TM 5-3610-253-14
Section II OPERATING INSTRUCTIONS
Control or Indicator
Function
Blackout Override Switches
Turn off illumination
when doors are opened.
Air Vent
Permits make-up air to
enter as required.
Air Conditioner/Heater Control Unit
Permits selection of air
conditioner or heater
mode of operation and
temperature.
Phase, Frequency, and Voltage Indicator
Monitors electrical
power, phase, frequency,
and voltage.
Level Indicators
Used to level van body.
