When the remote air supply (1) is connected and turned on, air is continuously supplied through a filter (3) to the
regulator (4). When the user inhales, air flows from the regulator (4) through the breathing tube (5) to the face piece (6).
The EBA is equipped with vent tubes (7) which provide cool air throughout the encapsulating protective suit. The vent
tubes (7) receive cooling air from the remote air (1) supply through the filter (3).
If the remote air supply (1) fails, the regulator (4) will automatically switch from the remote air supply (1) to the EBA
compressed air bottle (8). The compressed air bottle (8) furnishes the user with emergency air through the regulator (4)
and breathing tube (5) to the face piece (6).
Limited air supply in the tether mode. Leave the area immediately when the EBA
warning light begins to flash. A flashing warning light indicates the remote air supply has
failed and less than 6 to 8 minutes of air at a rate of 40 liters/minute is available from the
EBA. Failure to leave the area and decontaminate immediately could result in personnel
death due to suffocation.
A battery (9) powered warning light (10) blinks when the remote air supply (1) fails and the emergency compressed air
bottle (8) pressure drops below 1,950 PSIG (about 6 to 8 minutes at 40 liters per minute to decontaminate and remove
the encapsulating protective suit). The warning light (10) is constantly on when the EBA is pressurized with a full
compressed air bottle (8) to indicate the system is operating properly.