TM 9-2350-267-10CREW CONTROLS AND INDICATORS - ContinuedVentilated Face Piece System (VFPS)Control Box On/Off SwitchWhen ON, this switch activates air puri-fier unit and supplies electrical power foroperation of M3 heaters.This switch is a two-position toggleswtich, covered by a red guard.The switch lever is positioned up for ONand down for OFF.Control Box Power Indicator LampThis blue-green lamp lights when on/offswitch is positioned ON.M3 Heater Control KnobWarms breathable filter air received at eachventilated face piece (VFP).When NBC power control box on/off switchis on, control knob at each heater can beturned on and adjusted for desired heater.Turning control knob clockwise increasesheat. Each heater IS individually controlled.2-19
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business