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[title] Configuration for HALO Fan (PAPR)
[* green] A fan draws room air through an anesthesia viral filter to fill the halo bag. Full mobility is possible with a 12 volt battery pack.
[* black] 51 mm blower fan with 200 pascal static pressure is about ideal. 150 pascal static pressure capacity is probable minimum that allows unencumbered activity.
[* icon_caution] Always verify your HALO maintains positive pressure even during inspiration.
[* icon_note] I have successfully worn a lower performance single filter/60 mm tubaxial fan configuration for several hours. Walked around my hospital and even rounded on patients. One can be mobile, but definitely cannot move fast due to CO2 clearance rate with lower performance fan.
[*
icon_note] 51 mm blower fan provides much betteradequate air clearance and permits brisk walking and stair climbing. Results were so superior with 51 mm blower fan that Halo now has integrated mountThis is my recommended configuration for the blower fan. Old, tubaxial fan mount has been discontinued.Halo PAPR
[* black] If 200 gm massviolet] Alternative configuration is to replace both flutter valves with another two viral filters. This allows use of HALO and fan are uncomfortable attach a strap spanning top of haloHalo PAPR in sterile environments without need for another mask inside PAPR.
[* icon_note] I have successfully worn a lower performance single filter/60 mm tubaxial fan configuration for several hours. Walked around my hospital and even rounded on patients. One can be mobile, but definitely cannot move fast due to CO2 clearance rate with lower performance fan.
[*
icon_note] 51 mm blower fan provides much betteradequate air clearance and permits brisk walking and stair climbing. Results were so superior with 51 mm blower fan that Halo now has integrated mountThis is my recommended configuration for the blower fan. Old, tubaxial fan mount has been discontinued.Halo PAPR
[* black] If 200 gm massviolet] Alternative configuration is to replace both flutter valves with another two viral filters. This allows use of HALO and fan are uncomfortable attach a strap spanning top of haloHalo PAPR in sterile environments without need for another mask inside PAPR.

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