Raytheon Beech Baron E55 - Page 608

Raytheon
Aircraft
Company
BARON
55
AND
58
SHOP MANUAL
d.
Continue
charging
for
20
hours.
After
20
hours
of
charging,
measure
and
record
the
individual cell
voltages.
If
I
necessary,
add
distilled
water
to
level
the
cell
1/8
to
1/4
in.
above
the
baffle.
Do
not
remove
any
electrolyte
from
the
cells.
e.
Measure
and
record
the
voltage
at
24
charge
hours
and
compare
with the
20
hour
reading.
If
the
24
hour
voltage
reading
is below
the
20
hour
reading
by
more
than
0.04
volts,
replace
the cell. Also
replace
any
cell
that
measured
below
1.50
volts
at 24
charge
hours.
After
removing
the
battery
from
charge,
measure
the
electrolyte
temperatures.
If
the
electrolyte
temperature
of
any
cell
is
greater
than 30"F above the
ambient,
replace
that
cell.
BATTERY
ELECTROL
ME
LEVEL
ADJUSTMENT
Although
the
electrolyte
level
in
the nickel-cadmium
battery
varies with
the
state
of
charge,
it
should
be
visible
above
the
bottom
ofthe
baffle
when
the
battery
is
fully
charged.
When the
state
of
charge
of
the
battery
is
low,
the
plates
absorb
some
of the
electrolyte,
then release it
as
the
battery
is
recharged.
The
electrolyte
level
on
any
battery
must
be
adjusted
after
a
full
charge
and
a
two
to
four
hour
rest
on
open
circuit. Check
the
electrolyte
level
of the
battery
(fully
charged)
in the
following
manner:
CAUTION:
Never
use
acid
or
tools
contaminated with acid
during
this
adjustment,
for
both
bodily
injury
and
equipment
damage
may
result. If
possible,
use
equipment
reserved
for
nickel-cadmium batteries.
If
lead-acid
battery
equipment
must
be
used,
remove
all
possible
acid contamination
with
a
sodium
bicarbonate
solution
and
rinse.
Even
minute
traces
of
acid
can
damage
a
nickel-cadmium
battery.
a.
Remove
the
battery
from
the
airplane.
b.
With
the
battery
removed
from
the
airplane,
remove
the filler
cap
vent
plug
on
each
cell
one
cell
at
a
time.
I
WARNING:
The
battery
may
be
damaged
if
the
proper
procedure
is
not
followed when
adding
water
to
thecells
CA
UTION:
Do
not
push
down,
for
the
light
material of
the
baffle
will
give enough
to result
in
a
false
indication
of
the
electrolyte
level.
I
c.
Insert a
transparent
tube
(approximately
6
in.
long
and
1/4
in.
diameter)
perpendicularly
into
the
filler
well
until
the
open
end
rests
lightly
on
the
cell
baffle,
then
place
the index
finger
over
the
top
open
endand
withdraw
the
tube.
CAUTION:
Tap
water
contains
minerals, chlorines,
softening
agents,
and
other
foreign
materials
which
will
contaminate
a
storage
battery
and shorten
its
life.
If
water
or
electrolyte
is
spilled
into
the
battery
container,
the
resultant
electrolyte
corrosion
may
cause
battery
failure.
The
battery
case
must
be
cleaned
as
instructed
in
BA~ERY
CLEANING.
I
d. The
electrolyte
level
of
a
fully charged battery
should be
between
1/8
and
1/4 in.
above
the
bottom
of
the
baffle.
If
the level
of
liquid
in
the
tube exceeds 1/4
in.,
remove
the
excess
with
a
syringe
or
squeeze
bottle.
If
the
level
of the
electrolyte
is
less
than
1/8
in.
above the bottom of the
baffle,
add
DISTILLED
WATER
with
a
syringe
or
squeeze
bottle.
e.
Clean and
reinstall,
the
filler
cap,
vent
cap,
vent
plugs
and check the
battery
terminal
links
for
tightness.
Discolored
links
or
melted
nylon
around cell
terminals
indicate
loose link
connections.
Dec
31/03PagelO
SECTION
13