Raytheon Beech Baron E55 - Page 450

RayNheon
aircraft
Company
BARON
55
AND
58
SHOP
MANUAL
I
On
TC-2389
and
After;
TE-1191
and
After;
TH-1253
and
After,
a
heater
hour
meter
is
mounted
in
the
nose
baggage
compartment
door
frame. Whenever
the
heater
is
in
operation
the hour
meter
is
powered
on
to
accurately
monitor
service
hours
on
the heater
so as
to
schedule
proper
maintenance
(refer
to
Figure
4).
RIGGING
THE
HEATER
CONTROLS
The
cabin
air control
on
the
far
left side
of the
subpanel
controls
the
iris
Valve
and
the
heater
safety
switch.
Place
I
the iris
valve
actuator
as
far
to the
right
(facing
forwardj
as
possible.
With
the
CABIN
AIR
control
pushed
in,
attach
the
control
wire
to
the iris
valve
actuator
arm.
The
safety
switch
is
positioned
on
the
underside
of
the
heater
shelf
in
I
adjustable
slots.
Pull
the
CABIN AIR
control
to
the
half-open
position
and
set
the
safety
switch
arm
so
that
the
switch
will
be
open
at
this
point.
When
disconnecting
the
iris
valve
control for
adjustment
purposes,
position
the
control
in
either
the
full-open
or
full-
closed
position,
so
that
it
may
be
reinstalled
without
disturbing
the
adjustment
of
the
safety
switch.
I
The
heater
ductstat
control located
at
the
far
right
of
the left
hand
subpanel
controls the
heater
thermostat.
With
the
CABIN
HEAT
control
pushed
in
and the
lug
on
the
ductstat
pushed
to
the far
right,
push
the
control
wire
through
the
lug
and
tighten
the
screw.
Make
sure
the
guide
lug
on
the
ductstat
switch
is
in
the
straight
downward
position
before
I
securing
the control wire.
The
pilot’s
and
copilot’s
air
vent
doors
above
the
rudder
pedals
are
controlled
by
push-pull
knobs
located at
the
extreme
left
just
below
the
subpanel.
The
doors
are
adjusted
at the
attachment
of
the
cable
and
vent
door
on
the
firewall.
OVERHEAT THERMOSTAT
The
overheat
thermostat
is
set
at
the
factory
to
operate
between
260
and
325"F
and
can
not
be
adjusted,
but
must
be
replaced
if
it
malfunctions.
HEA
TER
SPARK PLUG GAP
The
spark
gap
is
0.156
to
0.188
in.
The
gap
may
be
adjusted
by
moving
the
ground
electrode
to
obtain
the
proper
gap.
HEATER
IGNITION UNIT
I
The electric
current
for
the
ignition
is
supplied
by
the
ignition
unit,
which
converts
24
vde
to
high
voltage
oscillating
current.
This
provides
a
continuous
spark
across
the
gap
ofthe
spark
plug
during
heater
operation.
Inspect
and
repair
in
accordance
with
Maintenance
Instructions
for
Ignition
Unit
Assembly
Manual,
P/N
93000-1,
Janitrol
Aero
Division,
Midland-Ross
Corporation.
HEATER OVERHAUL
At the
end
of
eacl~l
500
heater
operating
hours,
or
after
each
heating
season
(whichever
comes
first),
remove
the
heater from the
airplane
for
pressure
test
of
the
combustion
tube,
complete inspection
of
heater
parts
and
any
necessary
overhaul
operations.
Inspect
and
overhaul in
accordance with
Maintenance
Instructions
for
Aircraft
Heater
Unit
Assembly,
P/N
92D88-1,Janitrol
Aero
Division,
Midland-Ross
Corporation.
Jun
27/03Pagel2
SECTION
10
EZO