-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R 122VU AIR COND/PACK TEMP CTL SYS2/1/115VAC 2HH Y18
R **ON A/C 106-149, 303-399,
R 122VU 4HH Y19
R **ON A/C 401-499,
R R 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC 49HH 51HH 50HH X22 X21Y18
**ON A/C ALL
FOR 11HM5
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
122VU AIR COND/PACK TEMP/CTL SYS1/2/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 21HH 23HH 24HH 22HH W22W21Y21Y20
R **ON A/C 401-499,
R R 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 53HH 55HH 56HH 54HH W22W21 Y21Y20
**ON A/C ALL
Subtask 21-52-22-010-050
C. Get Access
(1) Remove the access panel (Ref. TASK 53-35-13-000-002). FOR 10HM5 191KB, FOR 11HM5 192KB.
Subtask 21-52-22-941-050
D. 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 ground connector put a warning notice in position to tell persons not to supply the ground air.
4. Procedure
_________
**ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
(Ref. Fig. 401/TASK 21-52-22-991-001) R **ON A/C 151-199, 401-499,
(Ref. Fig. 401A/TASK 21-52-22-991-001-A)
Fan Plenum Chamber 10HM5 (11HM5)
Figure 401/TASK 21-52-22-991-001
R 1EFF : 001-049, 051-099, 101-149, 201-299, 1 21-52-22Page 405 1301-399, 1May 01/05 1 1 1CES 1
Fan Plenum Chamber 10HM5 (11HM5)
Figure 401A/TASK 21-52-22-991-001-A
R 1EFF : 151-199, 401-499, 1 21-52-22Page 406 1 1 Aug 01/05 1 1 1CES 1
**ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
Subtask 21-52-22-020-051
A. Removal of the Fan Plenum Chamber
(1)
Remove the ram air outlet/s (Ref. TASK 21-61-52-000-003).
(2)
Remove the pipe assembly/ies (Ref. TASK 21-52-23-000-001).
(3)
Remove the heat exchanger unit/s 10HM4 (11HM4) (Ref. TASK 21-52-24-000-001).
NOTE : It is not necessary to remove the inlet plenum at this time.
____
(4)
Remove the screws (1), the washers (2) and the fan plenum chamber (3).
(5)
Remove (where fitted) the gasket (4).
(6)
Put a protective cover on the cooling elements of the primary heat exchanger (5).
R **ON A/C 151-199, 401-499,
Subtask 21-52-22-020-051-A
A. Removal of the Fan Plenum Chamber
(1)
Remove the ram air outlet/s (Ref. TASK 21-61-52-000-003).
(2)
Remove the pipe assembly/ies (Ref. TASK 21-52-23-000-001).
(3)
Remove the heat exchanger unit/s 10HM4 (11HM4) (Ref. TASK 21-52-24-000-001).
NOTE : It is not necessary to remove the inlet plenum at this time.
____
(4) Bonding Strap Disconnection NOTE : This work step is only applicable for plenum chamber P/N
____
1816A0000-01
(a) Remove the nut (8), the washer (7), the screw (5) and disconnect the bonding strap (6).
(5)
Remove the screws (1), the washers (2) and the fan plenum chamber (3).
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