(2)
 Put a warning notice in position to tell persons not to close the avionics-bay access door 811.

 4. Procedure
_________ R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 401-499,
 (Ref. Fig. 201/TASK 12-33-21-991-001)
 **ON A/C 301-399,

 (Ref. Fig. 201A/TASK 12-33-21-991-001-A)
 **ON A/C ALL

 Subtask 12-33-21-618-055
 A. Pre-conditioning with the APU
 (1)
 Do the start procedure of the APU:

 -
(Ref. TASK 49-00-00-860-003) or,

 -
(Ref. TASK 49-00-00-860-005) or,

 -
(Ref. TASK 49-00-00-860-008).

 (2)
 On the panel 30VU:

 -
push the APU BLEED pushbutton switch to the on position (the ON legend comes on),

 -
push the PACK 1 and the PACK 2 pushbutton switches to the on position (the OFF legends go off),

 -
push the HOT AIR pushbutton switch to the on position (the OFF legend goes off),

 -make sure that the X BLEED selector is at the AUTO position.

 (3)
 On the panel 22VU:

 -push the CAB FANS pushbutton switch to the on position (the OFF legend goes off).

 (4)
 On AIR BLEED page of the ECAM lower DU, make sure that the pack discharge temperature-indication is normal (green).

 Subtask 12-33-21-618-058
 B. When the pre-conditioning is no longer necessary:
 (1)
 On the panel 30VU:

 -
push the PACK 1 and the PACK 2 pushbutton switches to the off position (the OFF legends come on),

 -
push the HOT AIR pushbutton switch to the off position (the OFF legend comes on),

 -
push the APU BLEED pushbutton switch to the off position (the ON legend goes off).

 (2)
 On panel 22VU:

 -push the CAB FANS pushbutton switch to the off position (the OFF legend comes on).

 (3)
 Do the procedure to stop the APU:

 -
(Ref. TASK 49-00-00-860-004) or,

 -
(Ref. TASK 49-00-00-860-006) or,

 -
(Ref. TASK 49-00-00-860-009).

 5. Close-up
________
 Subtask 12-33-21-860-053
 A. Aircraft Maintenance Configuration
 (1)
 Do the EIS stop procedure
 (Ref. TASK 31-60-00-860-002).

 (2)
 De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 1EFF : ALL 1 12-33-21Page 216 1 1 Aug 01/05R 1 1 1CES 1

 Subtask 12-33-21-410-055
 B. Close Access
 (1)
 Close the avionics-bay access door 811.

 (2)
 Remove the warning notice(s).

 (3)
 Remove the ground support and maintenance equipment, the special and standard tools and all other items.

 1EFF : ALL 1 12-33-21Page 217 1 1 Feb 01/05R 1 1 1CES 1

 LP and HP Ground Connectors
 Figure 202/TASK 12-33-21-991-003
 1EFF :  ALL  1  12-33-21 Page 218 
1  1  Feb 01/05
 1  1
 1CES  1

 GROUND AIR PRE-CONDITIONING - SERVICING
_______________________________________
 TASK 12-33-21-600-001
 Pre-conditioning through the LP Ground Connection
 WARNING : MAKE SURE THAT THE FWD AVIONICS ACCESS DOOR 811 IS OPEN. WITH A_______ WARNING PLACARD ATTACHED TO IT. THE WARNING NOTICE MUST TELL PERSONS NOT TO CLOSE THE DOOR. THIS PREVENTS ACCIDENTAL PRESSURIZATION OF THE AIRCRAFT.
 CAUTION : DO NOT USE CONDITIONED AIR FROM THE PACKS AT THE SAME TIME AS AIR_______ FROM THE LOW-PRESSURE GROUND UNITS. THIS CAN CAUSE DAMAGE TO THE CHECK VALVES. 
R R R R  CAUTION : MAKE SURE THAT THE GROUND AIR-SUPPLY UNIT IS NOT TOO NEAR THE_______ AIRCRAFT AND THAT THE ENGINE EXHAUST PIPE OF THE GROUND AIR- SUPPLY UNIT POINTS AWAY FROM THE AIRCRAFT. HEAT FROM THIS UNIT AND FROM THE EXHAUST CAN CAUSE DAMAGE TO THE AIRCRAFT STRUCTURE.
 1. Reason for the Job__________________
 Self Explanatory
 2. Job Set-up Information______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific  ground air-supply unit
 3. Job Set-up__________
 Subtask 12-33-21-010-056
 A. Get Access
 (1) Open the avionics-bay access door 811.
 (2) Put a warning notice in position to tell persons not to close the avionics-bay access door 811.
　
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