External Power Receptacle - Beechcraft C23 SUNDOWNER 180 Pilot Operating Handbook

Section VII BEECHCRAFT
Sundowner
180
Systems
Description
C23 (M-1285
and
After)
28-VOLT SYSTEM
The
28-volt alternator
is
rated
at
70
amps nominal
output
at cruise
engine rpm. A self-exciting feature provides for
activation of the
alternator
independent
of battery power
when
the
engine reaches a speed
of
1200
to
1500 rpm. A
switch
on the
pilot's subpanel placarded
ALT
FIELD
controls
the alternator circuit. Circuit breakers
for
the
alternator are
located
on the
right subpanel.
CAUTION
,
Do
not
pull alternator
circuit breaker
to
turn
off
electrical system
except
in
an
emergency.
The alternator
output
is
controlled by
a regulator
to keep
the battery
in
a fully charged condition. Monitoring the am-
meter
for
proper operation
of the alternator
is
the same as
for a generator
installation. A
zero
reading, which
is nor-
mal in
cruising flight, indicates that the battery is fully
charged
and
that the
alternator output
has
been
adjusted
by the voltage
regulator
to balance the
load
of the electri-
cal
equipment in use.
Should
an
alternator
or
regulator
become
inoperative,
indicated
by a heavy discharging
or
widely
fluctuating
ammeter
indication,
turn the
ALT
switch to
OFF, and
minimize
the
electrical current consumption, since
only
battery power is available. Have
the
difficulty corrected
before
the
next flight.
Refer
to HANDLING, SERVICING
AND MAINTENANCE
Section
for minor
maintenance
of the
alternator.
EXTERNAL POWER
RECEPTACLE
The
external power
receptacle
is
optional
on
this airplane.
7-26
January,
1982