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CESSNA
SECTION 2
MODEL 162
AIRPLANE AND SYSTEM DESCRIPTION
GARMIN G300
ELECTRICAL SYSTEM
(Continued)
MASTER SWITCH
The MASTER switch is a rocker type switch with two sides. The BAT
side of the switch controls the electrical power to the airplane from both
the main battery and secondary battery. The ALT side of the switch
controls the alternator system.
In normal operation, both sides of the switch (ALT and BAT) are
operated simultaneously. However, the BAT side of the switch may be
selected separately as necessary. The ALT side of the switch cannot be
set to ON without the BAT side of the switch also being set to ON.
ELECTRICAL SYSTEM MONITORING
Main battery current, and system voltage indications are available on
the PFD during single display operation and on the MFD when a
second display is available.
MAIN BATTERY CURRENT (AMPS)
The main battery current indication is shown on all G300 EIS pages. A
positive number indicates a charging battery while a negative number
indicates a discharging battery. The tape display range is -35 to 35
amps with digital information range from -50 to 50 amps. A red-X is
displayed when the instrument is invalid or out of the data range. A
white pointer indicates actual current value.
SYSTEM VOLTAGE (VOLTS)
Electrical system voltage is shown on the G300 ENGINE page. The
tape display is 8 to 18 volts with digital information range from -30 to 30
volts. The tape has a red band from 8 volts to less then 12.5 volts (low
warning), a green band from 12.5 to 15.0 volts (normal operating
range), a yellow band from 15.0 to 16.0 volts (high caution) and another
red band from greater than 16.0 volts to 18.0 volts (high warning). A
red-X is displayed when the instrument is invalid or out of the data
range. A white pointer indicates actual system voltage.
When the system voltage is less than 12.5 volts, a red LOW VOLTS
CAS message is displayed on the bottom left side of G300 PFD attitude
indicator.
162PHUS-01
2-21
U.S.
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