Raytheon Beech Baron E55 - Page 524

’I3eechcraft
BARON
55
AND
58
SHOP MANUAL
The windshield
heater
is of the
heated
segment
a.
Working
in
the
nosebaggage
compartment,
tag
design.
The
windshield
heater is
approximately
9.6
X
and disconnect
the
windshield
heater
wiring
from
the
11.5
inches,
conforming
to
the
contour
of the
wind-
windshield
heater
control
box.
shield and located
on
the
centerline
of the
airplane.
b. Remove the
two
screws
securing
the
wire
cover.
The
windshield
heater is
controlled
by
a
20-ampere
c.
Using
a
sharp-edged
tool
such
as a
putty
knife
or
toggle-type
circuit
breaker
switch,
placarded
WSHLD,
pocket
knife,
insert the
tool
under
the
edge
of
the wire
located
on
the left
subpanel.
With
the switch
on,
28
vdc
of
power
is
applied
to
the
windshield
temperature
cover.
Loosen the bond
of
the
sealant
either
by
cutting
or
by
prying
it
loose. Be careful
not
to
scratch the
air-
controller,
windshield
heater
relay
and
windshield
plane
finish,
bend
the wire
cover
or
damage
the
wir-
heater.
The
temperature
controller
senses
the
tem-
ing.
Refer
to
Figure
11-20.
perature
of
the
windshield
heater.
The
temperature
controller
removes
power
from
the
system
(de-
d´•
Lift
up
the
wire
cover.
Using
a
sharp-edged
tool,
energizing
the
relay)
when the
temperature
of
the
pry
or
cut
the
sealant
out
of
the
inside
of the wire
windshield is between 100"F
and
110"F.
When the
cover.
Be careful
not to
damage
the wires.
windshield
heater
has cooled
to
a
temperature
of 90"
e.
Separate
the
wires
from the wire
cover.
to
100"F,
power
is
applied
to
the
system
(energizing
f~
Pull
the wires
up
and
out
of
the
hole
in the
fuse-
the
relay) allowing
the
temperature
to
rise
again.
Thus
lage.
the
temperature
controller maintains
the
temperature
of
the windshield
heater
between
a
temperature
of
90"
g.
Remove
the
sealant
from
the
hole
in
the
bottom
and
110"F.
retainer where
the wires
pass
through
to
the
heater
plate.
Be careful
not
to
damage
the
wires.
Refer
to
i
u\unohl(
Figure
11-20.
CAUTION
NOTE
Ground
operation
of
the
windshield
If
it
is desired
to retain
the
existing
wind-
heater
is
limited
to
10
minutes,
shield heater
plate
for
continued
use,
make
a
putty
knife-like
scraper
out
of
Plexiglas
or
wood.
Sharpen
one
edge
and
use
this
toolinstead
of
the
putty
CAUTION
knife
used
in
step
i.
This
tool
will
help
prevent
scratching
the
heater
plate.
The
magnetic
compass
is erratic
when
Applying
masking
tape
to
the heater
the
windshield heater
is
in
operation.
If
plate
will
further
protect
the
surface from
the
directional
gyro
is
to
be
reset,
turn
off
scratches.
the
windshield heat
for
15
seconds
to
allow
a
stable
reading
of
the
standby
h.
Using
a
sharp-edged
putty
knife
or
similar
tool,
compass.
scrape
off the
sealant around the
perimeter
of
the
win-
dhield
heater
plate.
Refer
to
Figure
11-20.
j
NOTE
i.
It
may
be
necessary
to
insert
a
sharp-edged
tool
between
the
heater
plate
and
the retainers
in
order
to
Heat should be
applied
to
the
windshield
before
ice
forms.
completely
loosen
the
bond
of
the sealant.
If
this
is
done,
be careful
not
to
pry
on
the side
or
bottom
WINDSHIELD
HEATER
REMOVAL
retainers,
as
they
are
likely
to
break.
It is
permissible
to
break
the
top
retainer,
as
it should
be
replaced.
(TE-1169
AND
AFTER,
TH-
1080
AND
Refer
to
Figure
11-20.
AFTER)
j.
Start
working
at
the
top
left
corner
of
the
wind-
Using
masking
tape,
mask off
an
area
on
the wind-
shield
heater
assembly;
use a
sharp
putty
knife
to
shield
approximately
14-inches
long
by
12-inches
remove
the
top
windshield
heater
plate
retainer.
Insert
wide above
the heater
frame.
On each side
of the
the
edge
of the
putty
knife
between
the
windshield and
heater
frame,
apply
masking
tape
along
each
edge
the
top
retainer. Insertion
depth
should
not exceed
1/8
the
entire
height
of
the frame and
at
least
6
inches
out
inch.
Refer
to
Figure
11-21.
Working
along
the
entire
from the
edge.
This
will
help
to
prevent
scratching
the
length
of
the
top
retainer,
pry
off
the retainer
and dis-
windshield
when
removing
the windshield heater.
card it.
Take
care
not
to
scratch the windshield.
11-44 E15