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3. Remove the screw (1) and the lock washer (2) from the aft pressure measurement point 1026.
-discard the lock washer (2).
 -connect the MANOMETER (EMA84) to the aft pressure measurement point 1026 with a piece of silicone tubing, I/D 4.0 mm
 (0.157 in.), approximate length
 2.0 m (6.5 ft.).
 4. Disconnect the manometer and the silicone tubing from the aft pressure measurement point 1026.
 -put the new lock washer (2) in position on the screw (1) and install the screw (1) in the aft pressure measurement point 1026.
 -TORQUE the screw (1) to 70 lbf.in (0.79 m.daN) maximum.
 **ON A/C 301-399,
 Subtask 21-23-00-720-050-BOn the manometer:
-the pressure reads between 10 mbar
(0.14 psi) and 15 mbar (0.21 psi).
 A. Functional Test of the Air Extraction Duct
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. Remove the plug (4) and the packing (3) from the forward pressure measurement point 1025.
-discard the packing (3).
 -connect the MANOMETER (EMA84) to the forward pressure measurement point 1025 with a piece of silicon tubing, I/D
 4.0 mm (0.157 in.), approximate length 2.0 m (6.5 ft.).
On the manometer:
-the pressure reads between 5 mbar
(0.07 psi) and 10 mbar (0.14 psi).
R 1EFF : 151-199, 301-399, 401-499, 1 21-23-00Page 506 1 1 Aug 01/05 1 1 1CES 1

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
R  2. Disconnect the manometer and the 
R  silicone tubing from the forward 
R  pressure measurement point 1025. 
R  - put the new packing (3) in 
R  position on the plug (4) and 
R  install the plug (4) in the 
R  forward pressure measurement 
R  point 1025. 
R  - TORQUE the plug (4) to 70 
R  lbf.in (0.79 m.daN) maximum. 
R  3. Remove the screw (1) and the lock 
R  washer (2) from the aft pressure 
R  measurement point 1026. 
R  - discard the lock washer (2). 
R  - connect the MANOMETER (EMA84) 
R  to the aft pressure measurement 
R  point 1026 with a piece of 
R  silicone tubing, I/D 4.0 mm 
R  (0.157 in.), approximate length 
R  2.0 m (6.5 ft.). 
R  4. Disconnect the manometer and the 
R  silicone tubing from the aft 
R  pressure measurement point 1026. 
R  - put the new lock washer (2) in 
R  position on the screw (1) and 
R  install the screw (1) in the 
R  aft pressure measurement point 
R  1026. 
R  - TORQUE the screw (1) to 70 
R  lbf.in (0.79 m.daN) maximum. 

On the manometer:
-the pressure reads between 11 mbar
(0.15 psi) and 16 mbar (0.23 psi).
R 1EFF : 301-399, 1 21-23-00Page 507 1 1 May 01/04 1 1 1CES 1 **ON A/C ALL

 5. Close-up
________ Subtask 21-23-00-410-052
 A. Close Access
 (1)
 Make sure that the work area is clean and clear of tool(s) and other items.

 (2)
 Install the ceiling panels 222BC and 251HC (Ref. TASK 25-13-41-400-001).

 (3) Remove the warning notice(s). Subtask 21-23-00-862-050
 B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
 1EFF : ALL 1 21-23-00Page 508 1 1 May 01/04R 1 1 1CES 1

 TASK 21-23-00-720-002 Functional Test of an Air Extraction Point
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. 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
 3. Job Set-up
__________ Subtask 21-23-00-861-052
 A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). Subtask 21-23-00-865-051
 B. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------122VU AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/CTL 5HU U21 122VU AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY 6HU U19
　
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