5. Close-up
________ Subtask 26-22-00-410-056
A. Close Access
(1)
Close the access door 314AR.
(2)
Close the APU access door 315AL:
(3) Remove the access platform(s). Subtask 26-22-00-865-066
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD TASK 26-22-00-200-001
Inspection/Check of the APU Fire Extinguishing System
WARNING : THE CARTRIDGE IS AN EXPLOSIVE DEVICE. REMOVE IT BEFORE YOU
_______ DISASSEMBLE THE FIRE EXTINGUISHER BOTTLE. TO PREVENT INJURY TO THE PERSONNEL BECAUSE OF THE EXPLOSION OF THE CARTRIDGE IF IT HAS NOT BEEN FIRED:
-INSTALL A SHUNT DEVICE.
-THIS WILL SHUNT THE PINS TOGETHER ON THE CARTRIDGE BEFORE ITS
REMOVAL.
DO NOT USE A FOIL SHUNT.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific warning notice
No specific access platform 4.0 m (13 ft. 1 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
26-22-41-000-001 Removal of the Fire Extinguisher Bottle (11WF) (for corrective action) 26-22-41-400-001 Installation of the Fire Extinguisher Bottle (11WF) (for corrective action) 26-22-42-000-001 Removal of the Fire-Extinguisher Bottle Cartridge (12WF) (for corrective action) 26-22-42-400-001 Installation of the Fire Extinguisher Bottle Cartridge (12WF) (for corrective action) 26-22-43-960-001 Replacement of the Discharge Indicator Disc (4035WM) (for corrective action) 26-22-00-991-001 Fig. 601
3. Job Set-up
__________
Subtask 26-22-00-941-051
A. Put the warning notice on the overhead panel 25VU to tell the persons not to operate the APU.
Subtask 26-22-00-010-051
B. Get Access
(1)
Put the access platform in position below the APU compartment.
(2)
Open access door 315AL.
(3)
Open access door 314AR.
4. Procedure
_________
(Ref. Fig. 601/TASK 26-22-00-991-001) R **ON A/C 001-049, 101-149, 151-199, 211-299, 301-399, 401-499,
Subtask 26-22-00-210-050
A. Inspection of the APU Fire Extinguishing System
(1) Fire Extinguisher Bottle
(a)
Make an inspection of the fire extinguisher bottle for scratches, dents and corrosion.
(b)
Make sure that the identification plate and caution plate are installed and readable.
(c)
Make an inspection of the mounting lugs, support brackets and the welded seams for cracks, breaks and tears.
(d)
Make an inspection of the connections for dents or corrosion and that the safety wire is correct.
NOTE : Replace the damaged part if necessary (Ref. TASK 26-22-41-
____ 000-001) (Ref. TASK 26-22-41-400-001).
R APU Fire Extinguishing System Figure 601/TASK 26-22-00-991-001
1EFF : 1 1 1CES ALL 1 111 26-22-00 Page 605 May 01/01
(2) Cartridge
(a) Make an inspection at the cartridge connection for damage or corrosion.
NOTE : The maximum service life for:
____
-
the cartridges dated and purchased before the JULY 31/1991 is 6 years,
-
the cartridges dated and purchased after the JULY
31/1991 is 10 years. The maximum storage and service life:
-
the cartridges dated and purchased before the JULY 31/1991 is 10 years. Thus, storage life longer than 4 years decreases the service life of the cartridge.
-
the cartridges dated and purchased after the JULY 31/1991 is 15 years. Thus, storage life longer than 5 years decreases the service life of the cartridge.
(b)
Make an inspection of the cartridge service date given on the cartridge.
(c)
Make sure that the cartridge service life or a combination of storage/service life has not expired.
(d)
Make sure that the cartridge has sufficient service life until the next scheduled inspection.
NOTE : Replace the cartridge (Ref. TASK 26-22-42-000-001) (Ref.
____
TASK 26-22-42-400-001):
-
dated and purchased before the JULY 31/1991 that has more than 10 years of storage/service life,
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