-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 Pre-conditioning through the HP Ground Connection 12-33-21-618-001 Pre-conditioning with the APU 21-52-00-200-002 Detailed Visual Inspection of Pipe-Assemblies between
the Heat Exchanger Unit, the Bypass Valve, the Anti-Ice Valve (if installed) and the Air Cycle Machine
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure 53-35-13-400-002 Installation of the Quick-Release Access Panels on the Belly Fairing Structure
**ON A/C 001-049, 051-099, 101-105, 151-158, 201-210,
21-52-23-991-003 Fig. 403
R **ON A/C 106-149, 159-199, 211-299, 301-399, 401-499,
21-52-23-991-003-A Fig. 403A
R **ON A/C ALL
3. Job Set-up
__________
Subtask 21-52-23-860-054
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
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(2) The access panel is removed (Ref. TASK 53-35-13-000-002), FOR 10HM13 191KB, FOR 11HM13 192KB.
(a) On the panel 30VU:
1_ The APU BLEED pushbutton switch is in the off position (the ON legend is off).
2_ The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).
3_ The warning notice to tell persons not to operate these pushbutton switches is in position.
(b) On the HP ground connector the warning notice to tell persons not to supply ground air is in position.
Subtask 21-52-23-865-059
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 10HM13
R **ON A/C 401-499,
R 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,
R 122VU AIR COND/PACK TEMP/CTL SYS1/1/115VAC 122VU AIR COND/PACK TEMP/CTL SYS1/1/28VDC 1HH 3HH X22X21
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
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-------------------------------------------------------------------------------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 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 X21 Y18
R **ON A/C ALL
FOR 11HM13
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 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 W22 W21 Y21 Y20
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4. Procedure
_________
**ON A/C 001-049, 051-099, 101-105, 151-158, 201-210,
(Ref. Fig. 403/TASK 21-52-23-991-003)
R **ON A/C 106-149, 159-199, 211-299, 301-399, 401-499,
(Ref. Fig. 403A/TASK 21-52-23-991-003-A)
R **ON A/C ALL
Subtask 21-52-23-420-051
A. Installation of the Pipe Assembly
(1)
Do the detailed visual inspection of the pipe assembly (Ref. TASK 21-52-00-200-002).
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