- trouble shoot the LRU(s) before you start more steps. Do the trouble shooting procedure related to the failure message.
4. Fault Isolation
_______________
A. Set the MCDU to SYSTEM REPORT/TEST (FUEL), then for:
- 06 FQIC Software Standard go to the FQIS STATUS page
- 07 FQIC Software Standard go to the FLSS STATUS page.
(1) If both the XFR Valve messages are shown:
- (Ref. TASK 28-15-00-810-805) for the Right Wing Forward Intercell XFR VALVE (29QM/72QM/10QP) message
- (Ref. TASK 28-15-00-810-806) for the Right Wing Rear Intercell XFR VALVE (30QM/73QM/12QP) message.
「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 : 001-049, 051-099, 101-149, 151-199, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 204
201-299, 401-499, Aug 01/05 CES
TASK 28-15-00-810-803
Intercell XFR VALVE 27QM/70QM/9QP (Left Forward) Fault - Stays Closed When The Fuel In The Inner-cell Is At Low Level
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
WARNING : WHEN YOU DO WORK ON THE FUEL SYSTEM WIRING, YOU MUST USE TEST
_______ EQUIPMENT THAT IS APPROVED (REFER TO INTERNATIONAL OR NATIONAL SPECIFICATIONS FOR INTRINSICALLY SAFE TEST EQUIPMENT, E.G. EN50-020, UL913 OR EQUIVALENT). TEST EQUIPMENT THAT IS NOT APPROVED CAN CAUSE FIRE OR AN EXPLOSION.
1. Possible Causes
_______________
- ACTUATOR-TRANSFER VALVE, L FWD SPAR (9QP)
- aircraft wiring
- RELAY-L WING TK LOW LEVEL CHANNEL B (7QP)
- RELAY-R WING TK LOW LEVEL CHANNEL A (8QP)
- RELAY-L OR R FWD XFR VALVE OPEN LATCH (14QP)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific multimeter
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
ESPM 20-00-00 AMM 28-15-00-740-002 Functional (BITE) Test of the Intercell Transfer
Valves AMM 28-15-51-000-001 Removal of the Actuator 9QP(10QP) AMM 28-15-51-400-001 Installation of the Actuator 9QP(10QP) AMM 28-46-00-740-001 Functional (BITE) Test ASM 28-15/02
「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 : 001-049, 051-099, 101-149, 151-199, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 205
201-299, 401-499, Aug 01/05 CES
3. Fault Confirmation
__________________
A. Table of the circuit breakers referred to in this procedure:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FUEL/FQI/CHAN/1 1QT A13 121VU FUEL/FQI/CHAN/2 2QT M27 121VU FUEL/XFR VALVE2/WING/R 4QP M23 121VU FUEL/XFR VALVE2/WING/L 3QP M22
B. Test
(1) Do the Functional BITE Test (of the FLSS) (Ref. AMM TASK 28-46-00-740-001).
(a) Examine the FLSS STATUS page. Look for one (or more) of the messages that follow:
- L LO LEVEL SENSOR 15QJ1
- R LO LEVEL SENSOR 16QJ2
- FLSCU1 7QJ
- FLSCU2 9QJ.
(b) If a message(s) listed (in the step before):
- is not shown, do step (2)
- is shown, trouble shoot the LRU(s) before you do step (2). Refer to the Fault Symptoms List/28-CFDS for the related Task number.
(2) Do the Functional BITE Test of the Intercell Transfer Valves (Ref. AMM TASK 28-15-00-740-002).
NOTE : The COMMAND FLSS BITE option does not test the intercell
____
transfer valves (ICTVs).
NOTE : The ICTVs are motor driven and the electrical power for these
____ circuits is supplied from 206PP, 28VDC, BUS 2 (Ref. ASM 28-15/02). The ICTVs will not operate on battery power.
(a) Examine the FLSS STATUS page. Look for the (left wing forward ICTV) message XFR VALVE 27QM/70QM/9QP.
(b) If the message:
- is shown, do Para. 4.A.
- is not shown, no work steps are necessary.
「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 : 001-049, 051-099, 101-149, 151-199, ∞∞28-15-00∞∞∞∞∞∞∞∞∞∞Page 206
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