5. Close-up
________
Subtask 74-21-30-420-054
A. Install spark igniter (Ref. TASK 74-21-30-400-002)
Subtask 74-21-30-410-055
B. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the thrust reverser cowl doors: (Ref. TASK 78-36-00-410-040) FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR
(3) Remove the access platform(s).
Subtask 74-21-30-440-052
C. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
Subtask 74-21-30-410-056
D. Close Access
(1) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2) Remove the warning notice(s).
Subtask 74-21-30-865-059
E. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1JH FOR 1000EM1 2JH1, 3JH1 FOR 1000EM2 2JH2, 3JH2
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SWITCHING - DESCRIPTION AND OPERATION
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1. General
_______
The ignition system is controlled by :
- the ECU
- the EIU
- ENG START panel 115VU (ENG/MASTER 1 control switch and
ENG/MODE/CRANK/NORM/ IGN/START selector switch)
- the overhead panel (selection of manual starting).
2. Description
___________
A. ENG Panel (115VU) Engine start panel is located on the center pedestal in the cockpit. It is composed of :
(1) ENG/MODE/CRANK/NORM/IGN/START selector switch This switch is common to both engines and can be placed in any of the three position CRANK, NORM, and IGN/START.
(a) CRANK position In CRANK position no ignition system is supplied but an engine dry motoring is possible.
(b) MODE/NORM position This position is selected by the pilot at the end of starting sequence. In this position the FADEC can select continuous ignition under some flight conditions (i.e. icing, EIU failure).
(c) IGN/START position
This position is selected for :
- normal starting procedure (automatic)
- alternate starting procedure (manual)
- continuous ignition after starting sequence.
(2) Two ENG/MASTER control switches
There is a MASTER control switch for each engine.
(a) With the MASTER control switch in OFF position :
- the HP fuel shut off valve is closed
- the engine is stopped This position of the MASTER control switch overrides any ECU function.
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- normal starting procedure (automatic)
- alternate starting procedure (manual)
- wet crank procedure
- normal operation.
(3) Two annunciator FAULT legends An amber annunciator FAULT legend dedicated to each engine is supplied by the EIU when :
- a starting failure is detected in AUTO MODE
- or a disagreement occurs between the HP fuel shut off valve and the control.
(4) Two FIRE warning lights A red warning light dedicated to each engine is supplied by the FDU (Fire Detection Unit) when a fire occurs.
B. ENG/MAN START Section of Panel 22VU It is located on the overhead panel in the cockpit. There are two pushbutton switches, one for each engine. Each pushbutton switch serves for a manual starting procedure only.
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E 56-5B E E E IGNITION STARTING AND CONTINUOUS RELIGHT - DESCRIPTION AND OPERATION
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1. Description
___________ The ignition circuit is supplied with 115VAC - 400Hz. The ignition of the spark igniters is controlled via the ECU and EIU. The two ignition systems are independent.
- the ECU selects one or two spark igniters depending on the Flight/Ground status and the engine mode (automatic start, manual start or continuous ignition): Both spark igniters are always selected except during automatic start on ground during which only one spark igniter is selected (the same spark igniter is selected for two successive starts).
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