Raytheon Beech Baron E55 - Page 554

Beechcraft
BARON
55
AND
58
SHOP
MANUAL
CHART
6
TROUBLESHOOTING
THE
PROPELLER
DEICER
SYSTEM
c’Continued)
Indication
Probable
Cause
Remarks
b. Loose
or
poor
connection timer
b. If trouble
occurs
in
part
of
cycle.
find
to
deicer.
which
deicers
are
affected and check
for
rough
or
dirty
slip rings causing
brush
to
"skip".
If
not
this,
trace
circuit
to locate
and
fix
loose
or
poor
connections.
(If
all
deicers
on one
prop
are
affected,
check
the
ground
circuit.)
c.
Timer
cycles
erratically.
c.
Test
timer
as
indicated
in
paragraph
on
timer
check.
d.
Electrical
wiring
breakdown, d.
Replace
the
faulty
deicer boot.
9.
Radio
noise
or
interference
a.
Brushes
"arcing".
a.
Check
brush
alignment
as
in
step
g
with
deicers
on.
of
ELECTRIC
PROPELLER
DEICER
SYSTEM
100-hour
inspection
(Section
16).
Look for
rough
or
dirty slip
rings.
If
this
is
the
cause,
clean,
machine
or
replace
the
slip
ring
assembly.
Check
for
slip
ring alignment.
b.
Loose
connection,
b. Refer
to
step
h
of
100-hour
inspection
(Section
16).
c.
Switch
faulty.
c.
Try
jumper
wire
across
switch.
if
radio noise
disappears, replace
switch.
d.
Wiring
located
within less than
d.
Replace
at
least
8
inches
from
input
8
inches
of radio
equipment
wiring
to
radio
equipment.
wiring.
10.
Cycling
sequence
not
correct.
a.
Crossed
connections.
a.
Check
system
wiring
against
circuit
diagram
for
improper
connections.
11.
Rapid
brush
wear
or
frequent
a.
Brush block
out
of
alignment,
a.
Check
brush
alignment
as
in
step
"i"
breakage.
of
100-hour
inspection
(Section 16).
b.
Check
slip ring
alignment
with
dial
indicator.
c.
Rough
slip
ring
surface.
c.
Replace
or
machine.
d.
Dirty
slip
rings.
d.
Clean
the
slip
rings.
e.
Brushes
arcing.
e.
See
8a.
I
PITOT
AND
STATIC
SYSTEMS
TE-943 and
after
and
TH-1
and
after.
On
optional
dual
(Figures
11141
and
11142)
pitot
instaliations,
the
second
pitot
mast
is
located
in
the
opposite
position
on
the
RH
side ofthe
airplane.
A
The
pitot
and
static
pressure
system
provides
for
a
heating
element is
incorporated
in
the
pitot
mast to
source
of
ram
(impact)
air and
static air for
instrument
prevent
the
mast
from
being
obstructed
by
ice. Static
operation.
Ram air
enters
the
pitot
mast
and
is routed
air
is
taken
from
a
static
air
port
located
on
each
side
to
the
airspeed
indicator.
The
pitot
mast
is
located
on
of the
aft
fuselage.
The
static air
is
routed
along
the
the
underneath
side
of the LH
wing
leading
edge just
left side
of the
fuselage
to
the
rate-of-climb
indicator,
outboard
of the
nacelle
on
Barons,
serials
TC-1
thru
altimeter
and
airspeed
indicator.
Should
the
normal
TC-16G7
and
TE-1
thru
TE-942,
except
TE-938.
The
static
air
system
become
inoperative,
an
emergency
pitot
mast
is
located
on
the
LH side of the
nose sec-
tion
on
Barons,
serials
TC-16G8
and
after,
TE-938,
static
air
source
control,
located
on
the
upholstery
11-74
815