A320 Trouble Shooting Manual 排故手册 机载辅助动力 1(53)

 - TOTAL PRESS XDCR (8044KM) (Ref. TASK 49-00-00-810-828),

 - SURGE CONTROL VALVE (8058KM) (Ref. TASK 49-00-00-810-830),

 - IGV ACTUATOR (8014KM) (Ref. TASK 49-00-00-810-824),

 - LOAD CONTROL VALVE (8050KM) (Ref. TASK 49-00-00-810-829).

 「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 A247
 Config-1 Aug 01/05 CESR **ON A/C 001-003, 051-099, 401-499,

 B. If: (Ref. Fig. 201/TASK 49-00-00-991-002) .there is no or low bleed pressure, .the APU self test gives no maintenance message, .the EGT(ECAM) is more than 25 deg. C higher than the EGTcorr:
 NOTE : EGTcorr = EGTA + EGT(LCIT)
____ EGTA = 385 deg. C (evaluated on specific LCIT (37.8 deg. C) EGT(LCIT) = value of Figure 201.
 - replace the APU (Ref. AMM TASK 49-11-11-000-001) and (Ref. AMM TASK 49-11-11-400-001).
 **ON A/C 001-003, 051-062,
 C. If: .there is no or low bleed pressure, .the APU self test gives no maintenance message, .the EGT does not rise and no increase in BLEED (PSI) pressure on the APU system page.
 NOTE : Aircraft configuration:
____

 - the PACK 1 and 2 p/bsw are off,

 - the APU BLEED valve p/bsw is ON.

 - Review the last leg and the previous leg reports for faulted LRU's and replace the faulted LRU's.

 - Remove and replace the A/C bleed switch.

 D. If: .there is no or low bleed pressure, .the APU self test gives no maintenance message, .the EGT rises and the BLEED (PSI) pressure is low on the APU system page.
 NOTE : Aircraft configuration:
____

 - the PACK 1 and 2 p/bsw are off,

 - the APU BLEED valve p/bsw is ON.

 - Review the LRU's faults in the last and previous leg reports and replace faulted LRU's
 (1) If the Bleed flow sensor assembly failed:
 - replace the Bleed flow sensor assembly (Ref. AMM TASK 49-51-14-000-001) and (Ref. AMM TASK 49-51-14-400-001)
 「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 A248
 Config-1 Aug 01/05 CES

 Correction for Inlet Temperature (LCIT), RTL
 Figure 201/TASK 49-00-00-991-002

 「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 A249
 Config-1 Aug 01/05 CES

 (2) IF the surge control valve failed

 - replace it (Ref. AMM TASK 49-51-52-000-002) and (Ref. AMM TASK 49-51-52-400-002)

 (3) If the load control valve is not fully open:

 - Check the load control valve position during the APU operation.

 - replace the LOAD CONTROL VALVE P12 (Ref. AMM TASK 49-51-51-000-001) and (Ref. AMM TASK 49-51-51-400-001).

 (4) If the load control valve is fully open:

 - remove the IGV ACTUATOR P21 (Ref. AMM TASK 49-23-51-000-002).

 - do a push/pull test on the IGVs to check the IGV movement. .make sure that the IGV has a travel range of 1 in. (25.3999 mm), .measure the force of the IGV movement.

 (a) If a force less than 30 lbf (13.3446 daN) is necessary to move the IGVs:

 - replace the IGV ACTUATOR P21 (Ref. AMM TASK 49-23-51-000-002) and (Ref. AMM TASK 49-23-51-400-002).

 (b) If a force more than 30 lbf (13.3446 daN) is necessary to move the IGVs or the movement is less than 1 in. (25.3999 mm):

 - replace the APU (Ref. AMM TASK 49-11-11-000-001) and (Ref. AMM TASK 49-11-11-400-001).

 (5) If the fault continues:

 - check the APU bleed system for leaks.

 (6) If the fault continue:

 - check the A/C bleed system for air leaks.

 (7) If the fault continue:

 - Removal and replace the ECB (Ref. AMM TASK 49-61-34-000-001) and (Ref. AMM TASK 49-61-34-400-001)
R **ON A/C 063-099, 401-499,
 C. If: .there is no or low bleed pressure, .the APU self test gives no maintenance message, .the EGT does not rise and no increase in BLEED (PSI) pressure on the APU system page.
 NOTE : Aircraft configuration:
____

 - the PACK 1 and 2 p/bsw are off,

 - the APU BLEED valve p/bsw is ON.

 - Review the last leg report and the previous leg reports for faulted LRU's and replace faulted LRU's.

 - Remove and replace A/C bleed switch.