(d)
 Fully open the valve 21HQ with the manual mechanism.

 1EFF : ALL 1 21-26-00Page 419 1 1 May 01/04R 1 1 1CES 1

R  Air Conditioned Inlet Valve Figure 404/TASK 21-26-00-991-009
 1EFF : 1 1 1CES  ALL  1 111 21-26-00 Page 420 Aug 01/05

 (2)
 On the bottom part of the upper ECAM display unit:

 -the VENT AVNCS SYS FAULT warning comes into view.
 Disregard this warning.
 On the ECAM control panel:

 -push the CLR key.

 (3)
 Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 5HQ.

 (4)
 Do an operational test of the ventilation system of the avionics equipment (Ref. TASK 21-26-00-710-001).

 5. Close-up
________ Subtask 21-26-00-410-058
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Close the access door 824 (Ref. TASK 52-41-00-410-002).

 (3)
 Remove the access platform(s). Subtask 21-26-00-942-077

 B. Safety Precautions
 (1) Put a warning notice in the cockpit to tell the crew that this valve is deactivated.

 (2)
 Make an entry in the log book. Subtask 21-26-00-862-061

 C. 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 21-26-00Page 421 1 1 May 01/05R 1 1 1CES 1

 TASK 21-26-00-440-003
R Reactivation of the Conditioned-Air Inlet Valve (21HQ)
 1. Reason for the Job
__________________
 Refer to the MMEL TASK: 21-26-08
 Avionics Equipment Ventilation
 Air Conditioning Inlet Valve

 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
 No specific access platform 1.50 m (4 ft. 11 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
21-26-00-710-001 Operational Check of System via MCDU 24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from
 the External Power 52-41-00-410-002 Close the Avionics Compartment Doors after Access 21-26-00-991-009 Fig. 404
 3. Job Set-up
__________
 CAUTION : USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE
_______ THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
 Subtask 21-26-00-861-062
 A. Energize the ground service network (Ref. TASK 24-42-00-861-001).

 Subtask 21-26-00-865-066
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 5HQ D05
 Subtask 21-26-00-010-058
 C. Get Access
 (1)
 Put the access platform in position at the access door 824.

 (2)
 Open the access door 824.

 4. Procedure
_________ R (Ref. Fig. 404/TASK 21-26-00-991-009) Subtask 21-26-00-440-053 R A. Reactivation the Air Conditioned-Air Inlet Valve
 (1)
 Get the electrical cable and its connector.

 (2)
 Remove the blanking caps from the electrical connectors.

 (3)
 Make sure that the electrical connectors are clean and in the correct condition.

 (4) Connect the electrical connector 21HQ-A to the valve 21HQ.
 Subtask 21-26-00-865-067

 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 5HQ
 Subtask 21-26-00-710-056
 C. Do an operational test of the ventilation system of the avionics equipment (Ref. TASK 21-26-00-710-001).

 5. Close-up
________ Subtask 21-26-00-410-059
　
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