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BEECH CRA FT Sundowner
180
Section IV
C23 (M-1285 and After)
19ormal Procedures
2. The
airplane
has
a
negative
ground system. Connect
the
positive
and negative leads of the external
power
unit
to the
corresponding
positive
and
negative
terminals of the airplane's
external
Dower
receptacle.
3.
In
order to
prevent
arcing,
no
power
shall be supplied
while
the connection
is
being
made.
STARTING ENGINE USING AUXILIARY POWER UNIT
1.
Alternator,
Electrical, and Avionics Equipment
-
OFF
2. Auxiliary Power Unit
-
CONNECT
3. Auxiliary Power Unit
-
SET OUTPUT
(*13.75
to
14.25
volts
for
14-volt
system and 27.75
to
28.25
volts
for
28-volt system)
4. Auxiliary Power Unit
-
ON
5. Engine
-
START
using
normal
procedures
6. Auxiliary Power Unit
-
OFF (after engine
has
been
started)
7. Auxiliary Power Unit
-
DISCONNECT
8. Alternator Switch
-
ON
STARTING
CAUTION
Vernier-type
engine
controls
should
not
be
rotated
clockwise after being advanced
to
the
full forward
position.
1.
Mixture
-
FULL RICH
2. Throttle
-
FAST IDLE
position
3.
Fuel
Boost Pump
-
ON (cold
weather
starts,
use
eight
to ten strokes of
engine
prime,
as
required)
4. Magneto/Start
Switch
-
START
position
(release
to
BOTH position
when
engine
fires)
CAUTION
DO NOT PUMP THROTTLE TO START
*NOTE
-
M-1285
thru M-2178 are
14-volt
systems.
M-
2179 and after are 28-volt systems.
August, 1980
4-7
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