Raytheon Beech Baron E55 - Page 675

Raytheon
nircraft
Company
BARON
55
AND
58
SHOP
MANUAL
Chart
28
TROUBLESHOOTING
NICKEL-CADMIUM
BATTERIES
(Continued)
INDICATION
PROBABLE CAUSE
REMARKS
3.
(Cont.)
c.
Vent
caps
loose
or
broken,
c.
Clean
cell,
replace ortighten
vent
cap.
d.
Cracked
cell
case.
d.
Replace
cell,
clean
battery.
4.
Cell
cases
distorted,
a.
Excessive
charge
rate.
a.
Clean the
battery,
recondition,
adjust
the
electrolyte
level and
capacity
test.
Adjust voltage
regulator
of
airplane.
b.
Cell with
internal
short.
b.
Replace
defective
cell,
recondition
and
capacity
test.
c.
Plugged
vent
caps,
minor
c.
Disassemble,
replace
defective
explosion.
parts,
clean the
battery,
recondition
and
capacity
test.
5.
Unequal voltages
among
cells,
a.
Cells
unbalanced.
a.
Equalize
cell
voltages (perform
a
full
capacity discharge
cycle)
capacity
test.
6.
Foreign
matter
within
cells.
a.
Impure
or
acid-contaminated
a.
Such
cells
will
not
normally
water,
respond
to
charging. They
will
show
up
as
unbalanced
cells
and
must
be
replaced.
7.
Frequent
addition
of
water.
a.
Unbalanced
cells.
a.
Equalize
cell
voltages.
b.
Leaky
or
defective
cells,
damage
b.
Replace
defective
parts
and
to
O-ring
or
vent
cap.
inspect
for
electrolyte leakage.
Clean,
recondition
and level
electrolyte.
8.
Burn
markson
connectors.
a.
Loose
connectors.
9.
Overheatingof
intercell
a.
Loose
or
dirty
intercell
connectors,
a.
Disassemble, clean,
reassemble
connectors.
and
properly
torque
intercell
connectors,
capacity
test.
10.
Foam
or
bubbling
during
a.
Oil
or
grease
contamination in
the
a.
Replace
defective
cells.
charging,
electrolyte.
b.
Low
concentration
of
electrolyte.
b.
Recondition,
replace
cells that
continue
to
foam.
11.
Below normal
output.
a.
Battery
switch left ON.
Recharge
and
capacity-test.
b.
Voltage
regulator
set to
low.
b.
Recharge
and
capacity-test.Reset
voltage
regulator.
c.
Internal connection links loose.
c.
Torque,
recharge
and
capacity-
test.
d. External
connector
burned
or
d.
Clean
or
replace,
recharge
and
pitted.
capacity-test.
Dec
31/03Page
78
SECTION
13
EZ1