DOC AIRBUS | AMM A320FIGNITION SYSTEM COOLING - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
The ignition cables are air cooled in order to not exceed temperature limits: 204 deg.C (399,2 deg.F) (steady state), 232 deg.C (449,6 deg.F) (transient).
Cooling air for the high energy igniter harness is taken from the fan frame outlet near the electrical junction box.
** ON A/C NOT FOR ALL The ignition cables are air cooled in order to not exceed temperature limits: 204 deg.C (399,2 deg.F) (steady state), 232 deg.C (449,6 deg.F) (transient).
Cooling air for the high energy igniter harness is taken from the fan frame outlet near the electrical junction box.
2. Description
Booster discharge air is bled from the fan frame hub. The air is carried by a tube to the tube bundle junction plate at 6 o'clock (alf). There the cooling air enters the convoluted circuits of the two ignition leads through an inlet adaptor. The air exits the lead at the spark ignitor-plug connector and becomes ventilation air within the core cowlings.
Booster discharge air is bled from the fan frame hub. The air is carried by a tube to the tube bundle junction plate at 6 o'clock (alf). There the cooling air enters the convoluted circuits of the two ignition leads through an inlet adaptor. The air exits the lead at the spark ignitor-plug connector and becomes ventilation air within the core cowlings.
Ignition Cooling - General