BioPak 240R-NIOSH User Instruction Manual
47C090, Revision C
Page 21 of 25
Gauge Line Severing
Should the gauge line feeding the pressure
gauge become severed the apparatus will
begin to leak oxygen. To stop the loss of
oxygen reach back and pull up on the quick
disconnect fitting to release the gauge line
and stop the leak. The wearer shall
immediately retire to a safe location and doff
the apparatus.
5.7 Low Temperature Operation
Use of the BioPak in temperatures below
freezing should only be made when the
carbon dioxide scrubber has been
maintained at temperatures above freezing
and installed into the BioPak just prior to
use.
Storage of the carbon dioxide
scrubber below freezing will retard the
start of the absorption reaction and place
the user in danger of carbon dioxide
poisoning.
Note that the oxygen cylinder connection
to the pressure regulator may require
tightening prior to use when the BioPak
is utilized in low temperature situations.
5.8 Facemask Fogging
The mask requires no application of any
type of anti-fogging agent. The internal
surface of the lens is covered with a
permanent anti-fog laminate that will prevent
fogging. The user can still employ the use
of the magnetic wiper to clear dirt or
sheeting water from the lens. Utilization of
the magnetic wiper on the mask will not
remove the laminate film or affect its anti-
fogging properties.
6. DOFFING THE APPARATUS
6.1 Doffing Instructions
1. Retire to a known safe location.
2. Close the oxygen cylinder by rotating
the green housing knob to its full
clockwise position.
3. Doff the apparatus.
DO NOT remove the apparatus until well
clear of the hazardous area.
If wearing a gas-tight chemical suit, DO
NOT remove until decontamination
procedures are complete.
To prevent the growth of germs, bacteria
and mold, conduct turn around
maintenance on the apparatus as quickly
as possible as outlined in the Benchman
manual.
