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4. BATTERY INSTALLATION AND
REPLACEMENT
The total battery life without
backlighting is about 750 hours. Each
bar of the battery annunciator
represents 200 hours. A blinking empty
battery annunciator indicates 150 hours
remaining.
Selecte
d
se
ttin
gs
are
stor
ed
in
memory
and
will
remain
in
memory
even
after
power
is
turned
off,
or
while
batteries
are
being
replac
ed.
1. Before
changing
batter
y
, tur
n
instrume
nt off
and
disconnect
thermocoupl
e.
2.
Loosen
screw
and
lift batter
y
cover
off
back
of case.
3.
Remove
the t
hree
AA batteries.
4. Insert three
new
batteri
es
observing
pol
arit
y
.
5.
Install
cover
and
tig
h
ten
screw
.
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