the opposite tank, expect an equal duration
from
the
remaining
fuel. The
airspace in
both fuel
tanks
is
inter-
connected by a
vent
line
(see
figure
2-2) and,
therefore,
some sloshing
of
fuel between
tanks
can be expected
when the tanks
are
nearly
full and the wings
are
not
level.
For
fuel
system servicing
information,
refer
to
Lubrication
and
Ser-
vicing
Procedures
in Section
V.
ELECTRICAL SYSTEM.
Electrical
energy
is
supplied
by
a 14-volt,
direct-current system
powered
by
an engine-driven alternator
(see
figure
2-3).
The
12-volt
battery-is
located
aft
of
the
rear
baggage compartment wall.
Power
is
supplied to
all electrical circuits
through a
split
bus
bar,
one
side con-
taining
electronic system circuits
and the other side having
general elec-
trical system circuits.
Both
sides
of
the bus
are
on at
all times
except
when
either
an
external
power
source is
connected
or
the
starter
switch
is turned
on;
then
a
power
contactor is automatically activated
to open
the
circuit
to the
electronics
bus.
Isolating the
electronic circuits
in
this
manner
prevents
harmful
transient
voltages
from
damaging the
transistors
in the
electronics
equipment.
MASTER SWITCH.
The
master
switch
is
a
split-rocker
type switch labeled "MASTER,"
and
is
"ON" in the up position and
"OFF"
in the
down
position. The
right
half
of
the switch, labeled
"BAT," controls all electrical
power
to the
airplane.
The left half, labeled
"ALT," controls
the
alternator.
Normally, both
sides
of
the
master
switch should be used
simulta-
neously; however, the "BAT" side
of
the switch could be
turned
"ON"
separately to
check equipment while
on
the ground. The "ALT" side
of
the switch, when
placed
in the "OFF" position,
removes
the
alternator
from
the
electrical system.
With
this
switch in the "OFF" position, the
entire electrical
load
is
placed
on
the
battery.
Continued operation with
the
alternator
switch
"OFF"
will
reduce battery
power
low
enough to open
the
battery
contactor, remove power
from
the
alternator
field, and
pre-
vent
alternator
restart.
AMMETER.
The
ammeter
indicates the flow
of
current,
in
amperes, from
the
al-
2-3
Summary of Contents for 182 1973
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