Subtask 21-63-19-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION ------------------------------------------------------------------------------- -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
R **ON A/C 401-499,
49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC 52HH D08
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 21HH W22
122VU AIR COND/PACK TEMP/CTL SYS1/2/28VDC 23HH W21
122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 1HH X22
122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 3HH X21
122VU AIR COND/PACK TEMP CTL SYS2/2/28VDC 24HH Y21
122VU AIR COND/PACK TEMP CTL SYS2/2/115VAC 22HH Y20
R
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
R 122VU AIR COND/PACK TEMP CTL SYS2/1/28VDC 4HH Y19
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 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 53HH W22
R 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 55HH W21
R 122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 49HH X22
R 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 51HH X21
R 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 56HH Y21
R 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 54HH Y20 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC 50HH Y18 R
**ON A/C ALL
Subtask 21-63-19-010-050
C. Get Access
(1)
Open the FWD cargo door 825 (Ref. TASK 52-30-00-860-001).
(2)
Put the access platform in position at the FWD cargo compartment door
825.
(3)
Remove the access panel (Ref. TASK 25-54-12-000-001), 131PW.
4. Procedure
_________
(Ref. Fig. 401/TASK 21-63-19-991-001)
Subtask 21-63-19-020-050
A. Removal of the Pressure Switch
(1)
Disconnect the electrical connector (1).
(2)
Put blanking caps on the disconnected electrical connectors.
(3)
Remove and discard the lockwire.
(4)
Remove the hot air-pressure switch (2) and the O-ring (3).
(5)
Put blanking plugs on the disconnected line ends.
5. Close-up
________
Hot Air-Pressure Switch. Figure 401/TASK 21-63-19-991-001
1EFF : 1 1R 1CES ALL 1 11 1 21-63-19 Page 404 Feb 01/05
TASK 21-63-19-400-001 Installation of the Hot Air-Pressure Switch 26HK WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______ FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 2 m (6 ft. 7 in.)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 19-009 USA AMS 5687 LOCKWIRE STAINLESS STEEL ANNEALED 0.5MM DIA (Ref. 20-31-00)
C. Expendable Parts
-------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
3 O-ring 21-63-03 07 -400 3 O-ring 21-63-03 07A-400
1EFF : ALL 1 21-63-19Page 405 1 1 Feb 01/05R 1 1 1CES 1
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