OPERATING AUXILIARY EQUIPMENT (continued)
To pull in fresh air, pull down air duct control handle (2) in drivers compartment. Turn
VENTILATOR BLOWER switch (3) to INTAKE.
To clear out smoke, pull down on air duct control handle (2) and turn VENTILATOR
BLOWER switch (3) to EXHAUST.
If automatic fire extinguishing system activates, ventilator blower turns to exhaust mode.
Open vent after extinguisher discharge.