On the panel 25VU:
-
the ON legend in the APU STARTpushbutton switch comes on.
On the panel 35VU:
-DC V indication decreases.
On the lower ECAM display:
-N indication increases.
On the lower ECAM display:
-N% indication increases.
-EGT increases.
-stable and surge free with an increase of EGT and N indications.
-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
- check at 50% N. On the panel 35VU: - DC V indication increases as the
starter motor de-energizes.
On the lower ECAM display: - N indication increases.
- EGT indication decreases.
- check at 95% N. On the panel 25VU: - the ON legend in the START pushbutton switch goes off. - the AVAIL legend in the START pushbutton switch comes on.
On the lower ECAM display: - AVAIL indication comes on.
- EGT in limits.
- N indication increases to 99%.
- APU GEN (amber) OFF (white) comes on.
10. On the panel 35VU: - push the APU GEN pushbutton switch to the ON position. On the panel 35VU:- the OFF legend in the APU GENpushbutton switch goes off.
On the lower ECAM display: - the generator load, voltage and frequency indication are in the specified limits (no amber or red indication).
11. On the panel 30VU: - push the APU BLEED pushbutton switch to the ON position. On the panel 30VU:- the ON legend in the APU BLEEDpushbutton switch comes on.
On the lower ECAM display: - momentarily there is a small increase in EGT.
12. On the panel 30VU: - push the PACK1 and PACK2 pushbutton switches to the ON position. On the panel 30VU:- the OFF legends in the PACK1 andPACK2 pushbutton switches go off.
On the lower ECAM display:
-------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
13. On the panel 30VU:
-release the PACK1 and PACK2 pushbutton switches to OFF.
14. On the panel 35VU:
-push the APU GEN pushbutton switch to the OFF position.
15. On the panel 25VU:
-release the APU MASTER SW pushbutton switch.
16. On the MCDU 1(2) AVIONICS STATUS page:
-there is no APU related indication.
-RPM stays at 100% plus/minus 1%.
-EGT changes to the pneumatic load.
On the panel 30VU:
-
the OFF legends in the PACK1 andPACK2 pushbutton switches come on.
On the panel 35VU:
-
the OFF legend in the APU GENpushbutton switch comes on.
On the lower ECAM display:
-APU GEN (amber) OFF (white) indication comes on.
On the panel 25VU:
-
the AVAIL legend in the STARTpushbutton switch goes off (N < 95%).
On the lower ECAM display:
-
the AVAIL indication goes off, when the AVAIL legend in the START pushbutton switch goes off.
-RPM decreases to 75% and stays at 75% for 60 seconds (cool down).
-APU BLEED indicator goes off.
-EGT and N indicator go off, when ECB powered down.
NOTE : To make sure that the air intake
____ fully closes, wait for amber XX indication of RPM and EGT.
R **ON A/C 063-099, 401-499,
Subtask 49-00-00-710-053-A
A. Operational Test of the APU
-------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the panel 35VU:
-push the BAT1 and BAT2 pushbutton switches to the AUTO position.
2. On the panel 11VU:
-push the BLEED pushbutton
switch on the ECAM panel.
3. On the panel 30VU:
-push the APU BLEED pushbutton switch to the OFF position.
4. On the panel 30VU:
-set the APU X BLEED switch to the AUTO position.
5. On the panel 40VU:
-push the fuel X FEED pushbutton switch to the CLOSED position.
6. On the panel 25VU:
-push the APU MASTER SW pushbutton switch to the ON position.
7. On the panel 11VU:
-push the APU pushbutton switch on the ECAM panel.
On the panel 35VU:
-DC V battery indicators show eachbattery voltage (28V maximum, 21Vminimum).
On the ECAM panel display:
-
the BLEED system page comes on.
On the panel 30VU:
-
the ON legend in the APU BLEEDpushbutton switch goes off.
On the lower ECAM display:
-
the X BLEED valve is in the closedposition.
On the panel 40VU:
-
the ON legend in the fuel X FEEDpushbutton switch goes off.
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