Battery Servicing; Hydrometer Reading And Battery Charge Percent; Battery Charging; Starting Through External Power Receptacble With Battery Depleted - Piper PA-24 Comanche Service Manual

•
PIPER COMANCHE SERVICE MANUAL
t.92.
&artery.
t.93.
SemcinJ
Battery. The baacry is located etcher in
me cnpne
COIIIpanlMftt amdled to the flftWlll
or in the fusdqe directly
an
of the
batPP
comptmneftt. The
bacury is
endoted in a nainlaI sceel box
with
a
vent system. and
a
drain
when the box
is iDaa1lcd in
die
fuIcIaIe.
The vent
allows frab
air co enter
the box and draw off fumes chat may accumulate due
co
the cbarJinl
pfOCaI
of the barm"Y' The dnin is
a
plastic tube located on the bottom side of
me
box which
is normally doted
off with a c:laatp
and should be
opened occasionally to
drain
off any
accumulation
of
liquid or
dUria,
cleuUns
of the box. The batterY
should be checked for fluid level. but
IIIUIC
DOt be fiI1ed above the baftJc places.
A hydrometer check should
be performed to dctennine the percent of chUle praalc
in
the battery. All connections must be clean and
tiJht. If ehe battery is not up to normal chatF, recha.
SUI'tiIII
with a
charJinI
fIte of four amperes and
finishin,
with
cwo amperes.
•
1280
1250
1220
1190
1160
1130 or
1»10.
CAl1TJON
P.rcent .f
eho".
100
75
50
2S
Very lin!• • • ful capKity
Ot.c:harpd
•
External
power should not be conaecud
CD
or removed
from aircraft
with muter switch
ON.
9-9S.
Otaflinl
Battery. When rechqing the battery, it should
be raftcwed
from the &irplane. (Refer to
PU'llt'lPh 9-97.)
a. Remove cell aps and check fluid level.
b.
Bqin charJin, rate at 2 amperes and fmishm, with 1 ampere.
c. Should the battery boil over. clan
per
parqraph 9-100.
d.
When battery is completely chafJCd,
reinRa11
in the airplane.
9-96. Scartin, Throup External Power Rccepade With Airplaac's
"aery
Nariy Depleted.
a. When using a 1% volt battery for external
power
starriftl and the airplane's battery is nearly
depleted. the followins procedure should be used:
1. Disconnect the airplane's battery
It
the neprive terminal to prevent excessive loading of the
external starting banery.
2.
Check that all of the &irplane's electriC2l equipment is
named
OFF.
ELECTRICAL SYSTEM
ISSUED: 8118172
3
C21