(2)
Disconnect the Bleed-Control Valve (BCV) electrical-connector (P33).
(3)
Use the dummy connector (EN2997SE01212CN). to simulate an electrical signal 'BCV-CLOSED' to ECB 59KD.
(a)
Install the two jumper leads (gauge 20) between contacts 4 and 5 and contacts 3 and 6
(b)
Retain the jumper leads in position with a backshell.
(4)
Connect the dummy connector to plug (P33).
(5)
Secure the plug (P33) with cable ties to aircraft structure.
(6)
Put a blanking cap on the electrical connector of the BCV.
(7)
Make sure that you put a warning notice in the cockpit to tell persons that the Bleed Control Valve is deactivated.
(8)
Make an entry in the aircraft technical log.
5. Close-up
________ Subtask 49-51-00-410-052
A. Close Access
(1)
Set the LIGHT control switch 11LJ to the off position.
(2)
Make sure that the work area is clean and clear of tool(s) and other items.
(3)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001).
(4)
Remove the access platform(s).
Bleed Control Valve-Visual Position Indicator
Figure 401/TASK 49-51-00-991-002
CES
(5)
Remove the warning notice(s). Subtask 49-51-00-865-054
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD, 1HV.
Subtask 49-51-00-860-051
C. Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
TASK 49-51-00-440-002
Reactivation of the Bleed Control Valve (8051KM) (APS 3200)
WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______ WHEN YOU DO THE MAINTENANCE TASK(S).
1. Reason for the Job
__________________
Refer to the MMEL TASK: 36-12-02
APU Bleed Air Supply and Cross Bleed
System - APU BLEED Valve
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific access platform 2.5 m (8 ft. 2 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 29-00-00-864-001 Put the Related Hydraulic System in the Depressurized
Configuration before Maintenance Action 49-00-00-710-008 Operational Test of the APU (APS 3200) 52-41-00-010-001 Open the APU Doors for Access 52-41-00-410-001 Close the APU Doors after Access TSM 490000810903 (for corrective action) TSM 490000810904 (for corrective action) TSM 490000810905 (for corrective action)
3. Job Set-up
__________ Subtask 49-51-00-860-052
A. Aircraft Maintenance Configuration
(1)
Energize the aircraft electrical circuits
(Ref. TASK 24-41-00-861-002).
(2)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3)
Put a warning notice in the cockpit to tell persons not to start the APU.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
Subtask 49-51-00-865-055
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HV.
Subtask 49-51-00-010-052
C. Get Access
(1)
Put the access platform in position below the APU access doors 315AL and 316AR.
(2)
Open the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-010-001).
(3)
Set the LIGHT control switch 11LJ to the on position.
4. Procedure
_________ Subtask 49-51-00-710-050
A. Reactivate the BVC.
(1)
Remove and discard the cable ties which attach the electrical connector (P33) to the aircraft structure.
(2)
Remove the blanking cap from the electrical connector of the BCV.
