R  (3) Remove the access panel (Ref. TASK 25-55-12-000-001): (a) FOR 33HN - 162DW,
R  (4) Remove the access panel (Ref. TASK 25-55-11-000-003): (a) FOR 34HN - 151VW.
 **ON A/C ALL
 4. Procedure_________
 Subtask 21-28-00-040-055-A
 A. Deactivation of the Cargo-Compartment Ventilation Isolation-Valves **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
R  (Ref. Fig. 402/TASK 21-28-00-991-004-A) **ON A/C 151-199, 401-499,
 (Ref. Fig. 402A/TASK 21-28-00-991-004) **ON A/C ALL
 (1) On the isolation valves (2) move the manual override levers (1) to the closed position. (2) Disconnect the electrical connectors (3), (33HN-A and 34HN-A), and temporarily attach them to the aircraft structure. (3) Put blanking caps on the disconnected electrical connectors. 

R 1EFF : ALL 1 21-28-00Page 418 1 1 Aug 01/05 1 1 1CES 1

 Cargo-Compartment Ventilation Isolation-Valves - Component Location Figure 402/TASK 21-28-00-991-004-A
R 1EFF : 001-049, 051-099, 101-149, 201-299, 1 21-28-00Page 419 1301-399, 1Aug 01/05 1 1 1CES 1

 Cargo-Compartment Ventilation Isolation-Valves - Component Location
 Figure 402A/TASK 21-28-00-991-004

R 1EFF : 151-199, 401-499, 1 21-28-00Page 420 1 1 Aug 01/05 1 1 1CES 1

 5. Close-up
________
 **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,

 Subtask 21-28-00-410-074-B
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the access panel (Ref. TASK 25-55-12-400-001):

 (a) FOR 33HN
 -162DW.

 (3)
 Install the access panel (Ref. TASK 25-55-11-400-003):

 (a) FOR 34HN
 -151EW.

 (4)
 Remove the access platform(s).

 (5)
 Close the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-002).

 (6)
 Put a warning notice in the cockpit to tell the flight crew that the AFT cargo-compartment ventilation isolation-valve (33HN,34HN) is deactivated.

 (7) Make an entry in the aircraft log book to record the deactivation. R **ON A/C 151-199, 401-499,
 Subtask 21-28-00-410-074
 A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.
 (2)
 Install the access panel (Ref. TASK 25-55-12-400-001): R (a) FOR 33HN

 -162DW.

 (3)
 Install the access panel (Ref. TASK 25-55-11-400-003): R (a) FOR 34HN

 -151VW.
 (4)
 Remove the access platform(s).

 (5)
 Close the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-002).

 (6)
 Put a warning notice in the cockpit to tell the flight crew that the AFT cargo-compartment ventilation isolation-valve (33HN,34HN) is deactivated.

 (7) Make an entry in the aircraft log book to record the deactivation. **ON A/C ALL
 Subtask 21-28-00-862-071-A
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 TASK 21-28-00-440-004
 Reactivation of the AFT Cargo-Compartment Ventilation Isolation-Valves 33HN, 34HN
 1. Reason for the Job
__________________
 Refer to the MMEL TASK: 21-28-06 Cargo Compartment Ventilation AFT Cargo AFT ISOL VALVE FAULT light This procedure is only applicable for aircraft WITHOUT ventilation isolation valve position indications on the ECAM COND page.
 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. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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 25-55-11-000-003 Removal of the Sidewall Panels in the AFT Cargo Compartment - FR47/FR59 25-55-11-400-003 Installation of the Sidewall Panels in the AFT Cargo
 Compartment - FR47/FR59 25-55-12-000-001 Removal of the AFT Cargo Compartment Partition FR65 25-55-12-400-001 Installation of the AFT Cargo Compartment Partition
 FR65 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump TSM ATA 21 (for corrective action)
　
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