- SYS1/ESS TEST RELAY (46LP)
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific 1 ALLEN KEY 3/32 IN
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION
-------------------------------------------------------------------------------
AMM 26-12-12-000-001 Removal of the ENG/APU Fire Panel (1WD)
AMM 26-12-12-400-001 Installation of the ENG/APU Fire Panel (1WD)
AMM 26-22-00-710-001 Operational Test of the APU Fire-Extinguishing
Loop/Squib AMM 26-22-41-000-001 Removal of the Fire Extinguisher Bottle (11WF) AMM 26-22-41-400-001 Installation of the Fire Extinguisher Bottle (11WF) ASM 26-22/01 ASM 33-14/17
3. Fault Confirmation
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A. The APU FIRE EXTINGUISHING PANEL 20VU (p/n 330TS08Y) has a fault. Special operation is necessary. Incorrect operation causes the APU fire extinguisher bottle to discharge. Airbus supplies a new 20VU panel that corrects this fault. See TFU 26.22.00.007 for more data.
(1) Maintenance recommendation:
(a) Before the test:
- Pull the CIRCUIT BREAKER 30WF on panel 120VU.
「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 : ALL ∞∞26-22-00∞∞∞∞∞∞∞∞∞∞Page 214
May 01/05R
CES
R (b) During the test:
R - Push the APU FIRE TEST BUTTON quickly and fully.
R - Hold it fully during the test.
R - Release it quickly.
R (c) After the test:
R - Close the CIRCUIT BREAKER 30WF on panel 120VU.
R (2) Do the operational test of the APU fire-extinguishing system (Ref.
R AMM TASK 26-22-00-710-001).
4. Fault Isolation
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A. On the FIRE PANEL 20VU: if the DISCH legend in the AGENT pushbutton switch stays on (is on):
- do a check if the red disk of the discharge indicator (4035WM) is visible.
(1) If the red disk is ruptured:
- replace the discharged Fire Extiguishing Bottle (11WF) (Ref. AMM TASK 26-22-41-000-001) and (Ref. AMM TASK 26-22-41-400-001).
(2) If the red disk is visible:
- get access to the APU compartment and do a check for signs of extiguisher agent.
(a) If there are signs of extinguisher agent in the APU compartment:
- replace the discharged Fire Extiguishing Bottle (11WF) (Ref. AMM TASK 26-22-41-000-001) and (Ref. AMM TASK 26-22-41-400-001).
(b) If there are no signs of extinguisher agent in the APU compartment:
- get access to the fire-extinguishing bottle,
- put an ALLEN KEY 3/32 IN into the pressure switch hexagon test-socket of the fire-extinguishing bottle,
- slowley turn the allen key clockwise or counterclockwise approx. 10 degrees,
- release the allen key and the pressure effect puts the allen key back to its initial position.
1 If the allen key stays in its clockwise or counterclockwise
_
position:
- replace the discharged Fire Extiguishing Bottle (11WF) (Ref. AMM TASK 26-22-41-000-001) and (Ref. AMM TASK 26-22-41-400-001).
2 If the allen key turns back to its initial position:
_
- do a check and/or repair of the wiring from FIRE EXTINGUISHING BOTTLE (11WF) 11WF-A/C to ENG/APU FIRE PANEL (1WD) 1WD-EE/K;
「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 : ALL ∞∞26-22-00∞∞∞∞∞∞∞∞∞∞Page 215
Nov 01/04 CES FIRE EXTINGUISHING BOTTLE (11WF) 11WF-A/B to GND; (Ref. ASM 26-22/01).
a_ If the wiring is OK:
- replace the ENG/APU FIRE PANEL (1WD)
(Ref. AMM TASK 26-12-12-000-001) and (Ref. AMM TASK 26-
12-12-400-001).
b If the fault continues:
_
- replace the SYS1/ESS TEST RELAY (46LP).
c If the fault continues:
_
- do a check and/or repair of the wiring from ENG/APU FIRE PANEL (1WD) 1WD-EE/L to SYS1/ESS TEST RELAY (46LP) 49LP-A/B1 (Ref. ASM 33-14/17).
B. Do the test as given in the Para. 3.A.
「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 : ALL ∞∞26-22-00∞∞∞∞∞∞∞∞∞∞Page 216
Nov 01/04R
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本文链接地址：A320 Trouble Shooting Manual 排故手册 FIRE PROTECTION 防火(113)
