Cessna TURBO CENTURION T210M 1978 Pilot Operating Handbook page 175

CESSNA
MODELT210M
SECTION 7
AIRPLANE
&
SYSTEMS DESCRIPTIONS
battery cart), the avionics power switch should be turned off, and the
master switch turned on.
The ground service plug receptacle circuit incorporates a polarity
reversal protection. Power from the external power source will flow only if
the ground service plug is correctly connected to the airplane. If the plug is
accidentally connected backwards, no power will flow to the electrical
system, thereby preventing any damage to electrical equipment.
The battery and external power circuits have been designed to com-
pletely eliminate the need to" jumper" across the battery contactor to close
it for charging a completely " dead" battery. A special fused circuit in the
external power system supplies the needed "jumper" across the contacts
so that with a "dead" battery and an external power source applied, turning
on the master switch will close the battery contactor.
LIGHTING SYSTEMS
EXTERIOR LIGHTING
Conventional navigation lights are located on the wing tips and tail
stinger, and dual landing lights are installed in the cowl nose cap .
Additional lighting is available and includes a strobe light on each wing
tip, a flashing beacon on top of the vertical stabilizer, and two courtesy
lights, one under each wing, just outboard of the cabin door. The courtesy
lights are operated by a switch located on the left rear door post. All
exterior lights, except the courtesy lights, are controlled by rocker-type
switches on the left switch and control panel. The switches are on in the up
position and off in the down position.
The flashing beacon should not be used when flying through clouds or
overcast; the flashing light reflected from water droplets or particles in the
atmosphere, particularly at night, can produce vertigo and loss of orienta-
tion.
The high intensity strobe lights will enhance anti-collision protection.
However, the lights should be turned off when taxiing in the vicinity of
other airplanes, or during night flight through clouds, fog or haze.
INTERIOR LIGHTING
Instrument and control panel lighting is provided by flood and integral
lighting, with electroluminescent and post lighting also available. Rheos-
tats and control knobs, located on the left switch and control panel, control
the intensity of all lighting. The following paragraphs describe the
various lighting systems and their controls.
7-39