e. Expansible Van (M820, M820A1, M820A2) (Contd).
An instruction plate near the circuit breaker panel lists circuits
controlled by each switch.
Circuit breaker panel controls electric power received from outside source.
Air conditioner vent runs along entire length of ceiling and allows air to circulate
(M820 and M820A2).
Heater thermostat regulates heater temperature.
Hydraulic Iiftgate auxiliary switch raises and lowers hydraulic Iiftgate when
external power is in use (M820A2 only).
Fire extinguishers are mounted on van front and rear walls.
Telephone jack connects van telephone to outside lines.
Van body expanding and retracting wrench is used to expand and retract
Side panel lock wrench is used to lock outer edges of van roof, corner posts, and
end panels when van is expanded.
Plate contains instructions for operation of van.
Blackout main switch is turned on for blackout operations.
Emergency light switch is turned on when normal service lights fail.
Side doors are used by personnel when van is expanded.