Raytheon Beech Baron E55 - Electrical System

Raytheon
Aircraft
Company
BARON
55
AND
58
SHOP
MANUAL
ELECTRICAL
SYSTEM
LEAD-ACID
BA
TTERIES
Either
a
standard
single
24
volt
lead-acid
battery
or
two
optional
12 volt
lead-acid batteries
may
be installed
in
the
Baron,
supplying
a
total
system
capacity
of
24
volts.
The batteries
are
located under
the floor in
the
nose
baggage
compartment.
The
batteries
should
be
maintained
in
a
fully
charged
state
at
all times and
the
electrolyte
level
checked at
regular
intervals.
A
clean
fully
charged battery
will
provide peak
performance.
Never
add
anything
but
distilled water
when
adjusting
the
electrolyte
level
in the
battery,
if
electrolyte
is added
each
time the
level
is
low,
a
high
concentration
of
electrolyte
may
cause
dissolution
of the
plates.
Under
high
temperature
conditions
this
may
indicated
by
the
presence
of
black
particles
in
the
electrolyte
of the affected
cells.
Refer
to
Chart
27
I
TROUBLESHOOTING
LEAD-ACID
BATTERIES.
NOTE:
Do
not
fill the
battery
over
one-half
inch above
the
separators. Only
lead-acid
equipment
should
be
used
when
servicing
lead-acid
type
batteries.
BATTERY
CLEANING
For
peak
performance,
the
battery
must
be
kept
clean
and
dry.
If
foreign
materials
are
present
in
sufficient
quantities
the resultant
deposits
may
form
conductive
paths
that
permit
a
rapid
discharge
of
the
battery.
To
prevent
the
collection of
such
deposits
the
battery
should
be
cleaned
after
each
100
hours
of
service
or
every
30
days,
whichever
occurs
first.
NICKEL-CADMIUM
BA
TTERIES
To
obtain
optimum
service from
the
two
12
volt
25
ampere-hour
nickel-cadmium
batteries installed
in
some
Barons,
proper
and
regular
maintenance
of
the
battery
MUST be
performed.
Refer
to
Chart
28
TROUBLESHOOTING
I
NICKEL-CADMIUM
BATTERIES.
CA
UTION:
Methods
of
servicing
lead-acid
batteries
do
not
apply
for
the
sen/icing
of nickel-cadmium batteries.
A
Systematic
Battery
Maintenance
Program
should
be established and
carefully
followed:
a.
The
battery
should
be
removed
from the
airplane
for
service.
b.
A
log
of
the
services
performed
an
each
battery
should be
maintained.
c.
The
battery
should
be
removed from
the
airplane
and serviced aftec
100
Flight
Hours
or
30
days,
whichever
occurs
first.
If the
ambient
temperatures
are
above
900F
or
the
time between
engine
starts
average
less
than
30
minutes,
the
duty
cycle
should
be reduced.
d.
The
log
of
battery
services
performed
should
be
evaluated
to
determine
the
need
to
service
the
battery
at
the
above
recommended
intervals
or
to
extend the
intervals
if
justified.
Accurate water
consumption
data
is
a
valid
barometer
to
use
for
adjustment
of the
servicing
intervals.
Since the
proper
battery
servicing
requires
two
days,
an
additional
battery (or
batteries)
will
be
required
where
aircraft
utilization
warrants.
For additional information
on
battery
maintenance,
refer
to
the
Marathon
Battery
Instruction
Manual
(P/N
BA-89).
Advisory
Circular
AC
00-33
printed
by Department
of
Transportation,
Federal
Aviation
Administration,
is
another
good
source
of
battery
maintenance
information.
EZ1
SECTION
13
1