Table of Contents
Advertisement
b
Maintenance In
service
Cli male
Specil1c
9,a-II'I
atliliing
Temperate
(usua lly
under
32'
C
(90'
F)
1260
Tropical
(usually
over
32"
C
(90"
F)
1230
1
Ensure t
he elec
tro lyte
level
tops
always the
pl
ate
separators.
Do
thi
s
adding
only distilled
w
ater.
Neve
r
add SLJl phLJrt
C
ac
id
.
2
ShOLJl
d too
fr eque nt
w
ate
r
addit ions
be re
q
uired
,
II
is best to
have
th
e
e
lectric c ircui
ts
chec
ke
d as
the
battery
works
under
heavy ioad
and
will qLJ iCk
ly
w
ea
r
o
ut.
3
The slectnc
system
sho uld
also
be
c
hecked
when
lhe baltery
shows
a
tendency
10
d
ischarg
e_
4
If
a ba llery
(new 0
1'
used)
is
left inoperative [or
a
certall'
period
of
time,
it sho uld
be
re-charged
every
mon
th
.
S
A lways
keep
the
terminal
s well c
lean
. keeping
th em
g
reased
wi
th
pure
vaseline
jelly.
6
Alw
ays koep
th
e
top
ba
ttery cover
thoroughly
clean
, avo id ing
overfl
ows
of acid
which
reduce
in
·
sulatl
o
n
and
corrode the
battery housing.
NB
If
the
battery
is to operate in
tropical
climates
(average temperature higher then
33'
C (91
'
F)
II Is
recommended
\0 reduce
the
acid gravity to
1.230.
c
Measuring
spec
ific
gravity
and temperature
of
electrolyte
(fi
g.
164)
Thi
s
opera tion
should
be
done pe riodically
on
each
cell
aft
er
c
heck
ing
Ih
e
aC id
leve
l.
To
make t
hi
S
cont
rOl
,
use
.;I.
SUitable hydrom
eter as
show
n
in
fig.
164.
The
tempe
rature is
meas
ured
using a round
end
th
er'
mometer c
ompl
et
ely
imm erg ed
in
the
electrolyte
of
the
ce
ll
concerned.
d
Correction of the
spec
ific
gravity
reading
in respect
of
tempertlture
A
ll
read
ings
should be
brought
d
own
to
the stand
ard
temperatu
re o
f
25'
C (77
Fl,
For
each
10'
C
(SO'
Fl di
fference
it is nec
essary
10
add or
detract 7
g
I
l
to
b
ring the re
ading
down
to
the
said
v
alu
e
of
25"
C
.
•
For
example,
a
read ing of
I
S'
C
(59' F))
=
1.290
sp. g;
•
the
correspo
ndin
g g
ravity
bro
ught to
25'
C will
be
1290-7
=
1283
g/
1.
A
reading
at
35'
C
(95'
F)
=
1275 gil.
98
Spec
ific
yra"ty
Mu
lem~era\u
".1
al
o:md
01
c
harg
e
parmlsslbll~
dU' ;1l9
charUG
1270
-i-
1280
50"
C
(122'
F)
1
220
~
-
1230
6O"
C
(140'
F)
T
he
c
orresponding
grav
ity
at
a
te
mp eratu
re
of
25'
C
(77'
F)
Will be 1275
+
7
=
1282 sp
.g
.
T
his
corre
ction
fac to
r
sh
ould always be
w
ithin
1270
+
1280.
When
measuring
spec ifiC grav ity. the fol
low
in
g
pre-
ca utions
shoul
d
be la ke
n:
-
lake the reading
at eye
level
ho
lding the lube
ver-
l
ically.
and
ensur
ing the floa
t
is
free
(See
fig
.
148);
-
afte
r
measureme
nt
pu
t
back
the
l:Icid in
the
cell
fro
m
w
here it
w as
laken.
-
if
a
ny
d
rop o
f
ac
id
has
d
r
ipped.
d
ry
them
wilh a
wollen
c
lo
th
;
-
lhe
fo
llowi
ng
t ab
le ind ical
es
the
sp
eCific
gravity
rating
s
in
respect
to
c
li
mate.
'
..
,
0
INCORRECT
-
~
CORRECt
"
'READ ING
REAOING
?
~
__
.
_A
I
~
..
~
-
f
§
.~
_
--
t>
o
" "
L-____________________________
~'64
Advertisement
Table of Contents
