8. After 60 seconds, on the overhead CTL & PNL panel 22VU:
- Release the ENG/MAN START/1(2)
On the lower ECAM display unit:
- The symbol for the starter valve isin the closed position after the reset of ECU.
NOTE : After the reset of the ECU, the
____ ECU will command the starter valve to open when the core speed is 10 percent and the dry motoring procedure is performed.
This will dry the fuel that can be in the combustor.
- The ON legend of this pushbuttonswitch goes off.On the lower ECAM display unit:
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-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------pushbutton switch. - The symbol for the starter valve is in the closed position.
9. On the panel ENG 115VU: On the lower ECAM display unit:
- Set the - The ENGINE page goes out of view. ENG/MODE/CRANK/NORM/IGN/START selector switch to NORM.
10. On the HYD/FUEL panel 40VU: - The OFF legends of these pushbutton
- Release all the FUEL/PUMPS switches come on.
pushbutton switches.
Subtask 71-00-00-200-053
B. During engine coastdown, while the components continue to turn listen for unusual noise from these components.
NOTE : Clicking fan blades, gear noise and seal rubs are normal noise.
____
Subtask 71-00-00-210-053
C. Make a check of the engine, fan frame and turbine for unusual roughness.
(1) Safety precaution :
WARNING : DO NOT LET THE HMU TEMPERATURE EXCEED 100 DEG.C (212
_______
DEG.F).
NOTE : Hydromechanical Units (HMUs) that have fluorocarbon (Viton)
____ external seals (SB 73-015) can leak fuel for a short time when they are below 0 deg.C (32.00 deg.F) (Modification 1 and 2)
R (Ref. TASK 71-00-00-790-002). If the ambient temperature is below -40 deg.C (-40.00 deg.F) it is recommended to heat the HMU (modification 1 and 2) to minimize leakage during starts per the following procedure :
(a) Heat the HMU housing with a suitable hot air blower (Keco GH100, Aerotech BT400-45 or equivalent) operating at 140 deg.C (284.00 deg.F) until the HMU housing temperature is greater than 25 deg.C
(77.00 deg.F).
NOTE : The HMU should be warm to the touch but not hot.
____
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(2) Make a check of the fuel-nozzle manifold-shrouds for leaks. No leaks are permitted.
(3) Fuel on the shrouds is an indication of a leak in the system.
(4) Make an inspection of the lubrication system lines, fittings and accessories for leaks (Ref. TASK 79-00-00-210-003).
5. Close-up
________ Subtask 71-00-00-869-093
A. If during the test the ECAM warning message ENG FAIL came into view , reset the two Flight Warning Computers (FWC). To do this open then close the circuit breakers 2WW and 3WW.
Subtask 71-00-00-862-059
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
Subtask 71-00-00-865-063
C. 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
Subtask 71-00-00-869-094
D. Put the aircraft back to its initial configuration.
(1) Stop the pneumatic supply to the aircraft:
(a) Disconnect the HP ground power unit or stop the APU.
(2) Do the EIS stop procedure (Ref. TASK 31-60-00-860-002).
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E. Close the thrust-reverser doors (Ref. TASK 78-36-00-410-040): FOR 1000EM1 451AL, 452AR FOR 1000EM2 461AL, 462AR.
Subtask 71-00-00-440-056
F. Make the thrust reverser serviceable (Ref. TASK 78-30-00-081-041).
Subtask 71-00-00-410-068
G. Close the fan cowl doors (Ref. TASK 71-13-00-410-040):
FOR 1000EM1
437AL, 438AR
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本文链接地址：A320飞机维护手册 AMM 动力装置 POWER PLANT 1(43)
