Reactivation of the Bleed Control Valve (APS 3200)

TASK 49-51-00-440-002-A
Reactivation of the Bleed Control Valve (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
MMEL 36-12-02A
APU BLEED VALVE
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
315AL, 316AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 49-00-00-710-008-A	Operational Test of the APU
TASK 52-41-00-010-001-A	Open the APU Doors for Access
TASK 52-41-00-410-001-A	Close the APU Doors after Access
TSM 49-00-00-810-903	(for corrective action)
TSM 49-00-00-810-904	(for corrective action)
TSM 49-00-00-810-905	(for corrective action)

3. Job Set-up
Subtask 49-51-00-860-052-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM 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 the hydraulic systems are depressurized
(Ref. AMM TASK 29-00-00-864-001).

Subtask 49-51-00-865-055-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20

Subtask 49-51-00-010-052-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the APU access doors 315AL and 316AR.
(2) Open the APU access doors 315AL 316AR (Ref. AMM 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-B ** ON A/C NOT FOR ALL

A. Reactivate the BVC.
(1) Remove and discard the cable ties which attach the electrical connector (P33) to the aircraft structure.
(2) Remove the CAP - BLANKING from the electrical connector of the BCV.
(3) Remove the CAP - BLANKING from the (P33) harness electrical connector.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Connect the electrical connector (P33) to BCV.
(6) Do the operational test of the APU (Ref. AMM TASK 49-00-00-710-008).
(7) If the test gives the Maintenance Message BLD FLOW XDCR (8039KM), do the Trouble Shooting procedure TSM 49-00-00-810-903.
(8) If the test gives the Maintenance Message BLEED CTL VLV (8051KM), do the Trouble Shooting procedure TSM 49-00-00-810-904.
(9) If the test gives the Maintenance Message IGV ACTR (8014KM), do the Trouble Shooting procedure TSM 49-00-00-810-905.

5. Close-up
Subtask 49-51-00-865-060-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	APU/APU/CTL	2KD	L42
121VU	APU/ECB/SPLY	1KD	L41
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20

Subtask 49-51-00-410-054-A ** ON A/C NOT FOR ALL

B. 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 tools and other items.
(3) Close the APU access doors 315AL 316AR (Ref. AMM TASK 52-41-00-410-001).
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).
(6) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)

[Rev.10 from 2021] 2026.04.01 01:30:49 UTC