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FUEL MENU Normal operation 61/84
The items related to TAXI are complete.
We will now discuss items related to
the fuel system that you will encounter
during normal climb, cruise and descent.
FUEL MENU Normal operation 62/84
You are in climb, the slats are now
retracted.
Observe the CTR TK FEEDG message
reappears. This indicates (at slats
retraction) the center tank pumps are
again feeding the engines.
Seelleecctt tthhee ECAMFFUELL ppaaggee oonn tthhee ECP..
This is another automatic function of
the center tank pumps with the MODE SEL
pb in AUTO .
FUEL MENU Normal operation 63/84
You are in climb, the slats are now
retracted.
Observe the CTR TK FEEDG message
reappears. This indicates (at slats
retraction) the center tank pumps are
again feeding the engines.
Noo.. Prreessss tthhee FFUELL kkeeyy..
This is another automatic function of
the center tank pumps with the MODE SEL
pb in AUTO .
FUEL MENU Normal operation 64/84
You are in climb, the slats are now
retracted.
Observe the CTR TK FEEDG message
reappears. This indicates (at slats
retraction) the center tank pumps are
again feeding the engines.
Noo.. Prreessss tthhee FFUELL kkeeyy..
This is another automatic function of
the center tank pumps with the MODE SEL
pb in AUTO .
FUEL MENU
Normal operation 65/84
Observe the corresponding pump
indications on the ECAM (in-line green).
FUEL MENU Normal operation 66/84
You are now in cruise.
Notice the CTR TK FEEDG message has again
disappeared indicating that the center tank pumps
have automatically shut off. However the center
tank is not empty and an AUTO function has again
occurred.
To explain why, we must look at fuel
recirculation.
FUEL MENU Normal operation 67/84
FUEL MENU Normal operation 68/84
Some fuel to the engines is diverted to cool
the Integrated Drive Generators (IDGs) then
returns to the wing tanks.
If the engines are fed from the center tank
and the wing tanks are full, the center tank
pumps automatically shut off.
The inner tank pumps take over and feed the
engines so that there is room for fuel from the
IDGs.
FUEL MENU
Normal operation 69/84
After the inner tank pumps have fed
approximately 500 kg of fuel, the center tank
pumps automatically restart.
FUEL MENU
Normal operation 70/84
You are in descent.
To better illustrate the remaining indications,
we will keep the ECAM FUEL page displayed.
The center tank pumps have automatically
shut off (cross- line green) because the center
tank is empty.
The inner tanks are now again feeding the
engines.
Let’s see what happens when the inner tanks
reach a low level.
FUEL MENU
Normal operation 71/84
When either inner tank reaches a low level
limit, both transfer valves open automatically
transferring fuel from the outer to the inner
tanks.
FUEL MENU Normal operation 72/84
Click on either outer tank and observe
the fuel transferring.
After at least one transfer valve is open, the
message OUTER TK FUEL XFRD is displayed
on the E/WD.
FUEL MENU Normal operation 73/84
No. Click on either outer tank on the
ECAM FUEL page.
After at least one transfer valve is open, the
message OUTER TK FUEL XFRD is displayed
on the E/WD.
FUEL MENU Normal operation 74/84
No. Click on either outer tank on the
ECAM FUEL page.
After at least one transfer valve is open, the
message OUTER TK FUEL XFRD is displayed
on the E/WD.
FUEL MENU
Normal operation 75/84
The fuel is now totally transferred and the
outer tanks are empty.
FUEL MENU Normal operation 76/84
The items related to the fuel system
during climb, cruise and descent are
complete.
We will now discuss items related to
the fuel system that you will encounter
during post flight.
FUEL MENU Normal operation 77/84
After the engines are shutdown, the
fuel pumps are switched off.
Swiittcchh ooffff tthhee lleefftt ttaannkk ppuumpp 11..
FUEL MENU Normal operation 78/84
After the engines are shutdown, the
fuel pumps are switched off.
Noo.. Prreessss tthhee LL TTK PUMP 11 ppbb ssw..
FUEL MENU Normal operation 79/84
After the engines are shutdown, the
fuel pumps are switched off.
Noo.. Prreessss tthhee LL TTK PUMP 11 ppbb ssw..
FUEL MENU Normal operation 80/84
Continue by switching off the left
tank pump 2.
The left tank pump 1 is off, (cross-line
amber).
FUEL MENU Normal operation 81/84
　
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