Subtask 21-20-00-865-053
E. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU AIR COND/RECIRC FAN/R/SPLY 3HG W18 122VU AIR COND/RECIRC FAN/L/SPLY 1HG X18
Subtask 21-20-00-860-053
F. Safety Precautions
(1)
On the panel 30VU:
(a)
Make sure that:
-
the APU BLEED pushbutton switch is in the off position (the ON legend is off) and,
-
the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).
(b)
Put a warning notice in position to tell persons not to operate these pushbutton switches.
(2)
On the HP and the LP ground connector put a warning notice in position to tell persons not to supply the ground air.
4. Procedure
_________
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220,
Subtask 21-20-00-210-050
A. Inspection (Ref. Fig. 601/TASK 21-20-00-991-004, 602/TASK 21-20-00-991-006)
(1) Do a general visual inspection of the riser ducts for:
-breakages, cracks and delamination of the composite material,
-security of installation of the duct system and,
-correct installation and general condition of the duct connections.
Riser Ducts - General Component Location Figure 601/TASK 21-20-00-991-004
R 1EFF : 1 1 1CES ALL 1 111 21-20-00 Page 607 May 01/04
Riser Duct/Dado Panel - Critical Distance
Figure 602/TASK 21-20-00-991-006
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 21-20-00Page 608 1201-220, 1May 01/05 1 1 1CES 1
(2)
Do a check of the critical distance of 25 mm (0.9842 in.) between the riser duct (1) and the dado panel holder (2). If the distance is less than 25 mm (0.9842 in.) continue as follows:
-wind 2 layers of tape (3) BONDING AND ADHESIVE COMPOUNDS (Material No. 08-107) around the riser duct (1),
-cut a piece of the tape (4) BONDING AND ADHESIVE COMPOUNDS (Material No. 08-085) of 25 mm (0.9842 in.) x 40 mm (1.5748 in.) and put it in position in the area of the dado panel fastener,
-wind 2 layers of tape (3) BONDING AND ADHESIVE COMPOUNDS (Material No. 08-107) around the riser duct (1).
(3)
Replace any worn, delaminated or damaged components and safety any loose installation (refer to examples in) (Ref. TASK 21-20-00-010-001) and, (Ref. TASK 21-20-00-410-001)
R **ON A/C 106-149, 221-299, 301-399, 401-499,
Subtask 21-20-00-210-050-A
A. Inspection
(Ref. Fig. 601/TASK 21-20-00-991-004)
(1)
Do a general visual inspection of the riser ducts for:
-breakages, cracks and delamination of the composite material,
-security of installation of the duct system and,
-correct installation and general condition of the duct connections.
(2)
Replace any worn, delaminated or damaged components and safety any loose installation (refer to examples in) (Ref. TASK 21-20-00-010-001) and, (Ref. TASK 21-20-00-410-001)
**ON A/C ALL
5. Close-up
________
**ON A/C 001-049, 051-099, 101-149, 201-299,
Subtask 21-20-00-410-051
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install,
(a)
the cove light panels between frames C21 to C65 (Ref. TASK 25-23-48-400-001),
(b)
the upper sidewall panels between frames C21 to C37, C39 to C40 and C41 to C66 (Ref. TASK 25-23-43-400-001) and,
(c)
the lower sidewall panels between frames C21 to C37, C39 to C40 and C41 to C66 (Ref. TASK 25-23-44-400-001).
R **ON A/C 151-199, 401-499,
Subtask 21-20-00-410-051-A
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install,
(a)
the cove light panels between frames C21 to C65 (Ref. TASK 25-23-48-400-001),
(b)
the upper sidewall panels between frames C21 to C40 and C42 to C65 (Ref. TASK 25-23-43-400-001) and,
(c)
the lower sidewall panels between frames C21 to C40 and C42 to C64 (Ref. TASK 25-23-44-400-001).
**ON A/C 301-399,
Subtask 21-20-00-410-051-B
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