Piper Comanche PA-24 Service Manual page 721

PIPER COMANCHE SERVICE MANUAL
9-9J.
5a'ricinJ
III.....,.. The burery is located either
ill the .".;ne compartment a""ched to the
flreWtll
or in the
~
cIirectIy aft of <he
boa.
COmplftllleDL
Tbe baa:ery is endosed ill a sta.iN . . rred box
widl a vent
syso:em.
and
a drun when <be box
is
iIIIaJIed ill die
fuaiItIe.
The vent allows
fresh
lino
enter
the box and draw off fumes that may acaunalate due
to
the cbarJinl proem of the batm'y. Tbe drun
is
a
plutic tube located on <he bonom side of the box which
is
normally dooed off widl a clamp and should be
opened occasionally to drun off any &CCWllaiatian of uquid or dllriDJ
d....m.
of die box. The battery
should be checked for fluid level. but
"'us<
not be fdled above the
baff).,
pl&=
A
hydrometer check should
be performed to detcrmiJle the percent of ch"le present ill th. banery. All cOMectiOns m .... be clean
and
tight. If the battery is not up
to
normal clwJe. recha,.e stuti .. with a
cIwJinI
rate
of four
amperes
and
flnishin, with
twO
amperes.
!l-94. Hydro ... ter RNdin, And lottery Charg. P .... nt.
Hydr_ ..... R ••
dlngs P.rcent .f Charg.
1280 100
1250
75
1220 50
1190
2S
1160
Very
linle ... eful capacity
1130
Ot belo .. Discharged
CAtrrlON
External power should not be connected
to
or removed from &ircnft
with master switch ON.
9-9'. Charpng IIIttery. When recb"ling <he battery. it should be removed from <he airplane. (Ref.,.
[0
pangraph 9-97.)
.. Remove cell caps and check fluid level
b. Begin charsinl
tate ..
2 amperes and flllishiDg with I unp .....
c. Should die battery boil
0Vtt.
clean per paracraph 9-100.
d. When battery is
completely cha,.ecl, reinsu.Il in <he airplane.
9-96. S _ , Throup Elmmli Power Recepade Widl Airplane's Battery Ne.Iy Depleted.
.. When using a 12 volt battery for external power sarting and the airpl.ne·, battery is ncatlv
depleted. the following procedure should be uoed,
1. Disconnect the airplane's battery at the negatiye terminal to prevent excessive loading of the
external starring battery.
2. Check tha, all of the airplane's electrieal equipment
is
tumed OFF.
3
C21
EI.ECTRICAL SYSTEM
ISSUED: 8/18172