W DOC AIRBUS | TSM A320F

Fire-Extinguisher Bottle 1 Low Pressure

TASK 26-23-00-810-809-A
Fire-Extinguisher Bottle 1 Low Pressure

1. Possible Causes
  • FIRE EXTINGUISHER [4015WX]
  • PUSHBUTTON SWITCH-TEST [16WH]
  • DIR-CIDS, 1 [101RH]
  • DIR-CIDS, 2 [102RH]
  • wiring
  • BOTTLE-FIRE EXTING [4005WX]
  • P/BSW-CARGO SMOKE/TEST [13WH]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 23-73-34-000-001
Removal of the CIDS Director
AMM 23-73-34-400-001
Installation of the CIDS Director
ASM 262301
AMM 26-23-41-000-004
Removal of the Cargo Fire-Extinguisher Bottle
AMM 26-23-41-400-004
Installation of the Cargo Fire-Extinguisher Bottle
AMM 26-23-42-000-001
Removal of the Cargo Fire-Extinguisher Bottle
AMM 26-23-42-400-001
Installation of the Cargo Fire-Extinguisher Bottle
3. Fault Confirmation
Subtask 26-23-00-865-050-A ** ON A/C NOT FOR ALL
A. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
49VUAIR COND/CIDS/SDF/DIR2 ESS18WHC06
49VUAIR COND/CIDS/SDF/DIR1 ESS15WHC05
122VUAIR COND/CIDS/SDF/DIR NORM/214WHT18
122VUAIR COND/CIDS/SDF/DIR NORM/117WHT17
Subtask 26-23-00-710-064-A ** ON A/C NOT FOR ALL
B. Test
   (1) Open the circuit breakers 14WH, 15WH, 17WH and 18WH, wait for approximately 10 seconds and close again.
4. Fault Isolation
Subtask 26-23-00-810-064-A ** ON A/C NOT FOR ALL
A. If the test gives a different maintenance message:
  • Do the trouble shooting procedure related to the maintenance message.
Subtask 26-23-00-810-067-B ** ON A/C NOT FOR ALL
B. If the test gives the maintenance message CRG FIRE BTL 1 LO PR:
   (1) If the fault continues:
  • Do a check of the PUSHBUTTON SWITCH-TEST [16WH] and replace it, if necessary ASM 262301.
   (2) If the fault continues:
   (3) If the fault continues:
   (4) If the fault continues:
Do a check and repair the wiring between the:
  • Bottle 1 (4015WX) connector B/C and switch (16WH) pin A/A3
  • Switch (16WH) pin A/A2 and CIDS DIR 1 (101RH) connector AA/4F
  • Switch (16WH) pin A/A2 and CIDS DIR 2 (102RH) connector AA/4F
  • Bottle 1 (4015WX) connector B/A and GND ASM 262301.
Subtask 26-23-00-810-067-C ** ON A/C NOT FOR ALL
B. If the test gives the maintenance message CRG FIRE BTL 1 LO PR:
   (1) If the fault continues:
  • Do a check of the PUSHBUTTON SWITCH-TEST [16WH] and replace it, if necessary ASM 262301.
   (2) If the fault continues:
   (3) If the fault continues:
   (4) If the fault continues:
Do a check and repair the wiring between the:
  • Bottle 1 (4005WX) connector B/C and switch (16WH) pin A/A3
  • Switch (16WH) pin A/A2 and CIDS DIR 1 (101RH) connector AA/4F
  • Switch (16WH) pin A/A2 and CIDS DIR 2 (102RH) connector AA/4F
  • Bottle 1 (4005WX) connector B/A and GND ASM 262301.
Subtask 26-23-00-810-067-D ** ON A/C NOT FOR ALL
B. If the test gives the maintenance message CRG FIRE BTL 1 LO PR:
   (1) If the fault continues:
  • Do a check of the P/BSW-CARGO SMOKE/TEST [13WH] and replace it if necessary ASM 262301.
   (2) If the fault continues:
   (3) If the fault continues:
   (4) If the fault continues:
Do a check and repair the wiring between the:
  • Bootle 1 (4015WX) connector B/C and switch (13WH) pin 1
  • Switch (13WH) pin 2 and CIDS DIR 1 (101RH) connector AA/4F
  • Switch (13WH) pin 2 and CIDS DIR 2 (102RH) connector AA/4F
  • Bootle 1 (4015WX) connector B/A and GND ASM 262301.
Subtask 26-23-00-710-067-A ** ON A/C NOT FOR ALL
C. Do the test given in Para. 3.
5. Close-up
Subtask 26-23-00-860-058-A ** ON A/C NOT FOR ALL
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:27:25 UTC
"WTRUIB" 2025