Raytheon Beech Baron E55 - Surface Deicer Systems

BEECHCRAFT
BARON
55
AND 58
SHOP
MANUAL
b.
Adjust
the
appropriate
vacuum
regulator
behind
airplane.
The
frequency
of
cleaning
or
replacing
the
air
filters
the
instrument
panel
to
obtain
a
gage
reading
of -L.S
to
-L.9
will
depend
upon
sen´•ice
conditions:
however,
they
should
inches-~f
mercury.
Shut down
engine.
be
checked
appro.uimateiy
everv
100
hours
of
operation.
c.~
Repeat
steps
"a"
and "b"
with
the
opposite
When
operating
in localities
where there
is
an
c~cessivl
engine
running.
amount
of
sand
or
dust
in
the
air,
or
when
subjected
to
d.
After
both
vacuum
regulators
have
been
continuous
cabin
smoke
(tobncco,
etc.)
the
filter
jhould
be
individually
adjusted,
start
both engines
and
set
throttles
to
inspected,
and
if
necessary.
replaced
at
more
frequent
obtain 13,00
RP~I.
The
gage
reading
should
then be
between
intervals.
Under
extremely dusty
conditions.
it
may
be
j.0
and
j.l inches
of
mercury.
necessary
to
inspect
the filter
daily.
X
clogged
tilter
reduces
air
flow
and
slows
up
the
rotor,
cnusing
a
loss
of
g~roscopic
inertia
and
improper
gvro
indication.
NOTE
To
replace
the
filter
assembly
on
the
instrumrnt.
remove
the
On
airplane
serials
TC-95j
thru
TC-200$,
and
air
filter
body-cover
by
taking
out
the
four
fiiliste:-her~cl
TE-I
thru
TE-JS1,
a
vacuum
source
indicator
machine
screws.
Lift
our
the
snap
ring
which holds
the
filter
located
in
the
vacuum
gage,
will indicate
failure
in
place.
remove
the
filter,
and
replace
it
with
3
new
one.
of either
vacuum
pump.
Replace
the
air
filter body-cover
and
gasket.
securino them
with
screws.
If
the
air
filter
body-c.ovet
is
nor
used,
the
filter
mav
be
removed
by
liftin~
the
snap
past
the
four
protec:lve
lug;.
CENTRAL
GYRO
AIR
FILTER
~C-1014
thru
TC-2002;
TE-208
thru
TE-451)
SURFACE
DEICEFI
SYSTEMS
LIGHTWEIGHT
AUTOMATIC
(PUMP-ORIVE,V;
A
central air
filter
installed
for
dual
instruments)
is
SURFACE
DEICER SYSTEILI
incorporated
in
the instrument
lines
to
protect
the instruments
from
dust and
other
foreign
particles.Tnis
filter(s)
is
a
sealed
The
following
description
applies
to
deicer
systems
unit mounted
on
a
bracket
behind
the instrument
panel
and
Goodrich
control valves.
but
is
applicable
also
!o
´•i)´•sten?s
should
be
replaced
every
j00
hours
(or
less
during
operation
incorporating
Tavco
control
valve
assemblies, with
rh=
in
dusty
or
heavy
smoke
conditions).
Replacement
may
be
exception
of control valve
operation
and
air
fiiterinS
made
as
follows:
provisions,
which
will
be
discussed
separately
a.
Locate
the
filter(s).
mounted
centrally
behind
the
The
principle
components
of
the
deiclr
system
are:
control
panel
at
the base
of
the
panel.
Lightweight
rubber and
fabric
pneumatic
dsicer
boorj
b. Remove
the
wing
nut
Pt
the base
of
the
housing
and cement-bonded
to
the
wing
and
emprnnagz
leading edges:
remove
the
filter
from
the
bracket.
the
two
engine-driven
vacuum
pumps
which
provide
air
c.
Disconnect
the
hoses
at
the
top
of the
filter
by
pressure
for
deicer
boot
inflation and
vacuum
for
deicer
removing
the
attach
clips,
boot
deflation;
an
electric
timer
forward
of
the
instrument
d.
Discard
the old
filter
and
install
a
new
filter
by
panel
which
actuates
a
solenoid
operated
combination
reversing
the
above
noted
procedure.
overboard-pressure
relief control valve in
each
nacelle,
pressure
sensitive
shuttle valves
to
control
the
tlow
of
air
to
and
from
the
boots;
a
three
position
switch
to
control
CLEANING
THE
SUCTION
RELIEF
VALVE
SCREEN
the
operation
of the
timer
land
hence
the
deicer
system):
and
~C1
thru
TC-2002;
TE-1
thru
TE451)
the
necessruy
plumbing
~nd
wirina
components
(sss
Fi´•ures
ll-J,
11-5 and the
wiring
diagram
in Section
i-1).
How
often
the
screens are
cleaned
depends
on
the conditions
under
which
the
airplane
is
flown.
Should
the valves need Normally,
the
engine-driven
vacuum
pumps
apply
vacuum
adjusting,
especially
to
lower
the
vacuum,
the
screen
should
to
the
deicer
boors
at
all
times,
except
when
the
boots
are
be
cleaned and
the
setting
rechecked
before
rendjustin_g.
The
being
innated.
When
the
deicer
system
control
switch
is
screen
should
be
washed in
Stoddard
solvent. or a
similar
placed
in either the
~LIANUXL
or
AUTO~IAIIC
position.
cleaner,
then
blown
dry
with
high
pressure
air,
the
timer
energizes
the
combination
overboard-pressure
relief valves.
the
energized
control valves
port
pressurized
air
to
the
pressure
sensitive shuttle
valves
which,
in
rum.
jhur
oft
REPLACING
GYRO
INSTRUMENT
AIR
FILTERS
the
vacuum
normally
applied
to
the
boots
and
allow
(7C-I
thru
TC-2002;
TE-1
thru
TE-451~
pressurized
air
to
inflate
the
boors.
X
iieice:
system
pressure
of 15
to
18
psig
is
maintained
by
the
pressure
relief
function
The
replacement
of
the
air
filter in
the
~vro
instruments
mav
of the
control
valves. When
the
control
valves
are
be
accomplished
without
removing
the
instrument
from
thk
de-energized
by
the
rimer,
the
shuttle
valves
port
the boor
11-4
E10