Cessna 402B 1973 - Page 84

WARNING
When uneven
deici.ng
of the
propeller
blades is in-
dicated,
it is
imperative
that
the
deice
system
be
turned
OFF.
Uneven
deicing
of
the blades
can
re-
sult in
propeller
unbalance
and engine
failure.
ELECTRIC
WINDSHIETD
The electric
windshield anti-ice system
consi.sts of an electrically
heated element
in the
windshield,
a function
indicator
light, a heat sen-
sor,
and
a switch
breaker.
The
heat sensor cyeles
the
power
to the
windshield,
providing
temp-
erature
conhol.
The-
green
function
indicator light will illuminate
during each cycle.
NOR'I1AT
OPERATION
To operate
the electric vrindshield anti-ice system
proceed
as follows:
(1)
Battery Switch -
ON.
(2)
Switch
Breaker
- ON.
(3)
Indicator
Ught -
Check.
EIIlE R. G E N CY OPER
AT ION
Ab,normal
operation of
the
windshield
anti.ice
system is indicated by
the
switch
breaker tripping
to the off
position
or failure
of
the
indicator
Iight to
illuminate.
Failure
of
the
switch
brealer
to
stay
reset indicates
that
windshietrd anti-ici.ng
is
impossible. If the
indicator
does
not
illumi-
nate
periodically,
check the bulb by
pressing
the
"PRESS
TO TESTT'but-
ton. A
secondary
means
of
checking
proper
windshield
operation
can
be
made by monitoring the
ammeter.
An increase in the ampere
reading
will
be
noted during
each
heating cycle.
,-t