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Changes to Step #9

Edit by Guy Kuo

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[title] Configuration for HALOof PAPR with Fan (PAPR)
[* green] A fan draws room air through an anesthesia viral filter to fill the halohood bag. Full mobility is possible with a 12 volt battery pack.
[title] Configuration for HALOof PAPR with Fan (PAPR)
[* green] A fan draws room air through an anesthesia viral filter to fill the halohood bag. Full mobility is possible with a 12 volt battery pack.
[* black] 51 mm blower fan with 200 pascal static pressure yields about ideal flow. 150 pascal static pressure capacity is probable minimum that allows unencumbered activity.
[* icon_caution] Always verify your HALOBunny Science PAPR maintains positive to neutral pressure during inspiration - NEVER negative.
[* icon_note] 51 mm blower fan provides adequate air clearance and permits walking and stair climbing. I have spent hours in the HaloBunny PAPR with gas sample monitoring to verify flow adequacy.
[* icon_note] Alternative configuration is to replace both flutter valves with another two viral filters. This allows use of HaloBunny Science PAPR in sterile environments without need for another mask inside PAPR.
[* icon_caution] Always verify your HALOBunny Science PAPR maintains positive to neutral pressure during inspiration - NEVER negative.
[* icon_note] 51 mm blower fan provides adequate air clearance and permits walking and stair climbing. I have spent hours in the HaloBunny PAPR with gas sample monitoring to verify flow adequacy.
[* icon_note] Alternative configuration is to replace both flutter valves with another two viral filters. This allows use of HaloBunny Science PAPR in sterile environments without need for another mask inside PAPR.