SECTION 4 CESSNA
NORMAL PROCEDURES
MODEL
2088
(675
SHP)
STARTING ENGINE
(Continued)
CAUTION
IN THE EVENT THE AUXILIARY POWER UNlT
DROPS OFF THE
LINE DURING ENGINE START, A
LOSS OF ELECTRICAL POWER TO THE STARTER
WILL RESULT WHICH COULD CAUSE A HOT START.
SHOULD A LOSS OF AUXILIARY POWER OCCUR,
IMMEDIATELY PLACE THE FUEL CONDITION LEVER
TO CUTOFF, MONITOR ITT, AND ENSURE 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 AUXILIARY POWER UNlT IS USED,
ENSURE THE UNlT IS NEGATIVELY GROUNDED
AND REGULATED TO 28 VOLTS DC
WlTH A
CAPABILITY OF PROVIDING A MINIMUM OF
800
AMPERES DURING THE STARTING CYCLE.
AUXILIARY POWER UNITS
WlTH OUTPUT
Before engine starting with the airplane battery, check the voltmeter for
a minimum of 24 volts. With turbine engines, the operator must monitor
ITT during each engine start to guard against a "hot" start. The operator
must be ready to immediately stop the start if
ITT exceeds 1090°C or is
rapidlv ap~roaching this limit. Usuallv, "hot" starts are not a problem if
tne
normal starting-procedures are fbllowed. A "hot" start is caused by
excessive fuel flow at normal revolutions per minute or normal fuel flow
w.tn insufficient revolutions per minute. The latter is usually the problem
whicn is caused bv attempting a start with a
paniallv discharaed or
.
-
-
weak battery.
Revision 23
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