Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 267

CESSNA
MODEL 208B 867 SHP
GARMIN G1000
STARTING ENGINE
If the amber STARTER ON annunciator fails to go out after
the STARTER switch has been moved to the OFF position,
the start contactor can be closed and the generator will not
function. Perform an engine shutdown.
Engine starts can be made with airplane battery power or with an
External Power Unit (EPU). However, it is recommended that an EPU
be used when the ambient air temperature is less than -18°C (0°F).
Refer to Cold Weather Operation in this section when ambient
temperature is below -18°C (0°F).
•
In the event the external power unit drops off-line
during engine start, a loss of electrical power to the
starter will result which could cause a hot start.
Should a loss of external power occur, immediately
place the FUEL CONDITION lever to CUTOFF,
monitor ITT, and make sure the engine is shutting
down. Turn the EXTERNAL POWER switch OFF
and place the STARTER switch to the MOTOR
position to aid in reducing ITT if necessary.
•
When an external power unit is used, make sure the
unit is negatively grounded and regulated to 28 volts
DC with a capability of providing a minimum of 800
amperes during the starting cycle. External power
units with output exceeding 1700 amperes shall not
be used.
Before engine starting with the airplane battery, check the BUS VOLTS
for a minimum of 24 volts. Monitor ITT during each engine start to
guard against a hot start. The operator must be ready to immediately
abort the start if ITT exceeds 1090°C or is rapidly approaching this limit.
Usually, hot starts are not a problem if the normal starting procedures
are followed.
FAA APPROVED
208BPHCUS-00
(Continued)
NOTE
CAUTION
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SECTION 4
NORMAL PROCEDURES
U.S. 4-49