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Section 7
Systems Description
Model G58
STARTERS
Starters are relay-controlled and are actuated by rotary type,
momentary-on switches incorporated in the magneto/start
switches located on the pilot's subpanel. To energize the
starter circuit, hold the magneto/start switch in the START
position.
Whenever electrical power is being supplied to either the left or
right starter, the G1000 alerting system provides a yellow [L
START ENGD] or [R START ENGD] caution alert.
EXTERNAL POWER
An external power receptacle is located in the outboard side of
the left nacelle to facilitate connecting a 28-vdc external power
unit to the airplane. The power unit should be capable of deliv-
ering at least 300 amperes for starting. Make certain that the
battery switches are ON, all avionics and electrical switches
OFF, and the batteries are in the system before connecting an
external power unit. This protects the electronic voltage regula-
tors and associated electrical equipment from voltage tran-
sients (power fluctuations). If polarity is reversed, a diode in
the coil circuit will prevent contactor operation.
The Bus Tie relay closes automatically when the external
power is on line to apply external power to the left and right
buses.
LIGHTING SYSTEM
INTERIOR LIGHTING
Instrument Panel lighting is controlled by two switches on the
pilot's subpanel placarded FLOOD LIGHTS and PANEL
LIGHTS, and four rheostats located on the right subpanel plac-
arded FLIGHT INST, INST FLOOD, STANDBY INST, AND
SUBPANEL LIGHTING. Once the rheostats are set to the
desired level, cockpit lighting is immediately available merely
by turning on one or both of the switches.
7-50
May, 2015
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