacteria and viruses. To put this into perspective, an N95 mask filters at least 95% of 0.3-micron particulates. Most viruses and bacteria are 0.3-micron.