SYSTEM LAYOUT
ROBD2 USER’S GUIDE SEPTEMBER 2016
6
Vent port
This port vents the excess flow of gas not used during inhalation and exhalation and
also limits the pilot mask pressure.
Important:
A filtered vent plug has been installed into the vent port. This vent
plug will provide a slight positive pressure to the breathing mask. If the absence
of positive pressure is desired, remove the threaded plug. When the instrument is
not being used, reinstall the plug. This vent plug should only be hand tightened.
Do not install any other type of fitting into this port, as the breathing loop may
become over-pressurize and cause damage to the instrument.
Note:
Removing the vent plug does not diminish the amount of gas, that the
subject under test receives, when inhaling.
