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. At approximately 42% N2, IGN off and at approximately 45% N2 START off (SAV closed).
During manual start, the EEC will not limit ITT, the crew must abort the start in case of starting anomalies. After completion of the manual start sequence, the crew select IGNITION to Normal and may then return the START SELECT switch to AUTO.
Engine Shutdown
The normal engine shutdown sequence is as follows:
. Place thrust lever in IDLE position.
GF1810_090
Rev 2A, Apr 11, 2005 Flight Crew Operating Manual Volume 2
Engine Shutdown (Cont’d)
. Place ENGINE RUN switch to the OFF position, when engine has stabilized at Idle.
The EEC will reset (in preparation for the next engine start) after ENGINE RUN switch has been selected to OFF.
Dry Cranking
Dry cranking of the engine is accomplished as follows:
.
Ensure ENGINE RUN switch is selected to OFF.
.
Ensure IGNITION switch is Normal (the EEC will inhibit IGNITION when CRANK is selected, unless IGNITION has been selected to ON).
.
Select START SELECTOR to L CRANK or R CRANK.
The EEC will open the SAV and activate the starter motor (if N2 below starter re-engagement speed). The EEC will keep the starter motor operating as long as the N2 is below starter disengagement speed (approximately 45% N2), for 3 minutes maximum.
The crew can stop cranking by selecting START SELECTOR to AUTO.
Wet Cranking
Wet cranking is normally performed by maintenance personnel. Wet cranking of the engine is accomplished as follows:
.
Ensure IGNITION switch is Normal (the EEC will inhibit IGNITION when CRANK is selected, unless IGNITION has been selected to ON).
.
Select START SELECTOR to L CRANK or R CRANK.
.
Select ENGINE RUN switch to ON (HPSOV opens allowing fuel to the engine burners).
Volume 2 Flight Crew Operating Manual Rev 3, Apr 25, 2005
POWER PLANT
Wet Cranking (Cont’d)
The EEC will open the SAV and activate the starter motor (if N2 below starter re-engagement speed). The EEC will keep the starter motor operating as long as the N2 is below starter disengagement speed (approximately 45% N2), for 3 minutes maximum.
Starting Anomalies
Automatic Ground Start Abort
Any of the following events will result in an automatic ground start abort:
.
Crew selecting ENGINE RUN switch to OFF.
.
N2 speed not greater than or equal to 15% (120 seconds from ENGINE RUN switch ON).
.
Idle speed not achieved (120 seconds from HPSOV open).
.
Starter cutout not being reached within starter duty timer (180 seconds from SAV open).
.
ITT exceeding the ground start limit (700°C) after light-off and during acceleration to Idle.
Manual Ground Start Abort
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