b Do a visual check of the pressure relief valve 97QM to see
_
if it:
- has become blocked
- can open (functionally operate) with a full and free movement.
c If necessary, remove any blockage/obstruction or replace
_ the VALVE-PRESSURE RELIEF, CTR TK (97QM) (Ref. AMM TASK 28-25-45-000-001) and (Ref. AMM TASK 28-25-45-400-001).
3 Do an inspection of the center tank vent pipe (Ref. AMM TASK
_
28-12-00-200-001).
a If necessary, replace any damaged or blocked section(s) of
_ the center tank vent pipe.
4 Do a check of the center tank refuel valve 10QU as follows:
_ a Remove the center tank refuel valve 10QU.
_ b Do a visual inspection of the refuel valve 10QU, valve
_
position.
c If the valve is (stays) in the open position, replace the
_ VALVE-REFUEL, CTR TK (10QU) (Ref. AMM TASK 28-25-51-000-002) and (Ref. AMM TASK 28-25-51-400-002).
d If the valve is in the closed position or if the valve is
_ replaced in step c_, do an operational test of the center tank refuel valve 10QU (to see if it can open and close) (Ref. AMM TASK 28-25-00-710-003).
e If there is any malfunction of the refuel valve 10QU and/or
_ related sub-systems, refer to the Fault Symptoms (at the front of the TSM and/or chapter 28, for the related Task number) and do the necessary troubleshooting.
(c) If, when all the tests and inspections are complete: 1 The cause(s) of the operation of the overpressure protector
_ 96QM (broken/damaged) has been found and all the related unserviceable LRUs replaced, refuel the aircraft and return to service.
2 No cause for the operation of the overpressure protector 96QM
_ (broken/damaged) can be seen, send AIRBUS a report of the incident.
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 301-399, ∞∞28-12-00∞∞∞∞∞∞∞∞∞∞Page 207
Aug 01/05R CES
R **ON A/C ALL
R TASK 28-12-00-810-802 R Fuel - Tank Venting, Center Tank Overpressure Protector 96QM Broken R WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______ R CAUTION : DO NOT LET THE REFUEL PRESSURE BE MORE THAN THE MAXIMUM SAFE PRESSURE
_______ R OF 50psi (3.45bar).
R 1. Possible Causes
_______________
R - VALVE-REFUEL, CTR TK (10QU)
R - VALVE-PRESSURE RELIEF, CTR TK (97QM)
R - PROTECTOR-OVERPRESSURE, CTR TK (96QM)
R - the refuel supply pressure is above the safe limit
R - center-tank vent-pipe
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R 28-12-00-810-801 R R AMM 28-12-00-200-001 R AMM 28-12-41-000-003 R AMM 28-12-41-200-002 R AMM 28-12-41-400-003 R AMM 28-25-00-710-003 R AMM 28-25-45-000-001 R R AMM 28-25-45-400-001 R R AMM 28-25-51-000-002 R AMM 28-25-51-400-002 Fuel - Unwanted Transfer From The Left Wing Tank To The Center Tank At Any Time Inspection of the Tank Venting System Removal of the Overpressure Protector 96QM Inspection of the Overpressure Protector 96QM Installation of the Overpressure Protector 96QM Operational Test of the Refuel System Removal of the Center-Tank Pressure-Relief Valve (97QM) Installation of the Center-Tank Pressure-Relief Valve (97QM) Removal of the Refuel Valve 10QU Installation of the Refuel Valve 10QU
R AMM 28-12-00 P.Block 001 TANK VENTING SYSTEM
R 3. Fault Confirmation__________________
R A. Test
R NOTE : The function of the overpressure protector 96QM is to protect the____
R center tank structure from possible damage.
R The operation of the overpressure protector 96QM will safely
R release the (unwanted) pressure to the atmosphere through the left
R wing tank ventilation system.
「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 : ALL ∞∞28-12-00∞∞∞∞∞∞∞∞∞∞Page 208
Aug 01/05 CESR The defects that follow (and/or) can cause the overpressure R protector 96QM to break/operate: R - the center tank vent pipe is blocked R - the refuel supply pressure is above the safe limit R - the pressure relief valve 97QM cannot open (or cannot open R quickly or sufficiently) to release the (unwanted) pressure R safely to the atmosphere through the right wing tank ventilation R system.
R (1) Do the Inspection of the Overpressure Protector 96QM (Ref. AMM TASK R 28-12-41-200-002). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 FUEL 燃油1(11)
