TASK 74-00-00-710-044-A
Operational Test of Continuous Ignition Selection in Case of EIU Failure
1. Reason for the Job
__________________
To do an operational test of the continuous ignition logics in case of EIU
failure.
NOTE : This procedure applies only for aircraft that have the AIDS.
____
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power
71-00-00-710-003 Engine Automatic Start
71-00-00-710-028 Engine Shutdown
3. Job Set-up
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Subtask 74-00-00-861-058
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
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Subtask 74-00-00-865-058
B. Make sure that this(these) circuit breaker(s) is(are) closed:
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PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
49VU ENGINE/1 AND 2/IGN/SYS A 1JH A03 FOR 1000EM1
49VU ENGINE/1/FADEC A/AND EIU 1 2KS1 A04 121VU ENGINE/IGN/ENG1/SYS B 3JH1 P41 121VU ENGINE/IGN/ENG1/SYS A BAT 2JH1 P39 121VU ENGINE/ENG1/FADEC B/AND EIU 1 4KS1 R41
FOR 1000EM2
49VU ENGINE/2/FADEC A/AND EIU 2 2KS2 A05 121VU ENGINE/IGN/ENG2/SYS B 3JH2 P42 121VU ENGINE/IGN/ENG2/SYS A BAT 2JH2 P40 121VU ENGINE/ENG2/FADEC B 4KS2 Q40
Subtask 74-00-00-860-059
C. On the left or right MCDU, get the AIDS menu page.
Subtask 74-00-00-710-062
D. Start the engine and let it become stable at minimum idle for 2 minutes. (Ref. TASK 71-00-00-710-003)
4. Procedure
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Subtask 74-00-00-710-063
A. Do this Test:
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. on the MCDU:
- Push the line key adjacent to The AIDS PARAM LABEL CALL-UP page comes PARAM LAB indication into view
2. On the MCDU keyboard enter these
parameters:
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-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
- For engine 1: 7C/1/273/01/18
- For engine 2: 7C/2/273/10/18
3. Push the key 1L
4. Pull circuit breakers 2KS1 (2KS2) and 4KS1 (4KS2)
NOTE : Ignore the warning
____ relatives to the EUI that can occur during the procedure that follows.
5. Close circuit breakers 2KS1 (2KS2) and 4KS1 (4KS2)
6. Push the line key adjacent to the RETURN indication
7. Push the line key adjacent to the RETURN indication until the MCDU menu comes into view.
5. Close-up
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Subtask 74-00-00-710-064The parameters come into view under theRETURN indication.
The parameter shows in front of Key 1L
- The engine speed increases fromground idle to flight idle
- On the MCDU , bit 23 of selectedparameter is set to "1" (continuousignition active)
- The engine speed decreases fromflight idle to ground idle
- On the MCDU , bit 23 of selected parameter is set to "0"
the AIDS menu comes into view
MCDU MENU comes into view.
A. Stop the engine (Ref. TASK 71-00-00-710-028). Subtask 74-00-00-862-058
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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ELECTRICAL POWER SUPPLY - DESCRIPTION AND OPERATION
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R 1. Description
___________ R The ignition system requires 115V, 400Hz from the electrical system via the R ECU. The ECU controls excitation of ignition exciters A and B. R The ignition exciters transform the 115V - 400Hz current into high voltage R pulsating current. This current charges internal capacitors. The stored R energy is 5 to 8 joules. The discharge rate is of one per second and the R energy delivered is 1.5 joules. R Each engine has two independent ignition exciters R - Upper ignition exciter (IGN 1) and lower ignition exciter (IGN 2) . R - Upper ignition exciter supplies the right spark igniter (A) while lower R ignition exciter supplies the left spark igniter (B). R The two ignition exciters for each energization are controlled by ECU and R can be operated independently (starting sequence on ground) or R simultaneously (continuous ignition). The ECU selects one ignition exciter R for two successive automatic starts then selects the other ignition R exciter, this is to avoid dormant failure and premature wear of sparks R igniters.
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