D. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001  Pre-conditioning through the HP Ground Connection
 12-33-21-618-001  Pre-conditioning with the APU
 20-26-00-910-002  Installation of Expansion Joints
 20-28-00-912-004  Electrical Bonding of Components With Conductive
 Bolts and Screws and Bonding Straps in the Fuselage
 and in the Wings (this does not include the tanks)-
21-52-22-000-001  Removal of the Fan Plenum Chamber 10HM5 (11HM5).
 21-52-22-400-001  Installation of the Fan Plenum Chamber 10HM5 (11HM5)
 21-52-23-000-001  Removal of the Pipe Assembly between the Main Heat
 Exchanger and the Air Cycle Machine
 21-52-23-400-001  Installation of the Pipe Assembly between the Main
 Heat Exchanger and the Air Cycle Machine
 21-61-52-000-003  Removal of the Ram-Air Outlet
 21-61-52-400-003  Installation of the Ram-Air Outlet
 21-63-00-710-004  Operational Test of the Cockpit and Cabin Temperature
 Control with CFDS/MCDU
 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 

R  **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
R  21-52-24-991-001 Fig. 401 **ON A/C 151-199, 401-499, 
R R 21-52-24-991-001-A **ON A/C ALL Fig. 401A 
21-52-24-991-003  Fig. 402

 3. Job Set-up
__________ Subtask 21-52-24-860-051
 A. Aircraft Maintenance Configuration
 (1) Make sure that:
 (a)
 The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).

 (b)
 On the panel 30VU:

 (c)
 On the HP ground connector the warning notice to tell persons not to supply ground air is in position.

 (d)
 The access panel is removed (Ref. TASK 53-35-13-000-002), FOR 10HM4 191KB, FOR 11HM4 192KB.

 (e)
 The pipe assembly is removed (Ref. TASK 21-52-23-000-001).

 (f)
 The ram air outlet is removed (Ref. TASK 21-61-52-000-003).

 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.

 1EFF : ALL 1 21-52-24Page 421 1 1 Aug 01/05R 1 1 1CES 1

 Subtask 21-52-24-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 10HM4 
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 
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 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
 **ON A/C ALL
 FOR 11HM4

 -------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
 -------------------------------------------------------------------------------

R **ON A/C 401-499,
 49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC 52HH D08