(2) If the ADW1 shows that load control valve is fully open (e.g. ADW1 = 08109):
- in the APU compartment, do a check of the load control valve position.
(a) If the load control valve is fully open:
- do a check of the APU bleed system for leaks.
1 If the fault continues:
_
- do the trouble shooting procedure of low air pressure in the right crossbleed duct (Ref. TASK 36-12-00-810-804).
R **ON A/C 001-003, 051-099, 401-499,
E. If the LCIT is more than 10 deg.C higher than the outside air temperature (TAT):
- check for hot gas ingestion (make sure that the main engine exhaust is not blown into the APU air intake),
- check for hot gas leaks at the APU compressor split lines.
(1) If the fault appears to be intermitted:
- replace the LCIT SENSOR (Ref. AMM TASK 49-23-15-000-001) and (Ref. AMM TASK 49-23-15-400-001).
(a) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
F. If the LCIT is more than 10 deg.C lower than the outside air temperature (TAT):
- replace the LCIT SENSOR (Ref. AMM TASK 49-23-15-000-001) and (Ref. AMM TASK 49-23-15-400-001).
(1) If the fault continues:
- replace the ECB (59KD) (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001).
(a) If the fault continues:
- do do a check and repair of the aircraft wiring from the ECB 59KD AB/B2, B3 to the LOAD wiring COMPRESSOR-INLET TEMPERATURE-SENSOR studs/alumel, chromel (Ref. ASM 49-61/02).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A272
Config-1 Aug 01/05 CES
G. If: .the bleed pressure is normal on one pack but is low with the other pack in operation, .the APU self test gives no maintenance message.
NOTE : Aircraft configuration:
____
- the PACK 1 or 2 p/bsw is on,
- the APU BLEED valve p/bsw is ON.
NOTE : If one pack is operating, the external temperature and the cabin
____ temperature are high, APU bleed-pressure fluctuation occurs when you start the second pack to decrease the cabin temperature. This bleed pressure fluctuation is a normal effect after the start of the two pack operation in maximum cooling mode until the cabin temperature has decreased sufficiently after some time.
- isolate left or right,
(1) If the left side is isolated:
- do a leak check of the left pack and the related bleed ducts.
(2) If the right side is isolated:
- replace the X-BLEED VALVE (6HV) (Ref. AMM TASK 36-12-52-000-001) and (Ref. AMM TASK 36-12-52-400-001).
(a) If the fault continues:
- do a leak check of the right pack and the related bleed ducts.
H. If: .the bleed pressure is low with one engine in MIN IDLE operation, to supply back pressure on ENG. .the APU self test gives no maintenance message.
NOTE : On the APU page of the lower ECAM display unit, the BLEED (PSI)
____
value is within 8 psig.
NOTE : Aircraft configuration:
____
- the PACK 1 and 2 p/bsw are OFF,
- the APU BLEED valve p/bsw is ON,
- do one MES at a time.
- isolate the left or right engine.
(1) For the related engine:
- do the trouble shooting of the engine STARTER SHUTOFF VALVE (SAV). Refer to the related trouble shooting procedure in the applicable
P. Block 101.
(a) If the fault continues:
- do the operational test of the BMCs (Ref. AMM TASK 36-11-00-740-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-003, 051-099, 401-499, ∞∞49-00-00∞∞∞∞∞∞∞∞∞∞Page A273
Config-1 Aug 01/05 CES 1 If the test gives a maintenance message:
_
- do the related trouble shooting procedure.
2 If the test is OK:
_
- do a leak check of the aircraft bleed system.
J. If: .the bleed pressure has large fluctuation of +/- 20 psig with both packs in operation. .the APU self test gives no maintenance message.
NOTE : If one pack is operating, the external temperature and the cabin
____ temperature are high, APU bleed-pressure fluctuation occurs when you start the second pack to decrease the cabin temperature. This bleed pressure fluctuation is a normal effect after the start of the two pack operation in maximum cooling mode until the cabin temperature has decreased sufficiently after some time.
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