A. Automatic Start
 The ENG panel (115VU) initial configuration is :

 - ENG/MODE/CRANK/NORM/IGN/START selector switch in NORM position

 - both ENG/MASTER control switches in OFF position.
 The engine is not running.

 (1) On ENG panel (115VU)
 (a) Place the ENG/MODE/CRANK/NORM/IGN/START selector switch in IGN/START position : the engine page appears
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 (Ref. Fig. 002)
R **ON A/C 106-149, 303-399, 401-499,
 (Ref. Fig. 002A)
 **ON A/C ALL
 (b) Place the MASTER 1(2) control switch in ON position
 - the starter pneumatic valve opens

 - at N2 > 16 percent the ignition system is excited

 - at N2 > 22 percent the HP fuel SOV opens

 - at N2 > 50 percent the starter valve closes and the ignition stops.

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 (c) Place the selector switch in NORM position. The engine page disappears.

 (d) If you place the ENG/MODE/CRANK/NORM/IGN/START selector switch in : NORM position after engine 1 starting then in IGN/START position prior to starting : continuous ignition is selected for engine 1. For ground start, in case of failure of the automatic starter valve actuation device : the ECU logic is compatible with a manual actuation of the start valve without any additional signal. In case of an ignition delay : the ECU operates automatically both ignition exciters after an automatic dry motoring sequence and provides information to the cockpit. During automatic starting, the ECU provides engine limit protection (N1, N2, EGT).

 (2) Start Interruption
 The interruption of automatic starting can be achieved if :

 (a) You place the MASTER control switch back to OFF. This causes :

 - the direct closure of the HP fuel SOV

 - the starter shutoff valve closure via the ECU

 - the ignition exciters deenergization.
 When auto start is initiated (MASTER control switch to ON), even
 if you place back the selector switch in NORM or CRANK position
 the start sequence is not interrupted.

 (b) The ECU aborts the starting sequence in case of detected incident :

 - starter shutoff valve failure

 - HP fuel SOV failure

 - hot start

 - stall
 - overspeed.

 - Engine fails to lightoff after continuous ignition is selected.

 (3) The monitoring of an engine start is described in 73-20-00.

 B. Alternative Start (Manual Start)
 (1) On the ENG panel (115VU)
 - the ENG/MODE/CRANK/NORM/IGN/START selector switch is in NORM position

 - both MASTER control switches are in OFF position.
 The engine is not running.

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 Ignition and Starting System
 Figure 001

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 Ignition - ECAM Display
 Figure 002

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 Ignition - ECAM Display
 Figure 002A

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 (2) ENG/MAN START pushbutton switch on the overhead panel is in OFF position

 (a) On the overhead panel : select ENG/MAN START pushbutton switch to ON.

 (b) On the ENG panel (115VU)

 1 Place the ENG/MODE/CRANK/NORM/IGN/START selector switch in
_
 IGN/START position :

 - the starter shutoff valve opens

 - the ENG page appears

 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 (Ref. Fig. 002)
R **ON A/C 106-149, 303-399, 401-499,
 (Ref. Fig. 002A)
 **ON A/C ALL
 2 Place the MASTER control switch in ON position at 20 percent
_
 N2:

 - ignition system 1(2) is excited and the HP fuel SOV opens.
　
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