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 (7) Do an operational test of the ventilation system of the avionics equipment (Ref. TASK 21-26-00-710-001).
 5. Close-up________
 Subtask 21-26-00-410-053
 A. Install the access panel 128EG.
 Subtask 21-26-00-410-054
 B. 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). 
R  Subtask 21-26-00-942-074 
R R  C. Safety Precautions (Ref. TASK 24-41-00-862-002). 
R R  (1) Put a warning notice in the cockpit to tell the crew that this valve is deactivated. 
R  (2) Make an entry in the log book. 
R  Subtask 21-26-00-862-057 
R  D. Aircraft Maintenance Configuration 
R R  (1) Do the EIS stop procedure (Ref. TASK 31-60-00-860-002). 
R R  (2) De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).

 

 TASK 21-26-00-440-001
 Reactivation of the Skin Exchanger Inlet Bypass valve (16HQ)
 1. Reason for the Job
__________________
 Refer to the MMEL TASK: 21-26-03
 Avionics Equipment Ventilation
 Skin Exchanger Inlet Bypass 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 1.60 m (5 ft. 3 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 TSM 21 PB 101 (for corrective action)
R 21-26-00-991-012 Fig. 401
 3. Job Set-up
__________
 Subtask 21-26-00-861-058
 A. Energize the ground service network (Ref. TASK 24-42-00-861-001).

 Subtask 21-26-00-865-062
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/AVNCS VENT/CTL 6HQ D06 
R  Subtask 21-26-00-010-055-A 
R  C. Get Access 
R  (1) Put the access platform in position at the access door 824. 
R  (2) Open the access door 824. 
R  (3) Remove the access panel 128EG.
 4. Procedure_________
 Subtask 21-26-00-440-051
R  A. Reactivation of the Skin Exchanger Inlet Bypass Valve (Ref. Fig. 401/TASK 21-26-00-991-012)
 (1) Remove the tape and get the electric 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 16HQ-A to the valve 16HQ.
 (5) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 6HQ.
 Subtask 21-26-00-810-050
 B. Do the trouble-shooting of the valve 16HQ (Ref. TSM 21 PB 101). Do the applicable procedures to make the corrections.
 Subtask 21-26-00-410-055 
R  C. Install two screws to hold the access panel 128EG temporarily.

 

 Subtask 21-26-00-710-054
 D. Do an operational test of the ventilation system of the avionics
 equipment (Ref. TASK 21-26-00-710-001).

 5. Close-up
________ Subtask 21-26-00-410-056
 A. Install the access panel 128EG. Subtask 21-26-00-410-057
 B. 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).

 (4) Remove the warning notice(s). Subtask 21-26-00-862-058
 C. De-energize the ground service network (Ref. TASK 24-42-00-862-001).
 1EFF : ALL 1 21-26-00Page 407 1 1 Feb 01/04R 1 1 1CES 1

　
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